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Note 10 - Stockholders' Equity - Balances and Conversion of Preferred Shares and Accrued Dividends (Details) - USD ($)	1 Months Ended					3 Months Ended						6 Months Ended
	May 31, 2018	Apr. 30, 2018	Mar. 31, 2018	Oct. 31, 2017	Sep. 30, 2017	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2018	Jun. 30, 2017
Balance									$ 401,250
Balance						$ 198,033				$ 401,250		$ 198,033	$ 401,250
Series A-1 Convertible Preferred Stock [Member]
Balance (in shares)							62,596				90,000	62,596	90,000
Balance							$ 236,658				$ 270,000	$ 236,658	$ 270,000
Accrual of dividends						$ 25,463	$ 93,894	$ 101,658	135,000	135,000	$ 135,000
Conversion into common stock (in shares)	(23,508)	(39,088)		(27,404)
Conversion into common stock	$ (25,463)	$ (330,552)			$ (540,000)
Balance (in shares)								62,596
Balance								$ 236,658
Series B-1 Convertible Preferred Stock [Member]
Balance (in shares)							105,000				105,000	105,000	105,000
Balance							$ 393,750				$ 131,250	$ 393,750	$ 131,250
Accrual of dividends						$ 16,408	$ 62,268	$ 65,625	$ 65,625	$ 65,625	$ 65,625
Conversion into common stock (in shares)	(44,580)		(60,420)
Conversion into common stock	$ (55,342)		$ (417,084)
Balance (in shares)								105,000
Balance								$ 393,750

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- Definition

The value of the dividends payable that are converted in a noncash (or part noncash) transaction.

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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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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

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Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.

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