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GOLD AND SILVER BULLION (Details) (USD $)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Dec. 31, 2011
GOLD AND SILVER BULLION          
Total cost $ 1,690,000   $ 1,690,000   $ 22,810,000
Changes in the Company's holdings of gold and silver          
Opening Balance     22,810,000 4,569,000 4,569,000
Purchases       31,300,000 31,299,000
Proceeds from sale     (23,836,000) (8,784,000) (11,739,000)
Gain on sale 1,233,000 1,143,000 3,075,000 1,667,000 2,075,000
Unrealized loss on silver bullion   (2,139,000) (359,000) (2,139,000) (3,394,000)
Ending Balance 1,690,000   1,690,000   22,810,000
Gold
          
GOLD AND SILVER BULLION          
# of ounces 793   793   5,656
Average cost per ounce (in dollars per ounce) 1,278.63   1,278.63   1,278.63
Total cost 1,014,000   1,014,000   7,232,000
Fair value per ounce (in dollars per ounce) 1,776.00   1,776.00   1,574.50
Total fair value 1,408,000   1,408,000   8,905,000
Quantity sold (in ounces)     4,863    
Cost of investments sold     6,200,000    
Changes in the Company's holdings of gold and silver          
Opening Balance     7,232,000 4,569,000 4,569,000
Purchases         7,387,000
Proceeds from sale     (7,982,000)   (6,218,000)
Gain on sale     1,764,000   1,494,000
Ending Balance 1,014,000   1,014,000   7,232,000
Silver
          
GOLD AND SILVER BULLION          
# of ounces 24,969   24,969   552,812
Average cost per ounce (in dollars per ounce) 27.08   27.08   28.18
Total cost 676,000   676,000   15,578,000
Fair value per ounce (in dollars per ounce) 34.65   34.65   28.18
Total fair value 865,000   865,000   15,578,000
Quantity sold (in ounces)     527,843    
Cost of investments sold     14,500,000    
Changes in the Company's holdings of gold and silver          
Opening Balance     15,578,000    
Purchases         23,912,000
Proceeds from sale     (15,854,000)   (5,521,000)
Gain on sale     1,311,000   581,000
Unrealized loss on silver bullion     (359,000)   (3,394,000)
Ending Balance $ 676,000   $ 676,000   $ 15,578,000