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Schedule of Distributions Declared (Detail) - USD ($) $ in Thousands										6 Months Ended
		Jun. 30, 2023	Jun. 01, 2023	Mar. 31, 2023	Mar. 02, 2023	Jun. 30, 2022	Jun. 02, 2022	Mar. 31, 2022	Mar. 03, 2022	Jun. 30, 2023	Jun. 30, 2022
Dividends Payable [Line Items]
Approval Date			Jun. 01, 2023		Mar. 02, 2023		Jun. 02, 2022		Mar. 03, 2022
Record Date			Jun. 23, 2023		Mar. 24, 2023		Jun. 20, 2022		Mar. 21, 2022
Payment Date			Jun. 30, 2023		Mar. 31, 2023		Jun. 30, 2022		Mar. 31, 2022
Payment of dividends						$ 3,602		$ 3,597		$ 6,764	$ 7,389
Payment of dividends		$ 3,375		$ 3,410
Unvested Shares, Net of Forfeitures
Dividends Payable [Line Items]
Approval Date	[1]									Various	Various
Record Date	[1]									Various	Various
Payment Date	[1]									Various	Various
Payment of dividends	[1]									$ (21)
Payment of dividends	[1]										$ 190
[1] Represents distributions declared on unvested shares, net of forfeitures.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482913/230-10-50-3

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1

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-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-SubTopic 405
-Topic 942
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481071/942-405-45-2

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