Revenue (Advance Billings) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Revenue from Contract with Customer [Abstract]
Advance billings, current	$ 82,124	$ 97,904
Advance billings, noncurrent	507	$ 906
Increase (decrease)
Advance billings, current	(15,780)
Advance billings, noncurrent	$ (399)