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Stock-Based Compensation - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended		162 Months Ended	210 Months Ended
	May 31, 2021	May 31, 2014	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	May 20, 2020	May 19, 2020	Dec. 31, 2008	Dec. 31, 2004
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense			$ 783	$ 1,106	$ 1,762	$ 2,114
Stock-based compensation expense to be recognized through results of operations			$ 5,677		$ 5,677		$ 5,677	$ 5,677
Employee Stock Award Plan-2008
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance (in shares)			1,281,082		1,281,082		1,281,082	1,281,082	1,317,819			1,900,000
Additional shares authorized (in shares)	650,000	1,500,000			0		2,150,000
Employee Stock Award Plan-2008 \| Options Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period					10 years
Employee Stock Award Plan-2008 \| Three years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights percentage					20.00%
Employee Stock Award Plan-2008 \| Three years \| Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
Employee Stock Award Plan-2008 \| Five years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights percentage					33.30%
Employee Stock Award Plan-2008 \| Five years \| Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					5 years
Director Plan - 2005
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance (in shares)			121,492		121,492		121,492	121,492	144,352	450,000	300,000		300,000
Additional shares authorized (in shares)					0			150,000