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FAIR VALUES OF FINANCIAL INSTRUMENTS (Additional Information) (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.        
Mortgage servicing rights $ 2,184,000 $ 2,098,000 $ 2,390,000 $ 2,136,000
Weighted average interest rate, residential mortgages (in hundredths) 4.44%      
Weighted average maturity of residential mortgages 19 years      
Prepayment Speed used in unobservable assumptions 392 387    
Discount rate used to estimate fair value (in hundredths) 9.20% 9.20%    
Subtotal 2,257,844,000 2,234,037,000    
Valuation allowance 51,445,000 53,400,000 45,007,000 32,073,000
Recoveries 1,418,000 1,422,000 729,000  
Loans, Net 2,206,075,000 2,180,309,000    
Non-Agency Residential Mortgage-Backed Securities [Member]
       
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.        
Transfers into Level 3 2,859,000 0    
State and Municipal Securities [Member]
       
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.        
Transfers into Level 3 351,000 686,000    
Commercial Real Estates [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
       
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.        
Percentage of discount from appraised value (in hundredths) 0.00%      
Commercial Real Estates [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
       
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.        
Percentage of discount from appraised value (in hundredths) 50.00%      
Inventory Finished Goods [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
       
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.        
Percentage of discount from appraised value (in hundredths) 35.00%      
Inventory Finished Goods [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
       
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.        
Percentage of discount from appraised value (in hundredths) 65.00%      
Finished Goods [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
       
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.        
Percentage of discount from appraised value (in hundredths) 30.00%      
Finished Goods [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
       
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.        
Percentage of discount from appraised value (in hundredths) 60.00%      
Inventory Work In Process [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
       
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.        
Percentage of discount from appraised value (in hundredths) 50.00%      
Inventory Work In Process [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
       
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.        
Percentage of discount from appraised value (in hundredths) 100.00%      
Equipment [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
       
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.        
Percentage of discount from appraised value (in hundredths) 30.00%      
Equipment [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
       
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.        
Percentage of discount from appraised value (in hundredths) 70.00%      
Marketable Securities [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
       
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.        
Percentage of discount from appraised value (in hundredths) 10.00%      
Marketable Securities [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
       
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.        
Percentage of discount from appraised value (in hundredths) 30.00%      
Impaired Loans [Member]
       
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.        
Subtotal 39,400,000 62,200,000    
Valuation allowance 10,000,000 18,200,000    
Recoveries 8,200,000      
Additional provision for loan losses   6,900,000    
Mortgage Servicing Rights [Member]
       
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.        
Loans at fair value 1,900,000 1,700,000    
Subtotal 1,900,000 1,800,000    
Valuation allowance 42,000 108,000    
Recoveries 66,000      
Additional impairment of investments   86,000    
Other Real Estate Owned [Member]
       
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.        
Subtotal 147,000 1,100,000    
Valuation allowance 72,000 340,000    
Loans, Net $ 75,000 $ 730,000