Shareholders' Equity - Additional Information (Details) - USD ($)	Mar. 31, 2021	Jun. 12, 2019	Feb. 14, 2018
Class of Stock [Line Items]
Minimum % of REIT taxable income to be paid as dividend annually	90.00%
Amended Credit Agreement
Class of Stock [Line Items]
Maximum borrowing capacity	$ 100,000,000.0
Line of Credit | Revolving Credit Facility | Amended Credit Agreement
Class of Stock [Line Items]
Maximum borrowing capacity		$ 900,000,000.0	$ 900,000,000.0
Common shares | February 2018 Stock Buyback Program
Class of Stock [Line Items]
Stock repurchase program, authorized amount			$ 200,000,000.0