| Dec'19 | Dec'18 | Dec'17 | Dec'16 | Dec'15 | Dec'14 | Dec'13 | Dec'12 | Dec'11 |
|---|---|---|---|---|---|---|---|---|
Cash flows from operating activities: | ||||||||
Net loss | ||||||||
-8,482 | -9,500 | - | - | - | - | - | - | - |
Net loss | ||||||||
- | - | -9,680 | -11,173 | -7,898 | -7,296 | -5,285 | -4,189 | -2,976 |
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||||
Common stock issued for services | ||||||||
14 | 242 | 342 | 194 | 157 | 222 | 252 | 175 | 1,021 |
Share based compensation | ||||||||
685 | 224 | 369 | 645 | 797 | 365 | 146 | 135 | 187 |
Depreciation and amortization | ||||||||
240 | 271 | 297 | 208 | 200 | 243 | 209 | 99 | 28 |
Abandonment and impairment of capitalized patent costs | ||||||||
733 | 322 | 0 | 1,971 | 593 | 262 | 4 | 0 | - |
Deferred Rent | ||||||||
- | - | - | -17 | -13 | 2 | -4 | 17 | 18 |
Change in operating assets and liabilities: | ||||||||
Contract assets | ||||||||
0 | -145 | 184 | - | - | - | - | - | - |
Contract assets | ||||||||
- | - | - | 0 | - | - | - | - | - |
Accounts receivable | ||||||||
- | - | -103 | 103 | 0 | - | - | - | - |
Prepaid expenses and other assets | ||||||||
-109 | 134 | -169 | 332 | 94 | -9 | 58 | -377 | -394 |
Other assets | ||||||||
- | - | - | - | - | - | - | -10 | -20 |
Accounts payable and accrued liabilities | ||||||||
-236 | 312 | 13 | 260 | 242 | -44 | 21 | 274 | 349 |
Accrued compensation and taxes | ||||||||
-15 | -266 | 428 | -440 | -245 | 768 | 418 | -86 | 99 |
Contract liabilities | ||||||||
50 | - | -115 | - | - | - | - | - | - |
Contract liabilities | ||||||||
- | - | - | 115 | 0 | - | - | - | - |
Net cash used in operating activities | ||||||||
- | - | - | - | -6,261 | -5,469 | -4,297 | -3,188 | - |
Net cash used in operating activities | ||||||||
-6,902 | -8,384 | -8,258 | -8,672 | - | - | - | - | -1,688 |
Cash flows from investing activities: | ||||||||
Acquisition of fixed assets | ||||||||
20 | 94 | 94 | 137 | 49 | 78 | 236 | 337 | 131 |
Disbursements for patents and other intangible assets | ||||||||
398 | 408 | 327 | 917 | 1,113 | 1,176 | 845 | 531 | 87 |
Maturity of short term treasury bills | ||||||||
-6,923 | 6,923 | - | - | - | - | - | - | - |
Investment in short-term treasury bills | ||||||||
- | - | 0 | - | - | - | - | - | - |
Net cash used in investing activities | ||||||||
- | - | - | - | -1,162 | -1,254 | -1,081 | -868 | - |
Net cash used in investing activities | ||||||||
6,505 | -7,425 | -421 | -1,054 | - | - | - | - | -218 |
Cash flows from financing activities: | ||||||||
Proceeds from issuance of common stock, net of offering costs | ||||||||
0 | 23,511 | 8,667 | 0 | 16,279 | 5,780 | 39 | 11,201 | 2,836 |
Proceeds from exercise of stock options | ||||||||
- | - | - | - | 284 | 100 | 0 | - | - |
Proceeds from issuance of short term promissory note | ||||||||
- | - | - | - | - | - | - | 98 | 0 |
Principal payments on promissory notes | ||||||||
- | - | - | - | - | - | - | 146 | 0 |
Net cash provided by financing activities | ||||||||
- | - | - | - | 16,563 | 5,880 | 39 | 11,153 | - |
Net cash provided by financing activities | ||||||||
0 | 23,511 | 8,667 | 0 | - | - | - | - | 2,836 |
Net used in cash and cash equivalents | ||||||||
-397 | 7,702 | - | - | - | - | - | - | - |
Net increase (decrease) in cash and cash equivalents | ||||||||
- | - | -12 | -9,726 | 9,140 | -843 | -5,339 | 7,097 | 930 |
Cash paid during the period for interest | ||||||||
- | - | - | - | - | - | - | 1 | 0 |