NET INCOME PER SHARE (Calculation of Net Income per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Net income	$ 21,665	$ 15,112
Basic:
Basic weighted average EPS shares	35,659	24,119
Basic net income per share	$ 0.61	$ 0.63
Diluted:
Basic weighted average EPS shares	35,659	24,119
Dilutive common stock equivalents	25	40
Dilutive EPS shares	35,684	24,159
Diluted net income per share	$ 0.61	$ 0.63
Anti-dilutive shares	4	0