Additional issuance of Common stock purchase price per share.

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Amortization payments number of equal installments.

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Conversion price of debt instrument to purchase price of common stock percentage.

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Debt conversion converted instrument put options issued on default and change in control, value.

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Debt instrument, deferred, description.

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Debt instrument principal amount cancelled.

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Number of notes investors entered into agreement.

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Period after original date of issuance of debt instrument for which amortization payment begins.

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Proceeds from issuance of notes and warrants.

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Proceeds from issuance of notes available for use.

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Rate of interest in event of default.

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Restricted cash released.

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Expiration date of warrants, beginning on the date of issuance.

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Number of warrants issued during the period to purchase common shares.

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Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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Exercise price per share or per unit of warrants or rights outstanding.

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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount of a favorable spread to a debt holder between the amount of debt being converted and the value of the securities received upon conversion. This is an embedded conversion feature of convertible debt issued that is in-the-money at the commitment date.

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The price per share of the conversion feature embedded in the debt instrument.

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Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

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Date the debt instrument was issued, in CCYY-MM-DD format.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities.

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Description of debt redemption features under terms of the debt agreement.

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Fair value amount of debt instrument that was repurchased.

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Face (par) amount of the original debt instrument that was repurchased.

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Amount, after accumulated amortization, of debt discount.

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Amount, before accumulated amortization, of debt issuance costs classified as current. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of expense (income) related to adjustment to fair value of warrant liability.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The cash outflow to reacquire preferred stock during the period.

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The cash outflow for reacquisition of callable preferred stock.

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The aggregate amount paid by the entity to reacquire the right to purchase equity shares at a predetermined price, usually issued together with corporate debt.

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The price per share at which the preferred stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity is redeemed or may be called at. The redemption features of this preferred stock are solely within the control of the issuer.

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Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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Number of shares issued which are neither cancelled nor held in the treasury.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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Convertible Notes Payable - Additional Information (Details)																					1 Months Ended	3 Months Ended			8 Months Ended	9 Months Ended
	Nov. 06, 2017	Oct. 11, 2017 USD ($) d $ / shares	Oct. 10, 2017 USD ($) Investor $ / shares shares	Sep. 21, 2017 USD ($) $ / shares	Sep. 15, 2017 USD ($) $ / shares shares	Aug. 28, 2017 USD ($) $ / shares shares	Aug. 04, 2017 USD ($) $ / shares	Jul. 07, 2017 USD ($) $ / shares	Jul. 02, 2017 USD ($) $ / shares	May 09, 2017 USD ($) $ / shares	Apr. 10, 2017 USD ($) $ / shares	Apr. 02, 2017 USD ($)	Mar. 13, 2017 USD ($) $ / shares	Mar. 02, 2017 USD ($) $ / shares	Feb. 10, 2017 USD ($) $ / shares	Feb. 01, 2017 USD ($) $ / shares	Jan. 12, 2017 USD ($) $ / shares	Jul. 21, 2016	Jun. 13, 2016	Jun. 06, 2016 USD ($) Installment $ / shares shares	Dec. 31, 2016 USD ($)	Sep. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Sep. 30, 2016 USD ($)	Aug. 28, 2017 USD ($) $ / shares shares	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)
Debt Instrument [Line Items]
Gain on warrant extinguishment																						$ 0		$ 0		$ 9,613,000	$ 0
Warrant liability fair value adjustment																						(27,000)		$ (8,680,000)		(1,227,000)	(9,171,000)
Debt instrument, conversion price \| $ / shares							$ 24.50	$ 17.50		$ 17.50	$ 21.00		$ 38.50	$ 49.00	$ 70.00	$ 112.00	$ 126.00
Reverse stock split ratio																		0.0625
Conversion of convertible notes							$ 1,015,848	$ 2,000,000		$ 1,913,915	$ 3,621,286		$ 4,417,830	$ 126,000	$ 3,045,817	$ 544,000	$ 1,478,318								$ 23,563,014	26,199,000	0
Subsequent Event [Member]
Debt Instrument [Line Items]
Reverse stock split ratio	0.0029
Restructuring Agreement [Member]
Debt Instrument [Line Items]
Conversion of convertible notes						$ 1,200,000
Restructuring Agreement [Member] \| Investor [Member]
Debt Instrument [Line Items]
Initial release of restricted cash						1,650,000
Restructuring Agreement [Member] \| Investor [Member] \| Notes [Member]
Debt Instrument [Line Items]
Aggregate principal amount of notes						$ 11,444,637																			$ 11,444,637
Additional Restructuring [Member] \| Investor [Member]
Debt Instrument [Line Items]
Reverse stock split ratio					20
Additional Restructuring [Member] \| Investor [Member] \| New Warrants [Member]
Debt Instrument [Line Items]
Shares issuable upon warrants exercised \| shares					2.125
Warrants expiry period					42 months
Exercise price of warrants \| $ / shares					$ 122.50
Amendment to Restructuring Agreement [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Exercise price of warrants \| $ / shares			$ 122.50
Warrants issued to purchase Common Stock \| shares			127,551
Series A and Series B Preferred Shares [Member]
Debt Instrument [Line Items]
Payment for redemption of preferred stock																										2,360,000	0
Series A Preferred Stock [Member]
Debt Instrument [Line Items]
Preferred stock redemption price per share \| $ / shares									$ 0.001
Series A Preferred Stock [Member] \| Restructuring Agreement [Member] \| Investor [Member]
Debt Instrument [Line Items]
Number of preferred stock \| shares						4,200																			4,200
Preferred stock redemption price per share \| $ / shares						$ 4.20																			$ 4.20
Series B Convertible Preferred Stock [Member] \| Restructuring Agreement [Member] \| Investor [Member]
Debt Instrument [Line Items]
Number of preferred stock \| shares						2,006																			2,006
Series B Preferred Stock [Member] \| Restructuring Agreement [Member] \| Investor [Member]
Debt Instrument [Line Items]
Payment for redemption of preferred stock						$ 2,006,000
Series C Preferred Shares [Member]
Debt Instrument [Line Items]
Preferred stock redemption price per share \| $ / shares				$ 1,000.00
Conversion of convertible notes				$ 500,000
Series C Preferred Shares [Member] \| Amendment to Restructuring Agreement [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Redemption of shares outstanding for cash payment			$ 590,000
Securities Purchase Agreement [Member] \| Warrant Repurchase Agreements [Member]
Debt Instrument [Line Items]
Aggregate amount to be paid in exchange for cancellation of warrants												$ 7,900,000
Gain on warrant extinguishment												9,600,000
Warrant liability fair value adjustment												$ 17,500,000
Senior Secured Convertible Notes [Member]
Debt Instrument [Line Items]
Debt instrument, principal face amount																						11,437,000				11,437,000		$ 35,000,000
Debt discount on senior notes																						1,701,000				1,701,000
Senior Secured Convertible Notes [Member] \| Amendment to Restructuring Agreement [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Debt instrument, conversion price \| $ / shares		$ 0.05
Number of Notes investors entered into agreement \| Investor			2
Conversion of convertible notes			$ 279,015
Conversion price of debt instrument to purchase price of common stock percentage.		200.00%
Debt instrument, maturity description		The maturity date (as defined in the notes) shall automatically be extended to the earlier to occur of (x) the first anniversary of the date of consummation of the offering contemplated by the registration statement and (y) December 30, 2018
Debt instrument maturity date		Dec. 30, 2018
Debt instrument, deferred description		Until the earlier of (x) this maturity date and (y) the 75th calendar day after the date of consummation of the offering contemplated by the registration statement, all installments to be made under the notes shall be deemed automatically deferred with no conversions during that 75 day period
Debt instrument, conversion treshold days \| d		75
Debt instrument, redemption description		The Company agreed to redeem any portion of the outstanding notes at any time requested by either investor thereto with $7.3 million in cash to be reduced by $0.6 million to redeem the Series C Preferred Stock remaining in the restricted accounts with respect to the 2016 convertible notes
Redemption of outstanding debt instrument for cash		$ 7,300,000
Senior Secured Convertible Notes [Member] \| Series A Preferred Stock [Member]
Debt Instrument [Line Items]
Conversion of convertible notes									$ 4,200,000
Senior Secured Convertible Notes [Member] \| Series C Preferred Shares [Member] \| Amendment to Restructuring Agreement [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Cash held in the restricted accounts		$ 600,000
Senior Secured Convertible Notes [Member] \| Securities Purchase Agreement [Member]
Debt Instrument [Line Items]
Debt instrument, principal face amount																				$ 35,000,000
Debt discount on senior notes																				2,800,000		$ 35,000,000				$ 35,000,000
Interest rate upon default																						0.00%				0.00%
Rate of interest in event of default																										15.00%
Debt instrument interest rate computation terms																										The Notes do not bear any ordinary interest. However, interest shall commence accruing immediately upon the occurrence of, and shall continue accruing during the continuance of, an Event of Default, at 15% per annum and shall be computed on the basis of a 360-day year of twelve 30-day months and shall be payable
Proceeds from issuance of notes available for general corporate purposes																				$ 3,000,000	$ 3,000,000	$ 2,100,000	$ 6,600,000
Amortization payments number of equal installments \| Installment																				14
Period after original date of issuance of notes for which amortization payment begins																			7 months
Debt instrument, original issuance date																										Jun. 13, 2016
Debt instrument, conversion price \| $ / shares																				$ 1,536.50
Debt discount amortization																										$ 33,300,000
Beneficial conversion feature																										4,400,000
Debt instrument, put options issued on default and change in control, value																						0				0
Debt issuance costs																						1,800,000				1,800,000
Amortization of debt issuance costs																										1,200,000
Senior Secured Convertible Notes [Member] \| Securities Purchase Agreement [Member] \| Series A and Series B Preferred Shares [Member]
Debt Instrument [Line Items]
Payment for redemption of preferred stock																						$ 2,400,000
Senior Secured Convertible Notes [Member] \| Securities Purchase Agreement [Member] \| Restricted Cash [Member]
Debt Instrument [Line Items]
Proceeds from issuance of notes and warrants																										7,300,000
Restricted Notes [Member] \| Restructuring Agreement [Member] \| Investor [Member] \| Notes [Member]
Debt Instrument [Line Items]
Aggregate principal amount of notes						10,092,857																			$ 10,092,857
Unrestricted Notes [Member] \| Restructuring Agreement [Member] \| Investor [Member] \| Notes [Member]
Debt Instrument [Line Items]
Aggregate principal amount of notes						1,351,780																			$ 1,351,780
Cancellation Note [Member] \| Restructuring Agreement [Member] \| Investor [Member]
Debt Instrument [Line Items]
Aggregate principal of notes cancelled						$ 1,200,000
Redemption Notes [Member] \| Additional Restructuring [Member] \| Investor [Member]
Debt Instrument [Line Items]
Debt instrument, principal face amount					$ 4,000,000
Debt instrument, redemption price					6,436,852.80
Exchange Notes \| Additional Restructuring [Member] \| Investor [Member]
Debt Instrument [Line Items]
Debt instrument, principal face amount					$ 2,436,852.80
Exchange Notes \| Additional Restructuring [Member] \| Investor [Member] \| New Warrants [Member]
Debt Instrument [Line Items]
Common stock shares purchased \| shares					114,286
Series C Warrants [Member]
Debt Instrument [Line Items]
Aggregate amount to be paid in exchange for cancellation of warrants																										$ 7,876,000	$ 0
Series C Warrants [Member] \| Securities Purchase Agreement [Member]
Debt Instrument [Line Items]
Additional issuance of common stock purchase price per share. \| $ / shares																				$ 0.01
Series C Warrants [Member] \| Senior Secured Convertible Notes [Member] \| Securities Purchase Agreement [Member]
Debt Instrument [Line Items]
Proceeds from issuance of notes and warrants																				$ 32,200,000
Debt discount on senior notes																				$ 27,800,000
Shares issuable upon warrants exercised \| shares																				20,000