Revenue Recognition (Contract Balances) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Trade accounts receivable
Balance at January 1, 2023	$ 409
Balance at December 31, 2023	0
Increase (decrease) in trade accounts receivable	(409)
Contract asset (current)
Increase (decrease) in contract asset (current)	(409)
Contract asset (long-term)
Balance at January 1, 2023	5,985
Balance at December 31, 2023	3,712
Increase (decrease) in contract asset (long-term)	(2,273)
Contract liability (current)
Balance at January 1, 2023	833
Balance at December 31, 2023	878
Increase (decrease) in contract liability (current)	45
Contract liability (long-term)
Balance at January 1, 2023	1,709
Balance at December 31, 2023	1,470
Increase (decrease) in contract liability (long-term)	(239)
Trade Accounts Receivable
Trade accounts receivable
Balance at January 1, 2023	37,940
Balance at December 31, 2023	37,429
Increase (decrease) in trade accounts receivable	(511)
Contract asset (current)
Increase (decrease) in contract asset (current)	$ (511)