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Percent of payout for performance based stock units

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Remaining contract life of exercisable stock option.

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Remaining contract life of outstanding stock options.

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Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Incremental Grants in Period, Weighted Average Grant Date Fair Value

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Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Incremental shares vested

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Amount of cost capitalized for award under share-based payment arrangement.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of noncash expense for share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

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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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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- Definition

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

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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- Definition

Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Share-Based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands					3 Months Ended
	Mar. 31, 2022	Feb. 23, 2022	Feb. 24, 2021	May 21, 2019	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Share-based Compensation (Details Textual)
Share-based compensation (capitalized)					$ 100	$ 100
Restricted stock activity
Share-based Payment Arrangement, Noncash Expense					1,047	1,070
General and Administrative Expense [Member]
Restricted stock activity
Share-based Payment Arrangement, Noncash Expense					1,000	$ 1,100
Share-based Payment Arrangement, Option [Member]
Share-based Compensation (Details Textual)
Stock option award unrecognized compensation	$ 0				0
Stock option award outstanding aggregate intrinsic value	$ 1,300				1,300
Remaining contract life of outstanding stock options.	5 years 1 month 6 days
Remaining contract life of exercisable stock option	5 years 1 month 6 days
Stock option award exercisable aggregate intrinsic value					$ 1,300
Stock Option Activity
Options outstanding, beginning of period, shares	211,746				211,746		276,009
Options outstanding, beginning of period, weighted average price	$ 26.50				$ 26.50		$ 28.12
Options expired, shares					(64,263)
Options expired, weighted average price					$ 33.48
Options exercisable, end of period, shares	211,746				211,746
Options exercisable, end of period, weighted average price	$ 26.50				$ 26.50
Restricted Stock Units (RSUs) [Member]
Share-based Compensation (Details Textual)
Stock option award unrecognized compensation	$ 4,400				$ 4,400
Unrecognized compensation expense weighted-average period					2 years 6 months
Restricted stock activity
Restricted shares outstanding, beginning of period, shares					344,845
Restricted shares outstanding, beginning of period, weighted average price					$ 8.60
Restricted shares granted, shares					170,866
Restricted shares granted, weighted average price					$ 25.22
Restricted shares vested, shares					(220,578)
Restricted shares vested, weighted average price					$ 9.94
Restricted shares outstanding, end of period, shares	295,133				295,133
Restricted shares outstanding, end of period, weighted average price	$ 17.22				$ 17.22
Performance-based stock unit [Member]
Share-based Compensation (Details Textual)
Stock option award unrecognized compensation	$ 5,200				$ 5,200
Unrecognized compensation expense weighted-average period	2 years 3 months 18 days
Restricted stock activity
Restricted shares outstanding, beginning of period, shares					244,989
Restricted shares outstanding, beginning of period, weighted average price					$ 18.84
Restricted shares granted, shares		122,111	161,389	99,500
Restricted shares granted, weighted average price		$ 36.47	$ 13.13	$ 18.86	$ 24.16
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Incremental shares vested		14,212
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Incremental Grants in Period, Weighted Average Grant Date Fair Value		$ 29.87
Restricted shares vested, shares		(97,812)			(97,812)
Restricted shares vested, weighted average price					$ 29.87
Restricted shares outstanding, end of period, shares	283,500				283,500
Restricted shares outstanding, end of period, weighted average price	$ 17.88				$ 17.88
Percent of payout for performance based stock units	100.00%	150.93%	157.60%	112.90%	100.00%
Approved payout for performance based stock units		117.00%
Minimum [Member] \| Share-based Payment Arrangement, Option [Member]
Share-based Compensation (Details Textual)
Stock option award vesting period					1 year
Minimum [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation (Details Textual)
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term					1 year
Minimum [Member] \| Performance-based stock unit [Member]
Restricted stock activity
Percent of payout for performance based stock units		0.00%	0.00%	0.00%
Maximum [Member] \| Share-based Payment Arrangement, Option [Member]
Share-based Compensation (Details Textual)
Stock option award vesting period					5 years
Maximum [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation (Details Textual)
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term					5 years
Maximum [Member] \| Performance-based stock unit [Member]
Share-based Compensation (Details Textual)
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term		3 years	2 years	3 years
Restricted stock activity
Percent of payout for performance based stock units		200.00%	200.00%	200.00%