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OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
The M Group
The M Group products and income recognition        
Term life insurance policies, term one       10 years
Term life insurance policies, term two       15 years
Term life insurance policies, term three       20 years
Term life insurance policies, term four       30 years
Term for which majority of the term life insurance policies are written       20 years
Accumulated other comprehensive income        
Net unrealized gain on available for sale securities $ 10,164 $ 2,914 $ (7,276)  
Defined benefit plan (4,807) (4,133) (2,413)  
Total $ 5,357 $ (1,219) $ (9,689)