STOCK-BASED COMPENSATION, Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Information Related to Stock Option Plans [Abstract]
Cash received for option exercise cost		$ 792	$ 3,498	$ 6,549
Stock Options [Member]
Stock Option Activity [Abstract]
Expiration period		10 years
Number of Options [Roll Forward]
Options outstanding, beginning of period (in shares)		209,254	465,246
Options granted (in shares)		0	0	0
Options exercised (in shares)		(51,708)	(245,992)
Options that expired prior to exercised (in shares)		0	(10,000)
Options outstanding, end of period (in shares)		157,546	209,254	465,246
Options vested and exercisable, end of period (in shares)		157,546
Weighted-Average Exercise Price [Abstract]
Options outstanding, beginning of period (in dollars per share)		$ 15.48	$ 14.87
Weighted average exercise price of grants ( in dollars per share)		0	0
Weighted average exercise price of exercised options (in dollars per share)		15.35	14.22
Weighted average exercise price of options that expire prior to exercise (in dollars per share)		0	18.18
Weighted average exercise price of outstanding options - end of period (in dollars per share)		15.53	$ 15.48	$ 14.87
Weighted average exercise price of vested options - end of period (in dollars per share)		$ 15.53
Stock Options, Additional Disclosure [Abstract]
Options outstanding		1 year 8 months 12 days	2 years 2 months 12 days
Weighted-average remaining contractual years of options vested and exercisable		1 year 8 months 12 days
Aggregate intrinsic value of options outstanding		$ 1,027	$ 966
Options vested and exercisable		1,027
Information Related to Stock Option Plans [Abstract]
Cash received for option exercise cost		792	3,498	$ 6,549
Income tax benefit recognized	[1]	52	93	264
Intrinsic value of options exercised		314	826	1,143
Compensation expense recognized		0	0	31
Remaining unrecognized compensation expense		$ 0	$ 0	$ 0
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, End of Period [Abstract]
Outstanding options, amount (in shares)		157,546
Outstanding options, weighted average remaining contractual years remaining		1 year 8 months 12 days
Vested options, amount (in shares)		157,546
Vested options, weighted average contractual years remaining		1 year 8 months 12 days
Stock Options [Member] | Exercise Price $8.34 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, End of Period [Abstract]
Outstanding options, exercise prices (in dollars per share)		$ 8.34
Outstanding options, amount (in shares)		13,713
Outstanding options, weighted average remaining contractual years remaining		1 year 3 months 18 days
Vested options, amount (in shares)		13,713
Vested options, weighted average contractual years remaining		1 year 3 months 18 days
Stock Options [Member] | Exercise Price $12.75 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, End of Period [Abstract]
Outstanding options, exercise prices (in dollars per share)		$ 12.75
Outstanding options, amount (in shares)		19,827
Outstanding options, weighted average remaining contractual years remaining		2 years 3 months 18 days
Vested options, amount (in shares)		19,827
Vested options, weighted average contractual years remaining		2 years 3 months 18 days
Stock Options [Member] | Exercise Price $13.86 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, End of Period [Abstract]
Outstanding options, exercise prices (in dollars per share)		$ 13.86
Outstanding options, amount (in shares)		12,220
Outstanding options, weighted average remaining contractual years remaining		4 years 3 months 18 days
Vested options, amount (in shares)		12,220
Vested options, weighted average contractual years remaining		4 years 3 months 18 days
Stock Options [Member] | Exercise Price $15.46 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, End of Period [Abstract]
Outstanding options, exercise prices (in dollars per share)		$ 15.46
Outstanding options, amount (in shares)		31,479
Outstanding options, weighted average remaining contractual years remaining		3 years 3 months 18 days
Vested options, amount (in shares)		31,479
Vested options, weighted average contractual years remaining		3 years 3 months 18 days
Stock Options [Member] | Exercise Price $16.73 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, End of Period [Abstract]
Outstanding options, exercise prices (in dollars per share)		$ 16.73
Outstanding options, amount (in shares)		25,307
Outstanding options, weighted average remaining contractual years remaining		7 months 6 days
Vested options, amount (in shares)		25,307
Vested options, weighted average contractual years remaining		7 months 6 days
Stock Options [Member] | Exercise Price $18.18 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, End of Period [Abstract]
Outstanding options, exercise prices (in dollars per share)		$ 18.18
Outstanding options, amount (in shares)		55,000
Outstanding options, weighted average remaining contractual years remaining		4 months 24 days
Vested options, amount (in shares)		55,000
Vested options, weighted average contractual years remaining		4 months 24 days
Stock Options [Member] | Outside Directors [Member]
Stock Option Activity [Abstract]
Award vesting period		1 year
Stock Options [Member] | Certain Officers [Member]
Stock Option Activity [Abstract]
Award vesting period		4 years

[1] Effective January 1, 2017, income tax benefits were recognized as discrete items in income tax expense in accordance to ASU 2016-09. Prior to January, 1, 2017, income tax benefits were recognized through additional paid in capital.