EMPLOYEE BENEFIT PLANS, SHARE-BASED PAYMENT AWARDS (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Options Outstanding [Roll Forward]
Option exercised (in shares)	455,051		346,489		87,825
Stock Options [Member]
Options Outstanding [Roll Forward]
Options outstanding - beginning of period (in shares)	2,893,760	[1]	3,213,007	[1]	3,266,920
Options granted	24,440		91,583		97,294
Option exercised (in shares)	455,051		385,758		87,825
Options forfeited (in shares)	7,012		25,072		63,382
Options outstanding - end of period (in shares)	2,456,137	[1]	2,893,760	[1]	3,213,007	[1]
Options Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted average exercise price of grants ( in dollars per share)	13.86		15.46		12.75
Weighted average exercise price of exercised options ( in dollars per share)	12.32		10.93		11.53
Weighted average exercise price of forfeited options ( in dollars per share)	19.90		15.76		12.66
Weighted average exercise price of outstanding options - end of period ( in dollars per share)	15.63		15.13		14.63
Remaining options available for grant (in shares)	249,230		412,588		623,304
Vested options at end of period ( in shares)	2,317,799		2,682,156		2,792,434
Weighted average exercise price of vested options - end of period (in dollars per share)	15.78		15.30		14.92
Cash received for option exercise cost	5,608		3,669		1,012
Income tax benefit recognized	319		371		27
Compensation expense recognized	309		528		967
Remaining unrecognized compensation expense	335		543		567
Weighted average remaining years for which compensation expense is to be recognized	1 year 9 months 18 days		2 years 8 months 12 days		1 year 8 months 12 days
Intrinsic value of options exercised during the period	871		1,209		251
Weighted average fair value per option at the date of grant for stock options granted [Abstract]
Total options granted (in shares)	24,440		91,583		97,294
Estimated fair value on date of grant (in dollars per share)	4.09		4.82		3.70
Pricing methodology utilized	Black- Scholes		Black- Scholes		Black- Scholes
Expected life	6 years 6 months 11 days		6 years 9 months 18 days		5 years 11 months 26 days
Interest rate (in hundredth)	1.21%		2.59%		2.76%
Volatility (in hundredth)	45.17%		42.35%		43.69%
Dividend yield	4.04%		3.62%		4.39%
Intrinsic value of outstanding options at period end	722		639		4,003
Intrinsic value of vested options at period end	531		395		3,132
Summary of Restricted Stock Awards [Roll Forward]
Income tax benefit recognized	319		371		27
Weighted average remaining years for which compensation expense is to be recognized	1 year 9 months 18 days		2 years 8 months 12 days		1 year 8 months 12 days
Restricted Stock [Member]
Options Outstanding, Weighted Average Exercise Price [Roll Forward]
Income tax benefit recognized	70		60		85
Weighted average remaining years for which compensation expense is to be recognized	1 year 3 months 18 days		1 year 3 months 18 days		1 year 3 months 18 days
Summary of Restricted Stock Awards [Roll Forward]
Unvested allocated shares - beginning of period (in shares)	324,454		309,783		295,066
Shares granted (in shares)	141,289		126,304		143,083
Shares vested (in shares)	135,369		109,649		95,107
Shares forfeited (in shares)	2,371		1,984		33,259
Unvested allocated shares - end of period (in shares)	328,003		324,454		309,783
Unallocated shares - end of period (in shares)	0		0		0
Compensation expense recognized	1,842		1,578		1,228
Income tax benefit recognized	70		60		85
Fair value of shares vested during the period	1,834		1,671		1,204
Weighted average remaining years for which compensation expense is to be recognized	1 year 3 months 18 days		1 year 3 months 18 days		1 year 3 months 18 days
Long Term Cash Incentive Payment Plan [Member]
Long Term Cash Incentive Payment Plan [Abstract]
Liability for expected future cash -based long-term incentive payments	1,194
Compensation expense recognized	717		595		587

[1] (1) At December 31, 2012, 2011 and 2010, respectively, all outstanding options were ultimately expected to vest.