| Disposal Groups, Including Discontinued Operations [Table Text Block] |
| | | Year ended December 31, | |
| | | 2022 | | | 2021 | |
| Total revenues | | $ | 1,771 | | | $ | 2,440 | |
| Cost of goods sold | | | 1,508 | | | | 1,959 | |
| Selling, general and administrative expense | | | 9,744 | | | | 16,670 | |
| Research and development expenses | | | 1,852 | | | | 1,660 | |
| Loss from operations | | | 11,333 | | | | 17,849 | |
| Interest expense | | | 37 | | | | 98 | |
| Loss from discontinued operations before loss on disposal | | $ | 11,370 | | | $ | 17,947 | |
| | | | | | | |
| | | December 31, 2022 | | | December 31, 2021 | |
| Cash and cash equivalents | | $ | — | | | $ | — | |
| Accounts receivable, net | | | 309 | | | | 160 | |
| Inventories | | | 1,178 | | | | 1,111 | |
| Prepaid expenses and other current assets | | | 444 | | | | 577 | |
| Total current assets of discontinued operations | | | 1,931 | | | | 1,848 | |
| Property, plant and equipment, net | | | 10,261 | | | | 11,021 | |
| Operating lease right-of-use assets | | | 3,499 | | | | 4,031 | |
| Other assets | | | 176 | | | | 196 | |
| Total non-current assets of discontinued operations | | | 13,936 | | | | 15,248 | |
| Total assets of discontinued operations | | $ | 15,867 | | | $ | 17,096 | |
| | | | | | | |
| Accounts payable | | $ | 784 | | | $ | 1,204 | |
| Accrued liabilities | | | 1,720 | | | | 3,008 | |
| Operating lease liabilities, current portion | | | 1,601 | | | | 886 | |
| Note payable, current portion | | | 400 | | | | 463 | |
| Deferred revenue, current portion | | | 115 | | | | 87 | |
| Total current liabilities of discontinued operations | | | 4,620 | | | | 5,648 | |
| Operating lease liabilities, net of current portion | | | 2,959 | | | | 3,649 | |
| Deferred revenue, net of current portion | | | 1,036 | | | | 1,151 | |
| Total non-current liabilities of discontinued operations | | | 3,995 | | | | 4,800 | |
| Total liabilities of discontinued operations | | | 8,615 | | | | 10,448 | |
| Net assets of discontinued operations | | $ | 7,252 | | | $ | 6,648 | |
| | | Year Ended December 31, | |
| | | 2022 | | | | 2021 | |
| Cash flows from operating activities: | | | | | | | | | |
| Depreciation and amortization | | $ | 1,465 | | | | $ | 1,537 | |
| Stock-based compensation | | | 250 | | | | | 779 | |
| Inventory impairment charge | | | 40 | | | | | 723 | |
| Non-cash interest expense related to debt financing | | | (37 | ) | | | | (98 | ) |
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