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STOCK COMPENSATION PLANS (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 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		$ 33,000	$ 46,000	$ 101,000
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)			(63,500)
Outstanding at end of period, option shares (in shares)	312,750		312,750
Options exercisable at end of period, option share (in shares)	312,750		312,750
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)	$ 19.48		19.48
Options exercisable at end of period, weighted average exercise price (in dollars per shares)	$ 19.48		$ 19.48
Outstanding at end of period, weighted average remaining life (in years)			4 years 5 months 12 days
Options exercisable at end of period, weighted average remaining life (in years)			4 years 5 months 12 days
Options exercisable at beginning of period, aggregate intrinsic value			$ 1,157,000
Exercised, aggregate intrinsic value			169,000
Outstanding at end of period, aggregate intrinsic value	$ 1,456,000		1,456,000
Options exercisable at end of period, aggregate intrinsic value	$ 1,456,000		$ 1,456,000
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)			(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

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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