Subsequent Events - Gross Proceeds (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended
	May 11, 2022	Mar. 31, 2022	Mar. 31, 2021	Apr. 27, 2022
Subsequent Event [Line Items]
Shares (in shares)		1,168,000	870,000
Net Proceeds to Company		$ 36,450	$ 25,616
Average Net Proceeds Per Share (in dollars per share)		$ 31.21	$ 29.45
Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)		1,118,000	844,000
Gross Proceeds		$ 35,319	$ 25,243
Sales Load		(435)	(385)
Net Proceeds to Company		$ 34,884	$ 24,858
Class A
Subsequent Event [Line Items]
Shares (in shares)		152,000	106,000
Net Proceeds to Company		$ 4,726	$ 3,117
Average Net Proceeds Per Share (in dollars per share)		$ 31.01	$ 29.19
Class A | Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)		140,000	96,000
Gross Proceeds		$ 4,658	$ 3,040
Sales Load		(307)	(226)
Net Proceeds to Company		$ 4,351	$ 2,814
Class T
Subsequent Event [Line Items]
Shares (in shares)		93,000	112,000
Net Proceeds to Company		$ 2,869	$ 3,285
Average Net Proceeds Per Share (in dollars per share)		$ 30.85	$ 29.25
Class T | Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)		85,000	109,000
Gross Proceeds		$ 2,744	$ 3,347
Sales Load		(128)	(159)
Net Proceeds to Company		$ 2,616	$ 3,188
Class D
Subsequent Event [Line Items]
Shares (in shares)		161,000	64,000
Net Proceeds to Company		$ 4,937	$ 1,839
Average Net Proceeds Per Share (in dollars per share)		$ 30.58	$ 28.81
Class D | Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)		156,000	61,000
Gross Proceeds		$ 4,773	$ 1,763
Sales Load		0	0
Net Proceeds to Company		$ 4,773	$ 1,763
Class I
Subsequent Event [Line Items]
Shares (in shares)		762,000	588,000
Net Proceeds to Company		$ 23,918	$ 17,375
Average Net Proceeds Per Share (in dollars per share)		$ 31.37	$ 29.60
Class I | Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)		737,000	578,000
Gross Proceeds		$ 23,144	$ 17,093
Sales Load		0	0
Net Proceeds to Company		$ 23,144	$ 17,093
Subsequent Event
Subsequent Event [Line Items]
Shares (in shares)	470,000
Net Proceeds to Company	$ 14,798
Average Net Proceeds Per Share (in dollars per share)	$ 31.49
Subsequent Event | Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)	435,000
Gross Proceeds	$ 13,936
Sales Load	(240)
Net Proceeds to Company	$ 13,696
Subsequent Event | Distribution Reinvestment Plan
Subsequent Event [Line Items]
Shares (in shares)	35,000
Gross Proceeds	$ 1,102
Subsequent Event | Class A
Subsequent Event [Line Items]
Shares (in shares)	63,000
Net Proceeds to Company	$ 1,975
Average Net Proceeds Per Share (in dollars per share)	$ 31.30			$ 34.22
Subsequent Event | Class A | Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)	56,000
Gross Proceeds	$ 1,897
Sales Load	(146)
Net Proceeds to Company	$ 1,751
Subsequent Event | Class A | Distribution Reinvestment Plan
Subsequent Event [Line Items]
Shares (in shares)	7,000
Gross Proceeds	$ 224
Subsequent Event | Class T
Subsequent Event [Line Items]
Shares (in shares)	70,000
Net Proceeds to Company	$ 2,175
Average Net Proceeds Per Share (in dollars per share)	$ 31.26			32.84
Subsequent Event | Class T | Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)	64,000
Gross Proceeds	$ 2,093
Sales Load	(94)
Net Proceeds to Company	$ 1,999
Subsequent Event | Class T | Distribution Reinvestment Plan
Subsequent Event [Line Items]
Shares (in shares)	6,000
Gross Proceeds	$ 176
Subsequent Event | Class D
Subsequent Event [Line Items]
Shares (in shares)	63,000
Net Proceeds to Company	$ 1,954
Average Net Proceeds Per Share (in dollars per share)	$ 30.96			30.97
Subsequent Event | Class D | Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)	59,000
Gross Proceeds	$ 1,833
Sales Load	0
Net Proceeds to Company	$ 1,833
Subsequent Event | Class D | Distribution Reinvestment Plan
Subsequent Event [Line Items]
Shares (in shares)	4,000
Gross Proceeds	$ 121
Subsequent Event | Class I
Subsequent Event [Line Items]
Shares (in shares)	274,000
Net Proceeds to Company	$ 8,694
Average Net Proceeds Per Share (in dollars per share)	$ 31.72			$ 31.73
Subsequent Event | Class I | Proceeds from Public Offering
Subsequent Event [Line Items]
Shares (in shares)	256,000
Gross Proceeds	$ 8,113
Sales Load	0
Net Proceeds to Company	$ 8,113
Subsequent Event | Class I | Distribution Reinvestment Plan
Subsequent Event [Line Items]
Shares (in shares)	18,000
Gross Proceeds	$ 581