Restatement of Quarterly Financial Information - Cash Flow (Details) - USD ($) $ in Thousands |
1 Months Ended | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 04, 2019 |
Jun. 30, 2021 |
Jun. 30, 2021 |
Dec. 31, 2020 |
Sep. 30, 2020 |
Jun. 30, 2020 |
Sep. 30, 2021 |
Sep. 30, 2020 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Mar. 31, 2022 |
Mar. 31, 2021 |
|
| Cash Flows from Operating Activities: | ||||||||||||
| Net loss | $ (4,221) | $ (1,139) | $ (9,783) | $ (6,812) | $ (15,071) | $ (15,662) | $ (22,370) | $ (20,757) | ||||
| Adjustments to reconcile net loss to net cash used in operating activities: | ||||||||||||
| Depreciation and amortization | 386 | 354 | 844 | 703 | 1,337 | 1,072 | 1,915 | 1,452 | ||||
| Amortization of financing costs and discounts | 9 | 298 | 17 | 605 | 26 | 614 | 35 | 623 | ||||
| Amortization of right-of-use assets | 93 | 94 | 449 | 192 | 552 | 289 | 657 | 378 | ||||
| Loss (gain) on debt extinguishment | $ (1,900) | (1,950) | $ 4,282 | (1,950) | (1,950) | 4,282 | (1,950) | 4,282 | ||||
| Bad debt expense (recovery) | (48) | (228) | 391 | (228) | ||||||||
| Inventory provision | 276 | (118) | 287 | 78 | 386 | 138 | 791 | 305 | ||||
| Provision for warranty expenses | 44 | 186 | 143 | 179 | 358 | 535 | 646 | 5,930 | ||||
| (Gain) loss on disposal of equipment | (1) | (1) | (1) | (1) | ||||||||
| Stock-based compensation | 305 | 210 | 638 | 429 | 973 | 678 | 1,245 | 937 | ||||
| Changes in operating assets and liabilities: | ||||||||||||
| Accounts receivable | 2,623 | (1,459) | (1,626) | (511) | (1,284) | (2,229) | (3,383) | (3,743) | ||||
| Inventories | (5,700) | 7,127 | (8,074) | 9,805 | (9,489) | 9,018 | (9,105) | 8,870 | ||||
| Prepaid expenses, other current assets and other assets | (107) | (188) | 1,327 | 946 | 509 | 899 | 164 | 653 | ||||
| Accounts payable and accrued expenses | 2,324 | (4,361) | 4,363 | (4,442) | 5,953 | (774) | 4,485 | 4,652 | ||||
| Accrued salaries and wages and long-term liabilities | (325) | (484) | (539) | (303) | (168) | (173) | (743) | 245 | ||||
| Accrued warranty reserve | (1,990) | (352) | (4,129) | (686) | (4,780) | (946) | (5,013) | (2,014) | ||||
| Deferred revenue | (2,812) | (2,985) | (1,687) | (2,333) | (370) | (3,582) | 3,229 | (2,789) | ||||
| Factory protection plan liability | 904 | 947 | 365 | 2,179 | 25 | 2,704 | 1,508 | 2,906 | ||||
| Net cash used in operating activities | (10,141) | (1,871) | (19,355) | (20) | (22,993) | (3,366) | (27,498) | 1,701 | ||||
| Cash Flows from Investing Activities: | ||||||||||||
| Expenditures for property, plant, equipment and rental assets | (1,200) | (74) | (2,623) | (1,116) | (5,748) | (1,269) | (9,924) | (3,209) | ||||
| Net cash used in investing activities | (1,200) | (74) | (2,623) | (1,116) | (5,748) | (1,269) | (9,924) | (3,209) | ||||
| Cash Flows from Financing Activities: | ||||||||||||
| Net proceeds from term note payable | 1,950 | 1,935 | 20,833 | 20,833 | ||||||||
| Repayment of notes payable and lease obligations | (106) | (216) | (353) | (434) | (590) | (655) | (685) | (691) | ||||
| Cash used in employee-stock-based transactions | (29) | (4) | (121) | (43) | (129) | (43) | (138) | (74) | ||||
| Net proceeds from issuance of common stock and warrants | $ 4,600 | 11,159 | 1,376 | 11,186 | 1,392 | 11,194 | 1,402 | 11,271 | 15,905 | |||
| Net cash provided by financing activities | 11,024 | 3,106 | 10,712 | 2,850 | 10,475 | 21,537 | 10,448 | 35,973 | ||||
| Net increase (decrease) in Cash and Cash Equivalents | (317) | 1,161 | (11,266) | 1,714 | (18,266) | 16,902 | (26,974) | 34,465 | ||||
| Cash and Cash Equivalents, Beginning of Period | 49,533 | 16,782 | $ 16,229 | 15,068 | 49,533 | 15,068 | 49,533 | 15,068 | 49,533 | 15,068 | ||
| Cash and Cash Equivalents, End of Period | 49,216 | 49,216 | 31,970 | 16,782 | 16,229 | 38,267 | 16,782 | 31,267 | 31,970 | 22,559 | 49,533 | |
| Supplemental Disclosures of Cash Flow Information: | ||||||||||||
| Interest | 5,095 | 4,287 | ||||||||||
| Income taxes | 20 | 14 | ||||||||||
| Supplemental Disclosures of Non-Cash Information: | ||||||||||||
| Acquisition of property and equipment through accounts payable | 264 | 36 | ||||||||||
| Renewal of insurance contracts financed by notes payable | 567 | 593 | ||||||||||
| Issuance of common stock for services to be received | 75 | |||||||||||
| Deemed dividend | 15 | 15 | 15 | 15 | ||||||||
| Bill and Hold | ||||||||||||
| Cash Flows from Operating Activities: | ||||||||||||
| Net loss | (1,135) | 1,631 | (1,242) | 1,402 | (1,724) | 672 | (651) | 536 | ||||
| Adjustments to reconcile net loss to net cash used in operating activities: | ||||||||||||
| Bad debt expense (recovery) | (738) | |||||||||||
| Changes in operating assets and liabilities: | ||||||||||||
| Accounts receivable | 5,901 | (3,043) | 3,141 | (3,318) | 4,965 | 383 | 3,030 | 382 | ||||
| Inventories | (2,359) | 3,481 | (1,686) | 2,726 | (3,852) | (384) | (1,843) | 168 | ||||
| Deferred revenue | (2,407) | (2,069) | (213) | (810) | 611 | (671) | 202 | (1,086) | ||||
| FPP Contracts | ||||||||||||
| Cash Flows from Operating Activities: | ||||||||||||
| Net loss | (904) | (947) | (365) | (2,179) | (25) | (2,704) | (1,508) | (2,906) | ||||
| Changes in operating assets and liabilities: | ||||||||||||
| Factory protection plan liability | 904 | 947 | 365 | 2,179 | 25 | 2,704 | 1,508 | 2,906 | ||||
| Previously Reported | ||||||||||||
| Cash Flows from Operating Activities: | ||||||||||||
| Net loss | (2,182) | (1,823) | (8,176) | (6,035) | (13,322) | (13,630) | (20,211) | (18,387) | ||||
| Adjustments to reconcile net loss to net cash used in operating activities: | ||||||||||||
| Depreciation and amortization | 386 | 354 | 844 | 703 | 1,337 | 1,072 | 1,915 | 1,452 | ||||
| Amortization of financing costs and discounts | 9 | 298 | 17 | 605 | 26 | 614 | 35 | 623 | ||||
| Amortization of right-of-use assets | 93 | 94 | 449 | 192 | 552 | 289 | 657 | 378 | ||||
| Loss (gain) on debt extinguishment | (1,950) | 4,282 | (1,950) | (1,950) | 4,282 | (1,950) | 4,282 | |||||
| Bad debt expense (recovery) | (48) | (228) | 1,129 | (228) | ||||||||
| Inventory provision | 276 | (118) | 287 | 78 | 386 | 138 | 791 | 305 | ||||
| Provision for warranty expenses | 44 | 186 | 143 | 179 | 358 | 535 | 646 | 5,930 | ||||
| (Gain) loss on disposal of equipment | (1) | (1) | (1) | (1) | ||||||||
| Stock-based compensation | 305 | 210 | 638 | 429 | 973 | 678 | 1,245 | 937 | ||||
| Changes in operating assets and liabilities: | ||||||||||||
| Accounts receivable | (3,278) | 1,584 | (4,767) | 2,807 | (6,249) | (2,612) | (6,413) | (4,125) | ||||
| Inventories | (3,341) | 3,646 | (6,388) | 7,079 | (5,637) | 9,402 | (7,262) | 8,702 | ||||
| Prepaid expenses, other current assets and other assets | (107) | (188) | 1,327 | 946 | 509 | 899 | 164 | 653 | ||||
| Accounts payable and accrued expenses | 2,324 | (4,361) | 4,363 | (4,442) | 5,953 | (774) | 4,485 | 4,652 | ||||
| Accrued salaries and wages and long-term liabilities | (325) | (484) | (539) | (303) | (168) | (173) | (743) | 245 | ||||
| Accrued warranty reserve | (1,990) | (352) | (4,129) | (686) | (4,780) | (946) | (5,013) | (2,014) | ||||
| Deferred revenue | (405) | (916) | (1,474) | (1,523) | (981) | (2,911) | 3,027 | (1,703) | ||||
| Net cash used in operating activities | (10,141) | (1,871) | (19,355) | (20) | (22,993) | (3,366) | (27,498) | 1,701 | ||||
| Cash Flows from Investing Activities: | ||||||||||||
| Expenditures for property, plant, equipment and rental assets | (1,200) | (74) | (2,623) | (1,116) | (5,748) | (1,269) | (9,924) | (3,209) | ||||
| Net cash used in investing activities | (1,200) | (74) | (2,623) | (1,116) | (5,748) | (1,269) | (9,924) | (3,209) | ||||
| Cash Flows from Financing Activities: | ||||||||||||
| Net proceeds from term note payable | 1,950 | 1,935 | 20,833 | 20,833 | ||||||||
| Repayment of notes payable and lease obligations | (106) | (216) | (353) | (434) | (590) | (655) | (685) | (691) | ||||
| Cash used in employee-stock-based transactions | (29) | (4) | (121) | (43) | (129) | (43) | (138) | (74) | ||||
| Net proceeds from issuance of common stock and warrants | 11,159 | 1,376 | 11,186 | 1,392 | 11,194 | 1,402 | 11,271 | 15,905 | ||||
| Net cash provided by financing activities | 11,024 | 3,106 | 10,712 | 2,850 | 10,475 | 21,537 | 10,448 | 35,973 | ||||
| Net increase (decrease) in Cash and Cash Equivalents | (317) | 1,161 | (11,266) | 1,714 | (18,266) | 16,902 | (26,974) | 34,465 | ||||
| Cash and Cash Equivalents, Beginning of Period | 49,533 | 16,782 | 16,229 | 15,068 | 49,533 | 15,068 | 49,533 | 15,068 | 49,533 | 15,068 | ||
| Cash and Cash Equivalents, End of Period | $ 49,216 | $ 49,216 | $ 31,970 | 16,782 | $ 16,229 | $ 38,267 | 16,782 | $ 31,267 | 31,970 | 22,559 | 49,533 | |
| Supplemental Disclosures of Cash Flow Information: | ||||||||||||
| Interest | 5,095 | 4,287 | ||||||||||
| Income taxes | 20 | 14 | ||||||||||
| Supplemental Disclosures of Non-Cash Information: | ||||||||||||
| Acquisition of property and equipment through accounts payable | 264 | 36 | ||||||||||
| Renewal of insurance contracts financed by notes payable | 567 | 593 | ||||||||||
| Issuance of common stock for services to be received | $ 75 | |||||||||||
| Deemed dividend | $ 15 | $ 15 | $ 15 | $ 15 | ||||||||