Cash, Cash Equivalents and Investments (Tables)

12 Months Ended

Dec. 31, 2013

Cash And Cash Equivalents [Abstract]

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

The following is a summary of cash, cash equivalents and held-to-maturity investments by type at December 31 (in thousands):

	December 31, 2013									December 31, 2012
			Gross		Gross							Gross		Gross
	Amortized		Unrealized		Unrealized			Fair		Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value		Cost		Gains		Losses			Value
Cash and money market funds	$	42,226	$	—	$	—		$	42,226	$	36,127	$	—	$	—		$	36,127
State and municipal obligations		10,807		14		—			10,821		—		—		—			—
Corporate bonds		7,743		2		(14	)		7,731		1		—		—			1
Certificate of deposit		2,619		—		—			2,619		1,680		—		(1	)		1,679
Total cash, cash equivalents and investments	$	63,395	$	16	$	(14	)	$	63,397	$	37,808	$	—	$	(1	)	$	37,807

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 December 31, 2013 by contractual maturity (in thousands):

	Amortized Cost		Fair Value
Due in less than one year	$	9,101	$	9,103
Due after one year, through two years		12,023		12,022
Total short-term and long-term investments	$	21,124	$	21,125

Schedule of Company's Investments Measured at Fair Value

The following table presents information about the Company’s investments that are measured at fair value as of December 31, 2013, and indicates the fair value hierarchy of the valuation (in thousands):

	Amortized Cost		Quoted Prices in Active Markets for Identical Assets (Level 1)		Siginificant Other Observable Inputs (Level 2)		Significant Unbservable Inputs (Level 3)		Total Fair Value
Cash	$	37,196	$	37,196	$	—	$	—	$	37,196
Money market funds		5,030		5,030		—		—		5,030
Certificates of deposit		2,619		—		2,619		—		2,619
Corporate bonds		7,743		7,732		—		—		7,732
State and municipal obligations		10,807		—		10,820		—		10,820
Total cash, cash equivalents and investments	$	63,395	$	49,958	$	13,439	$	—	$	63,397