Label	Element	Value
Securities, available-for-sale, transferred to held-to-maturity	banr_SecuritiesAvailableForSaleTransferredToHeldToMaturity	$ 462,159,000
Securities, available-for-sale, transferred to held-to-maturity	banr_SecuritiesAvailableForSaleTransferredToHeldToMaturity	0
Transfer of Loans Held-for-sale to Portfolio Loans	us-gaap_TransferOfLoansHeldForSaleToPortfolioLoans1	13,420,000
Transfer of Loans Held-for-sale to Portfolio Loans	us-gaap_TransferOfLoansHeldForSaleToPortfolioLoans1	$ 0

Value of loans held-for-sale transferred to loans held in the entity's portfolio in noncash transactions.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4332-108586

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4313-108586

Name:	us-gaap_TransferOfLoansHeldForSaleToPortfolioLoans1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration