STOCK-BASED COMPENSATION (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Non Performance Based Options [Member]
Under option, beginning of year, Shares	88,111	115,459	148,498
Granted, Shares	0	0	0
Exercised, Shares	(15,628)	(25,395)	(27,657)
Forfeited, Shares	0	(1,953)	(5,382)
Under option, end of year	72,483	88,111	115,459
Exercisable at end of year	72,483	88,111	115,459
Under option, beginning of year, Weighted-Average Exercise Price	$ 18.00	$ 17.24	$ 16.37
Granted, Weighted-Average Exercise Price	0	0	0
Exercised, Weighted-Average Exercise Price	15.47	14.81	13.29
Forfeited, Weighted-Average Exercise Price	0	14.88	13.43
Under option, end of year, Weighted-Average Exercise Price	18.55	18.00	17.24
Exercisable at end of year, Weighted-Average Exercise Price	$ 18.55	$ 18.00	$ 17.24
Under option, end of year, Weighted Average Contractual Term	2 years 1 month 17 days	2 years 8 months 16 days	3 years 14 days
Exercisable at end of year, Weighted Average Contractual Term	2 years 1 month 17 days	2 years 8 months 16 days	3 years 14 days
Exercised, Aggregate Intrinsic Value	$ 242	$ 148	$ 107
Under option, end of year, Aggregate Intrinsic Value	1,331	884	641
Exercisable at end of year, Aggregate Intrinsic Value	$ 1,331	$ 884	$ 641
Performance Based [Member]
Under option, beginning of year, Shares	359,331	371,000	391,321
Granted, Shares	0	0	0
Exercised, Shares	(59,507)	(6,477)	(4,524)
Forfeited, Shares	(75,691)	(5,192)	(15,797)
Under option, end of year	224,132	359,331	371,000
Exercisable at end of year	189,587	341,030	351,856
Under option, beginning of year, Weighted-Average Exercise Price	$ 16.74	$ 16.76	$ 16.43
Granted, Weighted-Average Exercise Price	0	0	0
Exercised, Weighted-Average Exercise Price	15.39	11.05	7.47
Forfeited, Weighted-Average Exercise Price	17.37	25.51	13.22
Under option, end of year, Weighted-Average Exercise Price	16.92	16.74	16.76
Exercisable at end of year, Weighted-Average Exercise Price	$ 15.91	$ 17.23	$ 17.27
Under option, end of year, Weighted Average Contractual Term	1 year 9 months 18 days	2 years 1 month 10 days	3 years 1 month 13 days
Exercisable at end of year, Weighted Average Contractual Term	2 years 22 days	2 years	3 years 4 days
Exercised, Aggregate Intrinsic Value	$ 916	$ 72	$ 42
Under option, end of year, Aggregate Intrinsic Value	3,697	2,955	1,401
Exercisable at end of year, Aggregate Intrinsic Value	$ 3,252	$ 2,629	$ 1,145