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MARKETABLE EQUITY SECURITIES (Details) (USD $)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
MARKETABLE EQUITY SECURITIES [Abstract]          
Impairment charges on investments in marketable securities $ 44,000 $ 193,000 $ 44,000 $ 193,000  
Available-for-sale Securities          
Fair market value 18,931,000   18,931,000   20,123,000
Cost 11,337,000   11,337,000   12,539,000
Unrealized gain 7,594,000   7,594,000   7,584,000
Trading securities          
Fair market value 144,000   144,000   141,000
Cost 157,000   157,000   157,000
Unrealized gain (loss)     (13,000)   (16,000)
Total          
Fair market value 19,075,000   19,075,000   20,264,000
Cost 11,494,000   11,494,000   12,696,000
Unrealized gain     7,581,000   7,568,000
Available-for-sale securities:          
Gross unrealized gains 7,807,000   7,807,000   7,866,000
Gross unrealized losses (213,000)   (213,000)   (282,000)
Unrealized gain 7,594,000   7,594,000   7,584,000
Accumulated other comprehensive income 4,711,000   4,711,000   4,705,000
Net unrealized gains in market value on securities classified as available-for-sale     678,000   825,000
Trading securities          
Recognized (loss) gain at beginning of period 2,000 16,000 (16,000) 14,000 14,000
Recognized gain at end of period (13,000) (4,000) (13,000) (4,000) (16,000)
Change in net recognized gain (15,000) (20,000) 3,000 (18,000)  
Change in net recognized gain (loss), net of taxes (9,000) (12,000) 2,000 (11,000)  
Realized gains          
Sale proceeds 1,625,000 0 2,151,000 966,000  
Cost of securities sold 882,000 0 1,111,000 189,000  
Realized gains 743,000 0 1,040,000 777,000  
Realized gains, net of taxes 445,000 0 624,000 489,000  
Summary of gross unrealized losses and fair value of securities [Abstract]          
Equity securities - Available-for-sale, Fair Value 18,931,000   18,931,000   20,123,000
Equity securities - Trading, Fair Value 144,000   144,000   141,000
Total, Fair Value 19,075,000   19,075,000   20,264,000
Equity securities - Available-for-sale, Unrealized Losses 213,000   213,000   282,000
Totals, Unrealized Losses     7,581,000   7,568,000
Outstanding borrowings 6,381,000   6,381,000   0
Equity Securities [Member]
          
Available-for-sale Securities          
Fair market value 2,339,000   2,339,000   2,914,000
Trading securities          
Fair market value 80,000   80,000   141,000
Total          
Fair market value 2,419,000   2,419,000   3,055,000
Unrealized gain     227,000   298,000
Available-for-sale securities:          
Gross unrealized losses (214,000)   (214,000)   (282,000)
Summary of gross unrealized losses and fair value of securities [Abstract]          
Equity securities - Available-for-sale, Fair Value 2,339,000   2,339,000   2,914,000
Equity securities - Trading, Fair Value 80,000   80,000   141,000
Total, Fair Value 2,419,000   2,419,000   3,055,000
Equity securities - Available-for-sale, Unrealized Losses 214,000   214,000   282,000
Equity securities - Trading, Unrealized Losses     13,000   16,000
Totals, Unrealized Losses     $ 227,000   $ 298,000