Convertible Note, Series D Preferred Stock, And Series D-1 Preferred Stock - Notes and Series D Preferred Stock (Details)												1 Months Ended	12 Months Ended
	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 21, 2015 USD ($)	Nov. 22, 2015 USD ($)	Nov. 04, 2015	Oct. 08, 2015 USD ($)	Sep. 04, 2015 USD ($) installment	Feb. 25, 2015	Feb. 19, 2015 USD ($) shares	Dec. 22, 2014 USD ($)	Nov. 19, 2014 USD ($)	Nov. 14, 2014 USD ($) d $ / shares shares	Feb. 28, 2015 shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) $ / shares	Sep. 28, 2015 USD ($)	Jul. 22, 2015 shares	Aug. 26, 2014 $ / shares
Debt Instrument [Line Items]
Common stock, par value (in dollars per share) | $ / shares	$ 0.0001												$ 0.0001	$ 0.0001			$ 0.0001
Changes in restricted cash													$ 9,250,000
Notes outstanding	$ 30,036												$ 30,036	$ 364,093
Common Stock [Member] | Warrants and Rights Subject to Mandatory Redemption [Member]
Debt Instrument [Line Items]
Issuance of common stock (in shares) | shares													8,300,000
Series D-1 Preferred Stock [Member]
Debt Instrument [Line Items]
Preferred stock, shares outstanding (in shares) | shares	0												0
Series D Preferred Stock [Member]
Debt Instrument [Line Items]
Preferred stock, shares outstanding (in shares) | shares	0												0
Debt instrument, unamortized discount	$ 0												$ 0	1,194,222
Convertible Debt [Member]
Debt Instrument [Line Items]
Debt instrument, face amount						$ 1,500,000									$ 500,000
Convertible Debt [Member] | Embedded Derivative Financial Instruments [Member]
Debt Instrument [Line Items]
Loss on extinguishment of debt and embedded derivative													11,600,000
Private Placement [Member]
Debt Instrument [Line Items]
Proceeds from issuance of stock													2,000,000	$ 11,959,945
Securities purchase agreement, consideration received, cash										$ 4,500,000
Securities purchase agreement, amount held in restricted control accounts										$ 30,500,000
Securities purchase agreement, consideration received, cash received from restricted control accounts									$ 2,500,000
Securities purchase agreement, covenant term, maximum payout per 90 days											$ 6,000,000
Conversion price | $ / shares											$ 2.25
Redemption price, percentage											120.00%
Debt instrument, convertible, amortization acceleration election maximum threshold ratio											5
Amortization payment, deferred election, amount													4,015,849
Amortization payment, deferred election, amount interest expense added to the principal balance													352,204
Private Placement [Member] | Convertible Preferred Stock Subject to Mandatory Redemption [Member]
Debt Instrument [Line Items]
Preferred dividends, cash													$ 3,572
Private Placement [Member] | Convertible Notes And Series D Preferred Stock, Alternate Conversion [Member]
Debt Instrument [Line Items]
Debt instrument, convertible, conversion ratio											0.85
Debt instrument, convertible, threshold lowest trading days | d											3
Debt instrument, convertible, threshold consecutive trading days											10 days
Debt instrument, convertible, numerator for calculation of conversion price											3
Private Placement [Member] | Convertible Notes And Series D Preferred Stock, Installment Conversion [Member]
Debt Instrument [Line Items]
Debt instrument, convertible, conversion ratio											0.85
Debt instrument, convertible, threshold lowest trading days | d											5
Debt instrument, convertible, threshold consecutive trading days											20 days
Debt instrument, convertible, numerator for calculation of conversion price											5
Private Placement [Member] | Convertible Notes And Series D Preferred Stock, Default [Member]
Debt Instrument [Line Items]
Debt instrument, convertible, redemption threshold, percent											125.00%
Private Placement [Member] | Warrants and Rights Subject to Mandatory Redemption [Member]
Debt Instrument [Line Items]
Number of securities called by warrants | shares											7,777,778	541,126				8,300,000
Private Placement [Member] | Warrants and Rights Subject to Mandatory Redemption [Member] | Convertible Preferred Stock Subject to Mandatory Redemption [Member]
Debt Instrument [Line Items]
Fair value assumptions, expected term							5 years 6 months
Private Placement [Member] | Common Stock [Member]
Debt Instrument [Line Items]
Common stock, par value (in dollars per share) | $ / shares	$ 0.0001												$ 0.0001
Conversion of stock, shares issued | shares													8,318,690
Interest Expense paid with Common stock (in shares) | shares													3,420,461
Fair value assumptions, weighted average volatility rate														64.00%
Fair value assumptions, expected dividend rate														0.00%
Fair value assumptions, expected term														5 years 5 months
Private Placement [Member] | Series D-1 Preferred Stock [Member]
Debt Instrument [Line Items]
Issuance of common stock (in shares) | shares								2,500				2,500
Shares converted | shares													2,500
Conversion of stock, amount converted													$ 2,500,000
Preferred stock, dividend rate								7.00%
Percentage on occurrence of events								15.00%
Preferred dividends, cash													$ 6,944
Stock dividends | shares													3,896
Private Placement [Member] | Series D-1 Preferred Stock [Member] | Convertible Notes And Series D Preferred Stock, Alternate Conversion [Member]
Debt Instrument [Line Items]
Issuance of common stock (in shares) | shares													2,305,824
Private Placement [Member] | Series D-1 Preferred Stock [Member] | Convertible Preferred Stock Subject to Mandatory Redemption [Member] | Embedded Derivative Financial Instruments [Member]
Debt Instrument [Line Items]
Make-whole dividend liability	$ 0							$ 3,400,000					$ 0
Change in fair value of derivatives and gain (loss) on extinguishment of liabilities, net													$ 2,700,000
Fair value assumptions, weighted average volatility rate													45.00%
Fair value assumptions, present value discount rate													12.00%
Fair value assumptions, expected dividend rate													0.00%
Fair value assumptions, expected term													2 months 12 days
Private Placement [Member] | Series D Preferred Stock [Member]
Debt Instrument [Line Items]
Proceeds from issuance of stock											$ 3,000,000
Issuance of common stock (in shares) | shares											3,000
Stock dividends | shares													11,241
Private Placement [Member] | Series D Preferred Stock [Member] | Convertible Preferred Stock Subject to Mandatory Redemption [Member]
Debt Instrument [Line Items]
Issuance of common stock (in shares) | shares													1,465,972
Debt instrument, convertible, trading days prior to the installment date for amortization payments | d											20
Preferred stock liquidation value, installment payments													$ 565,341
Private Placement [Member] | Series D Preferred Stock [Member] | Convertible Preferred Stock Subject to Mandatory Redemption [Member] | Embedded Derivative Financial Instruments [Member]
Debt Instrument [Line Items]
Make-whole dividend liability	0												0	$ 400,000
Change in fair value of derivatives and gain (loss) on extinguishment of liabilities, net													$ 400,000
Private Placement [Member] | Convertible Preferred Stock Subject to Mandatory Redemption [Member]
Debt Instrument [Line Items]
Proceeds from issuance of stock											$ 3,000,000
Issuance of common stock (in shares) | shares											3,000
Shares converted | shares													2,305
Conversion of stock, amount converted													$ 2,305,000
Preferred stock, dividend rate											7.00%
Percentage on occurrence of events											15.00%
Private Placement [Member] | Convertible Preferred Stock Subject to Mandatory Redemption [Member] | Embedded Derivative Financial Instruments [Member]
Debt Instrument [Line Items]
Fair value assumptions, weighted average volatility rate													50.00%
Fair value assumptions, present value discount rate													12.00%
Fair value assumptions, expected dividend rate													0.00%
Fair value assumptions, expected term													3 years 5 months
Private Placement [Member] | Convertible Debt [Member]
Debt Instrument [Line Items]
Issuance of common stock (in shares) | shares													21,424,686
Proceeds from issuance of convertible debt											$ 32,000,000
Debt instrument term											42 months
Installment payments for Notes		$ 1,000,000											$ 3,703,293
Amortization payment, accelerated election, amount													5,145,375
Stated interest rate											7.00%
Debt instrument, interest rate upon occurrence of events											15.00%
Interest expense													$ 984,632
Debt instrument, face amount						21,200,000
Repurchased debt amount						25,100,000
Debt instrument, unamortized discount						100,000
Loss on embedded derivative						18,800,000
Investor payable, gross						$ 6,300,000
Number of payments | installment						2
Investor payable due in first installment						$ 2,400,000
Investor payable due in second installment					$ 2,800,000	$ 3,900,000
Investor payable, amount reinstated					3,500,000
Private Placement [Member] | Convertible Debt [Member] | Embedded Derivative Financial Instruments [Member]
Debt Instrument [Line Items]
Make-whole dividend liability														$ 17,400,000
Fair value assumptions, weighted average volatility rate														50.00%
Fair value assumptions, present value discount rate														12.00%
Fair value assumptions, expected dividend rate														0.00%
Fair value assumptions, expected term														3 years 5 months
Private Placement [Member] | Convertible Debt [Member] | Convertible Notes And Series D Preferred Stock, Installment Conversion [Member]
Debt Instrument [Line Items]
Issuance of common stock (in shares) | shares													12,651,059
Private Placement [Member] | Convertible Debt [Member] | Convertible Notes And Series D Preferred Stock, Default [Member]
Debt Instrument [Line Items]
Debt instrument, convertible, conversion ratio											0.85
Debt instrument, convertible, threshold lowest trading days | d											3
Debt instrument, convertible, threshold consecutive trading days											10 days
Debt instrument, convertible, numerator for calculation of conversion price											3
Private Placement [Member] | Convertible Debt [Member] | Reinstated Notes [Member]
Debt Instrument [Line Items]
Issuance of common stock (in shares) | shares													6,959,180
Conversion of stock, amount converted													$ 1,634,992
Conversion of stock, shares issued | shares													16,981,640
Installment payments for Notes													$ 853,659
Amortization payment, accelerated election, amount													1,001,000
Interest expense													$ 35,217
Interest Expense paid with Common stock (in shares) | shares													314,888
Make-whole dividend liability	$ 61,000				$ 4,808,800								$ 61,000
Change in fair value of derivatives and gain (loss) on extinguishment of liabilities, net													4,747,800
Fair value assumptions, weighted average volatility rate	34.00%				37.00%
Fair value assumptions, present value discount rate	12.00%				12.00%
Fair value assumptions, expected dividend rate	0.00%				0.00%
Fair value assumptions, expected term	2 years 4 months 21 days				2 years 7 months 10 days
Loss on extinguishment of debt and embedded derivative													$ 27,100
Accelerated election, shares issued | shares													10,536,971
Percent of average of two lowest volume weighted average prices				80.00%
Measurement period after conversion date				10 years
Notes outstanding	$ 52,500												$ 52,500
Private Placement [Member] | Convertible Debt [Member] | November 2015 Reinstated Notes [Member]
Debt Instrument [Line Items]
Conversion of stock, amount converted													$ 1,800,000
Conversion of stock, shares issued | shares													18,644,996
Installment payments for Notes		$ 1,800,000
Interest expense													$ 3,003
Interest Expense paid with Common stock (in shares) | shares													30,890
Make-whole dividend liability	0		$ 2,200,000										$ 0
Fair value assumptions, weighted average volatility rate			55.00%
Fair value assumptions, present value discount rate			12.00%
Fair value assumptions, expected dividend rate			0.00%
Fair value assumptions, expected term			2 years 5 months 27 days
Debt instrument, unamortized discount			$ 2,200,000
Loss on extinguishment of debt and embedded derivative													(2,200,000)
Notes outstanding	$ 0												0
Private Placement [Member] | Convertible Debt [Member] | Reinstated Notes, Amendment Two [Member]
Debt Instrument [Line Items]
Loss on extinguishment of debt and embedded derivative													$ 15,700
Private Placement [Member] | Convertible Debt [Member] | Warrants and Rights Subject to Mandatory Redemption [Member]
Debt Instrument [Line Items]
Fair value assumptions, weighted average volatility rate							69.00%
Fair value assumptions, expected dividend rate							0.00%