Revenue (Contract Assets and Liabilities) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Contract assets	$ 676,000		$ 676,000		$ 446,000
Contract with customer, liability	10,700,000		10,700,000		$ 12,400,000
Contract with customer, liability, revenue recognized	$ 4,700,000	$ 4,600,000	8,300,000	$ 8,300,000
Contract with customer, performance obligation satisfied in previous period			$ 0	$ 0