Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Line Items]
Valuation allowance	$ 16,894,000	$ 12,655,000
Increase in valuation allowance	4,200,000	3,700,000
Undistributed earnings	36,400,000	16,400,000	$ 4,900,000
Unrecognized tax benefits	26,915,000	22,239,000	21,322,000	$ 16,973,000
Unrecognized tax benefits that would affect effective tax rate	13,900,000	13,000,000	$ 15,800,000
Accrued interest and penalties	500,000	400,000
Liability for interest and penalties	600,000	$ 1,100,000
Research Tax Credit Carryforward
Income Tax Disclosure [Line Items]
Tax credit carryforward	1,100,000
Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	0
Tax credit carryforward	0
Foreign Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	17,200,000
State and Local Jurisdiction
Income Tax Disclosure [Line Items]
Operating loss carryforwards	0
Tax credit carryforward	$ 39,200,000