CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Equity:
Sales-type lease, allowance	$ 172,000	$ 93,000
Preferred shares, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred shares, authorized shares (in shares)	100,000,000	100,000,000
Series C Cumulative Convertible Preferred, liquidation preference	$ 96,770,000	$ 96,770,000
Series C Cumulative Convertible Preferred, shares issued (in shares)	1,935,400	1,935,400
Series C Cumulative Convertible Preferred, shares outstanding (in shares)	1,935,400	1,935,400
Common shares, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common shares, authorized shares (in shares)	600,000,000	600,000,000
Common shares, shares issued (in shares)	292,557,721	291,719,310
Common shares, outstanding (in shares)	292,557,721	291,719,310

Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Value of the difference between preference in liquidation and the par or stated values of the preferred shares.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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Amount of allowance for credit loss on net investment in sales-type lease.

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