Revenue (Contract Assets and Advance Billings) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Revenue from Contract with Customer [Abstract]
Advance billings, current	$ 78,471	$ 82,124
Advance billings, noncurrent	409	$ 507
Increase/ (decrease)
Advance billings, current	(3,653)
Advance billings, noncurrent	$ (98)