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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Statement of Cash Flows [Abstract]    
Net loss $ (2,785) $ (1,788)
Adjustment to reconcile net loss to net cash:    
Depreciation and amortization 162 157
Impairment of non-marketable securities 0 37
Common stock-based compensation and expenses, net 1,152 125
Loss on sale of Fixed Asset 68 0
Forgiveness of PPP Loan 0 (430)
Changes in:    
Accounts receivables, net (23) 13
Inventory (74) 2
Deposits and advances 73 4
Claims and advances 15 7
Accounts payable (524) 90
Accrued and other liabilities (258) (46)
Operating lease asset 31 (50)
Operating lease liability (33) 28
Net cash used in operating activities (2,196) (1,851)
Cash flow from investing activities:    
Purchase of property, plant, and equipment (127) (93)
Acquisition and filing cost of patents and rights (31) (2)
Net cash used in investing activities (158) (95)
Cash flows from financing activities:    
Issuance of equity stock through offering (net of expenses) 0 726
Proceeds from/repayment of long-term loan (1) 0
Net cash (used in)/provided by financing activities (1) 726
Effects of exchange rate changes on cash and cash equivalents (52) (9)
Net decrease in cash and cash equivalents (2,407) (1,229)
Cash and cash equivalents at the beginning of the period 10,460 14,548
Cash and cash equivalents at the end of the period 8,053 13,319
Supplementary information:    
Cash paid for interest 0 0
Non-cash items:    
Common stock issued/granted for stock-based compensation, including patent acquisition 1,152 125
Forgiveness of PPP Loan 0 (430)
Amortization of operating lease $ 28 $ 27