STOCK COMPENSATION PLANS (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	May 25, 2005
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Granted, option shares (in shares)			0
Share Based Compensation Arrangement By Share Based Payment Award Nonvested Options Outstanding [Roll Forward]
Granted, option shares (in shares)			0
Non-vested shares of Class A Stock under option [Abstract]
Vesting period for granted option (in years)			1 year
Options granted term (in years)			10 years
Weighted-average assumptions used for grants issued [Abstract]
Expected Dividend Yield (in hundredths)			3.88%	3.63%
Expected Stock Price Volatility (in hundredths)			26.50%	26.16%
Weighted Average Risk-Free Interest Rate (in hundredths)			2.24%	1.68%
Weighted Average Expected Life of Options (in years)			7 years 6 months 7 days	9 years 4 months 28 days
Unrecognized expense related to non-vested option shares	$ 113,000		$ 113,000
Period over which unvested options cost will recognized (in years)			0 years 10 months 6 days
Class A Stock [Member] | 2005 Equity Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorizes for new issues					500,000
Compensation expense	34,000	30,000	67,000	55,000
Class A Stock [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at beginning of period, option shares (in shares)			387,000
Granted, option shares (in shares)			33,750
Exercised, option shares (in shares)			(40,500)
Outstanding at end of period, option shares (in shares)	380,250		380,250
Options exercisable at end of period, option share (in shares)	346,500		346,500
Shares of Class A Non-Voting Common Stock under option [Abstract]
Outstanding at beginning of period, weighted average exercise price (in dollars per shares)			$ 18.96
Granted, weighted average exercise price (in dollars per shares)			$ 21.86
Exercised, weighted average exercise price (in dollars per shares)			$ 16.13
Outstanding at end of period, weighted average exercise price (in dollars per shares)	$ 19.52		$ 19.52
Options exercisable at end of period, weighted average exercise price (in dollars per shares)	$ 19.30		$ 19.30
Outstanding at end of period, weighted average remaining life (in years)			4 years 11 months 12 days
Options exercisable at end of period, weighted average remaining life (in years)			4 years 5 months 23 days
Options exercisable at beginning of period, aggregate intrinsic value			1,542,000
Exercised, aggregate intrinsic value			238,000
Outstanding at end of period, aggregate intrinsic value	1,130,000		1,130,000
Options exercisable at end of period, aggregate intrinsic value	$ 1,110,000		$ 1,110,000
Share Based Compensation Arrangement By Share Based Payment Award Nonvested Options Outstanding [Roll Forward]
Granted, option shares (in shares)			33,750
Class A Stock [Member] | Non-Vested Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Granted, option shares (in shares)			33,750
Share Based Compensation Arrangement By Share Based Payment Award Nonvested Options Outstanding [Roll Forward]
Outstanding at beginning of period, Non-vested option shares (in shares)			33,750
Granted, option shares (in shares)			33,750
Vested, option shares (in shares)			(33,750)
Canceled, option shares (in shares)			0
Outstanding at end of period, Non-vested option shares (in shares)	33,750		33,750
Non-vested shares of Class A Stock under option [Abstract]
Outstanding at beginning of period, weighted average grant - date fair value per option (in dollars per shares)			$ 4.04
Granted, weighted average grant - date fair value per option (in dollars per shares)			$ 3.94
Vested, weighted average grant - date fair value per option (in dollars per shares)			$ 4.04
Canceled, weighted average grant - date fair value per option (in dollars per shares)			$ 0
Outstanding at end of period, weighted average grant - date fair value per option (in dollars per shares)	$ 3.94		$ 3.94