XML 107 R122.htm IDEA: XBRL DOCUMENT v2.4.1.9
OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS (Estimated Annual Amortization Expense) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]        
Year Ended December 31, 2015 $ 1,007us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths      
Year Ended December 31, 2016 353us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo      
Year Ended December 31, 2017 321us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree      
Year Ended December 31, 2018 296us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour      
Thereafter 854banr_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour      
Net carrying amount 2,831us-gaap_FiniteLivedIntangibleAssetsNet 2,449us-gaap_FiniteLivedIntangibleAssetsNet 4,230us-gaap_FiniteLivedIntangibleAssetsNet 6,331us-gaap_FiniteLivedIntangibleAssetsNet
Core Deposit Intangibles [Member]        
Finite-Lived Intangible Assets [Line Items]        
Net carrying amount 2,831us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CoreDepositsMember
2,449us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CoreDepositsMember
4,230us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CoreDepositsMember
6,322us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CoreDepositsMember
Other [Member]        
Finite-Lived Intangible Assets [Line Items]        
Net carrying amount $ 0us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
$ 0us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
$ 0us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
$ 9us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember