Equity (Tables)

3 Months Ended

Mar. 31, 2016

Stockholders' Equity [Abstract]

Key assumptions for fair value calculation, stock options

The fair value calculations are based on the following assumptions:

	Three Months Ended March 31, 2016	Three Months Ended March 31, 2015
Risk free interest rate	0.04% - 3.19%	0.04% - 3.73%
Expected term (years)	2.82 - 7.00	3.26 - 7.00
Expected volatility	112.75% - 198.90%	91.99% - 198.38%
Expected dividends	None	None

Allocation of stock-based compensation expense related to stock option grants

The following table summarizes the allocation of stock-based compensation expense for the three months ended March 31:

	2016	2015
Research and development	$19	$65
Sales and marketing	14	52
General and administrative	24	80
Director	8	16
Total stock-based compensation	$65	$213

Summary of option activity

A summary of option activity under the Company's plans for the three months ended March 31, 2016 and 2015 is as follows:

Options	2016				2015
	Shares	Weighted Average Exercise Price	Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value	Shares	Weighted Average Exercise Price	Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding at January 1	82	$45.35			57	$56.20
Granted	-	$-			28	$28.20
Forfeited or expired	(7)	$40.51			-	$-
Outstanding at March 31	75	$45.84	3.86		85	$46.90	4.87
Vested and expected to vest at March 31	72	$46.42	3.80	$-	83	$47.40	4.82	$-
Exercisable at March 31	59	$52.16	3.21		47	$57.70	3.67

Summary of the significant ranges of outstanding and exercisable options

The following table summarizes significant ranges of outstanding and exercisable options as of March 31, 2016:

Range of Exercise Prices	Options Outstanding			Options Exercisable
	Number Outstanding	Weighted Average Remaining Contractual Term (in years)	Weighted Average Exercise Price	Number Outstanding	Weighted Average Exercise Price
$25.00 - $625.00	75	3.86	$ 45.84	59	$ 52.16

Summary of the status of the Company's non-vested shares

A summary of the status of the Company's non-vested shares as of March 31, 2016 is as follows:

Non-vested Shares	Shares	Weighted Average Grant-Date Fair Value
Non-vested at January 1, 2016	25	$28.61
Forfeited	(4)	$28.80
Vested	(5)	$38.06
Non-vested at March 31, 2016	16	$26.47

Information with respect to the classes of Preferred Stock

Information with respect to the classes of Preferred Stock as of March 31, 2016 is as follows:

Class of Preferred Stock	Annual Dividend	Annual Dividend Payable, in Cash or In Kind	Liquidation Preference	Conversion Price	Total Preferred Shares Outstanding	Common Shares to be issued if Fully Converted
Series A-1	8%	Quarterly in Arrears	$1.00	$0.01555	966	50
Series B	10%	Quarterly in Arrears	$1.50	$0.01037	13,861	1,069
Series C	10%	Quarterly in Arrears	$1.50	$0.00777	5,628	579
Series D-1	10%	Quarterly in Arrears	$1.00	$0.00579	8,278	1,144
Series D-2	10%	Quarterly in Arrears	$1.00	$0.00686	6,539	763
		Total			35,272	3,605

Information with respect to dividends issued on the Company's preferred stock

Information with respect to dividends and Preferred Shares issued for the periods ended March 31 is as follows:

	Dividends		Beneficial Conversion Feature Related to Dividends		Preferred Shares		Beneficial Conversion Feature Related to Preferred Shares Issued
	March 31,		March 31,		March 31,		March 31,
	2016	2015	2016	2015	2016	2015	2016	2015
Series A-1	$19	$17	$3	$-	$-	$-	$-	$-
Series B	337	302	73	-	-	-	-	-
Series C	137	123	39	13	-	-	-	-
Series D-1	202	145	78	16	-	1,200	-	498
Series D-2	159	143	52	-	-	-	-	-
Total	$854	$730	$245	$29	-	$1,200	$-	$498

Summary of the warrants issued

Warrants

A summary of the warrant activity for the three months ended March 31 is as follows:

	2016		2015
	Warrants	Weighted Average Exercise Price	Warrants	Weighted Average Exercise Price
Outstanding at beginning of period	206	$28.70	171	$36.13
Issued	-	$-	22	$28.13
Expired/Canceled	-	$-	(9)	$-
Outstanding at end of period	206	$28.70	184	34.63
Exercisable at end of period	206	$28.70	184	$34.63

Status of the warrants outstanding

A summary of the status of the warrants outstanding and exercisable as of March 31, 2016 is as follows:

Number of Warrants	Weighted Average Remaining Life	Weighted Average Exercise Price per share
14	0.04	$2.56
105	0.40	$17.64
33	0.12	$4.42
54	0.54	$4.09
206	1.11	$28.70