Fair Values (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements, Recurring and Nonrecurring

The table below presents the financial instrument's fair value and the amounts within the fair value hierarchy based on the lowest level of input that is significant to the fair value measurement:

Fair Value of Assets and Liabilities Measured on a Recurring and Nonrecurring Basis
			Fair Value Measurements at Reporting Date Using:
	Fair Value		Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Fair Value of Assets and Liabilities Measured on a Recurring Basis:
March 31, 2019
Securities Available-for Sale:
U.S. Government & Agency Obligations	$	35,383	$	—	$	35,383	$	—
State and Municipal Obligations	1,116		—		1,116		—
Mortgage-Backed Securities	261,513		—		261,513		—
Corporate and Other Debt Securities	800		—		800		—
Total Securities Available-for-Sale	298,812		—		298,812		—
Equity Securities	1,850		—		1,850		—
Total Securities Measured on a Recurring Basis	$	300,662	$	—	$	300,662	$	—
December 31, 2018
Securities Available-for Sale:
U.S. Government & Agency Obligations	$	46,765	$	—	$	46,765	$	—
State and Municipal Obligations	1,195		—		1,195		—
Mortgage-Backed Securities	268,775		—		268,775		—
Corporate and Other Debt Securities	800		—		800		—
Total Securities Available-for-Sale	317,535				317,535
Equity Securities	1,774		—		1,774		—
Total Securities Measured on a Recurring Basis	$	319,309	$	—	$	319,309	$	—
March 31, 2018
Securities Available-for Sale:
U.S. Government & Agency Obligations	$	59,657	$	—	$	59,657	$	—
State and Municipal Obligations	9,743		—		9,743		—
Mortgage-Backed Securities	235,389		—		235,389		—
Corporate and Other Debt Securities	800		—		800		—
Total Securities Available-for-Sale	305,589				305,589
Equity Securities	1,579		—		1,579		—
Total Securities Measured on a Recurring Basis	$	307,168	$	—	$	307,168	$	—

	Fair Value		Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Life-to-Date Gains (Losses)
Fair Value of Assets and Liabilities Measured on a Nonrecurring Basis:
March 31, 2019
Collateral Dependent Impaired Loans	$	684	$	—	$	—	$	684	$	—
Other Real Estate Owned and Repossessed Assets, Net	1,445		—		—		1,445		(826		)
December 31, 2018
Collateral Dependent Impaired Loans	$	—	$	—	$	—	$	—	$	—
Other Real Estate Owned and Repossessed Assets, Net	1,260		—		—		1,260		(669		)
March 31, 2018
Collateral Dependent Impaired Loans	$	1,295	$	—	$	—	$	1,295	$	(58	)
Other Real Estate Owned and Repossessed Assets, Net	1,647		—		—		1,647		(582		)

Fair Value, by Balance Sheet Grouping

The following table presents a summary of the carrying amount, the fair value or an amount approximating fair value and the fair value hierarchy of Arrow’s financial instruments:

Schedule of Fair Values by Balance Sheet Grouping
					Fair Value Hierarchy
	Carrying Value		Fair Value		Level 1		Level 2		Level 3
March 31, 2019
Cash and Cash Equivalents	$	61,229	$	61,229	$	61,229	$	—	$	—
Securities Available-for-Sale	298,812		298,812		—		298,812		—
Securities Held-to-Maturity	279,400		280,414		—		280,414		—
Equity Securities	1,850		1,850		—		1,850		—
Federal Home Loan Bank and Federal   Reserve Bank Stock	7,878		7,878		—		7,878		—
Net Loans	2,214,835		2,164,298		—		—		2,164,298
Accrued Interest Receivable	8,180		8,180		—		8,180		—
Deposits	2,490,097		2,484,479		—		2,484,479		—
Federal Funds Purchased and Securities   Sold Under Agreements to Repurchase	58,407		58,407		—		58,407		—
Federal Home Loan Bank Overnight Advances	74,500		74,500		—		74,500		—
Federal Home Loan Bank Term Advances	35,000		34,805		—		34,805		—
Junior Subordinated Obligations Issued   to Unconsolidated Subsidiary Trusts	20,000		20,000		—		20,000		—
Accrued Interest Payable	737		737		—		737		—
December 31, 2018
Cash and Cash Equivalents	$	84,239	$	84,239	$	84,239	$	—	$	—
Securities Available-for-Sale	317,535		317,535		—		317,535		—
Securities Held-to-Maturity	283,476		280,338		—		280,338		—
Equity Securities	1,774		1,774				1,774
Federal Home Loan Bank and Federal   Reserve Bank Stock	15,506		15,506		—		15,506		—
Net Loans	2,176,019		2,114,372		—		—		2,114,372
Accrued Interest Receivable	7,035		7,035		—		7,035		—
Deposits	2,345,584		2,338,410		—		2,338,410		—
Federal Funds Purchased and Securities   Sold Under Agreements to Repurchase	54,659		54,659		—		54,659		—
Federal Home Loan Bank Overnight Advances	234,000		234,000		—		234,000		—
Federal Home Loan Bank Term Advances	45,000		44,652		—		44,652		—
Junior Subordinated Obligations Issued   to Unconsolidated Subsidiary Trusts	20,000		20,000		—		20,000		—
Accrued Interest Payable	570		570		—		570		—
March 31, 2018
Cash and Cash Equivalents	$	100,272	$	100,272	$	100,272	$	—	$	—
Securities Available-for-Sale	305,589		305,589		—		305,589		—
Securities Held-to-Maturity	330,124		324,937		—		324,937		—
Equity Securities	1,579		1,579		—		1,579
Federal Home Loan Bank and Federal   Reserve Bank Stock	4,780		4,780		—		4,780		—
Net Loans	1,973,980		1,915,978		—		—		1,915,978
Accrued Interest Receivable	7,662		7,692		—		7,692		—
Deposits	2,411,273		2,402,122		—		2,402,122		—
Federal Funds Purchased and Securities   Sold Under Agreements to Repurchase	74,957		74,957		—		74,957		—
Federal Home Loan Bank Term Advances	45,000		44,484		—		44,484		—
Junior Subordinated Obligations Issued   to Unconsolidated Subsidiary Trusts	20,000		20,000		—		20,000		—
Accrued Interest Payable	361		361		—		361		—