Temporary Equity	9 Months Ended
Temporary Equity	Feb. 28, 2025
Temporary Equity Disclosure [Abstract]
Temporary Equity	Temporary Equity Preferred Stock Series E Redeemable Preferred Stock During the nine months ended February 28, 2025, the Company closed on four offerings of the Series E Redeemable Preferred Stock (the “Series E Preferred Stock”). The Company sold total shares of 301,673 for proceeds of $6.9 million net of issuance costs of $0.6 million. The Series E Preferred Stock offering was terminated on August 9, 2024. The shares of Series E Preferred Stock have no voting or conversion rights. Holders of the Series E Preferred Stock are entitled to receive cumulative dividends at a fixed rate of 9.0% per annum. Dividends are calculated based on a 360-day year, declared and accrued monthly, and payable at the discretion of the Board of Directors out of legally available funds. Dividends must be fully paid for all past periods before any distributions can be made to common stockholders or any junior series of equity securities. During the three and nine months ended February 28, 2025, the Company declared and paid approximately $0.2 million and $0.4 million, respectively, of dividends related to Series E Preferred Stock as presented on the unaudited condensed consolidated statements of operations. The Series E Preferred Stock ranks senior to all classes of common stock and junior to all existing and future debt of the Company. Additionally, it is on parity with any future series of preferred stock with substantially identical terms but may rank junior to any future series of preferred stock if the holders of such series are entitled to rights and preferences with priority over the holders of the Series E Preferred Stock. In the event of liquidation, holders are entitled to receive $25.00 per share (the “Series E Stated Value”) plus any accrued but unpaid dividends before any distributions are made to common stockholders. The Series E Preferred Stock has no stated maturity and remains outstanding indefinitely unless redeemed or repurchased by the Company. Holders may require the Company to redeem any portion of their Series E Preferred Stock at any time for a "Settlement Amount" calculated as the Series E Stated Value plus any unpaid dividends, less a Holder Optional Redemption Fee, equal to a percentage of the Series E Stated Value based on the year when the redemption occurs as follows: 9.00% prior to the first anniversary of the respective tranche closing date (the "Original Issuance Date"); 7.00% on or after the first anniversary but prior to the second anniversary of the Original Issuance Date; 5.00% on or after the second anniversary but prior to the third anniversary of the Original Issuance Date: and 0.00% on or after the third anniversary of the Original Issuance Date. The Settlement Amount can be settled in cash or shares of common stock, subject to a share cap, which limits the total shares deliverable upon redemption to 19.99% of the common stock outstanding prior to the Series E Preferred Stock offering (25,475,751 shares, the “Share Cap”). Any portion of the Settlement Amount exceeding this cap will be settled in cash. The Company may also redeem shares of Series E Preferred Stock after the second anniversary of the original issuance date, with a minimum notice of 10 days, at the Company Optional Redemption Settlement Amount, which is equal to the Series E Stated Value per share plus any unpaid and accrued dividends. If the Company elects to pay the redemption amount in shares, then the number of shares to be delivered will be calculated as the Company Optional Redemption Settlement Amount divided by the closing price per share of the common stock on the date of the Company Optional Redemption exercise, subject to the Share Cap. Series F Convertible Preferred Stock On August 29, 2024, the Company entered into a securities purchase agreement for the private placement of 53,191 shares of Series F Convertible Preferred Stock, par value $0.001 per share (the “Series F Convertible Preferred Stock”), including 3,191 shares representing an original issue discount of 6%. The transaction closed on August 30, 2024, for total proceeds of $50.0 million, prior to fees paid to Northland Securities, Inc. for their role as placement agent in an amount equal to 3.5% of the total proceeds. The shares of Series F Convertible Preferred Stock are convertible into shares of common stock only upon the receipt of shareholder approval, which was received on November 20, 2024. Holders of the Series F Convertible Preferred Stock are entitled to cumulative dividends at an annual rate of 8.0% of the stated value of $1,000 per share (the “Series F Stated Value”), payable quarterly in arrears. Dividends are calculated based on a 360-day year, declared and accrued quarterly, and payable at the discretion of the Board of Directors out of legally available funds. Dividends must be fully paid for all past periods before any distributions can be made to common stockholders or any junior series of equity securities. During the three months ended February 28, 2025, the Company did not declare nor pay any dividends related to the Series F Convertible Preferred Stock; however, for the nine months ended February 28, 2025, the Company declared and paid approximately $0.4 million of dividends related to the Series F Convertible Preferred Stock as presented on the unaudited condensed consolidated statements of operations. The Series F Convertible Preferred Stock ranks senior to all classes of common stock and junior to all existing and future debt of the Company. In the event of liquidation, holders are entitled to receive the Series F Stated Value plus any accrued but unpaid dividends before any distributions are made to common stockholders. Series F Convertible Preferred Stock is on parity with the Series E Preferred Stock, Series E-1 Preferred Stock and any future series of preferred stock with substantially identical terms. Upon the receipt of shareholder approval on November 20, 2024, the Series F Convertible Preferred Stock votes on an as-converted basis, subject to a cap equal to the greater of (x) the conversion price then in effect or (y) $4.0638. Holders have the right to require the Company to redeem the Series F Convertible Preferred Stock under certain conditions, including a Change of Control or Trading Failure, each as defined in the Series F Convertible Preferred Stock certificate of designation. If there is a Change of Control, the redemption price is the greater of the Series F Stated Value or the amount that would have been received if the Series F Convertible Preferred Stock had been converted into common stock immediately prior to the redemption event. If there is a Trading Failure, the redemption price is the greater of the Series F Stated Value or the product of the lowest conversion price during the period beginning on the date immediately preceding the Trading Failure and ending on the date the holder delivers a Redemption Notice, multiplied by the number of shares of common stock into which the preferred stock is convertible at the then-effective conversion price. Additionally, holders have a one-time right to require the Company to redeem their shares between December 31, 2024, and January 10, 2025 in which case the redemption price is the Series F Stated Value. Further, upon receipt of shareholder approval of the conversion feature of the Series F Convertible Preferred Stock, which approval was received on November 20, 2024, if the VWAP for any 20 Trading Days during any 30 consecutive trading day period, beginning with the original issuance date of the applicable preferred stock, exceeds two hundred percent (200%) of the conversion price then in effect, the Company may, at any time cause the holder to convert all or part of the holder’s preferred stock. During the three months ended February 28, 2025, 43,000 shares of Series F Convertible Preferred Stock were converted into approximately 6.1 million shares of the Company’s common stock. During the nine months ended February 28, 2025, all 53,191 shares of Series F Convertible Preferred Stock were converted into approximately 7.6 million shares of the Company’s common stock. As of February 28, 2025, there is no outstanding Series F Convertible Preferred Stock. Series E-1 Redeemable Preferred Stock On September 23, 2024, the Company entered into a dealer manager agreement for the offering of up to 62,500 shares of Series E-1 Redeemable Preferred Stock, par value $0.001 per share (“Series E-1 Preferred Stock”), at a price per share of $1,000 (the “Series E-1 Stated Value”). During the three months ended February 28, 2025, the Company closed on four offerings of the Series E-1 Preferred Stock, in which the Company issued and sold 33,404 shares for gross proceeds of $33.4 million for a total of six offerings during the nine months ended February 28, 2025, in which the Company issued 39,763 shares for gross proceeds of $39.8 million. The Series E-1 Preferred Stock offering remains ongoing as of the date of this report. The shares of Series E-1 Preferred Stock have no voting or conversion rights. Holders of the Series E-1 Preferred Stock are entitled to receive cumulative dividends at a fixed rate of 9.0% per annum of the Series E-1 Stated Value. Dividends are calculated based on a 360-day year, declared and accrued monthly, and payable at the discretion of the Board of Directors out of legally available funds. Dividends on the shares of Series E-1 Preferred Stock must be fully paid for all past periods before any distributions can be made to common stockholders or any junior series of equity securities. During the three and nine months ended February 28, 2025, the Company declared and paid approximately $0.4 million and $0.4 million, respectively, of dividends related to the Series E-1 Preferred Stock as presented on the unaudited condensed consolidated statements of operations. The Series E-1 Preferred Stock ranks senior to all classes or series of common stock and junior to all existing and future debt of the Company. Additionally, the Series E-1 Preferred Stock is on parity with the Series E Preferred Stock, the Series F Convertible Preferred Stock and any future series of preferred stock with substantially identical terms but may rank junior to any future series of preferred stock if the holders of such series are entitled to rights and preferences with priority over the holders of the Series E-1 Preferred Stock. In the event of liquidation, holders of the Series E-1 Preferred Stock and holders of shares of any other class or series of capital stock ranking senior to or on a parity with the Series E-1 Preferred Stock, are entitled to receive an amount per share equal to the Series E-1 Stated Value plus an amount per share that is issuable as a result of any accrued but unpaid dividends before any distributions are made to common stockholders. The Series E-1 Preferred Stock has no stated maturity and remains outstanding indefinitely unless redeemed or repurchased by the Company. Holders may require the Company to redeem any portion of their Series E-1 Preferred Stock at any time for a "Settlement Amount" calculated as the Series E-1 Stated Value plus any unpaid dividends, less a Holder Optional Redemption Fee equal to a percentage of the Series E-1 Stated Value based on the year when the redemption occurs as follows: 9.00% prior to the first anniversary of the respective tranche closing date (the "Original Issuance Date"); 7.00% on or after the first anniversary but prior to the second anniversary of the Original Issuance Date; 5.00% on or after the second anniversary but prior to the third anniversary of the Original Issuance Date: and 0.00% on or after the third anniversary of the Original Issuance Date. The Settlement Amount can be settled in cash or shares of common stock at the sole option of the Company, subject to a share cap (if required by Nasdaq rules and regulations), which limits the total shares deliverable upon redemption to 19.99% of the common stock outstanding immediately prior to the Series E-1 Preferred Stock offering (25,889,470 shares, the “Share Cap”), unless approval by the Company’s stockholders is obtained to exceed the Share Cap. Any portion of the Settlement Amount exceeding this cap will be settled in cash. Holders may not redeem any shares of Series E-1 Preferred Stock for common stock prior to the first anniversary of the Original Issuance Date. The Company may also redeem shares of the Series E-1 Preferred Stock after the second anniversary of the Original Issuance Date, with a minimum notice of 10 days, at a redemption price equal to the Series E-1 Stated Value plus any accrued but unpaid dividends. If the Company elects to pay the redemption amount in shares, then the number of shares to be delivered will be calculated as the Settlement Amount divided by the closing price per share of the common stock on the last trading day prior to the date upon which notice was provided to the holder, subject to the Share Cap, if applicable.