XML 87 R72.htm IDEA: XBRL DOCUMENT v3.25.0.1

LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES (portfolio of non-risk-rated loans by class and delinquency status) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 11,354,656	$ 10,810,455
Financing Receivable, Allowance for Credit Loss, Writeoff	8,366	5,707	$ 2,713
Financial Asset, Not Past Due
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, before Allowance for Credit Loss	11,299,224	10,767,291
30 to 59 Days Past Due [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, before Allowance for Credit Loss	20,739	15,936
60 to 89 Days Past Due [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, before Allowance for Credit Loss	8,102	10,280
90 Days or More Past Due [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, before Allowance for Credit Loss	26,591	16,948
Small Balance CRE [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	66,708	83,077
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	87,829	194,213
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	198,461	215,550
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	209,983	164,102
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	166,244	121,755
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	484,567	399,425
Financing Receivable, Revolving	0	378
Financing Receivable, before Allowance for Credit Loss	1,213,792	1,178,500
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Revolving, Writeoff	0
Financing Receivable, Allowance for Credit Loss, Writeoff	0
Small Balance CRE [Member] | Financial Asset, Not Past Due
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	66,708	83,077
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	87,829	194,213
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	198,461	215,550
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	209,983	163,689
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	166,244	121,596
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	484,567	399,025
Financing Receivable, Revolving	0	378
Financing Receivable, before Allowance for Credit Loss	1,213,792	1,177,528
Small Balance CRE [Member] | 30 to 59 Days Past Due [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	159
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	400
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	559
Small Balance CRE [Member] | 60 to 89 Days Past Due [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Small Balance CRE [Member] | 90 Days or More Past Due [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	413
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	413
Small Credit-Scored Business Loans [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	209,708	197,196
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	173,347	277,128
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	239,277	173,482
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	147,465	84,432
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	69,904	62,321
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	124,027	97,206
Financing Receivable, Revolving	140,389	130,389
Financing Receivable, before Allowance for Credit Loss	1,104,117	1,022,154
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	82
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	122
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	522
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	575
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	47
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	587
Financing Receivable, Revolving, Writeoff	0
Financing Receivable, Allowance for Credit Loss, Writeoff	1,935
Small Credit-Scored Business Loans [Member] | Financial Asset, Not Past Due
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	209,692	197,138
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	172,327	276,888
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	236,769	172,286
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	146,220	84,320
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	69,795	61,613
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	123,250	96,269
Financing Receivable, Revolving	139,836	129,998
Financing Receivable, before Allowance for Credit Loss	1,097,889	1,018,512
Small Credit-Scored Business Loans [Member] | 30 to 59 Days Past Due [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	16	16
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	62	171
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,084	1,048
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	650	52
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	104	169
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	523	287
Financing Receivable, Revolving	523	307
Financing Receivable, before Allowance for Credit Loss	2,962	2,050
Small Credit-Scored Business Loans [Member] | 60 to 89 Days Past Due [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	18
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	823	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	75	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	252	60
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	79
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	88	393
Financing Receivable, Revolving	30	83
Financing Receivable, before Allowance for Credit Loss	1,268	633
Small Credit-Scored Business Loans [Member] | 90 Days or More Past Due [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	24
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	135	69
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,349	148
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	343	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	5	460
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	166	257
Financing Receivable, Revolving	0	1
Financing Receivable, before Allowance for Credit Loss	1,998	959
One- to four-family residential [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	221,530	362,703
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	310,824	590,494
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	544,098	265,485
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	250,085	57,527
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	53,828	32,059
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	210,895	209,569
Financing Receivable, Revolving	0	209
Financing Receivable, before Allowance for Credit Loss	1,591,260	1,518,046
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Revolving, Writeoff	0
Financing Receivable, Allowance for Credit Loss, Writeoff	0	42	$ 0
One- to four-family residential [Member] | Financial Asset, Not Past Due
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	219,254	360,797
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	306,523	586,167
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	537,271	262,414
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	246,070	56,436
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	51,761	31,275
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	207,017	206,247
Financing Receivable, Revolving	0	209
Financing Receivable, before Allowance for Credit Loss	1,567,896	1,503,545
One- to four-family residential [Member] | 30 to 59 Days Past Due [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,743	846
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,731	3,087
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	2,733	979
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	762	511
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	469	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,818	1,441
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	9,256	6,864
One- to four-family residential [Member] | 60 to 89 Days Past Due [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	533	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	570	540
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,635	510
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	270	388
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	442	151
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,099	790
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	4,549	2,379
One- to four-family residential [Member] | 90 Days or More Past Due [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	1,060
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	2,000	700
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	2,459	1,582
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	2,983	192
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,156	633
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	961	1,091
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	9,559	5,258
Home Equity Line of Credit [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	4,551	5,003
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,841	3,010
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	8,939	1,933
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	2,813	2,309
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	2,433	1,421
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	8,320	6,214
Financing Receivable, Revolving	596,783	568,813
Financing Receivable, before Allowance for Credit Loss	625,680	588,703
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	58
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	11
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	1
Financing Receivable, Revolving, Writeoff	110
Financing Receivable, Allowance for Credit Loss, Writeoff	180
Home Equity Line of Credit [Member] | Financial Asset, Not Past Due
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	4,551	5,003
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	975	2,594
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	6,884	1,564
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	1,964	1,200
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	2,243	1,177
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	6,582	4,678
Financing Receivable, Revolving	595,115	566,249
Financing Receivable, before Allowance for Credit Loss	618,314	582,465
Home Equity Line of Credit [Member] | 30 to 59 Days Past Due [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	100	51
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,571	93
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	98	66
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	175
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	335	324
Financing Receivable, Revolving	1,532	2,063
Financing Receivable, before Allowance for Credit Loss	3,636	2,772
Home Equity Line of Credit [Member] | 60 to 89 Days Past Due [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	237	98
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	561	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	50
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	384	246
Financing Receivable, Revolving	136	445
Financing Receivable, before Allowance for Credit Loss	1,318	839
Home Equity Line of Credit [Member] | 90 Days or More Past Due [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	766	365
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	247	178
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	190	1,043
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	190	19
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,019	966
Financing Receivable, Revolving	0	56
Financing Receivable, before Allowance for Credit Loss	2,412	2,627
Consumer Loan [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	9,336	10,773
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	6,348	31,894
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	25,453	10,027
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	8,282	6,936
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	5,393	4,471
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	17,463	18,007
Financing Receivable, Revolving	23,445	28,573
Financing Receivable, before Allowance for Credit Loss	95,720	110,681
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	9
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	50
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	105
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	71
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	37
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	211
Financing Receivable, Revolving, Writeoff	1,247
Financing Receivable, Allowance for Credit Loss, Writeoff	1,730
Consumer Loan [Member] | Financial Asset, Not Past Due
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	9,329	10,756
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	6,333	31,836
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	25,334	9,961
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	8,243	6,906
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	5,390	4,441
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	17,374	17,920
Financing Receivable, Revolving	23,185	28,207
Financing Receivable, before Allowance for Credit Loss	95,188	110,027
Consumer Loan [Member] | 30 to 59 Days Past Due [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	5	5
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	54	62
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	3	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	88	81
Financing Receivable, Revolving	166	269
Financing Receivable, before Allowance for Credit Loss	316	417
Consumer Loan [Member] | 60 to 89 Days Past Due [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	2	12
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	15	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	20	4
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	39	2
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	20
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1	6
Financing Receivable, Revolving	94	97
Financing Receivable, before Allowance for Credit Loss	171	141
Consumer Loan [Member] | 90 Days or More Past Due [Member]
Schedule non-risk-rated loans by class and delinquency status [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	58
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	45	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	28
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	10
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	$ 45	$ 96

X

- Definition

Schedule non-risk-rated loans by class and delinquency status [Line Items]

+ References

No definition available.

+ Details

Name:	banr_ScheduleNonRiskRatedLoansByClassAndDelinquencyStatusLineItems
Namespace Prefix:	banr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of writeoff of financing receivable, charged against allowance for credit loss.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11B
-Subparagraph (c)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-11B

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amortized cost of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amortized cost of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amortized cost of financing receivable originated in current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amortized cost of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of writeoff of financing receivable originated more than five years before current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amortized cost of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amortized cost of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amortized cost of financing receivable that can be withdrawn, repaid, and redrawn.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableRevolving
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of writeoff of financing receivable that can be withdrawn, repaid, and redrawn.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableRevolvingWriteoff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of writeoff of financing receivable originated four years before current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of writeoff of financing receivable originated three years before current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of writeoff of financing receivable originated in current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableYearOneOriginatedCurrentFiscalYearWriteoff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of writeoff of financing receivable originated two years before current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of writeoff of financing receivable originated in fiscal year before current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-13

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-7A

Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 29
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-29

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph a
-Subparagraph (1)
-Publisher SEC

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph a
-Subparagraph (2)
-Publisher SEC

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Regulation S-K (SK)
-Number 229
-Section 1404
-Paragraph a
-Publisher SEC

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 80
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-80

Reference 8: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-14

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-5

+ Details

Name:	us-gaap_NotesReceivableGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancialAssetNotPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables30To59DaysPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables60To89DaysPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=banr_SmallBalanceCREMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=banr_SmallCreditScoredBusinessLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=banr_OneToFourFamilyResidentialMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConsumerLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: