Stock-Based Compensation Plans and Employee Benefits - Activities for Unvested Restricted Stock Awards (Detail) - Restricted Stock [Member] shares in Thousands	12 Months Ended
	Dec. 31, 2024 $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of awards unvested, beginning balance | shares	352
Number of awards, Granted | shares	153
Number of awards, Vested | shares	(125)
Number of awards, Cancelled | shares	(149)	[1]
Number of awards unvested, ending balance | shares	231
Weighted-Average Grant Date Fair Value unvested, beginning balance | $ / shares	$ 13.33
Weighted-Average Grant Date Fair Value, Granted | $ / shares	16.31
Weighted-Average Grant Date Fair Value, Vested | $ / shares	12.24
Weighted-Average Grant Date Fair Value, Cancelled | $ / shares	15.04	[1]
Weighted-Average Grant Date Fair Value unvested, ending balance | $ / shares	$ 12.16

[1] Includes RSU awards held by employees that were transferred to Curbline Properties as part of the spin-off, which RSUs were adjusted into RSU awards payable in common shares of Curbline Properties under its equity and incentive compensation plan (such that they no longer hold RSU awards payable in Company common shares).