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Income Taxes - Additional Information (Detail) - USD ($) | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Income Taxes [Line Items] |  |  |
Aggregate undistributed earnings of the foreign subsidiaries | $ 44,700,000 |  |
Unrecognized deferred income tax liability of the foreign subsidiaries | $ 7,100,000 |  |
State and local net operating loss carry forwards year start | 2018 |  |
State and local net operating loss carry forwards year end | 2033 |  |
Valuation reserve | $ 3,100,000 | $ 1,500,000 |
Additional income tax expense (benefit) | $ 200,000 | 600,000 | $ 100,000
Income tax positions recognized, minimum percentage | 50.00% |  |
Expense for interest and penalties | $ 0 | $ 0 | $ 0
Federal Jurisdiction [Member] |  |  |
Income Taxes [Line Items] |  |  |
Net operating loss carry forward | 11,500,000 |  |
State and Local Jurisdiction [Member] |  |  |
Income Taxes [Line Items] |  |  |
Net operating loss carry forward | 12,400,000 |  |
Overseas Jurisdictions [Member] |  |  |
Income Taxes [Line Items] |  |  |
Net operating loss carry forward | $ 7,000,000 |  |

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from reserves and accruals. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32621-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32632-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=68052875&loc=d3e28680-109314 + Details
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