Stock Options and Restricted Stock Awards - Stock Option Plans (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Stock Option Plans
Outstanding at Beginning of Year	1,961,650
Granted	25,000
Outstanding at End of Year	1,986,650
Options Exercisable at End of Year	1,004,050
Weighted Average Exercise Price
Outstanding at Beginning of Year	$ 7.08
Granted	12.67
Outstanding at End of Year	7.15
Options Exercisable at End of Year	$ 5.01
Stock Options
Weighted Average Exercise Price
Compensation expense for stock options	$ 218	$ 175

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

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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