Income Taxes (Tables)

9 Months Ended

Sep. 30, 2017

Income Tax Disclosure [Abstract]

Summary of Activity Related to Gross Unrecognized Tax Benefits

The following table summarizes the activity related to the gross unrecognized tax benefits from January 1, 2017 through September 30, 2017:

Balance as of January 1, 2017	$	3,087
Increases related to prior year tax positions	—
Decreases related to prior year tax positions	(1,720		)
Increases related to current year tax positions	—
Decreases related to current year tax positions	—
Effect of exchange rate changes	85
Balance as of September 30, 2017	$	1,452