Balance Sheet Components - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' Equity, Beginning of period	$ 402,388	$ 390,098	$ 348,997
Other comprehensive income (loss) before reclassifications	(6,649)	(1,369)
Amounts reclassified from other comprehensive income (loss), net of tax	(140)	0
Other comprehensive loss	(6,789)	(1,369)	(1,532)
Stockholders' Equity, End of period	431,607	402,388	390,098
Foreign currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' Equity, Beginning of period	(2,730)	(1,361)
Other comprehensive income (loss) before reclassifications	(8,034)	(1,369)
Amounts reclassified from other comprehensive income (loss), net of tax	0	0
Other comprehensive loss	(8,034)	(1,369)
Stockholders' Equity, End of period	(10,764)	(2,730)	(1,361)
Unrealized gain (loss) on interest rate swap hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' Equity, Beginning of period	0	0
Other comprehensive income (loss) before reclassifications	1,385	0
Amounts reclassified from other comprehensive income (loss), net of tax	(140)	0
Other comprehensive loss	1,245	0
Stockholders' Equity, End of period	1,245	0	0
Accumulated Other Comprehensive Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' Equity, Beginning of period	(2,730)	(1,361)	171
Other comprehensive loss	(6,789)	(1,369)	(1,532)
Stockholders' Equity, End of period	$ (9,519)	$ (2,730)	$ (1,361)