Equity and dividends (Additional Information) (Details) - USD ($)			2 Months Ended	12 Months Ended
	Feb. 12, 2021	Dec. 08, 2020	Feb. 17, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Dividends Payable [Line Items]
Preferred shares issued				0
Common stock consideration fair value				$ 1,459,000
Unrecognized share based continuing employment costs, weighted average period for recognition				2 years
Stock repurchased during period, shares				1,525,312	1,223,674	0
Stock repurchased during period, value				$ 53,170,000	$ 42,012,000
Dividends declared (usd per share)	$ 0.22
Dividends payable date				Mar. 05, 2021
Dividends, date of record				Feb. 12, 2021
Dividends, common stock	$ 24,180,000
Gain (Loss) from intra-entity foreign currency transactions				$ 10,826,000	$ (1,082,000)	$ 9,602,000
Rouse Services LLC [Member]
Dividends Payable [Line Items]
Common shares issued (in shares)		312,193
Vesting period		3 years
Common stock consideration fair value		$ 1,459,000
Fair value of common shares (per share)		$ 71.09
Unrecognized share based continuing employment costs				$ 19,933,000
Number of common shares restrictions have not yet lapse				312,193
Rouse Services LLC [Member] | Subsequent Events [Member]
Dividends Payable [Line Items]
Common stock consideration fair value			$ 17,931,000
Unrecognized share based continuing employment costs			$ 17,225,000
Shares forfeited			55,510