| Dec'19 | Dec'18 | Dec'17 | Dec'16 | Dec'15 | Dec'14 | Dec'13 | Dec'12 | Dec'11 | Dec'10 | Dec'09 |
|---|---|---|---|---|---|---|---|---|---|---|
Cash flows from operating activities | ||||||||||
Net loss | ||||||||||
-26,483 | -27,250 | -25,486 | -16,472 | -14,542 | -18,120 | -13,178 | -22,693 | -35,808 | -47,460 | -39,529 |
Adjustments to reconcile net loss to net cash used in operations: | ||||||||||
Impairment of intangible assets | ||||||||||
160 | 0 | - | - | - | 40 | 277 | 284 | 0 | - | - |
Impairment of property and equipment | ||||||||||
434 | 0 | - | - | - | - | - | - | - | - | - |
Depreciation | ||||||||||
- | - | 1,141 | 1,120 | 429 | 414 | 923 | 1,445 | 2,406 | 1,731 | 1,138 |
Depreciation and amortization | ||||||||||
1,649 | 1,838 | - | - | - | - | - | - | - | - | - |
Amortization of intangible assets | ||||||||||
- | - | 116 | 127 | 128 | 132 | 158 | 184 | 185 | 32 | 2 |
Gain on disposal of property and equipment | ||||||||||
- | - | - | - | - | - | - | 79 | 11 | 0 | 0 |
Realizeld loss on sale of short-term investments | ||||||||||
- | - | - | - | - | - | - | 32 | - | - | - |
Realized loss on sale of short-term investments | ||||||||||
- | - | - | - | - | - | - | - | 0 | -127 | 0 |
Share-based compensation expense | ||||||||||
1,569 | 1,061 | 1,288 | 1,223 | 1,007 | 713 | 1,606 | 2,269 | 3,356 | 3,450 | 3,373 |
Loss on warrant exchange | ||||||||||
- | - | - | - | - | -4,967 | 1,900 | 0 | - | - | - |
Realized gain on warrant exchange | ||||||||||
- | - | - | - | - | - | - | 0 | - | - | - |
Loss (gain) on derivative instruments | ||||||||||
- | - | - | - | - | - | - | - | - | 842 | -506 |
Inventory write-downs | ||||||||||
2,203 | 4,414 | 1,004 | 187 | 287 | 42 | 303 | 1,094 | 1,563 | 9,579 | 1,257 |
Other non-cash adjustments | ||||||||||
0 | 203 | -42 | 27 | -62 | -91 | - | - | - | - | - |
Other non-cash adjustments | ||||||||||
- | - | - | - | - | - | -66 | -118 | -340 | -276 | -276 |
Change in: | ||||||||||
Accounts receivable, net | ||||||||||
603 | 461 | -230 | -1,442 | 1,018 | 645 | -1,091 | 652 | -653 | 203 | 376 |
Costs and estimated earnings in excess of billings on uncompleted contracts | ||||||||||
-987 | 307 | 555 | 125 | 0 | - | - | - | - | - | - |
Costs and estimated earnings in excess of billings on uncompleted contracts | ||||||||||
- | - | - | - | - | - | - | -58 | -67 | 67 | -625 |
Inventory | ||||||||||
1,286 | 982 | 4,312 | 558 | 1,033 | 109 | -145 | -2,663 | -258 | 14,728 | 658 |
Other current and non-current assets | ||||||||||
1,911 | 663 | -2,314 | -18 | -147 | -155 | 884 | -419 | -221 | 187 | 115 |
Other assets | ||||||||||
- | - | - | - | - | - | - | 12 | -16 | 15 | -3 |
Accounts payable | ||||||||||
-268 | -1,079 | 1,147 | -174 | 493 | -25 | -1,486 | -4,077 | -532 | 2,591 | 1,477 |
Accrued liabilities | ||||||||||
-3,379 | -374 | 2,226 | 245 | 572 | 335 | -1,387 | -1,175 | 808 | -358 | 646 |
Deferred revenue | ||||||||||
21 | 0 | - | -2,122 | 8,271 | 0 | -609 | 609 | 0 | - | - |
Billings on uncompleted contracts in excess of related costs | ||||||||||
0 | -5 | -138 | 168 | -230 | -450 | 582 | -58 | 75 | 26 | -7 |
Other currrent liabilities | ||||||||||
-316 | 12 | 9,964 | - | - | - | - | - | - | - | - |
Operating lease liabilities | ||||||||||
-642 | 0 | - | 56 | 18 | - | - | - | - | - | - |
Other long-term liabilities | ||||||||||
0 | -305 | 252 | - | - | - | - | - | - | - | - |
Other long-term liabilities | ||||||||||
- | - | - | 53 | 0 | 0 | - | - | -330 | 0 | 0 |
Net cash used in operating activities | ||||||||||
-24,043 | -22,572 | -15,479 | -14,821 | -5,827 | -12,952 | -12,657 | -20,621 | -27,887 | -46,196 | -31,710 |
Cash flows from investing activities | ||||||||||
Sales of investment securities | ||||||||||
- | - | - | - | - | - | - | 11 | 0 | 2,573 | 0 |
Decrease in restricted cash | ||||||||||
- | - | - | - | - | - | - | -350 | - | - | - |
Purchases of restricted investment securities | ||||||||||
- | - | - | - | - | - | - | - | - | 305 | 0 |
(Increase) decrease in restricted investment | ||||||||||
- | - | - | - | - | - | - | - | -709 | 1 | -143 |
Proceeds on sale of property and equipment | ||||||||||
- | - | 59 | 4 | 0 | 34 | 35 | 80 | 11 | 0 | 0 |
Purchases of property and equipment | ||||||||||
745 | 1,118 | 3,100 | 895 | 1,140 | 207 | 375 | 533 | 550 | 1,886 | 1,360 |
Net cash provided by (used in) investing activities | ||||||||||
-745 | -1,118 | -3,041 | -891 | -1,140 | -173 | -340 | -92 | 170 | 381 | -1,217 |
Cash flows from financing activities | ||||||||||
Principal payments under finance leases | ||||||||||
20 | 12 | 0 | 15 | 0 | 15 | 120 | 136 | - | - | - |
Increase in deferred rent | ||||||||||
0 | 139 | 0 | - | - | - | - | - | - | - | - |
Principal payments under capital leases | ||||||||||
- | - | - | - | - | - | - | - | 43 | 65 | 60 |
Principal payments under long-term debt | ||||||||||
- | - | - | - | - | - | - | - | 84 | 78 | 71 |
Net proceeds from issuance of common stock | ||||||||||
16,879 | 20,363 | 20,347 | 22,978 | 6,506 | 16,114 | 11,642 | 14,624 | 21,506 | 22,346 | 50,550 |
Net cash provided by financing activities | ||||||||||
16,859 | 20,490 | 20,347 | 22,963 | 6,506 | 16,099 | 11,522 | 14,488 | 21,379 | 22,203 | 50,419 |
Change in cash and cash equivalents, and restricted cash | ||||||||||
-7,929 | -3,200 | 1,827 | 7,251 | -461 | 2,974 | -1,475 | -6,225 | -6,338 | -23,612 | 17,492 |
Supplemental disclosure of cash flow information | ||||||||||
Cash paid for interest | ||||||||||
- | - | - | - | - | - | 12 | 30 | 46 | 62 | 68 |
Supplemental schedule of non-cash investing and financing activities | ||||||||||
Property and equipment acquired under capital leases | ||||||||||
- | - | - | - | - | - | - | - | - | 0 | 95 |
Non-cash additions to property and equipment | ||||||||||
37 | 445 | 165 | 351 | 165 | 101 | 407 | 0 | 229 | 101 | 85 |
Lease liabilities from obtaining right-of-use operating asset | ||||||||||
0 | 66 | 0 | - | - | - | - | - | - | - | - |
Issuance of common stock for exchange of warrants | ||||||||||
- | - | - | - | - | 9,869 | - | - | - | - | - |
Issuance of common stock for commitment fee | ||||||||||
- | - | - | 721 | 0 | 0 | - | - | - | - | - |
Exchange of warrants | ||||||||||
- | - | - | - | - | - | 536 | - | - | - | - |
Issuance of common stock for exchange of warrants | ||||||||||
- | - | - | - | - | - | - | 0 | - | - | - |
Issuance of common stock for commitment fee | ||||||||||
535 | 0 | - | - | - | - | - | - | - | - | - |
Issuance of common stock for payment of intellectual property | ||||||||||
- | - | - | - | - | - | - | - | - | 1,700 | 0 |