Equity - Vesting Schedule of the Nonvested Shares of Restricted Stock Outstanding (Detail) - shares				6 Months Ended
	Jan. 01, 2019	Dec. 15, 2017	Dec. 29, 2016	Jun. 30, 2020	Dec. 31, 2019
Restricted Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares (in shares)				243,039	212,545
Restricted Common Stock | July 1, 2020 - December 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares (in shares)				2,640
Restricted Common Stock | 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares (in shares)				98,773
Restricted Common Stock | 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares (in shares)				67,586
Restricted Common Stock | 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares (in shares)				47,919
Restricted Common Stock | 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares (in shares)				26,121
LTIP Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares (in shares)				292,751	298,412
LTIP Units | July 1, 2020 - December 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares (in shares)				154,422
LTIP Units | 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares (in shares)				90,031
LTIP Units | 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares (in shares)				45,740
LTIP Units | 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares (in shares)				2,558
LTIP Units | 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares (in shares)				0
Performance Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares (in shares)				687,761	687,761
Performance period				3 years
Performance Units | July 1, 2020 - December 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares (in shares)				188,250
Performance Units | 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares (in shares)				204,517
Performance Units | 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares (in shares)				294,994
Performance Units | 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares (in shares)				0
Performance Units | 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares (in shares)				0
Executive Officer | Amended 2013 Incentive Award Plan | Performance Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period	3 years	3 years	3 years