Consolidated Statements of Operations - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Feb. 28, 2023 |
Nov. 30, 2022 |
Aug. 31, 2022 |
Feb. 28, 2022 |
Nov. 30, 2021 |
Aug. 31, 2021 |
Feb. 28, 2021 |
Nov. 30, 2020 |
Nov. 30, 2021 |
Nov. 30, 2020 |
Feb. 28, 2023 |
Feb. 28, 2022 |
Feb. 28, 2021 |
May 31, 2022 |
May 31, 2021 |
May 31, 2020 |
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| Consolidated Statements of Operations | ||||||||||||||||||||||||
| Revenue | $ 266 | [1] | $ 266 | $ 0 | ||||||||||||||||||||
| Cost of goods sold | 53 | [1] | 53 | |||||||||||||||||||||
| Gross profit | 213 | [1] | 213 | |||||||||||||||||||||
| Operating expenses: | ||||||||||||||||||||||||
| General and administrative | $ 2,971 | $ 10,140 | [1] | $ 14,347 | 33,960 | [1] | 44,303 | 34,320 | ||||||||||||||||
| Research and development | 938 | 3,569 | [1] | 1,651 | 23,036 | [1] | 27,043 | 53,403 | ||||||||||||||||
| Amortization and depreciation | 12 | 129 | [1] | 165 | 657 | [1] | 781 | 1,797 | ||||||||||||||||
| Intangible asset impairment charge | $ 10,000 | 0 | 10,049 | $ 0 | ||||||||||||||||||||
| Inventory charge | $ 2,700 | 5,559 | [1] | 20,633 | 8,916 | [1] | 73,490 | 5,027 | ||||||||||||||||
| Total operating expenses | 3,921 | 19,397 | [1] | 36,796 | 66,569 | [1] | 145,617 | 104,596 | ||||||||||||||||
| Operating loss | (3,921) | (19,397) | [1] | (36,796) | (66,356) | [1] | (145,404) | (104,596) | ||||||||||||||||
| Interest and other expenses: | ||||||||||||||||||||||||
| Interest on convertible notes | (1,142) | (1,187) | [1] | (3,447) | (4,299) | [1] | (5,417) | (4,387) | ||||||||||||||||
| Amortization of discount on convertible notes | (565) | (637) | [1] | (1,721) | (2,382) | [1] | (2,958) | (3,591) | ||||||||||||||||
| Amortization of debt issuance costs | (17) | (19) | [1] | (51) | (70) | [1] | (87) | (65) | ||||||||||||||||
| Loss on induced conversion | (2,018) | $ (638) | (12,066) | [1] | $ (6,785) | [1] | $ (18,530) | [1] | (2,656) | (37,381) | [1] | (37,381) | (39,131) | |||||||||||
| Finance charges | (5,884) | (7,025) | [1] | (7,761) | (8,084) | [1] | (9,029) | (145) | ||||||||||||||||
| Inducement interest expense | (954) | [1] | (528) | (5,360) | $ (4,217) | $ (7,562) | (6,186) | [1] | $ (12,922) | (6,691) | (13,922) | |||||||||||||
| Legal settlement | (1,941) | [1] | (3,853) | (10,628) | ||||||||||||||||||||
| Loss on derivatives | (155) | (8,756) | ||||||||||||||||||||||
| Total interest and other expenses | (9,781) | (21,888) | [1] | (24,392) | (60,343) | [1] | (65,416) | (71,869) | ||||||||||||||||
| Loss before income taxes | (13,702) | (41,285) | [1] | (40,077) | (45,337) | (37,581) | (37,980) | $ (85,414) | (68,812) | (61,188) | (126,699) | [1] | (106,393) | (210,820) | (176,465) | |||||||||
| Income tax benefit | 0 | 0 | [1] | 0 | 0 | [1] | 0 | 0 | ||||||||||||||||
| Net loss | $ (13,702) | $ (26,495) | $ (20,991) | $ (41,285) | [1],[2] | $ (40,077) | [1] | $ (45,337) | [1] | $ (37,581) | $ (37,980) | $ (85,414) | $ (68,812) | $ (61,188) | $ (126,699) | [1],[2] | $ (106,393) | $ (210,820) | $ (176,465) | |||||
| Weighted average common shares outstanding, Basic | 832,215,000 | 695,614,000 | [1],[2] | 810,986,000 | 663,373,000 | [1],[2] | 676,900 | 587,590 | ||||||||||||||||
| Weighted average common shares outstanding, Diluted | 832,215,000 | 695,614,000 | 810,986,000 | 663,373,000 | 676,900 | 587,590 | ||||||||||||||||||
| Loss per share, Basic | $ (0.02) | $ (0.06) | [1],[2] | $ (0.06) | $ (0.07) | $ (0.07) | $ (0.07) | $ (0.13) | $ (0.12) | $ (0.08) | $ (0.19) | [1],[2] | $ (0.18) | $ (0.31) | $ (0.30) | |||||||||
| Loss per share, Diluted | $ (0.02) | $ (0.06) | $ (0.06) | $ (0.07) | $ (0.07) | $ (0.07) | $ (0.13) | $ (0.12) | $ (0.08) | $ (0.19) | $ (0.18) | $ (0.31) | $ (0.30) | |||||||||||
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- Definition Finance charges related to interest expense. No definition available.
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- Definition The amount of gain (loss) incurred on derivatives. No definition available.
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- Definition The amount of loss on induced conversion of debt. No definition available.
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- Definition Amount of non-operating legal settlement expense. No definition available.
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- Definition Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of amortization expense attributable to debt issuance costs. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The aggregate cost of goods produced and sold and services rendered during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Total costs of sales and operating expenses for the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Consideration given by issuer of convertible debt to provide an incentive for debt holders to convert the debt to equity securities. The expense is equal to the fair value of all securities and other consideration transferred in the transaction in excess of the fair value of securities issuable pursuant to the original conversion terms. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Interest and debt related expenses associated with nonoperating financing activities of the entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings, excluding amortization of debt discount (premium) and financing costs. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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