Condensed Consolidated Statements of Changes in Equity (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Sep. 30, 2019	Jun. 30, 2018
Private Placement [Member] \| Investor Warrants [Member]
Proceeds allocated to warrant liabilities		$ 1,890
Private Placement [Member] \| Placement Agent Warrants [Member]
Proceeds allocated to warrant liabilities		390
Private Placement [Member]
Direct offering costs	$ 8	1,200
Investor Warrants [Member]
Proceeds allocated to warrant liabilities	200	1,103
Placement Agent Warrants [Member]
Proceeds allocated to warrant liabilities	55	224
Proceeds allocated to warrant liabilities	$ 255	$ 1,327

Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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Period Type:	duration