Stock Based Compensation - Stock Appreciation Rights (Details) - Stock Appreciation Rights (SARs)	3 Months Ended
Mar. 31, 2021 $ / shares shares
Number of Shares
Beginning Balance (in shares) \| shares	180,925
Granted (in shares) \| shares	0
Exercised (in shares) \| shares	0
Forfeited (in shares) \| shares	0
Ending Balance (in shares) \| shares	180,925
Exercisable at the end of period (in shares) \| shares	73,888
Weighted Average Grant Date Fair Value
Beginning balance (in dollars per share) \| $ / shares	$ 2.57
Granted (in dollars per share) \| $ / shares	0
Exercised (in dollars per share) \| $ / shares	0
Forfeited (in dollars per share) \| $ / shares	0
Ending balance (in dollars per share) \| $ / shares	2.57
Exercisable at the period end (in dollars per share) \| $ / shares	$ 2.57

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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- Definition

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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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Number of options outstanding, including both vested and non-vested options.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average grant-date fair value of non-vested options forfeited.

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Weighted average grant-date fair value of non-vested options outstanding.

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Number of share options (or share units) exercised during the current period.

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Stock Based Compensation - Stock Appreciation Rights (Details) - Stock Appreciation Rights (SARs)	3 Months Ended
	Mar. 31, 2021 $ / shares shares
Number of Shares
Beginning Balance (in shares) \| shares	180,925
Granted (in shares) \| shares	0
Exercised (in shares) \| shares	0
Forfeited (in shares) \| shares	0
Ending Balance (in shares) \| shares	180,925
Exercisable at the end of period (in shares) \| shares	73,888
Weighted Average Grant Date Fair Value
Beginning balance (in dollars per share) \| $ / shares	$ 2.57
Granted (in dollars per share) \| $ / shares	0
Exercised (in dollars per share) \| $ / shares	0
Forfeited (in dollars per share) \| $ / shares	0
Ending balance (in dollars per share) \| $ / shares	2.57
Exercisable at the period end (in dollars per share) \| $ / shares	$ 2.57