Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	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