Segment Reporting - Reconciliation of Segment Earnings to Earnings Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating earnings (losses)	$ 5,771	$ 16,159	$ (5,747)
General and administrative	(17,718)	(13,701)	(10,284)
Interest expense	(1,287)	(746)	(444)
Earnings (Losses) before income taxes	5,405	15,656	(5,535)
Segment operating earnings
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating earnings (losses)	23,489	29,860	4,537
General and administrative
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating earnings (losses)	0	0	0
General and administrative	(17,718)	(13,701)	(10,284)
Segment Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest income	921	243	656
Interest expense	$ (1,287)	$ (746)	$ (444)