Stockholders' Equity and Redeemable Convertible Preferred Stock (Tables)

6 Months Ended

Jun. 30, 2015

Stockholders Equity Tables

Preferred Stock

The Company had designated separate series of its capital stock as of June 30, 2015 and December 31, 2014 as summarized below:

	Number of Shares Issued
	and Outstanding as of
	June 30, 2015		December 31,  2014		Par Value		Conversion Ratio
Series “A”		—		—	$	0.0001	N/A
Series “C”		1		1		0.0001	1:1
Series “D”		4,725		4,725		0.0001	10:1
Series “D-1”		834		834		0.0001	10:1
Series “F-1”		—		—		0.0001	1:1
Series “H”		439,043		439,043		0.0001	10:1
Series “I”		29,940		35,541		0.0001	20:1
Series “J”		—		—		0.0001	1:1

Summary of warrant activity

A summary of warrant activity for the six months ended June 30, 2015 is presented below: 

			Weighted Average			Total Intrinsic		Weighted Average  Remaining Contractual
	Warrants		Exercise Price			Value		Life (in years)
Outstanding as of December 31, 2014		769,803		$	13.70	$	—		4.03
Issued		—			—		—		—
Outstanding as of June 30, 2015		769,803		$	13.70	$	—		3.54

Summary of option activity

A summary of option activity under the Company’s employee stock option plan for the six months ended June 30, 2015 is presented below:

								Weighted Average
				Weighted Average		Total Intrinsic		Remaining Contractual
	Number of Shares			Exercise Price		Value		Life (in years)
Outstanding as of December 31, 2014		5,243,877		$	4.97	$	—		6.0
Employee options forfeited		(250,000	)		—		—		—
Employee options expired		(176	)		—		—		—
Outstanding as of June 30, 2015		4,993,701			5.07	$	—		5.6
Options vested and expected to vest		4,993,701			5.07		—		5.6
Options vested and exercisable		4,993,576		$	5.06	$	—		5.6

A summary of option activity under the Company’s non-employee stock option plan for the six months ended June 30, 2015 is presented below: 

								Weighted Average
			Weighted Average			Total Intrinsic		Remaining Contractual
	Number of Shares		Exercise Price			Value		Life (in years)
Outstanding as of December 31, 2014		55,000		$	5.16	$	—		6.4
Non-employee options granted		—			—		—		—
Outstanding as of June 30, 2015		55,000			5.16		—		5.9
Options vested and expected to vest		55,000			5.16		—		5.9
Options vested and exercisable		55,000		$	5.16	$	—		5.9

Summary of the restricted stock award activity

A summary of the restricted stock award activity for the six months ended June 30, 2015 is as follows:

				Weighted Average
				Grant Day Fair
	Number of Units			Value
Nonvested at December 31, 2014		7,500		$	2.63
Granted		60,625			0.61
Vested		(23,125	)		1.23
Nonvested at June 30, 2015		45,000		$	—

Stock-based compensation expense

Stock-based compensation for the three months and six months ended June 30, 2015 and 2014 was comprised of the following (in thousands):

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2015		2014		2015		2014
Employee restricted stock awards	$	—	$	12	$	11	$	14
Employee stock option awards		14		6,757		90		10,150
Non-employee restricted stock awards		33		175		33		176
Non-employee option awards		—		48		—		48
Total compensation expense	$	47	$	6,992	$	134	$	10,388