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Stockholders' Equity - Additional Information (Details) - USD ($)				3 Months Ended					6 Months Ended
	Mar. 12, 2025	Mar. 11, 2024	Mar. 06, 2023	Jun. 30, 2025		Jun. 30, 2024		Mar. 31, 2024	Jun. 30, 2025		Jun. 30, 2024		Dec. 31, 2024
Termination date of stock repurchase program	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Common stock issued under dividend reinvestment plan				4,981		4,021			9,676		8,100
Shares outstanding at end of period				9,207,851	[1]	9,260,495	[1]		9,207,851	[1]	9,260,495	[1]	9,198,175
Stock repurchases, value						$ 1,553,000	[1]	$ 953,000			$ 2,506,000	[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						79,772					130,737
Stock repurchases, value						$ 1,600,000					$ 2,600,000
Renewed Stock Repurchase Program
Stock repurchase program, authorized amount		$ 10,000,000
Period of stock repurchase program		1 year
Stock repurchases, shares				0					0
2025 Stock Repurchase Program
Stock repurchase program, authorized amount	$ 10,000,000
Period of stock repurchase program	1 year
[1] Refer to Note 9 “Stockholders' Equity” for additional information on changes in components of Stockholders' Equity.

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