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Guarantees (Tables) | 6 Months Ended
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Jun. 30, 2018
Guarantees [Abstract] |
Schedule of Guarantor Obligations | The following table presents the notional amount and fair value of Arrow's off-balance sheet commitments to extend credit and commitments under standby letters of credit as of June 30, 2018, December 31, 2017 and June 30, 2017:
Commitments to Extend Credit and Letters of Credit
| June 30, 2018 |  | December 31, 2017 |  | June 30, 2017
Notional Amount: |  |  |  |  |
Commitments to Extend Credit | $ | 324,173 |  |  | $ | 315,256 |  |  | $ | 290,818 |
Standby Letters of Credit | 3,941 |  |  | 3,526 |  |  | 3,373 |
Fair Value: |  |  |  |  |
Commitments to Extend Credit | $ | — |  |  | $ | — |  |  | $ | — |
Standby Letters of Credit | 11 |  |  | 23 |  |  | 25 |

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- Definition Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined) which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13467-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 + Details
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