SHARE BASED COMPENSATION (Summary of Share Option Activity) (Detail) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Number of Common Shares
Beginning balance	108,503
Granted	12,941
Exercised	(28,736)	(34,646)
Forfeited or expired	(3,577)
Ending balance	89,131
Exercisable, Common Shares	58,646
Weighted Average Exercise Share Price
Beginning balance	$ 22.46
Granted	42.48
Exercised	19.11
Forfeited or expired	30.07
Ending balance	24.16
Exercisable Weighted Average Exercise Price	22.46
Weighted average fair value of options granted during the year	$ 13.42	$ 7.75
Weighted Average Contractual Remaining Life(Years)
Balance at end of period	3 years 9 months 24 days
Exercisable at end of period	2 years 9 months 24 days
Beginning balance	$ 1,902
Exercised	638
Ending balance	1,374
Exercisable, Intrinsic Value	$ 1,113