Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net loss	$ (4,947)	$ (4,209)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	791	798
Depreciation and amortization	199	94
Changes in assets and liabilities:
Accounts receivable	(56)	(87)
Cost and estimated revenue in excess of billings	(2)	0
Inventory, net	21	86
Accounts payable	132	(306)
Income tax payable	(1)	0
Other assets and liabilities	(392)	140
Net cash used in operating activities	(4,255)	(3,484)
Cash flows from investing activities:
Purchase of security investments	(5,100)	0
Purchases of property and equipment	(632)	(264)
Net cash used in investing activities	(5,732)	(264)
Cash flows from financing activities:
Repayment of related party debt	(500)	(2,000)
Repayments on lease financing	(77)	(18)
Net cash used in financing activities	(577)	(2,018)
Net change in cash and cash equivalents	(10,564)	(5,766)
Cash and cash equivalents at beginning of period	26,453	35,936
Cash and cash equivalents at end of period	15,889	30,170
Supplemental disclosures of cash flow information:
Cash paid for interest	63	3
Acquisition of equipment through financing lease	0	394
Operating right of use assets and associated liabilities	223	0
Income taxes paid	$ 1	$ 0