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, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Net income	$ 56,976	$ 44,642	$ 189,703	$ 40,291
Distributed and undistributed earnings allocated to participating securities	(354)	(373)	(1,219)	(317)
Net income attributable to common shareholders	$ 56,622	$ 44,269	$ 188,484	$ 39,974
Total weighted average outstanding shares (in shares)	47,197,000	47,415,000	47,409,000	43,261,000
Less: weighted average participating securities (in shares)	(294,000)	(397,000)	(307,000)	(355,000)
Basic weighted average common shares (in shares)	46,903,000	47,018,000	47,102,000	42,906,000
Dilutive weighted average common stock equivalents (in shares)	184,000	157,000	213,000	165,000
Diluted weighted average common shares (in shares)	47,087,000	47,175,000	47,315,000	43,071,000
Basic net income per common share (in dollars per share)	$ 1.21	$ 0.94	$ 4.00	$ 0.93
Diluted net income per common share (in dollars per share)	$ 1.20	$ 0.94	$ 3.98	$ 0.93
Anti-dilutive shares (in shares)	0	37,000	0	22,000