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Income Taxes (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Loss before income taxes |  |  |
Domestic | $ (20,577,000) | $ (32,238,000) | $ (39,214,000)
Foreign | (4,628,000) | (4,866,000) | (5,079,000)
Loss before income tax | (25,205,000) | (37,104,000) | (44,293,000)
Income tax benefit |  |  |
Current federal benefit | 55,000 | 40,000 | 215,000
Current state (expense) benefit | (14,000) | 3,545,000 | 181,000
Current foreign benefit |  | 2,492,000 |
Deferred federal (expense) benefit | (274,000) | (51,000) | 5,326,000
Deferred state benefit (expense) | 344,000 | 697,000 | (867,000)
Deferred foreign benefit (expense) | 687,000 | (1,409,000) | 1,105,000
Total income tax benefit | $ 798,000 | $ 5,314,000 | $ 5,960,000
Reconciliation of income tax provision |  |  |
Federal income tax rate (as a percent) | 21.00% | 35.00% | 35.00%
Tax benefit computed at statutory rate of 21% and 35% | $ 5,293,000 | $ 12,986,000 | $ 15,503,000
Change in valuation allowance | (5,811,000) | (4,747,000) | (9,995,000)
State income tax benefit (expense), net of federal tax | 260,000 | 2,757,000 | (446,000)
Foreign losses | 1,319,000 | 1,593,000 | 985,000
Tax reform impact to deferred tax balances |  | (7,590,000) |
Other | (263,000) | 315,000 | (87,000)
Total income tax benefit | 798,000 | 5,314,000 | 5,960,000
Deferred tax assets: |  |  |
Federal tax net operating loss ("NOL") carryforward | 24,848,000 | 21,014,000 |
Foreign tax NOL carryforward | 5,298,000 | 4,410,000 |
Deferred revenue | 697,000 | 626,000 |
Restricted stock and restricted stock unit awards | 320,000 | 192,000 |
Workers' compensation | 60,000 | 64,000 |
State tax NOL carryforward | 2,134,000 | 1,529,000 |
Self-insurance | 111,000 | 128,000 |
Canadian start-up costs | 137,000 | 156,000 |
Alternative Minimum Tax ("AMT") credit carryforward | 315,000 | 315,000 |
Foreign deferred taxes | 466,000 | 874,000 |
Other comprehensive income | 490,000 | 242,000 |
Other | 92,000 | 80,000 |
Gross deferred tax assets | 34,968,000 | 29,630,000 |
Less valuation allowances | (22,806,000) | (17,366,000) |
Net deferred tax assets | 12,162,000 | 12,264,000 |
Deferred tax liabilities: |  |  |
Property and equipment | (12,003,000) | (12,914,000) |
Total net deferred tax liabilities |  | (650,000) |
Total net deferred tax assets | 159,000 |  |
Roll Forward of the Company's unrecognized tax benefits: |  |  |
Balance at beginning of year |  | 1,489,000 |
Liability statute expiration |  | (1,489,000) |
Balance at end of year |  |  | $ 1,489,000
Canada |  |  |
Deferred tax liabilities: |  |  |
Net operating loss carry forwards | 20,379,000 |  |
Foreign |  |  |
Deferred tax liabilities: |  |  |
Total net deferred tax liabilities | (134,000) | (874,000) |
Federal |  |  |
Deferred tax liabilities: |  |  |
Total net deferred tax assets | 293,000 | $ 224,000 |
Net operating loss carry forwards | 118,326,000 |  |
State |  |  |
Deferred tax liabilities: |  |  |
Net operating loss carry forwards | $ 2,702,000 |  |

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