STOCK COMPENSATION PLANS (Details) - USD ($) | 3 Months Ended | 6 Months Ended | |
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | 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% | |
Expected Stock Price Volatility (in hundredths) | | | | 26.50% | |
Weighted Average Risk-Free Interest Rate (in hundredths) | | | | 2.24% | |
Weighted Average Expected Life of Options (in years) | | | 7 years 6 months 7 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 | $ 13,000 | $ 34,000 | $ 46,000 | $ 67,000 | |
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) | | | 376,250 | | |
Granted, option shares (in shares) | | | 0 | | |
Exercised, option shares (in shares) | | | (176) | | |
Outstanding at end of period, option shares (in shares) | 376,074 | | 376,074 | | |
Options exercisable at end of period, option share (in shares) | 376,074 | | 376,074 | | |
Shares of Class A Non-Voting Common Stock under option [Abstract] | | | | | |
Outstanding at beginning of period, weighted average exercise price (in dollars per shares) | | | $ 19.52 | | |
Granted, weighted average exercise price (in dollars per shares) | | | 0 | | |
Exercised, weighted average exercise price (in dollars per shares) | | | 19.70 | | |
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) | $ 19.52 | | $ 19.52 | | |
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2 | | | 3 years 11 months 26 days | | |
Options exercisable at end of period, weighted average remaining life (in years) | | | 3 years 11 months 26 days | | |
Options exercisable at beginning of period, aggregate intrinsic value | | | $ 1,157,000 | | |
Exercised, aggregate intrinsic value | | | 324 | | |
Outstanding at end of period, aggregate intrinsic value | $ 669,600 | | 669,600 | | |
Options exercisable at end of period, aggregate intrinsic value | $ 669,600 | | $ 669,600 | | |
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) | | | (33,750) | | |
Canceled, option shares (in shares) | | | 0 | | |
Outstanding at end of period, Non-vested option shares (in shares) | 0 | | 0 | | |
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) | | | $ 3.95 | | |
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) | | | 3.95 | | |
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) | $ 0 | | $ 0 | | |