Annual report pursuant to Section 13 and 15(d)

FAIR VALUE MEASUREMENT (Financial Assets And Financial Liabilities Carried At Fair Value On A Recurring Basis) (Details)

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FAIR VALUE MEASUREMENT (Financial Assets And Financial Liabilities Carried At Fair Value On A Recurring Basis) (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities $ 422,375 $ 342,938
Fair Value Measurements Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets at fair value 422,375 342,938
Fair Value Measurements Recurring [Member] | U.S. Treasury and Government Sponsored Agencies [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 46,254 45,009
Fair Value Measurements Recurring [Member] | Mortgage-Backed Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 227,190 136,954
Fair Value Measurements Recurring [Member] | State and Municipal Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 139,930 146,033
Fair Value Measurements Recurring [Member] | Corporate Debt [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 9,001 14,942
Fair Value Measurements Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets at fair value 0 0
Fair Value Measurements Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | U.S. Treasury and Government Sponsored Agencies [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0 0
Fair Value Measurements Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Mortgage-Backed Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0 0
Fair Value Measurements Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | State and Municipal Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0 0
Fair Value Measurements Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Corporate Debt [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0 0
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets at fair value 422,375 342,938
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level 2 [Member] | U.S. Treasury and Government Sponsored Agencies [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 46,254 45,009
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level 2 [Member] | Mortgage-Backed Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 227,190 136,954
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level 2 [Member] | State and Municipal Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 139,930 146,033
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level 2 [Member] | Corporate Debt [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 9,001 14,942
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level 3 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets at fair value 0 0
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level 3 [Member] | U.S. Treasury and Government Sponsored Agencies [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0 0
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level 3 [Member] | Mortgage-Backed Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0 0
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level 3 [Member] | State and Municipal Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities 0 0
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level 3 [Member] | Corporate Debt [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities $ 0 $ 0