Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		11 Months Ended	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Jun. 30, 2019
Cash flows from operating activities:
Net loss	$ (2,068)	$ (2,238)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	104	36
Depreciation and amortization	141	75
Net loss on sale of available-for-sale investments	0	31
Changes in assets and liabilities:
Accounts receivable	0	(17)
Inventory	1	0
Accounts payable	(61)	(7)
Other assets and liabilities	53	(127)
Net cash used in operating activities	(1,830)	(2,247)		$ (8,500)
Cash flows from investing activities:
Proceeds from sale of available-for-sale investments	0	3,345
Proceeds from maturities of securities	0	250
Net cash provided by investing activities	0	3,595
Cash flows from financing activities:
Payments for purchase of treasury stock	0	(1)
Proceeds from term note payable - related party	1,500	0
Proceeds from exercise of stock options	0	7
Proceeds from issuance of stock, net of offering issuance costs	321	0	$ 1,400
Net cash provided by financing activities	1,821	6
Net change in cash and cash equivalents	(9)	1,354
Cash and cash equivalents at beginning of period	1,588	552		552
Cash and cash equivalents at end of period	1,579	1,906	$ 1,579	$ 1,588
Supplemental disclosures of cash flow information:
Cash paid for interest	0	0
Income taxes paid	0	0
Operating right-of-use assets and associated liabilities	1,608	0
ASU 2016-02
Supplemental disclosures of cash flow information:
Impact to retained earnings from adoption of ASC Topic 842	$ 230	$ 0