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Condensed Consolidated Statements of Cash Flows (Unaudited) (Parentheticals) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Series G Convertible Preferred Stock Issued in Exchange for Cancellation of Term notes Payable [Member]
Convertible note, shares issued (in shares)	250
Convertible note, value	$ 250,000
Conversion of Series C Preferred Stock Into Series F Preferred Stock [Member]
Convertible preferred stock (in shares)	1,563
Conversion of Series E Preferred Stock Into Series F Preferred Stock [Member]
Convertible preferred stock (in shares)	1,200
Conversion of Series C and Series E Preferred Stock Into Series F Preferred Stock [Member]
Conversion of stock, shares issued (in shares)	2,763
Conversion of Series C Preferred Stock Into Common Stock [Member]
Convertible preferred stock (in shares)	587
Conversion of stock, shares issued (in shares)	78,280
Conversion of Series F Preferred Stock Into Common Stock [Member]
Convertible preferred stock (in shares)	461	293,300
Conversion of stock, shares issued (in shares)	293,300
Conversion From Series D Convertible Preferred Stock To Common Stock [Member]
Convertible preferred stock (in shares)		795
Conversion of stock, shares issued (in shares)		106,000

X

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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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