Fair Value Measurement (Tables)

3 Months Ended

Mar. 31, 2020

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

			Fair Value Measurements at March 31, 2020
			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	$	61,539	$	—	$	61,539	$	—
Foreign currency forward exchange contracts accounted for using hedge accounting		131				131
Foreign currency forward exchange contracts not accounted for using hedge accounting		140		—		140		—
	$	61,810	$	—	$	61,810	$	—
Liabilities:
Interest rate swap	$	8	$	—	$	8	$	—

			Fair Value Measurements at December 31, 2019
			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	$	60,714	$	—	$	60,714	$	—
Foreign currency forward exchange contracts accounted for using hedge accounting		16				16
Foreign currency forward exchange contracts not accounted for using hedge accounting		112		—		112		—
	$	60,842	$	—	$	60,842	$	—
Liabilities:
Interest rate swap	$	30	$	—	$	30	$	—