Subsequent Events - Additional Information (Detail) - USD ($) $ in Thousands			6 Months Ended
	Jul. 30, 2021	Nov. 29, 2017	Jul. 17, 2021	Jan. 02, 2021
Subsequent Event [Line Items]
Aggregate principal amount			$ 900,000	$ 800,000
Unsecured Credit Facility
Subsequent Event [Line Items]
Line of credit facility, expiration date			Nov. 29, 2022
Unsecured Credit Facility | Base Rate Loans | Minimum
Subsequent Event [Line Items]
Basis spread on variable rate		0.00%
Unsecured Credit Facility | Base Rate Loans | Maximum
Subsequent Event [Line Items]
Basis spread on variable rate		0.575%
Unsecured Credit Facility | Eurodollar Loans | Minimum
Subsequent Event [Line Items]
Basis spread on variable rate		0.575%
Unsecured Credit Facility | Eurodollar Loans | Maximum
Subsequent Event [Line Items]
Basis spread on variable rate		1.575%
Unsecured Credit Facility | Federal Funds Rate | Minimum
Subsequent Event [Line Items]
Basis spread on variable rate		0.05%
Unsecured Credit Facility | Federal Funds Rate | Maximum
Subsequent Event [Line Items]
Basis spread on variable rate		0.30%
Subsequent Events | Unsecured Credit Facility
Subsequent Event [Line Items]
Line of credit facility, expiration date	Jul. 30, 2026
Subsequent Events | Unsecured Credit Facility | Base Rate Loans | Minimum
Subsequent Event [Line Items]
Basis spread on variable rate	0.00%
Subsequent Events | Unsecured Credit Facility | Base Rate Loans | Maximum
Subsequent Event [Line Items]
Basis spread on variable rate	0.525%
Subsequent Events | Unsecured Credit Facility | Eurodollar Loans | Minimum
Subsequent Event [Line Items]
Basis spread on variable rate	0.815%
Subsequent Events | Unsecured Credit Facility | Eurodollar Loans | Maximum
Subsequent Event [Line Items]
Basis spread on variable rate	1.525%
Subsequent Events | Unsecured Credit Facility | Federal Funds Rate | Minimum
Subsequent Event [Line Items]
Basis spread on variable rate	0.06%
Subsequent Events | Unsecured Credit Facility | Federal Funds Rate | Maximum
Subsequent Event [Line Items]
Basis spread on variable rate	0.225%
Subsequent Events | Senior Unsecured Revolving Credit Facility
Subsequent Event [Line Items]
Aggregate principal amount	$ 500,000