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INCOME TAXES - Significant Components of Company's Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Deferred Tax Assets: |  |
Asset Reserves | $ 17,462 | $ 18,189
Deferred Compensation | 7,424 | 7,564
Section 163(j) - Interest Expense Limitation | 891 | 0
State Investment and Research and Development Tax Credit Carryforwards, Net of Federal Tax | 4,674 | 866
Customer Advanced Payments and Deferred Revenue | 1,301 | 2,216
Net Operating Loss Carryforwards and Other | 15,617 | 11,244
Goodwill and Intangible Assets | 1,082 | 2,069
ASC 606 Revenue Recognition | 1,817 | 2,311
Lease Liabilities | 4,178 | 5,545
Other | 5,540 | 2,300
Total Gross Deferred Tax Assets | 59,986 | 52,304
Valuation Allowance for Federal and State Deferred Tax Assets and Tax Credit Carryforwards, Net of Federal Tax | (43,519) | (37,168)
Deferred Tax Assets | 16,467 | 15,136
Deferred Tax Liabilities: |  |
Depreciation | 9,393 | 10,166
ASC 606 Revenue Recognition - Section 481(a) Adjustment | 1,030 | 928
Lease Assets | 3,539 | 4,506
Earnout Income Accrual | 2,603 | 0
Other | 1,050 | 1,186
Deferred Tax Liabilities | 17,615 | 16,786
Net Deferred Tax Liabilities | $ (1,148) | $ (1,650)

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