STOCK COMPENSATION PLANS (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	May 25, 2005
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Granted, option shares (in shares)	0
Expired, 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)	3.63%	4.18%
Expected Stock Price Volatility (in hundredths)	26.16%	25.13%
Weighted Average Risk-Free Interest Rate (in hundredths)	1.68%	1.87%
Weighted Average Expected Life of Options (in years)	9 years 4 months 28 days	9 years 5 months 19 days
Base period for calculation of expected dividend yield (in months)	12 months
Unrecognized expense related to non-vested option shares	$ 14,000
Period over which unvested options cost will recognized (in years)	0 years 1 month 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	24,000
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)	0
Exercised, option shares (in shares)	(23,125)
Expired, option shares (in shares)	0
Outstanding at end of period, option shares (in shares)	363,875
Options exercisable at end of period, option share (in shares)	330,125
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)	$ 0
Exercised, weighted average exercise price (in dollars per shares)	$ 16.13
Outstanding at end of period, weighted average exercise price (in dollars per shares)	$ 19.14
Options exercisable at end of period, weighted average exercise price (in dollars per shares)	$ 18.79
Outstanding at end of period, weighted average remaining life (in years)	4 years 6 months 4 days
Options exercisable at end of period, weighted average remaining life (in years)	4 years 0 months 14 days
Options exercisable at beginning of period, aggregate intrinsic value	1,542,000
Exercised, aggregate intrinsic value	144,000
Outstanding at end of period, aggregate intrinsic value	1,213,000
Options exercisable at end of period, aggregate intrinsic value	$ 1,213,000
Share Based Compensation Arrangement By Share Based Payment Award Nonvested Options Outstanding [Roll Forward]
Granted, option shares (in shares)	0
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)	0
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)	0
Vested, option shares (in shares)	0
Canceled, option shares (in shares)	0
Outstanding at end of period, Non-vested option shares (in shares)	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)	$ 0
Vested, weighted average grant - date fair value per option (in dollars per shares)	$ 0
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)	$ 4.04