Revenue (Contract Assets and Advance Billings) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Revenue from Contract with Customer [Abstract]
Advance billings, current	$ 80,801	$ 82,124
Advance billings, noncurrent	502	$ 507
Increase/ (decrease)
Advance billings, current	(1,323)
Advance billings, noncurrent	$ (5)