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v3.20.4

Income Taxes - Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Deferred tax assets- |  |
Accounts receivable and allowance for doubtful accounts | $ 2,186 | $ 1,660
Stock-based compensation | 2,791 | 2,561
Accrued liabilities and expenses | 39,761 | 25,569
Lease liabilities | 22,768 | 20,873
Net operating loss carryforwards | 12,127 | 2,750
Intangible assets |  | 7,988
Other | 627 | 525
Subtotal | 80,260 | 61,926
Valuation allowances | (514) | (369)
Total deferred tax assets | 79,746 | 61,557
Property and equipment | (13,877) | (11,286)
Deferred tax liabilities | 1,339 | 1,425
Lease right-of-use asset | (22,715) | (20,873)
Long-term contracts | (609) | (876)
Intangible assets | (242) |
Goodwill | (11,615) | (6,020)
Other | (2,626) | (2,004)
Total deferred tax liabilities | (51,684) | (41,059)
Net deferred tax assets | 28,062 | 20,498
Deferred income tax assets |  |
Deferred tax assets | $ 29,401 | $ 21,923

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