STOCK INCENTIVE AND STOCK OPTION PLANS (Stock Option Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at beginning of period, Shares			1,056,977	1,884,318
Exercised, Shares				(662,721)
Cancelled or forfeited, Shares				(19,500)
Expired, Shares				(145,120)
Outstanding at end of period, Shares	1,056,977			1,056,977
Exercisable at end of period, Shares	977,491			977,491
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding at beginning of period, Weighted-Average Exercise Price			$ 20.67	$ 19.69
Exercised, Weighted-Average Exercise Price				20.26
Cancelled or forfeited, Weighted-Average Exercise Price				23.26
Outstanding at end of period, Weighted-Average Exercise Price	$ 20.67			20.67
Exercisable at end of period, Weighted-Average Exercise Price	$ 21.38			$ 21.38
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding at end of period, Weighted-Average Remaining Contractual Term (years)	1 year 9 months 18 days		1 year 4 months 24 days
Exercisable at end of period, Weighted-Average Remaining Contractual Term (years)	1 year 8 months 12 days		1 year 4 months 24 days
Outstanding at end of period, Aggregate Intrinsic Value	$ 2,672		$ 1,268	$ 2,672
Exercisable at end of period, Aggregate Intrinsic Value	$ 1,831		$ 1,268	$ 1,831
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at beginning of period, Shares		265,398	1,056,977
Exercised, Shares		(146,396)	(520,538)
Cancelled or forfeited, Shares			(237,286)
Expired, Shares		(41,700)	(33,755)
Outstanding at end of period, Shares	1,056,977	77,302	265,398	1,056,977
Exercisable at end of period, Shares		77,302	265,398
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding at beginning of period, Weighted-Average Exercise Price		$ 19.43	$ 20.67
Exercised, Weighted-Average Exercise Price		18.94	20.06
Cancelled or forfeited, Weighted-Average Exercise Price			23.22
Expired, Weighted-Average Exercise Price		24.66	21.93
Outstanding at end of period, Weighted-Average Exercise Price	$ 20.67	17.54	19.43	$ 20.67
Exercisable at end of period, Weighted-Average Exercise Price		$ 17.54	$ 19.43
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding at end of period, Weighted-Average Remaining Contractual Term (years)		1 year
Exercisable at end of period, Weighted-Average Remaining Contractual Term (years)		1 year
Outstanding at end of period, Aggregate Intrinsic Value		$ 1,045
Exercisable at end of period, Aggregate Intrinsic Value		$ 1,045