| Dec'18 | Dec'17 | Dec'16 | Mar'16 | Mar'15 | Mar'14 | Mar'13 | Mar'12 | Mar'11 | Mar'10 |
|---|---|---|---|---|---|---|---|---|---|
Cash flows from operating activities: | |||||||||
Net loss | |||||||||
-6,503 | -4,778 | - | - | - | - | - | - | - | - |
Net loss | |||||||||
- | - | -13,948 | -6,938 | -5,988 | -2,773 | -10,688 | -4,928 | -1,992 | -4,140 |
Adjustments to reconcile net loss to net cash used in operating activities: | |||||||||
Depreciation and amortization | |||||||||
435 | 400 | 673 | 950 | 1,061 | 1,136 | 1,252 | 1,178 | 864 | - |
Depreciation and amortization | |||||||||
- | - | - | - | - | - | - | - | - | 603 |
Non-cash equity based compensation | |||||||||
676 | 346 | 336 | 595 | 687 | 789 | 1,170 | 932 | 1,234 | 660 |
Recovery of impaired assets | |||||||||
- | - | -585 | -585 | - | -868 | 4,980 | - | - | - |
Gain on sale of long-lived assets | |||||||||
- | 606 | -39 | - | - | - | - | - | - | - |
Loss (gain) on disposal of long-lived assets | |||||||||
- | - | - | - | -1 | 37 | -22 | 3 | -17 | - |
Impairment of long-lived assets | |||||||||
- | - | - | - | - | - | - | 27 | - | - |
Impairment of investment | |||||||||
- | - | - | - | - | - | - | - | - | 0 |
Impairment of inventories | |||||||||
- | - | 7,176 | 9 | 44 | 5 | 8 | 10 | 10 | 26 |
Change in operating assets and liabilities: | |||||||||
Accounts receivable | |||||||||
857 | -339 | 500 | -41 | -328 | -1,218 | 1,099 | 1,978 | 1,139 | 816 |
Costs and estimated earnings on uncompleted contracts | |||||||||
- | 29 | - | - | - | - | - | - | - | - |
Other receivable | |||||||||
- | - | - | 855 | -855 | - | - | - | - | - |
Costs and estimated earnings on uncompleted contracts | |||||||||
- | - | - | -10 | 291 | -162 | -99 | - | - | - |
Inventories | |||||||||
2,442 | 591 | -75 | -232 | -655 | -938 | 1,796 | 8,360 | 932 | 10 |
Prepaid expenses and other current assets | |||||||||
144 | -16 | -39 | 6 | 2 | -45 | -135 | 189 | 226 | 22 |
Purchases of short-term investments | |||||||||
- | - | - | - | - | 0 | 245 | 7,369 | 20,435 | 12,412 |
Maturities of short-term investments | |||||||||
- | - | - | - | 63 | - | 728 | 15,219 | 24,570 | 3,295 |
Other assets | |||||||||
- | - | - | - | - | - | 0 | 61 | -1 | 1 |
Other assets | |||||||||
- | - | - | - | - | - | - | - | - | 9 |
Accounts payable and other current liabilities | |||||||||
2,621 | -206 | 455 | -7 | 65 | -470 | -1,050 | 2,506 | -245 | 1,219 |
Unearned revenue | |||||||||
582 | - | - | - | - | - | - | - | - | - |
Billings in excess of costs and estimated earnings on engineering services contracts | |||||||||
-88 | 199 | - | - | - | - | - | - | - | - |
Billings in excess of costs and estimated earnings on engineering services contracts | |||||||||
- | - | -60 | -84 | 84 | - | -7 | -8 | -35 | -19 |
Other long-term liabilities | |||||||||
- | - | - | -156 | 262 | -445 | -87 | - | - | - |
Net cash used in operating activities | |||||||||
- | - | - | -5,104 | -3,363 | -622 | -7,259 | - | - | - |
Other long-term liabilities | |||||||||
-15 | -20 | -105 | - | - | - | - | -601 | 160 | - |
Deferred compensation under executive employment agreements | |||||||||
- | - | - | - | - | - | - | - | - | 81 |
Net cash used in operating activities | |||||||||
-5,735 | -4,870 | -6,403 | - | - | - | - | -11,414 | -2,284 | -2,428 |
Cash flows from investing activities: | |||||||||
Acquisition of property and equipment, net | |||||||||
373 | 83 | 132 | 144 | 558 | 377 | 561 | 2,132 | 7,388 | 9,210 |
Property and equipment reimbursements received from DOE under grant | |||||||||
- | - | - | - | 371 | 215 | 208 | 1,486 | 3,735 | 3,574 |
Cash paid for patent and trademark fees | |||||||||
54 | 30 | 20 | 32 | 28 | 54 | 14 | 21 | 9 | 37 |
Cash proceeds from the sale of long-lived assets | |||||||||
- | 1,392 | - | - | - | 1,565 | 0 | 3 | 1 | - |
Net cash used in investing activities | |||||||||
- | - | - | -176 | -153 | 1,348 | 114 | - | - | - |
Net cash used in investing activities | |||||||||
-428 | 1,279 | -153 | - | - | - | - | 7,124 | 475 | -14,793 |
Cash flows from financing activities: | |||||||||
Issuance of common stock upon exercise of warrants | |||||||||
- | - | - | - | - | - | - | - | - | 180 |
Cash received for shares exercised under employee stock purchase plan | |||||||||
53 | 53 | 44 | 39 | 4 | 21 | 75 | 60 | 22 | 106 |
Registered direct offering costs | |||||||||
- | - | 65 | - | - | - | - | - | - | - |
Proceeds from line of credit | |||||||||
1,500 | 3,100 | - | - | - | - | - | - | - | - |
Payment of employee tax withholdings in exchange for return of common stock | |||||||||
10 | 12 | 10 | 92 | 171 | - | 40 | 12 | 143 | 160 |
Repayment of debt | |||||||||
- | - | - | - | - | - | - | - | - | -416 |
Issuance of common stock upon definitive stock purchase agreement | |||||||||
- | 5,099 | - | 5,778 | - | 4,911 | - | - | - | 31,664 |
Cash received for issuance of common stock upon exercise of employee and directors options | |||||||||
26 | 59 | - | - | 22 | 60 | - | - | 69 | 1,084 |
Net cash provided by financing activities | |||||||||
- | - | - | 5,725 | -145 | 4,993 | 34 | - | - | - |
Net cash provided by financing activities | |||||||||
1,569 | 8,300 | -31 | - | - | - | - | 48 | -52 | 32,458 |
Increase (decrease) in cash, cash equivalents, and restricted cash | |||||||||
-4,594 | 4,709 | -6,588 | - | - | - | - | - | - | - |
Decrease in cash and cash equivalents | |||||||||
- | - | - | 444 | -3,661 | 5,719 | -7,110 | -4,240 | -1,860 | 15,237 |
Interest paid in cash during the period | |||||||||
- | - | - | - | - | - | - | - | - | 17 |