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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2017
Income Taxes |
Schedule of components of loss before income taxes |
|  | Year Ended December 31, |
|  | 2017 |  | 2016 |  | 2015 |
Domestic |  | $ | (31,714) |  | $ | (41,162) |  | $ | (36,230) |
Foreign |  |  | (4,866) |  |  | (5,079) |  |  | (3,804) |
Loss before income taxes |  | $ | (36,580) |  | $ | (46,241) |  | $ | (40,034) |
Schedule of components of income tax benefit |
|  | Year Ended December 31, |
|  | 2017 |  | 2016 |  | 2015 |
Current federal benefit |  | $ | 40 |  | $ | 215 |  | $ | 280 |
Current state benefit (expense) |  |  | 3,545 |  |  | 181 |  |  | (571) |
Current foreign benefit |  |  | 2,492 |  |  | — |  |  | — |
Deferred federal (expense) benefit |  |  | (51) |  |  | 5,795 |  |  | 12,499 |
Deferred state benefit (expense) |  |  | 697 |  |  | (847) |  |  | 860 |
Deferred foreign (expense) benefit |  |  | (1,409) |  |  | 1,105 |  |  | 687 |
Income tax benefit |  | $ | 5,314 |  | $ | 6,449 |  | $ | 13,755 |
Schedule of the difference between the income tax provision and the amount computed by applying the statutory federal income tax rate to losses before income taxes |
|  | Year Ended December 31, |
|  | 2017 |  | 2016 |  | 2015 |
Tax benefit computed at statutory rate of 35% |  | $ | 12,803 |  | $ | 16,184 |  | $ | 14,012 |
Change in valuation allowance |  |  | (4,564) |  |  | (10,200) |  |  | (502) |
State income tax benefit (expense), net of federal tax |  |  | 2,757 |  |  | (433) |  |  | 423 |
Foreign losses |  |  | 1,593 |  |  | 985 |  |  | 954 |
Transaction costs |  |  | — |  |  | — |  |  | (445) |
Tax reform impact to deferred tax balances (1) |  |  | (7,590) |  |  | — |  |  | — |
Other |  |  | 315 |  |  | (87) |  |  | (687) |
Income tax benefit |  | $ | 5,314 |  | $ | 6,449 |  | $ | 13,755 |
| (1) |  | Due to the Tax Cuts and Jobs Act enacted on December 22, 2017, the Company’s domestic deferred tax assets and liabilities were remeasured from 35% to 21% as of December 31, 2017. The change in tax rate resulted in a decrease to the gross domestic deferred tax asset which is offset by a corresponding decrease to the valuation allowance.
Schedule of the principal components of the Company's net deferred tax (liabilities) assets |
|  | December 31, |
|  | 2017 |  | 2016 |
Deferred tax assets: |  |  |  |  |  |  |
Federal tax net operating loss ("NOL") carryforward |  | $ | 21,014 |  | $ | 32,746 |
Foreign tax NOL carryforward |  |  | 4,410 |  |  | 4,486 |
Deferred revenue |  |  | 626 |  |  | 462 |
Restricted stock and restricted stock unit awards |  |  | 192 |  |  | 318 |
Workers’ compensation |  |  | 64 |  |  | 74 |
State tax NOL carryforward |  |  | 1,529 |  |  | 1,223 |
Self-insurance |  |  | 128 |  |  | 219 |
Canadian start-up costs |  |  | 156 |  |  | 275 |
Alternative Minimum Tax ("AMT") credit carryforward |  |  | 315 |  |  | 315 |
Foreign tax credit |  |  | — |  |  | 1,874 |
Foreign deferred taxes |  |  | 874 |  |  | (535) |
Other comprehensive income |  |  | 242 |  |  | 786 |
Uncertain tax positions |  |  | — |  |  | 512 |
Other |  |  | 80 |  |  | 271 |
Gross deferred tax assets |  |  | 29,630 |  |  | 43,026 |
Less valuation allowances |  |  | (17,366) |  |  | (13,602) |
Net deferred tax assets |  |  | 12,264 |  |  | 29,424 |
Deferred tax liabilities: |  |  |  |  |  |  |
Property and equipment |  |  | (12,914) |  |  | (29,035) |
Net deferred tax (liabilities) assets |  | $ | (650) |  | $ | 389 |
Foreign deferred tax (liabilities) assets |  | $ | (874) |  | $ | 535 |
Domestic deferred tax assets (liabilities) |  |  | 224 |  |  | (146) |
Net deferred tax (liabilities) assets |  | $ | (650) |  | $ | 389 |
Schedule of Company’s gross uncertain tax positions |
|  | December 31, |
|  | 2017 |  | 2016 |
Balance at beginning of year |  | $ | 1,489 |  | $ | 1,684 |
Decrease in prior year tax positions |  |  | — |  |  | (14) |
Increase in current year tax positions |  |  | — |  |  | 157 |
Liability statute expiration |  |  | (1,489) |  |  | (338) |
Balance at end of year |  | $ | — |  | $ | 1,489 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32840-109319 + Details
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