Revenue Recognition (Contract Balances) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($)
Trade accounts receivable
Balance, January 1, 2020	$ 18,894
Balance, December 31, 2020	25,667
Increase (decrease) in accounts receivable	6,773
Contract asset (long-term)
Balance, January 1, 2020	4,984
Balance, December 31, 2020	5,985
Increase (decrease) in long-term assets	1,001
Contract liability (current)
Balance, January 1, 2020	941
Balance, December 31, 2020	4,082
Increase (decrease) in contract liability (current)	3,141
Contract liability (long-term)
Balance, January 1, 2020	3,626
Balance, December 31, 2020	488
Increase (decrease) in contract liability (long-term)	$ (3,138)