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Income Taxes - Deferred tax assets and liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Schedule of tax effects of principal temporary differences that give rise to deferred tax assets |  |
Lease liabilities | $ 28,017 | $ 27,074
Allowance for credit losses | 14,083 | 8,884
Contract liabilities | 8,500 | 8,139
Loss carryforward | 7,307 | 4,459
Other | 6,713 | 1,955
Stock-based compensation | 6,318 | 6,322
Other facility-related costs | 582 | 489
Intangible assets | (84,515) | (65,777)
Property and equipment | (20,421) | (13,120)
Right-of-use lease assets | (19,991) | (21,673)
Valuation allowance | 0 | (4,694)
Net deferred tax liability | $ (53,407) | $ (47,942)

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- Definition The tax effect as of the balance sheet date of the amount of estimated future tax effect attributable to the difference between the tax basis of the deferred gain on sale of property and the basis of the deferred gain on sale of property in accordance with generally accepted accounting principles. + References No definition available. + Details
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