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Revenue Recognition (Contract Balances) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)
Trade accounts receivable
Balance, January 1, 2023	$ 409
Balance, September 30, 2023	0
Increase (decrease) in trade accounts receivable	(409)
Contract asset (current)
Increase (decrease) in contract asset (current)	(409)
Contract asset (long-term)
Balance, January 1, 2023	5,985
Balance, September 30, 2023	3,625
Increase (decrease) in contract asset (long-term)	(2,360)
Contract liability (current)
Balance, January 1, 2023	833
Balance, September 30, 2023	1,299
Increase (decrease) in contract liability (current)	466
Contract liability (long-term)
Balance, January 1, 2023	1,709
Balance, September 30, 2023	1,604
Increase (decrease) in contract liability (long-term)	(105)
Trade Accounts Receivable
Trade accounts receivable
Balance, January 1, 2023	37,940
Balance, September 30, 2023	29,738
Increase (decrease) in trade accounts receivable	(8,202)
Contract asset (current)
Increase (decrease) in contract asset (current)	$ (8,202)

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