Stock Transactions and Unit Redemptions - Gross Unit Redemptions and Share Repurchases of Class A Common Stock (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended			3 Months Ended
	Mar. 31, 2023	Feb. 28, 2023	Jan. 31, 2023	Mar. 31, 2023	Mar. 31, 2022
Class of Stock [Line Items]
Redemptions (in shares)				23,000	43,000
Repurchases (in shares)	846,000	0	0	846,000	0
Total redemptions and repurchases (in shares)				869,000	43,000
Redemptions, weighted average price paid per unit or share (in dollars per share)				$ 3.90	$ 4.01
Repurchases, weighted average price paid per unit or shares (in dollars per share)	$ 4.97	$ 0	$ 0		0
Total redemptions and repurchases, weighted average price paid per unit or shares (in dollars per share)				$ 4.95	$ 4.01
Approximate Dollar Value of Units and Shares That Could Be Redeemed/ Purchased Under the Program at March 31, 2023	$ 372,115			$ 372,115	$ 191,635
Weighted-average price for redemption of limited partnership units (in dollars per share)					$ 4.30
Aggregate purchase price of Class A common stock				$ 4,208	$ 0
Class A Common Stock
Class of Stock [Line Items]
Repurchases (in shares)				845,890	0
Approximate Dollar Value of Units and Shares That Could Be Redeemed/ Purchased Under the Program at March 31, 2023	$ 372,100			$ 372,100
Common stock, shares issued (in shares)				6,900,000	3,300,000
Stock issued during period, shares, exchange of units				6,300,000	3,800,000
Stock repurchased during period (in shares)				800,000
Aggregate purchase price of Class A common stock				$ 4,200
Stock repurchased, weighted average price (in dollars per share)				$ 4.97
Limited Partnership
Class of Stock [Line Items]
Redeemed limited partnership units (in shares)					14,000
Aggregate redemption price of limited partnership units					$ 59
FPUs
Class of Stock [Line Items]
Redeemed limited partnership units (in shares)				23,000	29,000
Aggregate redemption price of limited partnership units				$ 100	$ 114
Weighted-average price for redemption of founding/working partner units (in dollars per share)				$ 3.90	$ 3.88