STOCK-BASED COMPENSATION (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Non Performance Based Options [Member]
Under option, beginning of year, Shares	72,483	88,111	115,459
Granted, Shares	0	0	0
Exercised, Shares	(13,880)	(15,628)	(25,395)
Forfeited, Shares	0	0	(1,953)
Under option, end of year	58,603	72,483	88,111
Exercisable at end of year	58,603	72,483	88,111
Under option, beginning of year, Weighted-Average Exercise Price	$ 18.55	$ 18.00	$ 17.24
Granted, Weighted-Average Exercise Price	0	0	0
Exercised, Weighted-Average Exercise Price	14.38	15.47	14.81
Forfeited, Weighted-Average Exercise Price	0	0	14.88
Under option, end of year, Weighted-Average Exercise Price	14.76	18.55	18.00
Exercisable at end of year, Weighted-Average Exercise Price	$ 14.76	$ 18.55	$ 18.00
Under option, end of year, Weighted Average Contractual Term	1 year 1 month 20 days	2 years 1 month 17 days	2 years 8 months 16 days
Exercisable at end of year, Weighted Average Contractual Term	1 year 1 month 20 days	2 years 1 month 17 days	2 years 8 months 16 days
Exercised, Aggregate Intrinsic Value	$ 200	$ 242	$ 148
Under option, end of year, Aggregate Intrinsic Value	1,620	1,331	884
Exercisable at end of year, Aggregate Intrinsic Value	$ 1,620	$ 1,331	$ 884
Performance Based [Member]
Under option, beginning of year, Shares	224,132	359,331	371,000
Granted, Shares	0	0	0
Exercised, Shares	(40,714)	(59,507)	(6,477)
Forfeited, Shares	(40,508)	(75,691)	(5,192)
Under option, end of year	142,910	224,132	359,331
Exercisable at end of year	142,910	189,587	341,030
Under option, beginning of year, Weighted-Average Exercise Price	$ 16.92	$ 16.74	$ 16.76
Granted, Weighted-Average Exercise Price	0	0	0
Exercised, Weighted-Average Exercise Price	14.68	15.39	11.05
Forfeited, Weighted-Average Exercise Price	19.67	17.37	25.51
Under option, end of year, Weighted-Average Exercise Price	15.06	16.92	16.74
Exercisable at end of year, Weighted-Average Exercise Price	$ 15.06	$ 15.91	$ 17.23
Under option, end of year, Weighted Average Contractual Term	1 year 2 months 19 days	1 year 9 months 18 days	2 years 1 month 10 days
Exercisable at end of year, Weighted Average Contractual Term	1 year 2 months 19 days	2 years 22 days	2 years
Exercised, Aggregate Intrinsic Value	$ 765	$ 916	$ 72
Under option, end of year, Aggregate Intrinsic Value	3,909	3,697	2,955
Exercisable at end of year, Aggregate Intrinsic Value	$ 3,909	$ 3,252	$ 2,629