Contract Assets (Tables)

12 Months Ended

Dec. 31, 2019

Contract With Customer Asset And Liability [Abstract]

Changes In Contract Assets

Significant changes in the contract asset balance during the period are as follows:

		December 31,
(in thousands)		2019		2018
Beginning balance as of December 31	$	140,082	$	146,496
Revenue recognized		2,076,680		2,387,333
Amounts collected or invoiced		(2,055,701)		(2,393,747)
Ending balance as of December 31	$	161,061	$	140,082