| Income Tax Disclosure [Abstract] | Period [Axis] |
|---|
2016-01-01 - 2016-12-31 |
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Income Tax Disclosure [Abstract] | |
Schedule of Effective Income Tax Rate Reconciliation | Atlas' effective tax rate was (416.8)%, 34.5%, and (48.3)% for the years ended December 31, 2016, 2015, and 2014, respectively. The table below reconciles the U.S. statutory marginal income tax rate to the effective tax rate ($ in '000s): | | | | | | | | | | | | | | | | | | | | | | Year Ended December 31, | 2016 | | 2015 | | 2014 | | Amount | | % | | Amount | | % | | Amount | | % | Provision for taxes at U.S. statutory marginal income tax rate | $ | 179 |
| | 35.0 | % | | $ | 7,716 |
| | 35.0 | % | | $ | 4,058 |
| | 34.0 | % | Provision for deferred tax assets deemed unrealizable (valuation allowance) | — |
| | — | % | | — |
| | — | % | | (9,446 | ) | | (79.1 | )% | Nondeductible expenses | 24 |
| | 4.7 | % | | 124 |
| | 0.6 | % | | 136 |
| | 1.1 | % | Tax-exempt income | (39 | ) | | (7.6 | )% | | (89 | ) | | (0.4 | )% | | — |
| | — | % | State tax (net of federal benefit) | 28 |
| | 5.5 | % | | 118 |
| | 0.5 | % | | 11 |
| | 0.1 | % | Tax net operating loss limitation write-down (excluding valuation allowance) | — |
| | — | % | | — |
| | — | % | | (519 | ) | | (4.3 | )% | Nondeductible acquisition accounting adjustment | (2,204 | ) | | (430.5 | )% | | 329 |
| | 1.5 | % | | — |
| | — | % | Change in statutory tax rate | — |
| | — | % | | (471 | ) | | (2.1 | )% | | — |
| | — | % | Other | (122 | ) | | (23.9 | )% | | (111 | ) | | (0.6 | )% | | (7 | ) | | (0.1 | )% | Provision for income taxes for continuing operations | $ | (2,134 | ) | | (416.8 | )% | | $ | 7,616 |
| | 34.5 | % | | $ | (5,767 | ) | | (48.3 | )% |
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Schedule of Components of Income Tax Expense (Benefit) | Income tax (benefit) expense consists of the following for the years ended December 31, 2016, 2015, and 2014 ($ in '000s): | | | | | | | | | | | Year Ended December 31, | 2016 | 2015 | 2014 | Current tax (benefit) expense | $ | (2,586 | ) | $ | 7,790 |
| $ | 3,009 |
| Deferred tax expense (benefit), net of change in valuation allowance | 452 |
| (174 | ) | (8,776 | ) | Total | $ | (2,134 | ) | $ | 7,616 |
| $ | (5,767 | ) |
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Schedule of Deferred Tax Assets and Liabilities | The components of deferred income tax assets and liabilities as of December 31, 2016 and December 31, 2015 are as follows ($ in '000s): | | | | | | | | | December 31, 2016 | December 31, 2015 | Deferred tax assets: | | | Losses carried forward | $ | 14,535 |
| $ | 12,656 |
| Unpaid claims liabilities and unearned premiums | 8,546 |
| 8,122 |
| Tax credits | 662 |
| 662 |
| Investments | — |
| 36 |
| Commissions | 1,269 |
| 1,306 |
| All other | 2,184 |
| 1,457 |
| Total gross deferred tax assets | 27,196 |
| 24,239 |
| | | | Deferred tax liabilities: | | | Deferred policy acquisition costs | 4,628 |
| 3,582 |
| Investments | 475 |
| — |
| Fixed assets | 559 |
| 401 |
| Intangible assets | 1,328 |
| 1,465 |
| All other | 1,708 |
| 1,625 |
| Total gross deferred tax liabilities | 8,698 |
| 7,073 |
| Net deferred tax assets | $ | 18,498 |
| $ | 17,166 |
|
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Summary of Operating Loss Carryforwards | Amounts and expiration dates of the operating loss carryforwards as of December 31, 2016 are as follows ($ in '000s): | | | | | | Year of Occurrence | Year of Expiration | Amount | 2001 | 2021 | $ | 5,007 |
| 2002 | 2022 | 4,317 |
| 2006 | 2026 | 7,825 |
| 2007 | 2027 | 5,131 |
| 2008 | 2028 | 1,949 |
| 2009 | 2029 | 1,949 |
| 2010 | 2030 | 1,949 |
| 2011 | 2031 | 4,166 |
| 2012 | 2032 | 9,235 |
| 2015 | 2035 | 1 |
| Total | | $ | 41,529 |
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