Summary of Significant Accounting Policies - Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Basic earnings per share:
Net earnings	$ 3,487	$ 11,888	$ 995
Basic weighted average number of shares outstanding (in shares)	4,053	4,283	4,240
Basic net earnings per share (in dollars per share)	$ 0.86	$ 2.78	$ 0.23
Diluted earnings per share:
Common shares (in shares)	4,053	4,283	4,240
Total diluted shares (in shares)	4,091	4,323	4,254
Diluted net earnings per share (in dollars per share)	$ 0.85	$ 2.75	$ 0.23
Shares repurchased	$ 69,928	$ 0	$ 0
Restricted stock unit awards
Diluted earnings per share:
Units award (in shares)	23	23	11
Performance share unit awards
Diluted earnings per share:
Units award (in shares)	15	17	3