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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Cash flows from operating activities:    
Net loss $ (8,811) $ (7,315)
Adjustment to reconcile net loss to net cash:    
Depreciation and amortization 478 144
Impairment of investment 169 782
Common stock-based compensation and expenses, net 658 770
Changes in:    
Accounts receivables, net (42) (49)
Inventory (1,233) (3,998)
Deposits and advances (2,198) (259)
Claims and advances 93 (307)
Accounts payable (287) 442
Accrued and other liabilities 373 1,113
Net cash used in operating activities (10,800) (8,677)
Cash flow from investing activities:    
Purchase of property, plant, and equipment (1,470) (4,389)
Sale of property, plant, and equipment 47 0
Investment in marketable securities 5,081 (5,081)
Investment in non-marketable securities (149) 0
Acquisition and filing cost of patents and rights (122) (77)
Net cash (used in)/provided by investing activities 3,387 (9,547)
Cash flows from financing activities:    
Issuance of equity stock through public offering (net of expenses) 14,158 (59)
Issuance of equity stock through private placement (net of expenses) 0 0
Repayment of loan (50) 0
Proceeds from borrowings, net 580 0
Net cash (used in)/provided by financing activities 14,688 (59)
Effects of exchange rate changes on cash and cash equivalents 15 (69)
Net increase/(decrease) in cash and cash equivalents 7,290 (18,352)
Cash and cash equivalents at the beginning of the period 7,258 25,610
Cash and cash equivalents at the end of the period 14,548 7,258
Supplementary information:    
Cash paid for interest 0 8
Non-cash items:    
Common stock issued/granted including ESOP, consultancy 658 770
Common stock issued/granted other than ESOP, consultancy 150 0
Amortization of operating lease $ 22 $ 7