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Income Taxes - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Tax Contingency [Line Items] |  |  |
Valuation allowance | $ 7,931 | $ 7,534 |
Interest rate swaps | 184 | 401 |
Net operating losses | 10,010 | 10,099 |
Unrecognized tax benefits | 1,600 | 600 | $ 600
Unrecognized tax benefits that would impact effective tax rate | 705 | 80 |
Operating loss carryforward | 28,911 | 22,716 |
Interest deduction carryforward | 12,300 |  |
Earnings with no repatriation tax | 0 |  |
Amount of (decrease) increase included in tax expense for interest and penalties related to uncertain tax positions | (50) | (60) | $ (20)
Tax Cuts and Jobs Act of 2017, incomplete accounting, change in tax rate, deferred tax liability, provisional income tax benefit |  | 13,900 |
Foreign Tax Authority |  |  |
Income Tax Contingency [Line Items] |  |  |
Deferred tax assets, foreign | 7,500 | 6,871 |
Operating loss carryforward | 25,000 |  |
State |  |  |
Income Tax Contingency [Line Items] |  |  |
Net operating losses | 23,340 |  |
Federal |  |  |
Income Tax Contingency [Line Items] |  |  |
Net operating losses | 7,200 |  |
Operating loss carryforward | 28,300 |  |
Subsidiaries | State |  |  |
Income Tax Contingency [Line Items] |  |  |
Net operating losses | $ 247 | $ 262 |

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