Equity Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2015

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Summary of Option Activity under Company's Share-Based Compensation Plans

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

	Outstanding Options
	Number of			WeightedAverage
	Shares			Exercise Price
Balance as of January 1, 2015		1,978,273		$	7.10
Options granted		1,544,300			1.19
Options exercised		—			—
Options forfeited		—			—
Options cancelled		(1,196,172	)		5.04
Balance as of December 31, 2015		2,326,401			4.23

Information Regarding Stock Options Outstanding

Information regarding the stock options outstanding at December 31, 2015 is summarized as follows:

	Outstanding						Exercisable
			Remaining						Remaining
			Contractual		Aggregate				Contractual		Aggregate
	Number		Life		Intrinsic		Number		Life		Intrinsic
Exercise Price	of Shares		(In Years)		Value		of Shares		(In Years)		Value
$0.88 - $0.88		18,000		9.97	$	—		—		—	$	—
$1.08 - $1.08		1,017,706		9.48		—		112,902		8.91		—
$1.20 - $1.95		238,100		9.52		—		450		8.92		—
$1.97 - $3.50		239,247		6.23		—		172,729		5.55		—
$4.14 - $4.42		239,751		6.12		—		233,227		6.08		—
$4.48 - $4.68		290,341		7.34		—		132,142		6.22		—
$4.77 - $21.00		237,349		4.73		—		215,428		4.43		—
$23.70 - $90.10		43,293		2.45		—		43,293		2.45		—
$98.50 - $98.50		2,500		1.39				2,500		1.39
$117.00 - $117.00		114		1.01		—		114		1.01		—
		2,326,401		7.92	$	—		912,785		5.78	$	—

Summary of Unvested Share Units (Restricted Stock Units)

Information with respect to unvested share units (restricted stock units) as of December 31, 2015 is as follows:

				Weighted
	Number			Average
	of			Grant Date
	Shares			Fair Value
Outstanding at January 1, 2015		81,050		$	4.67
Granted		—			—
Released		(21,875	)		4.67
Forfeited		(22,225	)		4.67
Outstanding at December 31, 2015		36,950			4.67

2005 Plan and the Directors’ Plan [Member]

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Authorized Shares of Common Stock for Issuance

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

Year	Number of Shares
2013		2,319,812
2014		158,751
2015		175,000

2015 Plan and the 2015 Directors’ Plan [Member]

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Authorized Shares of Common Stock for Issuance

We authorized shares of common stock for issuance under the 2015 Plan and the 2015 Directors’ Plan as follows.

Year	Number of Shares
2015		1,250,000