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Subsequent Events	3 Months Ended
	Mar. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	(14) Subsequent Events Debt Issuances On April 19, 2019, April 26, 2019, May 9, 2019 and May 23, 2019, the Company borrowed an aggregate $3.3 million from two institutional investors and issued promissory notes to the investors. The promissory notes have an aggregate principal amount of $3.3 million, bear interest at the rate of 8% per annum and are due six months from the issuance of each note. The promissory notes are nonconvertible. The notes contain standard events of default and remedies therefor. The Company’s obligations under the promissory notes to the institutional investor are secured by a lien on the Company’s assets. 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 3.9 million Series D Warrants and 53.4 million 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. Equity Financing On July 11, 2019, the Company and certain accredited investors (each an “Investor” and, collectively, the “Investors”) entered into a securities purchase agreement (the “Securities Purchase Agreement”) pursuant to which the Company expects to sell and issue to the Investors an aggregate of 20,000 shares of Series E Convertible Preferred Stock, par value $0.01 per share, at a price of $1,000 per share (the “Private Placement”).  Pursuant to the Securities Purchase Agreement, the Company will issue to each Investor a warrant (a “Warrant”) to purchase a number of shares of common stock of the Company, par value $0.01 per share (“Common Stock”), equal to the number of shares of Common Stock issuable upon conversion of the Series E Preferred Stock purchased by the Investor.  Each Warrant will have an exercise price equal to $0.06, subject to adjustment in accordance with the terms of the Warrants (the “Exercise Price”), and be 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 date that is five years following the date that the Company effects a reverse stock split. The Company expects to receive gross proceeds from the Private Placement of approximately $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 for the Private Placement and cash fees in the amount of $552,000 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. Warrant exercises 3.8 million Pre-Funded Series D Warrants have been exercised.

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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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