| Dec'19 | Dec'18 | Dec'17 | Dec'16 | Dec'15 | Dec'14 | Dec'13 | Dec'12 | Dec'11 | Dec'10 |
|---|---|---|---|---|---|---|---|---|---|
Cash flows from operating activities: | |||||||||
Net cash used in operating activities from continuing operations | |||||||||
- | - | - | - | -9,935 | -18,459 | -27,878 | -36,641 | -66,604 | -27,845 |
Net cash used in operating activities | |||||||||
-4,395 | -5,711 | -1,630 | -6,205 | - | - | - | - | - | - |
Cash flows from investing activities: | |||||||||
Purchase of available-for-sale investments | |||||||||
- | - | - | - | - | - | - | - | - | 6,003 |
Sale of available-for-sale investments | |||||||||
- | - | - | - | - | - | 198 | 49 | 1,233 | 6,441 |
Cash received net of cash paid in ECU merger | |||||||||
- | - | - | - | - | - | - | - | 5,614 | - |
Convertible note issued to ECU | |||||||||
- | - | - | - | - | - | - | - | 15,713 | - |
Proceeds from sale of assets | |||||||||
3,144 | 5,097 | 762 | 1,167 | 789 | 982 | 4,217 | 5,061 | 505 | 583 |
Proceeds from sale of trading securities | |||||||||
113 | - | - | - | - | - | - | - | - | - |
Acquisitions of property, plant and equipment | |||||||||
38 | 152 | 81 | 50 | 44 | 500 | 1,797 | 9,620 | 8,490 | 4,213 |
Net cash from investing activities | |||||||||
- | - | - | - | 745 | 482 | 2,618 | -4,510 | -16,851 | -3,192 |
Net cash from investing activities | |||||||||
3,219 | 4,945 | 681 | 1,117 | - | - | - | - | - | - |
Cash flows from financing activities: | |||||||||
Proceeds from issuance of common stock, net of issuance costs | |||||||||
2,476 | 809 | 1,611 | 3,599 | - | 7,410 | - | 36,908 | 30,674 | 143,457 |
Proceeds from the issuance of convertible note | |||||||||
- | - | - | - | 5,000 | - | - | - | - | - |
Convertible note costs | |||||||||
- | - | - | - | 312 | - | - | - | - | - |
Payment of notes and long term debt | |||||||||
- | - | - | - | - | - | - | - | 15,511 | - |
Payment of customer advance | |||||||||
- | - | - | - | - | - | - | - | 4,049 | - |
Net cash from financing activities | |||||||||
- | - | - | - | 4,688 | 7,410 | - | 36,908 | 11,114 | 143,457 |
Net decrease in cash and cash equivalents | |||||||||
- | - | - | - | -4,502 | -10,567 | -25,260 | -4,243 | -72,341 | 112,420 |
Net cash from financing activities | |||||||||
2,476 | 809 | 1,611 | 3,599 | - | - | - | - | - | - |
Net increase in cash and cash equivalents | |||||||||
1,300 | 43 | - | - | - | - | - | - | - | - |
Net increase in cash and cash equivalents | |||||||||
- | - | 662 | -1,489 | - | - | - | - | - | - |
Interest paid, net of amounts capitalized | |||||||||
- | - | - | - | - | - | - | - | 885 | - |
Income taxes paid | |||||||||
- | - | - | - | - | - | - | - | - | 1,459 |