STOCK-BASED COMPENSATION PLANS - Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Options Outstanding
Outstanding, beginning of period (in shares)	1,097,323	1,147,558	1,232,862
Granted (in shares)	94,115	84,675	81,552
Exercised (in shares)	(83,790)	(124,156)	(163,786)
Canceled (in shares)	(8,825)	(10,754)	(3,070)
Outstanding, end of period (in shares)	1,098,823	1,097,323	1,147,558	1,232,862
Exercisable at December 31, 2016	885,442
Weighted-Average Exercise Price per Share
Outstanding, beginning of period (in dollars per share)	$ 32.70	$ 28.33	$ 24.36
Granted (in dollars per share)	61.39	87.35	73.20
Exercised (in dollars per share)	25.58	26.70	20.37
Canceled (in dollars per share)	71.47	65.22	52.73
Outstanding, end of period (in dollars per share)	35.39	$ 32.70	$ 28.33	$ 24.36
Exercisable at December 31, 2016	$ 27.32
Weighted-Average Remaining Contractual Life
Weighted- Average Remaining Contractual Life, outstanding	4 years 3 months 18 days	4 years 9 months 18 days	5 years 6 months	6 years 1 month 6 days
Weighted Average Remaining Contractual Life, Exercisable shares at December 31, 2016	3 years 6 months
Aggregate Intrinsic Value
Outstanding, beginning of period	$ 42,154	$ 67,205	$ 61,530
Granted	2,035	1,375	1,116
Exercised	(4,813)	(5,516)	(10,895)
Canceled	(102)	(64)	(105)
Outstanding, end of period	52,332	$ 42,154	$ 67,205	$ 61,530
Exercisable at December 31, 2016	$ 49,321