Investments - Available for Sale (Tables)

9 Months Ended

Sep. 30, 2016

Investments Debt And Equity Securities [Abstract]

Summary of Investments

Our investments as of September 30, 2016 and December 31, 2015 were as follows (in thousands):

	September 30, 2016
	Amortized Cost		Net Unrealized Gains (Losses)			Fair Value/Net Carrying Value		Cash and Cash Equivalents		Investments
Commercial paper	$	17,852	$	-		$	17,852	$	-	$	17,852
Corporate debt securities		17,935		1			17,936		-		17,936
Money market funds		28,382		-			28,382		28,382		-
Municipal bonds		2,513		(2	)		2,511		-		2,511
Total	$	66,682	$	(1	)	$	66,681	$	28,382	$	38,299
	December 31, 2015
	Amortized Cost		Net Unrealized Gains (Losses)			Fair Value/Net Carrying Value		Cash and Cash Equivalents		Investments
Commercial paper	$	28,845	$	-		$	28,845	$	999	$	27,846
Corporate debt securities		45,911		(81	)		45,830		-		45,830
Money market funds		4,071		-			4,071		4,071		-
Municipal bonds		1,433		-			1,433		-		1,433
Total	$	80,260	$	(81	)	$	80,179	$	5,070	$	75,109