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Income Taxes - Additional Information (Detail) € in Thousands, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016 USD ($)	Jan. 01, 2017 USD ($)	Dec. 31, 2016 EUR (€)
Income Taxes [Line Items]
Effective tax rate	24.60%	36.00%
U.S. statutory tax rate	34.00%	34.00%
Latest Tax Year
Income Taxes [Line Items]
Net operating loss and business tax credit carry forwards expiration date			At various dates through December 2036
Domestic Tax Authority
Income Taxes [Line Items]
Business tax credits carry forwards			$ 1,745
State
Income Taxes [Line Items]
Business tax credits carry forwards			442
ASU No. 2016-09 | U S Federal And State Jurisdiction
Income Taxes [Line Items]
Net operating loss carry forwards				$ 5,300
Increase in valuation allowance				5,300
Impact of adopting ASU 2016-09 on retained earnings				$ 0
United States
Income Taxes [Line Items]
Net operating loss carry forwards			48,550
Germany
Income Taxes [Line Items]
Net operating loss carry forwards			$ 2,407		€ 2,287

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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