The maximum aggregate offering price of common stock to be issued pursuant to the At Market Issuance Sales Agreement.

No definition available.

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- Definition

Represents the prepayment premium as a percentage of the accreted value of the debt instrument.

+ References

No definition available.

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- Definition

The cash inflow before any costs from the issuance of common stock.

+ References

No definition available.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

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- Definition

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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- Definition

The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

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The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Number of new stock issued during the period.

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Note 14 - Subsequent Events (Details Textual) - USD ($)		2 Months Ended	12 Months Ended
Note 14 - Subsequent Events (Details Textual) - USD ($)	Mar. 05, 2020	Mar. 13, 2020	Dec. 31, 2019	Mar. 06, 2020	Dec. 31, 2018	May 31, 2017	May 25, 2017	Apr. 26, 2016
Debt Conversion, Original Debt, Amount			$ 12,700,000
2017 Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights							362,500
Class of Warrant or Right, Exercise Price of Warrants or Rights			$ 14.54				$ 14.94
Subsequent Event [Member] \| November 2018 At the Market Offering [Member]
Stock Issued During Period, Shares, New Issues		408,992
Proceeds from Issuance of Common Stock, Gross		$ 4,000,000
At Market Issuance Sales Agreement, Maximum Aggregate Offering Price				$ 25,000,000
Subsequent Event [Member] \| 2017 Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	362,500
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 6.75
Conversion of Convertible Senior Notes 2020 into Preferred Stock [Member] \| Subsequent Event [Member]
Debt Conversion, Original Debt, Amount	$ 27,300,000
Debt Conversion, Converted Instrument, Shares Issued	10,000
Conversion of Convertible Senior Notes 2020 into Common Stock [Member] \| Subsequent Event [Member]
Debt Conversion, Original Debt, Amount	$ 17,500,000
Debt Conversion, Converted Instrument, Amount	$ 2,600,000
2020 Convertible Senior Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage			7.00%		7.00%			7.00%
Debt Instrument, Face Amount								$ 27,400,000
Senior Secured Debt [Member]
Debt Instrument, Interest Rate, Stated Percentage							3.00%
Debt Instrument, Face Amount						$ 60,000,000
Senior Secured Debt [Member] \| Subsequent Event [Member]
Debt Instrument, Prepayment Premium, Percent	7.00%