SHARE BASED COMPENSATION (Summary of Share Option Activity) (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Number of Common Shares
Balance at January 1, 2015	134,131
Granted	21,238
Exercised	(21,694)	(5,752)
Forfeited or expired	(1,060)
Balance at March 31, 2015	132,615
Exercisable, Common Shares	71,199
Weighted Average Exercise Share Price
Balance at January 1, 2015	$ 19.7
Granted	27.46
Exercised	13.16
Forfeited or expired	25.06
Balance at March 31, 2015	21.97
Exercisable at December 31, 2014	18.73
Weighted average fair value of options granted during the year	$ 7.75	$ 7.63
Weighted Average Contractual Remaining Life(Years)
Balance at end of period	4 years 1 month 6 days
Exercisable at end of period	2 years 7 months 6 days
Balance at January 1, 2015	$ 974
Exercised	297
Balance at March 31, 2015	783
Exercisable, Intrinsic Value	$ 648