RETIREMENT FUND AND PROFIT SHARING PLAN (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
RETIREMENT FUND AND PROFIT SHARING PLAN [Abstract]
Employer match of the first 1% of employee deferral	100.00%		100.00%
Employer match of the next 5% of employee deferral	50.00%		50.00%
Components of SERP expense [Abstract]
Service cost	$ 109,000	$ 93,000	$ 327,000	$ 279,000
Interest cost	104,000	101,000	312,000	303,000
Amortization of adjustments	58,000	37,000	174,000	111,000
Total SERP expense	271,000	231,000	813,000	693,000
Balance sheet amounts:
Minimum pension obligation and unfunded pension liability	9,915,000		9,915,000		9,274,000
Amounts recognized in accumulated other comprehensive loss, pretax:
Prior service cost	911,000		911,000		1,010,000
Net gains	1,991,000		1,991,000		2,065,000
Total amounts recognized in accumulated other comprehensive loss	2,902,000		2,902,000		3,075,000
401(k) Plan [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Compensation expense	100,000	300,000	400,000	700,000
401(k) Plan [Member] | Class A [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Shares owned by plan	15,366		15,366
401(k) Plan [Member] | Class B [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Shares owned by plan	225,445		225,445
Non-defined Retirement Fund [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Compensation expense	$ 100,000	$ 100,000	$ 200,000	$ 200,000
Non-defined Retirement Fund [Member] | Class A [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Shares owned by plan	3,323		3,323
Non-defined Retirement Fund [Member] | Class B [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Shares owned by plan	17,342		17,342