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Stock Based Compensation Plan (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Apr. 28, 2015
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of options exercised	$ 0	$ 693	$ 370	$ 4,400
Share-based compensation expense	0	0	0	$ 0
Unrecognized share-based compensation expense	0		$ 0
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock grants			180	500
Share-based compensation expense	130	133	$ 464	$ 402
Fair value of vested shares	8	$ 10	218	$ 381
Unrecognized share-based compensation expense	$ 631		$ 631
Recognition period			1 year 6 months
Restricted Stock Awards \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting term			2 years
Restricted Stock Awards \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting term			5 years
2015 Plan \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares reserved for issuance					976,211
Number of shares available for grant	301,242		301,242
Vesting term			5 years
Expiration term			10 years
2015 Plan \| Stock options \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Price of stock expressed in fair value percentage			100.00%
2015 Plan \| Stock options \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of award			10 years
2006 Plan \| Stock options \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	1,490,700		1,490,700