Contract Assets and Liabilities (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract]
Contract with customer, asset, period decrease	$ 300,000
Contract with customer, asset, impairment loss	0	$ 0
Decrease in contract with customer, liability	1,700,000
Contract with customer, liability, revenue recognized	$ 4,800,000	$ 4,300,000