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Stockholders' Equity - Additional Information (Details)

3 Months Ended

9 Months Ended

12 Months Ended

Mar. 08, 2022

USD ($)

Aug. 26, 2021

Mar. 11, 2021

USD ($)

Sep. 30, 2022

shares

Jun. 30, 2022

USD ($)

Mar. 31, 2022

USD ($)

Sep. 30, 2021

USD ($)

shares

Jun. 30, 2021

USD ($)

Sep. 30, 2022

USD ($)

shares

Sep. 30, 2021

USD ($)

shares

Dec. 31, 2021

shares

Termination date of stock repurchase program

Mar. 31, 2023

Mar. 31, 2022

Common stock issued under dividend reinvestment plan | shares

9,057

8,872

38,835

18,868

Shares outstanding at end of period | shares

9,608,913

^[1],[2],[3]

9,123,275

^[1],[2],[3]

9,608,913

^[1],[2],[3]

9,123,275

^[1],[2],[3]

9,699,695

Reverse stock split

0.10

0.10

0.10

0.10

0.10

0.10

Stock repurchases, value

$ 2,459,000

$ 545,000

$ 1,447,000

$ 380,000

$ 3,004,000

^[1]

$ 1,827,000

^[1]

4.875% Notes Due 2026

Interest Rate

4.875%

4.875%

Stock Repurchase Program

Stock repurchase program, authorized amount

$ 10,000,000

Period of stock repurchase program

1 year

Stock repurchases, shares | shares

59,659

75,377

Stock repurchases, value

$ 1,400,000

$ 1,800,000

Renewed Stock Repurchase Program

Stock repurchase program, authorized amount

$ 10,000,000

Period of stock repurchase program

1 year

Stock repurchases, shares | shares

0

129,617

Stock repurchases, value

$ 3,000,000.0

[1]	Refer to Note 9 "Stockholders' Equity" for additional information on changes in components of Stockholders' Equity
[2]	The Company completed a Reverse Stock Split of 10 to 1 effective August 26, 2021, the common shares and net asset value per common share have been adjusted retroactively to reflect the split for all periods presented.
[3]	Totals may not sum due to rounding.

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

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

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