SHARE BASED COMPENSATION (Summary of Share Option Activity) (Detail) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Number of Common Shares
Beginning balance	108,503
Granted	12,941
Exercised	(27,284)	(28,941)
Forfeited or expired	(3,577)
Ending balance	90,583
Exercisable, Common Shares	60,098
Weighted Average Exercise Share Price
Beginning balance	$ 22.46
Granted	42.48
Exercised	19
Forfeited or expired	30.07
Ending balance	26.08
Exercisable Weighted Average Exercise Price	22.43
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	4 years
Exercisable at end of period	3 years
Beginning balance	$ 1,902
Exercised	609
Ending balance	1,347
Exercisable, Intrinsic Value	$ 1,097