Equity Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2013

The following table sets forth the summary of option activity under our share-based compensation plans:


	Outstanding Options
	Number of Shares			Weighted Average Exercise Price
Balance as of January 1, 2013		1,038,245		$	12.24
Options granted		1,369,030			4.49
Options exercised		(10,317	)		3.48
Options cancelled		(275,454	)		10.31

Balance as of December 31, 2013		2,121,504		$	7.53

Information regarding the stock options outstanding at December 31, 2013 is summarized as follows:


	Outstanding						Exercisable
Exercise Price	Number of Shares		Remaining Contractual Life (In Years)		Aggregate Intrinsic Value		Number of Shares		Remaining Contractual Life (In Years)		Aggregate Intrinsic Value
$3.32 — $3.50		384,882		8.53	$	485,000		132,783		8.48	$	167,000
$4.08 — $4.41		154,100		9.36		59,000		—		—		—
$4.42 — $4.42		788,500		9.24		244,000		—		—		—
$4.44 — $12.30		402,350		7.95		21,000		95,744		3.31		1,000
$12.70 — $117.00		391,672		6.82		—		378,728		6.80		—

		2,121,504		8.43	$	809,000		607,255		6.62	$	168,000

Information with respect to unvested share units (restricted stock units) as of December 31, 2013 is as follows:


	Number of Shares			Weighted Average Grant Date Fair Value
Outstanding at January 1, 2013		—		$	—
Granted		590,495			4.67
Released		(17,795	)		4.20
Canceled		(51,650	)		4.68

Outstanding at December 31, 2013		521,050		$	4.68

We authorized shares of common stock for issuance under the 2005 Plan and the Directors’ Plan as follows.