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INVESTMENTS - Additional Information (Detail) (USD $)
Sep. 30, 2014
Jun. 30, 2014
Dec. 31, 2013
Government Fund
Mutual funds
Schedule of Trading Securities and Other Trading Assets [Line Items]      
Carrying value of investments held $ 23,100,000    
Cost basis of investments held 22,900,000    
Other investments 2,413,000 1,413,000  
Carrying value of investments to Company's total assets 70.00%    
Trading securities, at fair value $ 17,586,000 $ 17,817,000 $ 14,100,000