Related Party Transactions and Arrangements - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands			2 Months Ended	12 Months Ended
	Oct. 30, 2020	Jul. 31, 2020	Mar. 31, 2017	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Winthrop Advisor and its Affiliates [Member]
Related Party Transaction [Line Items]
Fees paid to related parties				$ 1,200	$ 1,200	$ 1,300
Liquidation Value [Member] | Asset Management Fees [Member]
Related Party Transaction [Line Items]
Fees paid to related parties	$ 83,000
Liquidation Value [Member] | Advisor [Member] | Post Liquidation Date Agreement Monthly Supplemental Fee [Member]
Related Party Transaction [Line Items]
Fees paid to related parties		$ 100,000
Liquidation Value [Member] | Advisor [Member] | Post Liquidation Date Agreement Quarterly Supplemental Fee [Member]
Related Party Transaction [Line Items]
Fees paid to related parties		$ 50,000
Liquidation Value [Member] | Service Provider and Affiliates [Member]
Related Party Transaction [Line Items]
Incentive fee, percentage of excess of hurdle amount			10.00%
Hurdle amount (in dollars per share)			$ 110.00
Liquidation Value [Member] | Winthrop Advisor and its Affiliates [Member] | Asset Management Fees [Member]
Related Party Transaction [Line Items]
Asset management fees				$ 1,200	$ 1,200