Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2016

Equity [Abstract]

Summary of Outstanding Warrants Issued By Company

Below is the summary of outstanding warrants issued by the Company as of September 30, 2016:

Warrant Type	Number of Shares Issuable Upon Exercise		Weighted Average Exercise Price		Issue Date	Expiration Date
Consultant Warrant		85,000	$	10.70	August 13, 2014	August 13, 2019
Opus Warrant		200,000		2.19	March 31, 2014	March 31, 2019
New Opus Warrant		100,000		2.22	September 30, 2016	September 30, 2021
2013 Private Placement Warrants		186,878		10.00	August 14, 2013	August 14, 2017
Total		571,878

Summary of Activity under Stock-Based Compensation Plans

A summary of activity for the Company’s stock option plans for the nine months ended September 30, 2016 follows:

	Number Outstanding			Average Exercise Price per Share		Weighted Average Remaining Contractual Term (Years)		Average Intrinsic Value
Balance at December 31, 2015		781,804		$	11.48			$	—
Granted		444,460			4.36
Cancelled or Expired		(299,929	)		12.81
Exercised		—			—
Balance at September 30, 2016		926,335		$	7.40		8.15	$	—
Vested or expected to vest at    September 30, 2016		887,433		$	7.49		8.10	$	—
Exercisable at September 30, 2016		458,897		$	9.12		7.21	$	—

Summary Information about Options Outstanding

The following table summarizes information about options outstanding as of September 30, 2016:

	Options Outstanding						Options Exercisable
Range of Exercise Prices	Number Outstanding		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$4.36 - $7.20		540,363		9.15	$	4.58		183,894	$	4.90
$7.50 - $11.30		320,768		7.07		9.59		210,142		9.44
$12.00 - $19.70		40,009		6.46		13.56		39,666		13.55
$21.70 - $33.90		17,411		4.19		25.14		17,411		25.14
$34.40 - $43.40		7,784		0.40		41.33		7,784		41.33
$4.36 - $43.40		926,335		8.15	$	7.40		458,897	$	9.12

Summary of Restricted Stock and Restricted Stock Unit Activity

The following is a summary of restricted stock and restricted stock unit (“RSU”) activity for the nine months ended September 30, 2016:

	Number Outstanding			WeightedAverage Fair Value		Average Intrinsic Value
Balance at December 31, 2015		721,918		$	13.32	$	—
Granted		1,756,732			2.06
Vested		(603,869	)		7.29
Forfeited		(243,515	)		15.14
Balance at September 30, 2016		1,631,266		$	2.97	$	-

Stock-Based Compensation Expense Related To Stock Options and RSUs

The following table illustrates all employee stock-based compensation expense related to stock options and RSUs included in the condensed consolidated statements of operations for the three and nine months ended September 30, 2016 and 2015 (in thousands):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2016		2015		2016		2015
Cost of revenue	$	26	$	34	$	72	$	98
Research and development		69		73		205		212
Selling and marketing		148		363		433		911
General and administrative		620		659		1,535		2,316
Total	$	863	$	1,129	$	2,245	$	3,537

Summary of Common Stock Reserved For Future Issuance

Common stock reserved for future issuance as of September 30, 2016 was as follows:

Exercise of outstanding stock options and vesting of RSUs	2,557,601
ESPP	293,888
Shares of common stock available for grant under the 2011 Plan	697,984
Noncontrolling interest in Bluehill AG	10,355
Warrants to purchase common stock	571,878
Total	4,131,706