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SHARE-BASED PAYMENTS - Schedule of Share-based Compensation, Restricted Stock, Restricted Stock Units Activity and SAR's (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based Payment Arrangement, Expense | $ 862 | $ 697 |
Equity Option |  |  |
Weighted Average Grant Date Fair Value |  |  |
Nonvested, weighted average grant date fair value, beginning of period (in dollars per share) | $ 1.34 | $ 0.94 | $ 0.94
Nonvested, weighted average grant date fair value, end of period (in dollars per share) | $ 2.53 |  | $ 1.34
Employee Stock Option |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based Payment Arrangement, Expense | $ 32 | $ 200 |
Weighted Average Grant Date Fair Value |  |  |
Unrecognized Compensation Costs Related To Unvested Stock Options | 120 |  |
Restricted Stock Units (RSUs) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based Payment Arrangement, Expense | $ 484 | $ 362 |
Number of Shares |  |  |
Granted, nonvested, number of shares (in shares) | 330,000 | 440,000 |
Weighted Average Grant Date Fair Value |  |  |
Unrecognized Compensation Costs Related To R S U Awards | $ 2,310 |  |
Restricted Stock Units (RSUs) | Equity Option |  |  |
Number of Shares |  |  |
Number of nonvested shares, beginning of period (in shares) | 900,064 | 1,094,056 | 1,094,056
Granted, nonvested, number of shares (in shares) | 329,377 |  | 441,241
Vested, number of shares (in shares) | (518,856) |  | (635,233)
Number of nonvested shares, end of period (in shares) | 710,585 |  | 900,064
Weighted Average Grant Date Fair Value |  |  |
Nonvested, weighted average grant date fair value, beginning of period (in dollars per share) | $ 2.94 | $ 1.98 | $ 1.98
Granted, nonvested, weighted average grant date fair value (in dollars per share) | 6.43 |  | 3.89
Vested, weighted average grant date fair value (in dollars per share) | 2.93 |  | 1.94
Nonvested, weighted average grant date fair value, end of period (in dollars per share) | $ 4.56 |  | $ 2.94
Stock Appreciation Rights (SARs) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based Payment Arrangement, Expense | $ 346 | $ 135 |
Number of Shares |  |  |
Number of nonvested shares, beginning of period (in shares) | 1,672,422 | 1,720,623 | 1,720,623
Granted, nonvested, number of shares (in shares) | 730,686 |  |
Number of nonvested shares, end of period (in shares) | 2,403,108 |  | 1,672,422
Weighted Average Grant Date Fair Value |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Exercised, Weighted Average Exercise Price |  |  | $ 2.92
Nonvested, weighted average grant date fair value, beginning of period (in dollars per share) | $ 2.92 | $ 2.92 | 2.92
Granted, nonvested, weighted average grant date fair value (in dollars per share) | 6.47 |  |
Nonvested, weighted average grant date fair value, end of period (in dollars per share) | $ 4.00 |  | $ 2.92
Unrecognized Compensation Costs Related To R S U Awards | $ 2,280 |  |
Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option Equity Instruments, Exercisable, Number | 1,098,873 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Exercised |  |  | 48,201
Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option Equity Instruments, Exercisable, Weighted Average Exercise Price | $ 2.92 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms | 2 years 8 months 23 days |  |
Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option Equity Instruments, Exercisable, Weighted Average Remaining Contractual Term | 1 year 9 months 21 days |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding | $ 12,377 |  |
Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option Equity Instruments, Exercisable, Aggregate Intrinsic Value | $ 6,846 |  |
Stock Appreciation Rights (SARs) | Equity Option |  |  |
Number of Shares |  |  |
Number of nonvested shares, beginning of period (in shares) | 573,549 | 1,720,623 | 1,720,623
Granted, nonvested, number of shares (in shares) | 730,686 |  |
Vested, number of shares (in shares) |  |  | (1,147,074)
Number of nonvested shares, end of period (in shares) | 1,304,235 |  | 573,549
Weighted Average Grant Date Fair Value |  |  |
Nonvested, weighted average grant date fair value, beginning of period (in dollars per share) | $ 1.19 | $ 1.25 | $ 1.25
Granted, nonvested, weighted average grant date fair value (in dollars per share) | 3.60 |  |
Vested, weighted average grant date fair value (in dollars per share) |  |  | 1.27
Nonvested, weighted average grant date fair value, end of period (in dollars per share) | $ 2.54 |  | $ 1.19

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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). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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