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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- Definition

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.

+ References

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- Definition

The cash inflow associated with the amount received from holders exercising their stock warrants.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Number of additional shares authorized for issuance under share-based payment arrangement.

+ References

No definition available.

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Number of shares authorized for issuance under share-based payment arrangement.

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The number of shares issued during the period from exercises of warrants.

+ References

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Note 16 - Subsequent Events (Details Textual) - USD ($)		1 Months Ended
Note 16 - Subsequent Events (Details Textual) - USD ($)	Jan. 01, 2020	Feb. 28, 2020	Jan. 31, 2020	Dec. 31, 2019	Nov. 30, 2019	Jan. 31, 2019	Feb. 19, 2020	Nov. 26, 2019	Jan. 01, 2019	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Series A Preferred Stock [Member]
Preferred Stock, Shares Outstanding, Ending Balance				1,852,173						0
Series A Convertible Preferred Stock Into Common Stock [Member]
Conversion of Stock, Shares Converted				3,021,237	600,000
Subsequent Event [Member] \| Series A Warrants [Member]
Stock Issued During Period, Shares, Warrant Exercises		1,026,240
Proceeds from Warrant Exercises		$ 1,591,000
Subsequent Event [Member] \| Series B Warrants [Member]
Stock Issued During Period, Shares, Warrant Exercises		45,473
Proceeds from Warrant Exercises		$ 70,000
Subsequent Event [Member] \| Series A Preferred Stock [Member]
Preferred Stock, Shares Outstanding, Ending Balance							0
Subsequent Event [Member] \| Series A Convertible Preferred Stock Into Common Stock [Member]
Conversion of Stock, Shares Converted		669,022	1,183,151
The 2013 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized						20,431
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized				11,872,531				11,872,531	69,571	49,140	49,140	40,000
The 2013 Plan [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized	2,639,926
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	14,512,457