Fair Value Measurement (Tables)

6 Months Ended

Jun. 30, 2015

Fair Value of Financial Instruments [Abstract]

Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

(In thousands)			Fair Value Measurements at June 30, 2015
			Quoted Prices in		Significant Other		Significant
			Active Markets for		Observable		Unobservable
			Identical Assets		Inputs		Inputs
	Total		(Level 1)		(Level 2)		(Level 3)
Assets:
Short-term investments	$	151,901	$	—	$	151,901	$	—
Foreign currency forward exchange contracts not accounted for using hedge accounting		101		—		101		—
	$	152,002	$	—	$	152,002	$	—
Liabilities;
Interest rate swaps	$	186	$	—	$	186	$	—

			Fair Value Measurements at December 31, 2014
			Quoted Prices in		Significant Other		Significant
			Active Markets for		Observable		Unobservable
			Identical Assets		Inputs		Inputs
	Total		(Level 1)		(Level 2)		(Level 3)
Assets:
Short-term investments	$	190,152	$	—	$	190,152	$	—
Liabilities:
Foreign currency forward exchange contracts not accounted for using hedge accounting	$	355	$	—	$	355	$	—