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INCOME TAXES - Summary of Significant Components of Company's Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Deferred Tax Assets: |  |  |
Asset Reserves | $ 19,609 | $ 17,680 |
Deferred Compensation | 6,968 | 6,798 |
Section 163(j) - Interest Expense Limitation | 1,777 | 0 |
State Investment and Research and Development Tax Credit Carryforwards, Net of Federal Tax | 1,430 | 1,128 |
Customer Advanced Payments and Deferred Revenue | 870 | 1,917 |
Net Operating Loss Carryforwards and Other | 11,178 | 11,307 |
Goodwill and Intangible Assets | 1,001 | 1,277 |
ASC 606 Revenue Recognition | 92 | 197 |
Research & Development Costs | 25,659 | 19,892 |
Lease Liabilities | 6,952 | 3,201 |
Other | 5,308 | 6,135 |
Total Gross Deferred Tax Assets | 80,844 | 69,532 |
Valuation Allowance | (65,640) | (57,369) | $ (43,500)
Deferred Tax Assets | 15,204 | 12,163 |
Deferred Tax Liabilities: |  |  |
Depreciation | 8,593 | 8,886 |
ASC 606 Revenue Recognition - Section 481(a) Adjustment | 227 | 525 |
Lease Assets | 6,595 | 2,905 |
Earnout Income Accrual | 99 | 0 |
Other | 997 | 1,005 |
Deferred Tax Liabilities | 16,511 | 13,321 |
Net Deferred Tax Liabilities | $ (1,307) | $ (1,158) |

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