XML 71 R56.htm IDEA: XBRL DOCUMENT v3.20.2
Contract Assets and Liabilities - (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Revenue from Contract with Customer [Abstract]      
Contract assets $ 737,000   $ 851,000
Unbilled receivables 396,000   387,000
Contract assets 1,132,976   1,238,173
Advance billings deducted from contract assets 412,000   $ 574,000
Revenue recognized that was included in contract liabilities as of January 1 $ 731,000 $ 743,000