XML 37 R60.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Loans Modified in Trouble Debt Restructurings (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 USD ($) contract loan portfolio_category | Dec. 31, 2018 USD ($) contract loan | Dec. 31, 2017 USD ($) contract loan
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of loan portfolio categories | portfolio_category | 4 |  |
Number of Loans | loan | 6 | 6 | 8
Pre-Modification Outstanding Recorded Investment | $ 68 | $ 82 | $ 1,279
Post-Modification Outstanding Recorded Investment | $ 68 | $ 82 | $ 1,279
Subsequent Default, Number of Contracts | contract | 0 | 0 | 0
Subsequent Default, Recorded Investment | $ 0 | $ 0 | $ 0
Commitments to lend additional funds to modified loans | $ 0 | $ 0 | $ 0
Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Loans | loan | 0 | 1 | 1
Pre-Modification Outstanding Recorded Investment | $ 0 | $ 38 | $ 503
Post-Modification Outstanding Recorded Investment | $ 0 | $ 38 | $ 503
Subsequent Default, Number of Contracts | contract | 0 | 0 | 0
Subsequent Default, Recorded Investment | $ 0 | $ 0 | $ 0
Commitments to lend additional funds to modified loans | $ 0 | $ 0 | $ 0
Commercial Real Estate |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Loans | loan | 0 | 0 | 1
Pre-Modification Outstanding Recorded Investment | $ 0 | $ 0 | $ 725
Post-Modification Outstanding Recorded Investment | $ 0 | $ 0 | $ 725
Subsequent Default, Number of Contracts | contract | 0 | 0 | 0
Subsequent Default, Recorded Investment | $ 0 | $ 0 | $ 0
Commitments to lend additional funds to modified loans | $ 0 | $ 0 | $ 0
Other Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Loans | loan | 6 | 5 | 6
Pre-Modification Outstanding Recorded Investment | $ 68 | $ 44 | $ 51
Post-Modification Outstanding Recorded Investment | $ 68 | $ 44 | $ 51
Subsequent Default, Number of Contracts | contract | 0 | 0 | 0
Subsequent Default, Recorded Investment | $ 0 | $ 0 | $ 0
Commitments to lend additional funds to modified loans | $ 0 | $ 0 | $ 0
Other Consumer | Minimum |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Principal repayment terms, period | 1 year |  |
Other Consumer | Maximum |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Principal repayment terms, period | 5 years |  |
Residential Portfolio Segment |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Loans | loan | 0 | 0 | 0
Pre-Modification Outstanding Recorded Investment | $ 0 | $ 0 | $ 0
Post-Modification Outstanding Recorded Investment | $ 0 | $ 0 | $ 0
Subsequent Default, Number of Contracts | contract | 0 | 0 | 0
Subsequent Default, Recorded Investment | $ 0 | $ 0 | $ 0
Commitments to lend additional funds to modified loans | $ 0 | $ 0 | $ 0
Automobile Loan | Minimum |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Principal repayment terms, period | 3 years |  |
Automobile Loan | Maximum |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Principal repayment terms, period | 7 years |  |

X
- Definition Financing Receivable, Number Of Loan Portfolio Categories + References No definition available. + Details
Name: | arow_FinancingReceivableNumberOfLoanPortfolioCategories
Namespace Prefix: | arow_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Principal Repayment Terms, Period + References No definition available. + Details
Name: | arow_PrincipalRepaymentTermsPeriod
Namespace Prefix: | arow_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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_FinancingReceivableModificationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after troubled debt restructuring, of modified financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, before troubled debt restructuring, of financing receivable to be modified. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953682-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953682-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of unfunded portion of contractual agreement to lend funds to borrower for financing receivable modified as troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18794-111554 + Details
Name: | us-gaap_LoansAndLeasesReceivableImpairedCommitmentToLend
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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: |

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

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
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_AutomobileLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |