EMPLOYEE BENEFIT PLANS, SHARE-BASED PAYMENT AWARDS (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Options Outstanding [Roll Forward]
Option exercised (in shares)	833,334		455,051		385,758
Options Outstanding, Weighted Average Exercise Price [Roll Forward]
Income tax benefit recognized	$ 104		$ 70		$ 60
Weighted average remaining years for which compensation expense is to be recognized	1 year 2 months 12 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)	328,003		324,454		309,783
Shares granted (in shares)	145,925		141,289		126,304
Shares vested (in shares)	155,614		135,369		109,649
Shares forfeited (in shares)	0		2,371		1,984
Unvested allocated shares - end of period (in shares)	318,314		328,003		324,454
Unallocated shares - end of period (in shares)	0		0		0
Compensation expense recognized	2,011		1,842		1,578
Income tax benefit recognized	104		70		60
Fair value of shares vested during the period	1,944		1,834		1,671
Weighted average remaining years for which compensation expense is to be recognized	1 year 2 months 12 days		1 year 3 months 18 days		1 year 3 months 18 days
Stock Options [Member]
Options Outstanding [Roll Forward]
Options outstanding - beginning of period (in shares)	2,456,137	[1]	2,893,760	[1]	3,213,007
Options granted	0		24,440		91,583
Option exercised (in shares)	833,334		455,051		385,758
Options forfeited (in shares)	7,032		7,012		25,072
Options outstanding - end of period (in shares)	1,615,771	[1]	2,456,137	[1]	2,893,760	[1]
Options Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted average exercise price of grants ( in dollars per share)	$ 0		$ 13.86		$ 15.46
Weighted average exercise price of exercised options (in dollars per share)	$ 13.47		$ 12.32		$ 10.93
Weighted average exercise price of forfeited options in (dollars per share)	$ 16.93		$ 19.90		$ 15.76
Weighted average exercise price of outstanding options - end of period (in dollars per share)	$ 16.74		$ 15.63		$ 15.13
Remaining options available for grant (in shares)	1,043,074		249,230		412,588
Vested options at end of period ( in shares)	1,563,493		2,317,799		2,682,156
Weighted average exercise price of vested options - end of period (in dollars per share)	$ 16.80		$ 15.78		$ 15.30
Cash received for option exercise cost	11,228		5,608		3,669
Income tax benefit recognized	531		319		371
Compensation expense recognized	194		309		528
Remaining unrecognized compensation expense	141		335		543
Weighted average remaining years for which compensation expense is to be recognized	1 year 2 months 12 days		1 year 9 months 18 days		2 years 8 months 12 days
Intrinsic value of options exercised during the period	2,569		871		1,209
Weighted average fair value per option at the date of grant for stock options granted [Abstract]
Estimated fair value on date of grant (in dollars per share)	$ 0		$ 4.09		$ 4.82
Pricing methodology utilized	0		Black- Scholes		Black- Scholes
Expected life	0 years		6 years 6 months 11 days		6 years 9 months 18 days
Interest rate (in hundredths)	0.00%		1.21%		2.59%
Volatility (in hundredths)	0.00%		45.17%		42.35%
Dividend yield (in hundredths)	0.00%		4.04%		3.62%
Intrinsic value of outstanding options at period end	2,243		722		639
Intrinsic value of vested options at period end	2,129		531		395
Summary of Restricted Stock Awards [Roll Forward]
Income tax benefit recognized	531		319		371
Weighted average remaining years for which compensation expense is to be recognized	1 year 2 months 12 days		1 year 9 months 18 days		2 years 8 months 12 days
Restricted Stock [Member] | Outside Directors [Member]
Restricted Stock Awards [Abstract]
Award vesting period	1 year
Restricted Stock [Member] | Certain Officers [Member]
Restricted Stock Awards [Abstract]
Award vesting period	4 years
Long Term Cash Incentive Payment Plan [Member]
Long Term Cash Incentive Payment Plan [Abstract]
Percentage of threshold target for each award eligible to be earned based on relative performance (in hundredths)	50.00%
Percentage of target for each award eligible to be earned based on relative performance (in hundredths)	100.00%
Percentage of maximum target for each award eligible to be earned based on relative performance (in hundredths)	150.00%
Measurement period goals related to Long Term Cash Incentive Payment Plan award payment	3 years
Liability for expected future cash -based long-term incentive payments	1,383
Compensation expense recognized	$ 639		$ 717		$ 595

[1] At December 31, 2013, 2012 and 2011, respectively, expected forfeitures were immaterial.