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Redeemable Preferred Stock - Dividends, Liquidations and Conversion Rights (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended
	Mar. 31, 2005	Jan. 31, 2022	Jan. 31, 2021	Oct. 31, 2021
Class Of Stock [Line Items]
Dividends declared		$ 800	$ 800
Series B Preferred Stock
Class Of Stock [Line Items]
Dividends, preferred stock, cash		800	800
Dividends declared		$ 800	$ 800
Preferred stock, dividend rate, percentage	5.00%
Preferred stock, liquidation preference per share		$ 1,000.00
Preferred Stock, Liquidation Preference, Value		$ 64,020		$ 64,020

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Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

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Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash.

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The percentage rate used to calculate dividend payments on preferred stock.

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The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share.

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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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-Topic 235
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