NET INCOME/ (LOSS) PER COMMON SHARE (Calculation of Net Income per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Net income	$ 44,642	$ 29,383	$ 40,291	$ 87,976
Distributed and undistributed earnings allocated to participating securities	373	186	317	570
Net income attributable to common shareholders	$ 44,269	$ 29,197	$ 39,974	$ 87,406
Total weighted average outstanding shares (in shares)	47,415,000	35,850,000	43,261,000	35,829,000
Less: weighted average participating securities (in shares)	397,000	228,000	355,000	237,000
Basic weighted average common shares (in shares)	47,018,000	35,622,000	42,906,000	35,592,000
Dilutive weighted average common stock equivalents (in shares)	157,000	50,000	165,000	50,000
Diluted weighted average common shares (in shares)	47,175,000	35,672,000	43,071,000	35,642,000
Basic net income per common share (in dollars per share)	$ 0.94	$ 0.82	$ 0.93	$ 2.46
Diluted net income per common share (in dollars per share)	$ 0.94	$ 0.82	$ 0.93	$ 2.45
Anti-dilutive shares (in shares)	37,000	8,000	22,000	10,000