Revenues Revenues - Contract Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Balance at beginning of year	$ 13,852	$ 13,022
Contract with Customer, Liability, Revenue Recognized	(13,819)	(11,018)
Increases due to cash received, excluding amounts recognized as revenue during the period	23,017	11,848
Balance at end of year	$ 23,050	$ 13,852