Cash, Cash Equivalents, and Investments (Tables)

9 Months Ended

Sep. 30, 2014

Cash and Cash Equivalents [Abstract]

Summary of Cash, Cash Equivalents and Held-to-Maturity Investments by Type

The following tables summarizes the Company’s cash, cash equivalents and held-to-maturity investments at September 30, 2014 and December 31, 2013 (in thousands):

	As of September 30, 2014
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash and Cash Equivalents		Short-Term Investments		Long-Term Investments
Cash	$	36,392	$	—	$	—		$	36,392	$	36,392	$	—	$	—
Level 1:
Money market funds		2,223		—		—			2,223		2,223		—		—
Corporate bonds		15,455		3		(20	)		15,438		—		12,811		2,644
Subtotal		17,678		3		(20	)		17,661		2,223		12,811		2,644
Level 2:
State and municipal obligations		17,466		21		—			17,487		—		14,689		2,777
Certificates of deposit		2,473		—		—			2,473		—		1,483		990
Subtotal		19,939		21		—			19,960		—		16,172		3,767
Total	$	74,009	$	24	$	(20	)	$	74,013	$	38,615	$	28,983	$	6,411
	As of December 31, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash and Cash Equivalents		Short-Term Investments		Long-Term Investments
Cash	$	37,196	$	—	$	—		$	37,196	$	37,196	$	—	$	—
Level 1:
Money market funds		5,030		—		—			5,030		5,030		—		—
Corporate bonds		7,743		3		(14	)		7,732		—		1,102		6,641
Subtotal		12,773		3		(14	)		12,762		5,030		1,102		6,641
Level 2:
State and municipal obligations		10,807		14		—			10,821		45		5,626		5,136
Certificates of deposit		2,619		—		—			2,619		—		2,373		246
Subtotal		13,426		14		—			13,440		45		7,999		5,382
Total	$	63,395	$	17	$	(14	)	$	63,398	$	42,271	$	9,101	$	12,023

Summary of Amortized Cost and Fair Value of Short-term and Long-term Investments

The following table summarizes the amortized cost and fair value of the short-term and long-term investments held by the Company at September 30, 2014 by contractual maturity (in thousands):

	Amortized Cost		Fair Value
Due in less than one year	$	28,983	$	28,989
Due after one year, through two years		6,163		6,167
Due after two years		248		242
Total short-term and long-term investments	$	35,394	$	35,398