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Income Taxes - Schedule of Reconciliation of Effective Income Tax Rate (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Income Tax Disclosure [Abstract] |  |  |
U.S. federal statutory income tax rate | $ (7,662) | $ (851) | $ 6,017
U.S. state and local income taxes, net of U.S. federal income tax benefits | (1,075) | (69) | 1,432
Unrecognized tax benefit | (603) | 589 | 6
Valuation allowance | 1,208 | 0 | 0
Non-taxable income | (1,267) | (696) | (593)
Non-deductible legal and regulatory expenses | 0 | 0 | 5,296
Provision to return adjustments | (4,167) | 442 | (3)
Change in tax rates | 264 | 305 | 53
Foreign tax rate differentials | 143 | 145 | (447)
Other non-deductible expenses | 897 | 541 | 373
Current and Deferred Income Tax Expense (Benefit) from Continuing Operations | $ (12,262) | $ 406 | $ 12,134
U.S. federal statutory income tax rate, percent | 35.00% | 35.00% | 35.00%
U.S. state and local income taxes, net of U.S. federal income tax benefits, percent | 4.90% | 2.80% | 8.30%
Unrecognized tax benefits, percent | 2.80% | (24.30%) | 0.00%
Effective Income Tax Rate Reconciliation, Valuation Allowance, Percent | (5.50%) | 0.00% | 0.00%
Other, percent | 5.80% | 28.70% | (3.40%)
Effective Income Tax Rate Reconciliation, Non-deductible legal and regulatory expenses, Percent | 0.00% | 0.00% | 30.80%
Adjustment to reflect prior year tax return filings, percent | 19.00% | (18.20%) | 0.00%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent | (1.20%) | (12.50%) | 0.30%
Non-U.S. operations, percent | (0.70%) | (6.00%) | (2.60%)
Business promotion and other non-deductible expenses, percent | (4.10%) | (22.20%) | 2.20%
Total income tax expense, percent | 56.00% | (16.70%) | 70.60%

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