Fair Value Measurement (Details) $ in Thousands	Mar. 31, 2017 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents and restricted cash	$ 200,377
Available-for-sale investments	84,813	[1]
Foreign currency exchange contracts	6,723	[2]
Assets measured at fair value at March 31, 2017	291,913
Foreign currency exchange contracts	594	[3]
Liabilities measured at fair value at March 31, 2017	594
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents and restricted cash	200,377
Available-for-sale investments	84,813	[1]
Foreign currency exchange contracts	0	[2]
Assets measured at fair value at March 31, 2017	285,190
Foreign currency exchange contracts	0	[3]
Liabilities measured at fair value at March 31, 2017	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents and restricted cash	0
Available-for-sale investments	0	[1]
Foreign currency exchange contracts	6,723	[2]
Assets measured at fair value at March 31, 2017	6,723
Foreign currency exchange contracts	594	[3]
Liabilities measured at fair value at March 31, 2017	$ 594

[1] Included in “Short-term investments” on the Company’s Condensed Consolidated Balance Sheets.

[2] Included in “Prepaid expenses and other current assets” and “Other non-current assets” on the Company’s Condensed Consolidated Balance Sheets.

[3] Included in “Other accrued liabilities” and “Other non-current liabilities” on the Company’s Condensed Consolidated Balance Sheets.