| 2020-10-23           | 
                                                                                        Quarterly Filings           | 
                                                                                        10-Q           | 
                                                                                        Quarterly report which provides a continuing view of a company's financial position           | 
                                                                                                   | 
                                       | 
                                       | 
                                       | 
                                       | 
              
          
                                                                                        | 2020-10-19           | 
                                                                                        Current Reports           | 
                                                                                        8-K           | 
                                                                                        Report of unscheduled material events or corporate event           | 
                                                                                                   | 
                                       | 
                                       | 
                                       | 
                                       | 
              
          
                                                                                        | 2020-08-21           | 
                                                                                        3,4,5           | 
                                                                                        4           | 
                                                                                        Statement of changes in beneficial ownership of securities           | 
                                                                                        Sourisseau Didier           | 
                                       | 
                                       | 
                                       | 
                                       | 
              
          
                                                                                        | 2020-08-10           | 
                                                                                        3,4,5           | 
                                                                                        4           | 
                                                                                        Statement of changes in beneficial ownership of securities           | 
                                                                                        Bourque Robert H Jr           | 
                                       | 
                                       | 
                                       | 
                                       | 
              
          
                                                                                        | 2020-07-30           | 
                                                                                        3,4,5           | 
                                                                                        4           | 
                                                                                        Statement of changes in beneficial ownership of securities           | 
                                                                                        Funk Andrea J.           | 
                                       | 
                                       | 
                                       | 
                                       | 
              
          
                                                                                        | 2020-07-30           | 
                                                                                        3,4,5           | 
                                                                                        4           | 
                                                                                        Statement of changes in beneficial ownership of securities           | 
                                                                                        TURNER JIM L           | 
                                       | 
                                       | 
                                       | 
                                       | 
              
          
                                                                                        | 2020-07-30           | 
                                                                                        3,4,5           | 
                                                                                        4           | 
                                                                                        Statement of changes in beneficial ownership of securities           | 
                                                                                        OWENS B CRAIG           | 
                                       | 
                                       | 
                                       | 
                                       | 
              
          
                                                                                        | 2020-07-30           | 
                                                                                        3,4,5           | 
                                                                                        4           | 
                                                                                        Statement of changes in beneficial ownership of securities           | 
                                                                                        Lee Rose           | 
                                       | 
                                       | 
                                       | 
                                       | 
              
          
                                                                                        | 2020-07-30           | 
                                                                                        3,4,5           | 
                                                                                        4           | 
                                                                                        Statement of changes in beneficial ownership of securities           | 
                                                                                        CONWAY JOHN W           | 
                                       | 
                                       | 
                                       | 
                                       | 
              
          
                                                                                        | 2020-07-30           | 
                                                                                        3,4,5           | 
                                                                                        4           | 
                                                                                        Statement of changes in beneficial ownership of securities           | 
                                                                                        URKIEL WILLIAM S           | 
                                       | 
                                       | 
                                       | 
                                       | 
              
          
                                                                                        | 2020-07-30           | 
                                                                                        3,4,5           | 
                                                                                        4           | 
                                                                                        Statement of changes in beneficial ownership of securities           | 
                                                                                        Muller Josef M           | 
                                       | 
                                       | 
                                       | 
                                       | 
              
          
                                                                                        | 2020-07-30           | 
                                                                                        3,4,5           | 
                                                                                        4           | 
                                                                                        Statement of changes in beneficial ownership of securities           | 
                                                                                        HAGGE STEPHEN J           | 
                                       | 
                                       | 
                                       | 
                                       | 
              
          
                                                                                        | 2020-07-30           | 
                                                                                        3,4,5           | 
                                                                                        4           | 
                                                                                        Statement of changes in beneficial ownership of securities           | 
                                                                                        FEARON RICHARD H           | 
                                       | 
                                       | 
                                       | 
                                       | 
              
          
                                                                                        | 2020-07-30           | 
                                                                                        3,4,5           | 
                                                                                        4           | 
                                                                                        Statement of changes in beneficial ownership of securities           | 
                                                                                        Sweitzer Caesar F           | 
                                       | 
                                       | 
                                       | 
                                       | 
              
          
                                                                                        | 2020-07-30           | 
                                                                                        3,4,5           | 
                                                                                        4           | 
                                                                                        Statement of changes in beneficial ownership of securities           | 
                                                                                        MILLER JAMES H           | 
                                       | 
                                       | 
                                       | 
                                       | 
              
          
                                                                                        | 2020-07-27           | 
                                                                                        Quarterly Filings           | 
                                                                                        10-Q           | 
                                                                                        Quarterly report which provides a continuing view of a company's financial position           | 
                                                                                                   | 
                                       | 
                                       | 
                                       | 
                                       | 
              
          
                                                                                        | 2020-07-20           | 
                                                                                        Current Reports           | 
                                                                                        8-K           | 
                                                                                        Report of unscheduled material events or corporate event           | 
                                                                                                   | 
                                       | 
                                       | 
                                       | 
                                       | 
              
          
                                                                                        | 2020-06-18           | 
                                                                                        Annual Filings           | 
                                                                                        11-K           | 
                                                                                        An annual report of employee stock purchase, savings and similar plans           | 
                                                                                                   | 
                                       | 
                                       | 
                                       | 
                                       | 
              
          
                                                                                        | 2020-06-18           | 
                                                                                        Annual Filings           | 
                                                                                        11-K           | 
                                                                                        An annual report of employee stock purchase, savings and similar plans           | 
                                                                                                   | 
                                       | 
                                       | 
                                       | 
                                       | 
              
          
                                                                                        | 2020-05-29           | 
                                                                                        Other           | 
                                                                                        SD           | 
                                                                                        Specialized Disclosure Report           | 
                                                                                                   | 
                                       | 
                                       | 
                                       | 
                                       |