Contract Assets and Liabilities (Schedule of Contract Assets and Contract Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract]
Contract assets	$ 105,626	$ 79,070
Allowance for expected credit losses	(773)	0
Contract assets, net	104,853	79,070
Contract liabilities	$ 7,913	$ 5,656