Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value, Assets Measured on Recurring Basis

Assets and liabilities measured at fair value on a recurring basis were as follows (in thousands):

	December 31, 2018
	Level 1		Level 2		Level 3		Total
Assets:
Cash Equivalents
Money market funds	$	7,646	$	—	$	—	$	7,646
	7,646		—		—		7,646
Available-for-Sale Securities
Certificates of deposit(1)	—		10,379		—		10,379
Corporate bonds	—		7,522		—		7,522
U.S. government bonds	—		7,491		—		7,491
	—		25,392		—		25,392
Derivatives
Interest rate swap contract	—		363		—		363
Foreign currency forward contracts	—		240		—		240
	—		603		—		603
Total assets at fair value	$	7,646	$	25,995	$	—	$	33,641

	December 31, 2017
	Level 1		Level 2		Level 3		Total
Assets:
Cash Equivalents
Money market funds	$	10,946	$	—	$	—	$	10,946
Commercial paper	—		1,996		—		1,996
Total cash equivalents	10,946		1,996		—		12,942
Available-for-Sale Securities
Certificates of deposit(1)	—		19,875		—		19,875
Corporate bonds	—		29,239		—		29,239
U.S. government bonds	—		8,189		—		8,189
Total available-for-sale securities	—		57,303		—		57,303
Derivatives
Interest rate swap contract	—		372		—		372
Foreign currency forward contracts	—		390		—		390
	—		762		—		762
Total assets at fair value	$	10,946	$	60,061	$	—	$	71,007

⁽¹⁾ All certificates of deposit are within current FDIC insurance limits.