Revenue (Contract Assets and Advance Billings) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Revenue from Contract with Customer [Abstract]
Advance billings, current	$ 67,398	$ 69,295
Advance billings, noncurrent	384	$ 507
Increase/ (decrease)
Advance billings, current	(1,897)
Advance billings, noncurrent	$ (123)