Marketable Securities and Fair Value Disclosures (Tables)

9 Months Ended

Sep. 30, 2017

Marketable Securities And Fair Value Disclosures [Abstract]

Marketable securities consisted of the following as of September 30, 2017 and December 31, 2016 (in thousands):

	September 30, 2017
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
Short-term available-for-sale securities:
Corporate bonds	$	7,313	$	1	$	(4	)	$	7,310
Commercial Paper		499		—		—			499
Total	$	7,812	$	1	$	(4	)	$	7,809


	December 31, 2016
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
Short-term available-for-sale securities:
Corporate bonds	$	13,778	$	—	$	(16	)	$	13,762
Total	$	13,778	$	—	$	(16	)	$	13,762
Long-term available-for-sale securities:
Corporate bonds	$	2,355	$	3	$	(6	)	$	2,352
Total	$	2,355	$	3	$	(6	)	$	2,352

Summary of Amortized Cost and Estimated Fair Value of Available-for-Sale Securities by Contractual Maturity

As of September 30, 2017, the amortized cost and estimated fair value of available-for-sale securities by contractual maturity were as follows (in thousands):

	Amortized		Fair
	Cost		Value
Due in one year or less	$	7,812	$	7,809
Total	$	7,812	$	7,809

Summary of Assets Measured at Fair Value on Recurring Basis

The following table identifies the Company’s assets that were measured at fair value on a recurring basis (in thousands):


	Balance		Level 1		Level 2		Level 3
September 30, 2017
Money market	$	7,792	$	7,792	$	—	$	—
Corporate bonds		7,310		—		7,310		—
Commercial Paper		849		—		849		—
Total	$	15,951	$	7,792	$	8,159	$	—


December 31, 2016
Money market	$	7,672	$	7,672	$	—	$	—
Corporate bonds		16,114		—		16,114		—
Total	$	23,786	$	7,672	$	16,114	$	—