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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2021
Income Tax Disclosure [Abstract]  
Schedule of components of income from continuing operation before income taxes
The components of income before income taxes are as follows:
 Years ended December 31,
 20212020
 (in thousands)
United States$4,659 $16,990 
Foreign4,481 346 
Income before income taxes$9,140 $17,336 
Schedule of components of income tax expense
The components of income tax expense for the years ended December 31, 2021 and 2020 were as follows:
 FederalStateForeignTotal
 (in thousands)
2021    
Current$— $(2)$1,597 $1,595 
Deferred4,072 121 — 4,193 
Total$4,072 $119 $1,597 $5,788 
2020
Current$— $(88)$723 $635 
Deferred6,251 702 — 6,953 
Total$6,251 $614 $723 $7,588 
Schedule of reconciliation of the federal income tax expense at the statutory rate to the effective income tax expense
The following is a reconciliation of the federal income tax expense at the statutory rate of 21% for the years ended December 31, 2021 and 2020 to the effective income tax expense:
 Years Ended December 31,
 20212020
 (in thousands)
Statutory federal income tax expense$1,844 $3,640 
State taxes, net of federal benefit119 633 
Foreign tax paid— — 
Foreign jurisdiction rate differential705 508 
Permanent differences-nondeductible executive compensation2,042 2,748 
Permanent differences and other1,078 59 
Effective income tax expense$5,788 $7,588 
Summary of activity related to the Company's unrecognized tax benefits
The following table summarizes the activity related to the Company’s unrecognized tax benefits:
 (in thousands)
Balance as of December 31, 2019$270 
Increases related to current year tax positions66 
Decreases due to tax positions expired(6)
Balance as of December 31, 2020330 
Decreases related to current year tax positions— 
Decreases due to tax positions expired(317)
Balance as of December 31, 2021$13 
Schedule of tax effects of temporary differences of the deferred tax assets and liabilities
The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and liabilities are presented below:
 As of December 31,
 20212020
 (in thousands)
Deferred tax assets:  
Unearned lease revenue$2,217 $2,519 
State taxes— 10 
Inventory1,486 2,153 
Reserves and allowances6,781 4,356 
Other accruals2,577 1,769 
Foreign tax credit— — 
Lease liability146 198 
Net operating loss carry forward68,168 74,045 
California alternative minimum tax credit33 33 
Charitable contributions65 
Total deferred tax assets81,410 85,148 
Less: valuation allowance(518)(468)
Net deferred tax assets80,892 84,680 
Deferred tax liabilities:
Depreciation and impairment on aircraft engines and equipment(183,131)(163,773)
Inventory— — 
Notes receivable(15,911)(34,426)
Right of use liability(139)(184)
Other deferred tax liabilities(4,595)(4,616)
Net deferred tax liabilities(203,776)(202,999)
Other comprehensive (income) loss deferred tax liability(1,448)1,481 
Net deferred tax liabilities$(124,332)$(116,838)