Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2016

Fair Value Disclosures [Abstract]

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

The fair value hierarchy of the Company’s assets and liabilities carried at fair value and measured on a recurring basis was as follows (in thousands):

			Fair value measurements at the reporting date using
	September 30, 2016		Quoted prices in active markets using identical assets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)
Cash equivalents:
U.S. government securities	$	4,306	$	—	$	4,306	$	—
Money market and other funds	5,432		—		5,432		—
Commercial paper	2,500		—		2,500		—
Time deposits	659		—		659		—
Total cash equivalents	12,897		—		12,897		—
Available-for-sale investments:
Debt securities:
U.S. government securities	1,998		—		1,998		—
Commercial paper	1,995		—		1,995		—
Time deposits	499		—		499		—
Total debt securities	4,492		—		4,492		—
Total assets at fair value	$	17,389	$	—	$	17,389	$	—
Acquisition-related contingent consideration liability	$	3,500	$	—	$	—	$	3,500
Total liabilities at fair value	$	3,500	$	—	$	—	$	3,500

			Fair value measurements at the reporting date using
	December 31, 2015		Quoted prices in active markets using identical assets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)
Cash equivalents:
Money market and other funds	$	5,410	$	—	$	5,410	$	—
Available-for-sale investments:
Debt securities:
U.S. government securities	11,301		—		11,301		—
Total assets at fair value	$	16,711	$	—	$	16,711	$	—
Acquisition-related contingent consideration liability	$	2,951	$	—	$	—	$	2,951
Total liabilities at fair value	$	2,951	$	—	$	—	$	2,951

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation

A reconciliation of Level 3 items measured at fair value on a recurring basis is as follows (in thousands):

Acquisition-related contingent consideration liability:
Balance at December 31, 2015	$	2,951
Revaluation	391
Foreign currency transaction loss	158
Balance at September 30, 2016	$	3,500

Investments Classified as Available-for-Sale

The cost and fair value of available-for-sale investments were as follows (in thousands):

	Amortized cost		Gross unrealized gains		Gross unrealized losses			Fair value
Balance at September 30, 2016	$	4,491	$	2	$	(1	)	$	4,492
Balance at December 31, 2015	$	11,316	$	—	$	(15	)	$	11,301