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Subsequent Events	6 Months Ended
	Jun. 30, 2019
Subsequent Events [Abstract]
Subsequent Events	(14) Subsequent Events Debt Issuances On June 6, 2019, the Company entered into an agreement with two institutional investors, pursuant to which the investors agreed to transfer and surrender to the Company for cancellation of warrants to purchase 3.9 million shares of the Company’s common stock (the “Series D Warrants”) and warrants to purchase 53.4 million shares of the Company’s common stock (the “Pre-Funded Series D Warrants”). Under the terms of the Purchase Agreement, the investors agreed to defer the payment of the purchase price for the Series D Warrants and Pre-Funded Series D Warrants and, accordingly, the Company agreed to sell and issue to the investors 8% Senior Secured Promissory Notes in an aggregate principal amount of $2 million in full payment and satisfaction of the purchase price for the Series D Warrants and Pre-Funded Series D Warrants. This agreement was effective upon the closing of the Company’s Private Placement discussed below. Equity Financing On July 11, 2019, the Company and certain accredited investors entered into a securities purchase agreement pursuant to which the Company sold to investors an aggregate of 20,000 shares of Series E convertible preferred stock, par value $0.01 per share (the “Series E Preferred Stock”) at a price of $1,000 per share and a warrant (a “2019 Warrant”) to purchase a number of shares of common stock of the Company, equal to the number of shares of common stock issuable upon conversion of the Series E Preferred Stock purchased by the investor (the “Private Placement”).  Each 2019 Warrant has an exercise price of $0.06, subject to adjustment in accordance with the terms of the 2019 Warrants, and is exercisable at any time beginning on the date that the Company effects a reverse stock split until 5:00 p.m. (NYC time) on the fifth anniversary of the date of the reverse stock split. The Company received gross proceeds from the Private Placement of $20.0 million, before deducting cash fees in the amount of $1.4 million payable to Roth Capital Partners, LLC (“Roth”) for serving as placement agent and cash fees in the amount of $0.6 million payable to Roth for serving as placement agent for certain prior securities offerings by the Company, and other transaction costs, fees and expenses payable by the Company.

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- Definition

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

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