Schedule of Calculation of Numerator and Denominator in Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income attributable to common stockholders, Basic	$ 22,186		$ 48,578		$ 54,243	$ 97,918
Net income attributable to common stockholders, Diluted	22,186		48,578		54,243	97,918
Net income attributable to non-controlling interest, Diluted					1,181
Diluted net income attributable to common stockholders	$ 22,186	$ 33,238	$ 48,578	$ 49,340	$ 55,424	$ 97,918
Weighted average common shares outstanding, Basic	119,630		119,080		119,483	119,026
Weighted average common shares outstanding, Basic	119,630		119,080		119,483	119,026
Non-controlling interest – Operating Partnership Units	1,342				1,342
Weighted average shares and assumed conversions	120,974		119,262		120,850	119,181
BASIC EARNINGS PER SHARE	$ 0.19		$ 0.41		$ 0.45	$ 0.82
DILUTED EARNINGS PER SHARE	$ 0.18		$ 0.41		$ 0.45	$ 0.82
Stock options
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Effect of dilutive securities			51			43
Restricted stock based awards
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Effect of dilutive securities	2		131		25	112