Equity - Share-based Awards Expensed & Capitalized Amounts (Detail) - Amended 2013 Incentive Award Plan - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expensed share-based compensation	$ 3,102	$ 2,668	$ 10,381	$ 7,956
Capitalized share-based compensation	52	48	165	124
Total share-based compensation	3,154	$ 2,716	10,546	$ 8,080
Unrecognized compensation expense related to non-vested shares	$ 17,200		$ 17,200
Weighted average remaining vesting period			26 months

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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