Fair Value Measurement (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Schedule of fair value, assets measured on recurring basis

The following tables present our financial assets and liabilities that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy. The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value.

			Fair Value Measurements at March 31, 2018
			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	$	81,813	$	—	$	81,813	$	—
Liabilities:
Interest rate swap	$	463	$	—	$	463	$	—
Foreign currency forward exchange contracts accounted for using hedge accounting		140				140
Foreign currency forward exchange contracts not accounted for using hedge accounting		7		—		7		—
	$	610	$	—	$	610	$	—

			Fair Value Measurements at December 31, 2017
			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	$	69,899	$	—	$	69,899	$	—
Foreign currency forward exchange contracts accounted for using hedge accounting		26				26
Foreign currency forward exchange contracts not accounted for using hedge accounting		119		—		119		—
	$	70,044	$	—	$	70,044	$	—
Liabilities:
Interest rate swap	$	529	$	—	$	529	$	—