Stock Options - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands							3 Months Ended		9 Months Ended
	Jan. 20, 2023	Jan. 18, 2022	Apr. 09, 2021	Mar. 11, 2020	Mar. 15, 2019	Aug. 27, 2015	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jan. 01, 2023	Dec. 31, 2022
Employee Stock Purchase Plan
Options, outstanding (in shares)						3,000	1,000,000	917,000	1,000,000	917,000		914,000
Granted (in shares)						58,125			89,000
Granted (in dollars per share)						$ 28.02			$ 27.77
Exercisable period (in years)						5 years
Tranche One
Employee Stock Purchase Plan
Options, outstanding (in shares)	59,500	156,000	156,500	119,300	101,100
Granted (in shares)	59,500	156,000	156,500	119,300	120,900				59,500
Granted (in dollars per share)	$ 27.77	$ 24.10	$ 24.23	$ 25.34	$ 28.01
Exercisable period (in years)	3 years	3 years	3 years	3 years	3 years
Tranche Two
Employee Stock Purchase Plan
Options, outstanding (in shares)	29,500	78,000	78,000	119,200	99,900
Granted (in shares)	29,500	78,000	78,000	119,200	119,100				29,500
Granted (in dollars per share)	$ 27.77	$ 24.10	$ 24.23	$ 25.34	$ 28.01
Exercisable period (in years)	5 years	5 years	5 years	5 years	5 years
Employee Stock Option
Employee Stock Purchase Plan
Options, outstanding (in shares)											914,000
Exercisable period (in years)									10 years
Compensation expense							$ 229	$ 236	$ 715	$ 1,004
Number of exercisable options (in shares)							223,400		223,400
Weighted average remaining contractual term (in years)									5 years 11 months 8 days
Unrecognized compensation cost for non-vested shares							$ 1,437		$ 1,437
Period for recognition (in years)									1 year 29 days
Employee Stock Option | Tranche One
Employee Stock Purchase Plan
Exercisable period (in years)									3 years
Employee Stock Option | Tranche Two
Employee Stock Purchase Plan
Exercisable period (in years)									5 years