RETIREMENT FUND AND PROFIT SHARING PLAN (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 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	$ 218,000	$ 186,000
Interest cost	104,000	101,000	208,000	202,000
Amortization of adjustments	58,000	37,000	116,000	74,000
Total SERP expense	271,000	231,000	542,000	462,000
Balance sheet amounts:
Minimum pension obligation and unfunded pension liability	9,702,000		9,702,000		9,274,000
Amounts recognized in accumulated other comprehensive loss, pretax:
Prior service cost	944,000		944,000		1,010,000
Net gains	2,016,000		2,016,000		2,065,000
Total amounts recognized in accumulated other comprehensive loss	2,960,000		2,960,000		3,075,000
401(k) Plan [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Compensation expense	100,000	100,000	300,000	300,000
401(k) Plan [Member] | Class A [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Shares owned by plan	15,376		15,376
401(k) Plan [Member] | Class B [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Shares owned by plan	228,795		228,795
Non-defined Retirement Fund [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Compensation expense	$ 100,000	$ 100,000	$ 100,000	$ 100,000
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