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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 9 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Statement of Cash Flows [Abstract]    
Net loss $ (8,513) $ (5,862)
Adjustment to reconcile net loss to net cash:    
Depreciation and amortization 486 312
Provision for bad debt 1,718 0
Impairment of non-marketable securities 37 0
Common stock-based compensation and expenses 1,072 523
Forgiveness of PPP Loan (430) 0
Changes in:    
Accounts receivables 11 (93)
Inventory 51 (911)
Deposits and advances (186) (2,031)
Claims and advances (10) 55
Accounts payable (117) 112
Accrued and other liabilities (669) (400)
Operating lease asset 6 0
Operating lease liability (31) 0
Net cash used in operating activities (6,575) (8,295)
Investing activities:    
Purchase of property, plant, and equipment (152) (1,381)
Proceed from marketable securities 0 3,081
Investment in non-marketable securities 0 (149)
Acquisition and filing cost of patents and rights (37) (92)
Net cash (used in)/provided by investing activities (189) 1,459
Financing activities:    
Issuance of equity stock through offering (net of expenses) 4,145 0
Proceeds from/Repayment of long- term loan (2) 530
Net cash provided by financing activities 4,143 530
Effects of exchange rate changes on cash and cash equivalents 14 16
Net decrease in cash and cash equivalents (2,607) (6,290)
Cash and cash equivalents at the beginning of the period 14,548 7,258
Cash and cash equivalents at the end of the period 11,941 968
Non-cash items:    
Common stock issued/granted for stock-based compensation, including patent acquisition 1,072 573
Amortization of operating lease 80 20
Forgiveness of PPP Loan $ (430) $ 0