Capital Transactions -Additional Information (Detail)			3 Months Ended		9 Months Ended
	Nov. 01, 2021 USD ($)	Mar. 07, 2018 USD ($)	Sep. 30, 2022 USD ($) $ / shares	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) classOfStock $ / shares shares	Sep. 30, 2021 USD ($) shares	Dec. 31, 2021 USD ($)
Investment Company, Capital Share Transactions [Line Items]
Number of classes of stock | classOfStock					4
Authorized amount per quarter (in percent)					2.50%
Authorized amount per year (in percent)					10.00%
Repurchase of common shares pursuant to share repurchase program			$ 2,127,000	$ 694,000	$ 18,179,000	$ 2,782,000
Amount of share requested to be repurchased in excess of proceeds received from its distribution reinvestment plan					13,300,000	600,000
Payable for shares repurchased			$ 2,127,000	$ 694,000	2,127,000	$ 694,000	$ 509,000
Stock converted (in shares) | shares						0
Class A
Investment Company, Capital Share Transactions [Line Items]
Repurchase of common shares pursuant to share repurchase program					$ 735,000	$ 527,000
Conversion of stock (in shares) | shares					40,441	0
Conversion rate (as a percent)					100.00%
Class T
Investment Company, Capital Share Transactions [Line Items]
Repurchase of common shares pursuant to share repurchase program					$ 334,000	$ 493,000
Stock converted (in shares) | shares					(40,513)
Class D
Investment Company, Capital Share Transactions [Line Items]
Repurchase of common shares pursuant to share repurchase program					$ 507,000	147,000
Class I
Investment Company, Capital Share Transactions [Line Items]
Repurchase of common shares pursuant to share repurchase program					$ 6,746,000	$ 1,050,000
Public Offering
Investment Company, Capital Share Transactions [Line Items]
Shares offered		$ 1,000,000,000
Number of classes of stock | classOfStock					4
Sale of stock offering, minimum requirement		5,000
Public Offering | Class A
Investment Company, Capital Share Transactions [Line Items]
Share price (usd per share) | $ / shares			$ 34.60		$ 34.60
Public Offering | Class T
Investment Company, Capital Share Transactions [Line Items]
Share price (usd per share) | $ / shares			33.18		33.18
Public Offering | Class D
Investment Company, Capital Share Transactions [Line Items]
Share price (usd per share) | $ / shares			31.27		31.27
Public Offering | Class I
Investment Company, Capital Share Transactions [Line Items]
Share price (usd per share) | $ / shares			$ 32.13		$ 32.13
Distribution Reinvestment Plan
Investment Company, Capital Share Transactions [Line Items]
Shares offered	$ 100,000,000	$ 100,000,000			$ 100,000,000