Subsequent Events - Gross Proceeds (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	6 Months Ended
	Aug. 11, 2022	Jun. 30, 2022	Jun. 30, 2021	Aug. 10, 2022	Jul. 28, 2022
Subsequent Event [Line Items]
Shares (in shares)		2,717,000	2,342,000
Net Proceeds to Company		$ 85,242	$ 70,500
Average Net Proceeds Per Share (in dollars per share)		$ 31.36	$ 30.11
Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)		2,611,000	2,286,000
Gross Proceeds		$ 83,097	$ 69,681
Sales Load		(1,171)	(826)
Net Proceeds to Company		$ 81,926	$ 68,855
Class A
Subsequent Event [Line Items]
Shares (in shares)		301,000	210,000
Net Proceeds to Company		$ 9,371	$ 6,230
Average Net Proceeds Per Share (in dollars per share)		$ 31.15	$ 29.73
Class A | Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)		276,000	189,000
Gross Proceeds		$ 9,250	$ 6,053
Sales Load		(659)	(446)
Net Proceeds to Company		$ 8,591	$ 5,607
Class T
Subsequent Event [Line Items]
Shares (in shares)		359,000	273,000
Net Proceeds to Company		$ 11,164	$ 8,139
Average Net Proceeds Per Share (in dollars per share)		$ 31.14	$ 29.77
Class T | Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)		342,000	266,000
Gross Proceeds		$ 11,154	$ 8,304
Sales Load		(512)	(380)
Net Proceeds to Company		$ 10,642	$ 7,924
Class D
Subsequent Event [Line Items]
Shares (in shares)		371,000	175,000
Net Proceeds to Company		$ 11,445	$ 5,155
Average Net Proceeds Per Share (in dollars per share)		$ 30.78	$ 29.52
Class D | Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)		360,000	169,000
Gross Proceeds		$ 11,093	$ 4,996
Sales Load		0	0
Net Proceeds to Company		$ 11,093	$ 4,996
Class I
Subsequent Event [Line Items]
Shares (in shares)		1,686,000	1,684,000
Net Proceeds to Company		$ 53,262	$ 50,976
Average Net Proceeds Per Share (in dollars per share)		$ 31.57	$ 30.27
Class I | Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)		1,633,000	1,662,000
Gross Proceeds		$ 51,600	$ 50,328
Sales Load		0	0
Net Proceeds to Company		$ 51,600	$ 50,328
Subsequent Event
Subsequent Event [Line Items]
Shares (in shares)	431,000
Net Proceeds to Company	$ 13,618
Average Net Proceeds Per Share (in dollars per share)				$ 31.62
Subsequent Event | Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)	391,000
Gross Proceeds	$ 12,679
Sales Load	(303)
Net Proceeds to Company	$ 12,376
Subsequent Event | Distribution Reinvestment Plan
Subsequent Event [Line Items]
Shares (in shares)	40,000
Gross Proceeds	$ 1,242
Subsequent Event | Class A
Subsequent Event [Line Items]
Shares (in shares)	94,000
Net Proceeds to Company	$ 2,955
Average Net Proceeds Per Share (in dollars per share)				31.46	$ 34.38
Subsequent Event | Class A | Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)	86,000
Gross Proceeds	$ 2,923
Sales Load	(212)
Net Proceeds to Company	$ 2,711
Subsequent Event | Class A | Distribution Reinvestment Plan
Subsequent Event [Line Items]
Shares (in shares)	8,000
Gross Proceeds	$ 244
Subsequent Event | Class T
Subsequent Event [Line Items]
Shares (in shares)	65,000
Net Proceeds to Company	$ 2,039
Average Net Proceeds Per Share (in dollars per share)				31.46	33.04
Subsequent Event | Class T | Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)	59,000
Gross Proceeds	$ 1,933
Sales Load	(91)
Net Proceeds to Company	$ 1,842
Subsequent Event | Class T | Distribution Reinvestment Plan
Subsequent Event [Line Items]
Shares (in shares)	6,000
Gross Proceeds	$ 197
Subsequent Event | Class D
Subsequent Event [Line Items]
Shares (in shares)	60,000
Net Proceeds to Company	$ 1,865
Average Net Proceeds Per Share (in dollars per share)				31.14	31.15
Subsequent Event | Class D | Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)	55,000
Gross Proceeds	$ 1,719
Sales Load	0
Net Proceeds to Company	$ 1,719
Subsequent Event | Class D | Distribution Reinvestment Plan
Subsequent Event [Line Items]
Shares (in shares)	5,000
Gross Proceeds	$ 146
Subsequent Event | Class I
Subsequent Event [Line Items]
Shares (in shares)	212,000
Net Proceeds to Company	$ 6,759
Average Net Proceeds Per Share (in dollars per share)				$ 31.89	$ 31.89
Subsequent Event | Class I | Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)	191,000
Gross Proceeds	$ 6,104
Sales Load	0
Net Proceeds to Company	$ 6,104
Subsequent Event | Class I | Distribution Reinvestment Plan
Subsequent Event [Line Items]
Shares (in shares)	21,000
Gross Proceeds	$ 655