Equity - Summary of Shares of Restricted Common Stock and Long-term Incentive Plan Units in Operating Partnership Awards (Detail)	3 Months Ended
	Mar. 31, 2021 $ / shares shares
Restricted Shares [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares/Units, Outstanding beginning balance | shares	89,891
Shares/Units, Vested | shares	(20,725)
Shares/Units, Granted | shares	4,462
Shares/Units, Outstanding ending balance | shares	73,628
Weighted Average Grant Date Fair Value Per Share, Outstanding beginning balance | $ / shares	$ 19.36
Weighted Average Grant Date Fair Value Per Share, Vested | $ / shares	17.12
Weighted Average Grant Date Fair Value Per Share, Granted | $ / shares	21.76
Weighted Average Grant Date Fair Value Per Share, Outstanding ending balance | $ / shares	$ 20.14
Restricted Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares/Units, Outstanding beginning balance | shares	492,180	[1]
Shares/Units, Vested | shares	(93,085)	[1]
Shares/Units, Granted | shares	277,881	[1]
Shares/Units, Outstanding ending balance | shares	676,976	[1]
Weighted Average Grant Date Fair Value Per Share, Outstanding beginning balance | $ / shares	$ 19.88
Weighted Average Grant Date Fair Value Per Share, Vested | $ / shares	18.55
Weighted Average Grant Date Fair Value Per Share, Granted | $ / shares	22.30
Weighted Average Grant Date Fair Value Per Share, Outstanding ending balance | $ / shares	$ 21.06

[1] Reflects the number of LTIP units issued to the grantee on the grant date, which may be different from the number of LTIP units actually earned in the case of performance-based LTIP units.