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Represents the aggregate offering price for preferred stock.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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

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Aggregate dividends declared during the period for each share of preferred stock outstanding.

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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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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.

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The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

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Number of new stock issued during the period.

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Number of shares that have been repurchased and retired during the period.

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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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Note 4 - Shareholders' Equity and Preferred Stock (Details Textual) - USD ($)	2 Months Ended	3 Months Ended						9 Months Ended
	Jul. 31, 2021	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023	Jul. 31, 2024	Feb. 29, 2024	Dec. 29, 2023	Aug. 10, 2022	Nov. 30, 2021
Stock Repurchased and Retired During Period, Shares (in shares)		11,193			285,906			78,429	463,707
Stock Repurchased and Retired During Period, Value		$ 300,000			$ 9,400,000			$ 2,100,000	$ 14,300,000
Proceeds from Issuance of Senior Long-Term Debt								124,076,000	0
Senior Notes 2026 [Member]
Debt Instrument, Interest Rate, Stated Percentage														6.125%
Debt Instrument, Face Amount														$ 150,000,000
Senior Notes 2029 [Member]
Debt Instrument, Interest Rate, Stated Percentage										9.25%
Debt Instrument, Face Amount										$ 60,000,000	$ 57,200,000
Maximum [Member]
Common Stock Aggregate Offering Price												$ 50,000,000
Public Offering [Member] \| Senior Notes 2026 [Member]
Debt Instrument, Interest Rate, Stated Percentage													6.125%
Proceeds from Issuance of Senior Long-Term Debt		0			$ 0			0	$ 0
Debt Instrument, Face Amount		13,500,000						$ 13,500,000
Public Offering [Member] \| Senior Notes 2029 [Member]
Stock Issued During Period, Shares, New Issues (in shares)								0
Debt Instrument, Interest Rate, Stated Percentage													9.25%
Proceeds from Issuance of Senior Long-Term Debt		$ 13,400,000						$ 13,400,000
Series B Preferred Stock [Member]
Stock Repurchased and Retired During Period, Shares (in shares)		0			0			0	1,806
Stock Repurchased and Retired During Period, Value					$ 0				$ 29,000
Preferred Stock, Dividends Per Share, Declared (in dollars per share)		$ 0.48	$ 0.48	$ 0.48	$ 0.48	$ 0.48	$ 0.48
Series B Preferred Stock [Member] \| Maximum [Member]
Preferred Stock, Aggregate Offering Price													$ 100,000,000
Series B Preferred Stock [Member] \| O2021A Dividends [Member]
Preferred Stock, Dividends Per Share, Declared (in dollars per share)	$ 1.90625
Series B Preferred Stock [Member] \| Public Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)	3,188,533	0			300			44,143	53,727
Preferred Stock, Dividend Rate, Percentage	7.625%
Preferred Stock, Liquidation Preference Per Share (in dollars per share)	$ 25
Proceeds from Issuance of Preferred Stock and Preference Stock	$ 76,500,000	$ 0			$ 0			$ 1,100,000	$ 1,100,000
Common Shares [Member] \| Public Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)								0