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Represents number of convertible preferred stock and related warrants issued during the period.

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Conversion price related to convertible preferred stock.

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Represents the conversion price pf convertible preferred stock represented as percentage of volume weighted average price of the common stock.

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Represents number of series C and series E preferred stock exchanged for series F convertible preferred stock.

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Represents the maximum amount of proceeds from issuance of convertible preferred stock and related warrants during the period.

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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 number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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Number of new stock issued during the period.

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Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Note 9 - Preferred Stock (Details Textual) - USD ($)								1 Months Ended		2 Months Ended	3 Months Ended	9 Months Ended
Note 9 - Preferred Stock (Details Textual) - USD ($)	Jul. 24, 2019	Jul. 16, 2019	Jun. 19, 2019	Apr. 26, 2019	Feb. 26, 2019	Feb. 25, 2019	Feb. 18, 2019	Jul. 31, 2019	Feb. 28, 2019	Feb. 28, 2019	Sep. 30, 2019	Sep. 30, 2019	Dec. 31, 2018
Preferred Stock, Shares Authorized											10,000,000	10,000,000	10,000,000
Preferred Stock, Par or Stated Value Per Share											$ 0.01	$ 0.01	$ 0.01
Preferred Stock, Shares Outstanding, Ending Balance											3,054	3,054	3,450
Series I Warrants [Member]
Convertible Preferred Stock and Related Warrants Issued					33,334
Class of Warrant or Right, Exercise Price of Warrants or Rights					$ 7.50
Class of Warrant or Right, Number of Securities Called by Warrants or Rights					66,668
Series G Warrants [Member]
Warrants and Rights Outstanding, Term					5 years
Series G Convertible Preferred Stock and Related Warrants [Member]
Convertible Preferred Stock and Related Warrants, Authorized						1,000
Proceeds from Issuance of Convertible Preferred Stock and Related Warrants, Maximum			$ 500,000	$ 500,000	$ 250,000	$ 1,000,000
Convertible Preferred Stock and Related Warrants Issued			500	500	500
Conversion of Series C Preferred Stock Into Common Stock [Member]
Conversion of Stock, Shares Converted										587		587
Conversion of Stock, Shares Issued										78,280		78,280
Conversion of Series C Preferred Stock Into Series F Preferred Stock [Member]
Conversion of Stock, Shares Converted									1,563			1,563
Conversion of Series E Preferred Stock Into Series F Preferred Stock [Member]
Conversion of Stock, Shares Converted									1,200			1,200
Conversion of Series F Preferred Stock Into Common Stock [Member]
Conversion of Stock, Shares Converted											46	507
Conversion of Stock, Shares Issued											88,400	381,700
Conversion from Series F Preferred Stock to Series H Preferred Stock [Member]
Conversion of Stock, Shares Converted								2,256				2,256
Conversion from Series F and Series G Preferred Stock to Series H Preferred Stock [Member]
Conversion of Stock, Shares Issued		3,256										3,256
Conversion of Series H Preferred Stock Into Common Stock [Member]
Conversion of Stock, Shares Converted											1,002	1,002
Conversion of Stock, Shares Issued											94,687,441	94,687,441
Conversion of Series I Preferred Stock [Member]
Conversion of Stock, Shares Converted											0
Series B Convertible Preferred Stock [Member]
Preferred Stock, Par or Stated Value Per Share											$ 1,000	$ 1,000
Conversion of Stock, Shares Converted												0
Preferred Stock, Shares Outstanding, Ending Balance											100	100	100
Convertible Preferred Stock, Conversion Price1											$ 175	$ 175
Series E Convertible Preferred Stock [Member]
Preferred Stock, Par or Stated Value Per Share											$ 1,000	$ 1,000
Conversion of Stock, Shares Converted												0
Preferred Stock, Shares Outstanding, Ending Balance													1,200
Series F Convertible Preferred Stock [Member]
Preferred Stock, Par or Stated Value Per Share							$ 1,000				$ 1,000	$ 1,000
Convertible Preferred Stock, Conversion Price1							$ 7.50
Number of Series C and Series E Preferred Stock Exchanged for Series F Convertible Preferred Stock							2,763
Convertible Preferred Stock, Conversion Price, Percentage of Volume Weighted Average Price of the Common Stock							90.00%
Series G Convertible Preferred Stock [Member]
Preferred Stock, Par or Stated Value Per Share						$ 1,000					$ 1,000	$ 1,000
Preferred Stock, Shares Outstanding, Ending Balance								1,000
Convertible Preferred Stock, Conversion Price1						$ 7.50
Convertible Preferred Stock, Conversion Price, Percentage of Volume Weighted Average Price of the Common Stock						90.00%
Series H Convertible Preferred Stock [Member]
Preferred Stock, Par or Stated Value Per Share		$ 1,000
Preferred Stock, Shares Outstanding, Ending Balance											2,254	2,254
Convertible Preferred Stock, Conversion Price1		$ 7.50
Series I Convertible Preferred Stock [Member]
Preferred Stock, Par or Stated Value Per Share	$ 1,000
Preferred Stock, Shares Outstanding, Ending Balance											700	700
Convertible Preferred Stock, Conversion Price1	$ 7.50
Stock Issued During Period, Shares, New Issues	700
Proceeds from Issuance of Preferred Stock and Preference Stock	$ 700,000
Series C Convertible Preferred Stock [Member]
Preferred Stock, Par or Stated Value Per Share											$ 1,000	$ 1,000
Preferred Stock, Shares Outstanding, Ending Balance													2,150