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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2016
Income Taxes |
Schedule of components of income (loss) from continuing operation before income taxes |
|  | Years ended December 31, |
|  | 2016 |  | 2015 |  | 2014 |
|  | (in thousands) |
U.S. |  | $ | 21,634 |  | $ | 11,319 |  | $ | 10,433 |
Non U.S. |  |  | 2,312 |  |  | 1,456 |  |  | 1,307 |
Income from before income taxes |  | $ | 23,946 |  | $ | 12,775 |  | $ | 11,740 |
Schedule of components of income tax expense |
|  | Federal |  | State |  | Foreign |  | Total |
|  | (in thousands) |
December 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |
Current |  | $ | 324 |  | $ | 14 |  | $ | 440 |  | $ | 778 |
Deferred |  |  | 8,807 |  |  | 292 |  |  | — |  |  | 9,099 |
Total 2016 |  | $ | 9,131 |  | $ | 306 |  | $ | 440 |  | $ | 9,877 |
December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |
Current |  | $ | (208) |  | $ | 13 |  | $ | 476 |  | $ | 281 |
Deferred |  |  | 4,871 |  |  | 1,163 |  |  | — |  |  | 6,034 |
Total 2015 |  | $ | 4,663 |  | $ | 1,176 |  | $ | 476 |  | $ | 6,315 |
December 31, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |
Current |  | $ | 109 |  | $ | 179 |  | $ | 311 |  | $ | 599 |
Deferred |  |  | 3,797 |  |  | 164 |  |  | — |  |  | 3,961 |
Total 2014 |  | $ | 3,906 |  | $ | 343 |  | $ | 311 |  | $ | 4,560 |
Schedule of reconciliation of the federal income tax expense at the statutory rate to the effective income tax expense |
|  | Years Ended December 31, |
|  | 2016 |  | 2015 |  | 2014 |
|  | (in thousands and % of pre-tax income) |
|  | $ |  | % |  | $ |  | % |  | $ |  | % |
Statutory federal income tax expense |  |  | 8,142 |  | 34.0 |  |  | 4,343 |  | 34.0 |  |  | 3,992 |  | 34.0 |
State taxes, net of federal benefit |  |  | 202 |  | 0.8 |  |  | 776 |  | 6.1 |  |  | 118 |  | 1.0 |
Foreign tax paid |  |  | 440 |  | 1.8 |  |  | 476 |  | 3.7 |  |  | 101 |  | 0.9 |
Tax consequences of the sale of engines to WMES |  |  | — |  | — |  |  | (306) |  | (2.4) |  |  | (36) |  | (0.3) |
Uncertain tax positions |  |  | (40) |  | (0.1) |  |  | (195) |  | (1.5) |  |  | (101) |  | (0.9) |
Permanent differences-nondeductible executive compensation |  |  | 1,201 |  | 5.0 |  |  | 1,117 |  | 8.7 |  |  | 768 |  | 6.5 |
Permanent differences and other |  |  | (68) |  | (0.3) |  |  | 104 |  | 0.8 |  |  | (282) |  | (2.4) |
Effective income tax expense |  |  | 9,877 |  | 41.2 |  |  | 6,315 |  | 49.4 |  |  | 4,560 |  | 38.8 |
Summary of activity related to the Company's unrecognized tax benefits |
|  | (in thousands) |
Balance as of December 31, 2014 |  | $ | 464 |
Increases related to current year tax positions |  |  | 5 |
Decreases due to tax positions released |  |  | (195) |
Balance as of December 31, 2015 |  |  | 274 |
Increases related to current year tax positions |  |  | 4 |
Decreases due to tax positions expired |  |  | (72) |
Balance as of December 31, 2016 |  | $ | 206 |
Schedule of tax effects of temporary differences of the deferred tax assets and liabilities |
|  | As of December 31, |
|  | 2016 |  | 2015 |
|  | (in thousands) |
Deferred tax assets: |  |  |  |  |  |  |
Unearned lease revenue |  | $ | 1,839 |  | $ | 1,511 |
State taxes |  |  | 1,035 |  |  | 944 |
Reserves and allowances |  |  | 1,659 |  |  | 898 |
Other accruals |  |  | 2,501 |  |  | 1,767 |
Alternative minimum tax credit |  |  | 377 |  |  | 377 |
Net operating loss carry forward |  |  | 35,693 |  |  | 35,827 |
Charitable contributions |  |  | 52 |  |  | 42 |
Total deferred tax assets |  |  | 43,156 |  |  | 41,366 |
Less: valuation allowance |  |  | (1,280) |  |  | (1,280) |
Net deferred tax assets |  |  | 41,876 |  |  | 40,086 |
Deferred tax liabilities: |  |  |  |  |  |  |
Depreciation and impairment on aircraft engines and equipment |  |  | (147,827) |  |  | (137,496) |
Other deferred tax assets (liabilities) |  |  | 422 |  |  | 981 |
Net deferred tax liabilities |  |  | (147,405) |  |  | (136,515) |
Other comprehensive loss deferred tax asset |  |  | 551 |  |  | 275 |
Net deferred tax liabilities |  | $ | (104,978) |  | $ | (96,154) |

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