XML 54 R43.htm IDEA: XBRL DOCUMENT
v3.21.2

Loans - Allowance for Loan Losses (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 USD ($) loan | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) loan | Jun. 30, 2020 USD ($) | Dec. 31, 2020 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Financing receivable, allowance for credit loss, excluding accrued interest | $ 27,010 | $ 26,300 | $ 27,010 | $ 26,300 | $ 29,232
Financing receivable, allowance for credit loss, period increase (decrease) |  |  | (263) |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Allowance for Loan Losses, Beginning balance | 26,840 | 23,637 | 29,232 |  |
Charge-offs | (443) | (487) | (1,076) |  |
Recoveries | 350 | 110 | 539 |  |
Provision | 263 | 3,040 | (385) | 5,812 |
Allowance for Loan Losses, Ending balance | $ 27,010 | 26,300 | $ 27,010 | 26,300 |
Number of loans individually evaluated for impairment | loan | 6 |  | 6 |  |
Number of loans with an allowance for credit loss on loans individually evaluated for impairment | loan | 1 |  | 1 |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Ending Loan Balance - Collectively Evaluated | $ 2,639,492 | 2,559,662 | $ 2,639,492 | 2,559,662 | 2,592,327
Allowance for loan losses - Loans Collectively Evaluated | 26,394 | 26,244 | 26,394 | 26,244 | 29,191
Ending Loan Balance - Individually Evaluated | 4,590 | 2,253 | 4,590 | 2,253 | 2,703
Allowance for loan losses - Loans Individually Evaluated | 616 | 56 | 616 | 56 | 41
Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Financing receivable, allowance for credit loss, excluding accrued interest |  |  |  |  | (1,300)
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Allowance for Loan Losses, Beginning balance |  |  | (1,300) |  |
Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Financing receivable, allowance for credit loss, excluding accrued interest |  |  |  |  | 27,932
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Allowance for Loan Losses, Beginning balance |  |  | 27,932 |  |
Consumer |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Financing receivable, allowance for credit loss, excluding accrued interest | 2,443 | 10,639 | 2,443 | 10,639 | 11,562
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Allowance for Loan Losses, Beginning balance | 2,429 | 10,004 | 11,562 |  |
Charge-offs | (426) | (431) | (1,053) |  |
Recoveries | 350 | 107 | 539 |  |
Provision | 90 | 959 | 778 |  |
Allowance for Loan Losses, Ending balance | 2,443 | 10,639 | 2,443 | 10,639 |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Ending Loan Balance - Collectively Evaluated | 892,549 | 828,377 | 892,549 | 828,377 | 859,657
Allowance for loan losses - Loans Collectively Evaluated | 2,443 | 10,639 | 2,443 | 10,639 | 11,562
Ending Loan Balance - Individually Evaluated | 0 | 116 | 0 | 116 | 111
Allowance for loan losses - Loans Individually Evaluated | 0 | 0 | 0 | 0 | 0
Consumer | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Financing receivable, allowance for credit loss, excluding accrued interest |  |  |  |  | (9,383)
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Allowance for Loan Losses, Beginning balance |  |  | (9,383) |  |
Consumer | Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Financing receivable, allowance for credit loss, excluding accrued interest |  |  |  |  | 2,179
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Allowance for Loan Losses, Beginning balance |  |  | 2,179 |  |
Residential |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Financing receivable, allowance for credit loss, excluding accrued interest | 8,720 | 5,383 | 8,720 | 5,383 | 5,507
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Allowance for Loan Losses, Beginning balance | 8,170 | 4,929 | 5,507 |  |
Charge-offs | 0 | (50) | (3) |  |
Recoveries | 0 | 0 | 0 |  |
Provision | 550 | 504 | (719) |  |
Allowance for Loan Losses, Ending balance | 8,720 | 5,383 | 8,720 | 5,383 |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Ending Loan Balance - Collectively Evaluated | 909,824 | 922,767 | 909,824 | 922,767 | 921,504
Allowance for loan losses - Loans Collectively Evaluated | 8,720 | 5,346 | 8,720 | 5,346 | 5,485
Ending Loan Balance - Individually Evaluated | 677 | 952 | 677 | 952 | 1,417
Allowance for loan losses - Loans Individually Evaluated | 0 | 37 | 0 | 37 | 22
Residential | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Financing receivable, allowance for credit loss, excluding accrued interest |  |  |  |  | 3,935
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Allowance for Loan Losses, Beginning balance |  |  | 3,935 |  |
Residential | Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Financing receivable, allowance for credit loss, excluding accrued interest |  |  |  |  | 9,442
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Allowance for Loan Losses, Beginning balance |  |  | 9,442 |  |
Commercial |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Financing receivable, allowance for credit loss, excluding accrued interest | 2,241 | 1,917 | 2,241 | 1,917 | 2,173
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Allowance for Loan Losses, Beginning balance | 4,297 | 1,639 | 2,173 |  |
Charge-offs | (17) | (6) | (20) |  |
Recoveries | 0 | 3 | 0 |  |
Provision | (2,039) | 281 | (1,996) |  |
Allowance for Loan Losses, Ending balance | 2,241 | 1,917 | 2,241 | 1,917 |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Ending Loan Balance - Collectively Evaluated | 242,790 | 276,620 | 242,790 | 276,620 | 240,507
Allowance for loan losses - Loans Collectively Evaluated | 2,241 | 1,898 | 2,241 | 1,898 | 2,154
Ending Loan Balance - Individually Evaluated | 0 | 51 | 0 | 51 | 47
Allowance for loan losses - Loans Individually Evaluated | 0 | 19 | 0 | 19 | 19
Commercial | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Financing receivable, allowance for credit loss, excluding accrued interest |  |  |  |  | 2,084
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Allowance for Loan Losses, Beginning balance |  |  | 2,084 |  |
Commercial | Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Financing receivable, allowance for credit loss, excluding accrued interest |  |  |  |  | 4,257
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Allowance for Loan Losses, Beginning balance |  |  | 4,257 |  |
Commercial Real Estate |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Financing receivable, allowance for credit loss, excluding accrued interest | 13,606 | 8,361 | 13,606 | 8,361 | 9,990
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Allowance for Loan Losses, Beginning balance | 11,944 | 7,065 | 9,990 |  |
Charge-offs | 0 | 0 | 0 |  |
Recoveries | 0 | 0 | 0 |  |
Provision | 1,662 | 1,296 | 1,552 |  |
Allowance for Loan Losses, Ending balance | 13,606 | 8,361 | 13,606 | 8,361 |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Ending Loan Balance - Collectively Evaluated | 594,329 | 531,898 | 594,329 | 531,898 | 570,659
Allowance for loan losses - Loans Collectively Evaluated | 12,990 | 8,361 | 12,990 | 8,361 | 9,990
Ending Loan Balance - Individually Evaluated | 3,913 | 1,134 | 3,913 | 1,134 | 1,128
Allowance for loan losses - Loans Individually Evaluated | $ 616 | $ 0 | 616 | $ 0 | 0
Commercial Real Estate | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Financing receivable, allowance for credit loss, excluding accrued interest |  |  |  |  | 2,064
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Allowance for Loan Losses, Beginning balance |  |  | 2,064 |  |
Commercial Real Estate | Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Financing receivable, allowance for credit loss, excluding accrued interest |  |  |  |  | $ 12,054
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Allowance for Loan Losses, Beginning balance |  |  | $ 12,054 |  |

X
- Definition Financing Receivable, Allowance for Credit Losses, Number Of Loans Individually Evaluated For Impairment + References No definition available. + Details
Name: | arow_FinancingReceivableAllowanceForCreditLossesNumberOfLoansIndividuallyEvaluatedForImpairment
Namespace Prefix: | arow_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Financing Receivable, Number Of Loans Individually Evaluated For Impairment + References No definition available. + Details
Name: | arow_FinancingReceivableNumberOfLoansIndividuallyEvaluatedForImpairment
Namespace Prefix: | arow_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossAdditionalInformationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase (decrease) in allowance for credit loss on financing receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase in allowance for credit loss on financing receivable from recovery. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward
Namespace Prefix: | us-gaap_
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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of credit loss expense (reversal of expense) for financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(11)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
Name: | us-gaap_ProvisionForLoanLossesExpensed
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | srt_CumulativeEffectPeriodOfAdoptionAxis=srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CumulativeEffectPeriodOfAdoptionAxis=srt_CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |