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Stockholders' Equity - Additional Information (Details)

12 Months Ended

Mar. 08, 2022

USD ($)

Mar. 11, 2021

USD ($)

Dec. 31, 2022

USD ($)

shares

Dec. 31, 2021

USD ($)

shares

Dec. 31, 2020

USD ($)

shares

Dec. 31, 2019

shares

Dec. 31, 2018

shares

Termination date of stock repurchase program

Mar. 31, 2023

Mar. 31, 2022

Common stock issued under dividend reinvestment plan | shares

48,858

38,436

Shares outstanding at end of period | shares

^[2]

9,581,536

^[1]

9,699,695

^[1]

7,516,423

^[1]

4,482,968

3,732,685

Reverse stock split

0.10

Stock repurchases, value

$ 3,831,000

$ 1,827,000

$ 863,000

4.875% Notes Due 2026

Interest Rate

4.875%

Stock Repurchase Program

Stock repurchase program, authorized amount

$ 10,000,000

Period of stock repurchase program

1 year

Stock repurchases, shares | shares

167,017

75,377

Stock repurchases, value

$ 3,800,000

$ 1,800,000

Renewed Stock Repurchase Program

Stock repurchase program, authorized amount

$ 10,000,000

Period of stock repurchase program

1 year

[1]	The Company completed a Reverse Stock Split of 10 to 1 effective August 26, 2021, the common shares outstanding and net asset value per common share values have been adjusted retroactively to reflect the split for all periods presented
[2]	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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Number of shares issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity.

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Expiration date for the purchase of an entity's own shares under a stock repurchase plan, in the YYYY-MM-DD format.

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