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COMMON STOCK (Details) (USD $)
 0 Months Ended 1 Months Ended 6 Months Ended
Mar. 31, 2009
Mar. 31, 2009
Jun. 30, 2014
Dec. 31, 2008
Statement Of Partners Capital [Abstract]        
Common stock authorized by the Board of Directors (in shares)       2,250,000
Maximum percentage of repurchase of common stock (in hundredths)   10.00%    
Repurchase of common stock (in shares) 1,200,000 859,499 0  
Bank credit agreement to permit share repurchases of common stock   $ 15,000,000    
Total purchased shares (in shares) 1,200,000 859,499 0  
Additional estimated shares (in shares)   340,501