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Stock Options and Stock-Based Compensation - Narrative (Details) - USD ($) $ in Thousands		12 Months Ended
	Apr. 28, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants during the period (in shares)		184,487
Compensation cost related to restricted stock grants		$ 1,978
Compensation expense recognized for restricted shares		652	$ 565
Unrecognized compensation costs		$ 694	$ 600
2010 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares not issued (in shares)	215,513
2010 Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants during the period (in shares)		76,597
2020 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of common stock reserved for issuance (in shares)				400,000

X

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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