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INVESTMENTS (Details 2) (USD $)
12 Months Ended 3 Months Ended 9 Months Ended
Dec. 31, 2013
Sep. 30, 2014
Auction rate securities
Sep. 30, 2013
Auction rate securities
Sep. 30, 2014
Auction rate securities
Sep. 30, 2013
Auction rate securities
INVESTMENTS          
Realized gains on the sale of available-for-sale investments $ 2,500,000        
Investments          
Gain on trading securities sold   630,000 140,000 900,000 140,000
Gain (loss) on trading securities held   18,000 71,000 (167,000) 468,000
Gain on trading securities   $ 648,000 $ 211,000 $ 733,000 $ 608,000