Cash, Cash Equivalents and Investments (Tables)

12 Months Ended

Dec. 31, 2013

Cash And Cash Equivalents [Abstract]

Cash and Cash Equivalents

Cash and cash equivalents consisted of the following:

	As of December 31,
	2013		2012
Cash	$	13,805	$	15,064
Money market funds		1,607		33,345
Total cash and cash equivalents	$	15,412	$	48,409

Short and Long-term Investments

Short and long-term investments consisted of the following:

	December 31, 2013
	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Short and long-term investments:
Government agency bonds	$	2,511	$	4	$	—		$	2,515
Municipal bonds		15,833		13		(1	)		15,845
Total short and long-term investments	$	18,344	$	17	$	(1	)	$	18,360
	December 31, 2012
	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Short and long-term investments:
Government agency bonds	$	11,535	$	20	$	—		$	11,555
Municipal bonds		16,373		10		(7	)		16,376
Total short and long-term investments	$	27,908	$	30	$	(7	)	$	27,931