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FHLB STOCK (Details) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]      
Federal Home Loan Bank Stock, Par Value Per Share $ 100banr_FederalHomeLoanBankStockParValuePerShare    
Federal Home Loan Bank (FHLB) stock $ 25,544,000us-gaap_FederalHomeLoanBankStock   $ 27,036,000us-gaap_FederalHomeLoanBankStock
Dividend Income on FHLB Stock 7,000us-gaap_InvestmentIncomeDividend 9,000us-gaap_InvestmentIncomeDividend  
Proceeds from Sale of Federal Reserve Stock 2,000,000us-gaap_ProceedsFromSaleOfFederalReserveStock    
Investment in Federal Home Loan Bank Stock [Member]      
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]      
Impairment Recognized on FHLB Stock $ 0us-gaap_ImpairmentOfInvestments
/ invest_InvestmentAxis
= us-gaap_InvestmentInFederalHomeLoanBankStockMember