Intangible Assets - Finite-lived Intangible Assets Roll Forward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Finite-lived Intangible Assets
Finite-lived intangible assets, beginning of period	$ 35,240	$ 35,240
Additions	0
Total finite-lived intangible assets, end of period	35,240	35,240	$ 35,240
Accumulated Amortization
Accumulated amortization, beginning of period	(33,576)	(32,055)
Current year amortization	(1,239)	(1,521)	(2,070)
Total accumulated amortization	(34,815)	(33,576)	$ (32,055)
Net intangible assets
Net finite-lived intangible assets, end of period	425	1,664
Infinite-lived intangible assets	6,892	6,892
Total net intangible assets	$ 7,317	$ 8,556