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Note 17 - Subsequent Event (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended
	Nov. 12, 2021	Oct. 31, 2021	Oct. 31, 2020
Proceeds from Issuance of Preferred Stock and Preference Stock		$ 5,145	$ 0
Subsequent Event [Member] | Underwriting Agreement [Member]
Proceeds from Issuance of Preferred Stock and Preference Stock	$ 9,500
Preferred Stock, Dividend Rate, Percentage	9.00%
Preferred Stock, Liquidation Preference Per Share (in dollars per share)	$ 25.00
Preferred Stock, Liquidation Preference Per Share, Per Annum (in dollars per share)	$ 2.25
Subsequent Event [Member] | Underwriting Agreement [Member] | Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares)	432,000

X

- Definition

Represents liquidation preference per share per annum for preferred stock.

+ References

No definition available.

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X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644

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X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
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X

- Definition

Proceeds from issuance of capital stock which provides for a specific dividend that is paid to the shareholders before any dividends to common stockholders and which takes precedence over common stockholders in the event of liquidation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
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- Definition

Number of new stock issued during the period.

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