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Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Apr. 01, 2016	Dec. 31, 2015
Income Taxes [Line Items]
Effective tax rate	47.80%	31.00%	34.30%	25.80%
U.S. statutory tax rate	34.00%	34.00%	34.00%	34.00%
Atoll GmbH
Income Taxes [Line Items]
Business combination, intangible assets					$ 7,561,000
Deferred tax liabilities					2,202,000
Deferred tax assets, net operating losses					3,039,000
Deferred tax assets					$ 885,000
Latest Tax Year
Income Taxes [Line Items]
Net operating loss and business tax credit carry forwards expiration date			At various dates through December 2035.
Available to Reduce Future Federal Income Taxes
Income Taxes [Line Items]
Net operating loss carry forwards						$ 46,984,000
Business tax credit carry forwards						$ 1,920,000

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