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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, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Tax Disclosure [Abstract] |  |  |
U.S. federal statutory income tax rate | $ 9,419 | $ 6,907 | $ (7,662)
U.S. state and local income taxes, net of U.S. federal income tax benefits | 3,144 | 1,430 | (1,075)
Unrecognized tax benefit | 0 | (9) | (603)
Valuation allowance | 1,833 | 89 | 1,208
Non-taxable income | (637) | (1,055) | (1,267)
Provision to return adjustments | (326) | (1,277) | (4,167)
Impact of the TCJA | 0 | (9,013) | 0
Change in state and foreign tax rates | 267 | (353) | 264
Foreign tax rate differentials | 112 | 974 | 143
Excess tax benefits from share-based awards | (81) | (493) | 0
Other non-deductible expenses | 2,246 | 666 | 897
Current and Deferred Income Tax Expense (Benefit) from Continuing Operations | $ 15,977 | $ (2,134) | $ (12,262)
U.S. federal statutory income tax rate, percent | 21.00% | 35.00% | 35.00%
U.S. state and local income taxes, net of U.S. federal income tax benefits, percent | 7.00% | 7.20% | 4.90%
Unrecognized tax benefits, percent | 0.00% | 0.00% | 2.80%
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent | 4.10% | 0.50% | (5.50%)
Other, percent | (1.40%) | (5.30%) | 5.80%
Adjustment to reflect prior year tax return filings, percent | (0.70%) | (6.50%) | 19.00%
Effective Income Tax Reconciliation, impact of the TCJA Tax Reform, Percent | 0.00% | (45.70%) | 0.00%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent | 0.60% | (1.80%) | (1.20%)
Non-U.S. operations, percent | 0.20% | 4.90% | (0.70%)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent | (0.20%) | (2.50%) | (0.00%)
Business promotion and other non-deductible expenses, percent | 5.00% | 3.40% | (4.10%)
Total income tax expense, percent | 35.60% | (10.80%) | 56.00%

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