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v3.20.4

Income Taxes - Summary of Unrecognized Tax Benefits and Temporary Differences (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Unrecognized tax benefits |  |
Balance at the beginning of the period | $ 270 | $ 182
Increases related to current year tax positions | 66 | 250
Decreases due to tax positions expired | (6) | (162)
Balance at the end of the period | 330 | 270
Uncertain tax positions, reserved for tax exposure in Europe | 300 | 200
Deferred tax assets: |  |
Unearned lease revenue | 2,519 | 1,277
State taxes | 10 | 152
Inventory | 2,153 | 0
Reserves and allowances | 4,356 | 1,988
Other accruals | 1,769 | 4,974
Foreign tax credit | 0 | 19
Lease liability | 198 | 271
Net operating loss carry forward | 74,045 | 12,091
California alternative minimum tax credit | 33 | 0
Charitable contributions | 65 | 57
Total deferred tax assets | 85,148 | 20,829
Less: valuation allowance | (468) | (153)
Net deferred tax assets | 84,680 | 20,676
Deferred tax liabilities: |  |
Depreciation and impairment on aircraft engines and equipment | (163,773) | (118,595)
Inventory | 0 | (2,350)
Notes receivable | (34,426) | (6,640)
Right of use liability | (184) | (260)
Other deferred tax assets (liabilities) | (4,616) | (4,198)
Net deferred tax liabilities | (202,999) | (132,043)
Other comprehensive loss deferred tax liability | 1,481 | 949
Net deferred tax liabilities | (116,838) | $ (110,418)
Federal |  |
Deferred tax liabilities: |  |
Operating loss carryforwards | 348,000 |
State |  |
Deferred tax liabilities: |  |
Operating loss carryforwards | 1,200 |
State | California Franchise Tax Board |  |
Deferred tax liabilities: |  |
Valuation allowance of net operating loss | 400 |
State | Georgia Department of Revenue |  |
Deferred tax liabilities: |  |
Valuation allowance of net operating loss | $ 100 |

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