Balance Sheet Components - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 431,607
Other comprehensive income (loss) before reclassifications	1,099	$ (327)
Amounts reclassified from other comprehensive income (loss), net of tax	6	0
Net current-period other comprehensive income (loss), net of tax	1,105	(327)
Balance at end of period	438,943
Foreign currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(10,764)	(2,730)
Other comprehensive income (loss) before reclassifications	923	(327)
Amounts reclassified from other comprehensive income (loss), net of tax	0	0
Net current-period other comprehensive income (loss), net of tax	923	(327)
Balance at end of period	(9,841)	(3,057)
Unrealized gain (loss) on interest rate swap hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	1,245	0
Other comprehensive income (loss) before reclassifications	176	0
Amounts reclassified from other comprehensive income (loss), net of tax	6	0
Net current-period other comprehensive income (loss), net of tax	182	0
Balance at end of period	1,427	0
AOCI Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(9,519)	(2,730)
Balance at end of period	$ (8,414)	$ (3,057)