Balance Sheet Details (Tables)

12 Months Ended

Dec. 31, 2013

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Available-for-Sale Securities Recorded at Fair Value with Unrealized Gains or Losses

Available-for-sale securities with contractual maturities of less than 12 months were as follows (in thousands):

	December 31, 2013							December 31, 2012
		Amortized cost basis		Gross unrealized loss			Fair value		Amortized cost basis		Gross unrealized loss			Fair value
Corporate notes, bonds and paper	$	919	$	(1	)	$	918	$	9,091	$	(7	)	$	9,084
Government securities/money market		2,160		-			2,160		4,245		(1	)		4,244
Total	$	3,079	$	(1	)	$	3,078	$	13,336	$	(8	)	$	13,328

Summary of Equipment and Improvements

Equipment and improvements consist of the following (in thousands):

	December 31,
	2013			2012
Computer hardware, software, and equipment	$	16,529		$	16,122
Leasehold improvements		5,317			6,368
Office furniture and fixtures		1,213			1,611
		23,059			24,101
Less accumulated depreciation and amortization		(16,036	)		(12,890	)
Equipment and improvements, net	$	7,023		$	11,211

Summary of Accrued Liabilities

Accrued liabilities consist of the following (in thousands):

	December 31,
	2013		2012
Salaries and benefits	$	3,651	$	4,061
Restructuring		1,978		8
Pennsylvania grant liability		1,000		-
Royalties and revenue sharing		803		544
Income taxes		176		167
Marketing expenses, rebates and other		126		49
Total accrued liabilities	$	7,734	$	4,829

Deferred Rent and Other Long Term Liabilities

Deferred rent and other long term liabilities consist of the following (in thousands):

	December 31,
	2013		2012
Deferred rent	$	1,986	$	2,378
Restructuring - beyond one year		1,394		-
Pennsylvania grant liability		-		1,000
Deferred revenue - long term		3		21
Total deferred rent and other long term liabilities	$	3,383	$	3,399