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Stock Based Compensation - Stock Appreciation Rights (Details) - Stock Appreciation Rights (SARs) - Long Term Equity Incentive Plan - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Number of Shares, Stock Appreciation Rights
Beginning Balance	222,112	0
Granted	0	226,021
Vested	0	0
Forfeited	(41,187)	(3,909)
Ending Balance	180,925	222,112
Exercisable at the end of period	73,888	29,028
Weighted Average Grant Date Fair Value, Stock Appreciation Rights
Beginning balance	$ 2.57	$ 0
Granted	0	2.57
Vested	0	0
Forfeited	2.57	2.57
Ending balance	2.57	2.57
Exercisable at the Period end	$ 2.57	$ 2.57

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- Definition

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 price of options that were either forfeited or expired.

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

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

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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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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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