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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Jun. 30, 2023
Jun. 30, 2022
CASH FLOWS FROM OPERATING ACTIVITIES    
Net loss $ (3,737) $ (3,499)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation expense 484 739
Depreciation and amortization 58 29
Shares for services 5 51
Changes in assets and liabilities:    
Other assets and prepaid expenses (40) 2
Lease right-of-use asset 83 22
Accounts payable and accrued expenses 46 16
Lease liabilities (106) (35)
Net cash used in operating activities (3,207) (2,675)
CASH FLOWS FROM INVESTING ACTIVITIES    
Purchases of property and equipment (373) (76)
Net cash used in investing activities (373) (76)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from issuance of common stock and warrants, net. 9,733 7,372
Net cash provided by financing activities 9,733 7,372
Net increase in cash and cash equivalents 6,153 4,621
Cash and cash equivalents at beginning of period 3,799 9,076
Cash and cash equivalents at end of period $ 9,952 $ 13,697