Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Assets measured at fair value on a recurring basis

Assets and liabilities measured at fair value on a recurring basis as of September 30, 2018 and December 31, 2017 were as follows (in thousands):

	September 30, 2018
	Level 1		Level 2			Level 3		Total
Assets:
Cash Equivalents
Money market funds	$	8,464	$	—		$	—	$	8,464
Commercial paper	—		4,986			—		4,986
Total cash equivalents	8,464		4,986			—		13,450
Available-for-Sale Securities
Certificates of deposit(1)	—		18,474			—		18,474
Corporate bonds	—		10,050			—		10,050
U.S. government bonds	—		11,828			—		11,828
Total available-for-sale securities	—		40,352			—		40,352
Derivatives
Interest rate swap contract	—		537			—		537
Total derivatives	—		537			—		537
Total assets measured at fair value	$	8,464	$	45,875		$	—	$	54,339
Liabilities:
Derivatives
Foreign currency forward contracts	$	—	$	(224	)	$	—	$	(224	)
Total liabilities measured at fair value	$	—	$	(224	)	$	—	$	(224	)

	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
Total derivatives	—		762		—		762
Total assets measured at fair value	$	10,946	$	60,061	$	—	$	71,007

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