Amount of expense (income) related to adjustment to fair value of warrant liability.

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Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

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-Topic 235
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-Paragraph 1
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Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
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Note 5 - Fair Value Measurement and Fair Value of Financial Instruments (Details Textual) $ in Thousands		3 Months Ended	6 Months Ended		18 Months Ended
	Mar. 12, 2019 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2019 USD ($)	Sep. 30, 2018 USD ($)	Oct. 31, 2017 USD ($)
Warrants and Rights Outstanding		$ 20,622	$ 20,622		$ 20,622
Fair Value Adjustment of Warrants			10,215	$ (20)
Interest and Other Expense [Member]
Fair Value Adjustment of Warrants	$ 10,300
Warrants Issued as Consideration for Loan [Member]
Warrants and Rights Outstanding		122	122		122		$ 341
Fair Value Adjustment of Warrants					219
Series Warrants [Member]
Warrants and Rights Outstanding	$ 21,500	20,500	$ 20,500		$ 20,500
Series Warrants [Member] \| Interest and Other Expense [Member]
Fair Value Adjustment of Warrants		$ 1,000
Measurement Input, Expected Term [Member] \| Warrants Issued as Consideration for Loan [Member]
Warrants and Rights Outstanding, Measurement Input							8
Measurement Input, Expected Term [Member] \| Series Warrants [Member]
Warrants and Rights Outstanding, Measurement Input	5.5
Measurement Input, Price Volatility [Member] \| Warrants Issued as Consideration for Loan [Member]
Warrants and Rights Outstanding, Measurement Input		0.75	0.75		0.75		0.8
Measurement Input, Price Volatility [Member] \| Series Warrants [Member]
Warrants and Rights Outstanding, Measurement Input	76.8
Measurement Input, Risk Free Interest Rate [Member] \| Warrants Issued as Consideration for Loan [Member]
Warrants and Rights Outstanding, Measurement Input		2.29	2.29		2.29		0.0224
Measurement Input, Risk Free Interest Rate [Member] \| Series Warrants [Member]
Warrants and Rights Outstanding, Measurement Input	2.4
Measurement Input, Share Price [Member] \| Warrants Issued as Consideration for Loan [Member]
Warrants and Rights Outstanding, Measurement Input		8	8		8