Shareholders' Equity - Narrative (Details) $ / shares in Units, $ in Thousands		12 Months Ended
	Jan. 11, 2024 USD ($) $ / shares	Dec. 31, 2023 USD ($) installment $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares
Subsidiary, Sale of Stock [Line Items]
Share repurchases (in shares)		17,421	13,898
Shares repurchased | $		$ 183	$ 137
Annual per share distribution (in dollars per share) | $ / shares		$ 1.40	$ 1.00
Distributions | $		$ 20,639	$ 14,636
Subsequent Event
Subsidiary, Sale of Stock [Line Items]
Distribution per Share, declared (in dollars per share) | $ / shares	$ 0.35
Annual per share distribution (in dollars per share) | $ / shares	$ 0.35
Distributions | $	$ 5,184
2021 Equity Compensation Plan | Restricted Unvested Common Shares
Subsidiary, Sale of Stock [Line Items]
Shares granted (in shares)		122,000	127,000
Number of installments | installment		5
2024		46,722
2025		43,300
2026		30,400
2027		15,999
Future compensation expense | $		$ 1,303
Future compensation expense, period of recognition		22 months
Compensation expense | $		$ 1,121	$ 1,018
Common shares available for issuance (in shares)		148,829
Officers And Certain Other Employees Compensation Arrangement | Restricted Unvested Common Shares
Subsidiary, Sale of Stock [Line Items]
Shares granted (in shares)		80,000	85,000
Grants in period | $		$ 876	$ 859
Trustee Compensation Arrangements | Restricted Unvested Common Shares
Subsidiary, Sale of Stock [Line Items]
Shares granted (in shares)		6,000	6,000
Grants in period | $		$ 387	$ 448