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Income Taxes - Deferred Tax Assets (Liabilities) Components (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Deferred tax assets: |  |
Accrued liabilities | $ 1,660 | $ 78
Deferred revenue | 5,410 | 12,943
Bad debts reserve | 2,248 | 9,291
Deferred compensation | 6,816 | 5,262
Federal net operating loss carryforwards | 8,876 | 7,969
State net operating loss carryforwards | 7,415 | 4,236
Foreign net operating loss carryforwards | 10,036 | 9,401
Lease obligations | 10,142 | 13,791
Capital loss carryforward | 10,365 | 1,563
Intangible assets | 6,153 | 2,716
Basis difference | 6,256 | 8,041
Installment sale | 0 | 8,726
Credits | 9,720 | 0
Fixed assets | 1,249 | 0
Other | 26 | 3,208
Total deferred tax assets | 86,372 | 87,225
Deferred tax liabilities: |  |
Basis difference | (1,555) | 0
Depreciation and amortization | (5,171) | (5,965)
Lease Assets | (6,121) | (9,593)
Other | (439) | 0
Total deferred tax liabilities | (13,286) | (15,558)
Less: valuation allowance | (74,961) | (73,346)
Net deferred income tax (liabilities) assets | $ (1,875) | $ (1,679)

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