Fair Values (Tables)

12 Months Ended

Dec. 31, 2012

Dec. 31, 2011

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

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 of Assets and Liabilities Measured on a Recurring Basis:	Fair Value		Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
December 31, 2012
Securities Available-for Sale:
U.S. Agency Obligations	$	122,457	$	—	$	122,457	$	—
State and Municipal Obligations	84,838		—		84,838		—
Mortgage-Backed Securities - Residential	261,804		—		261,804		—
Corporate and Other Debt Securities	8,451		—		8,451		—
Mutual Funds and Equity Securities	1,148		—		1,148		—
Total Securities Available-for-Sale	$	478,698	$	—	$	478,698	$	—
December 31, 2011
Securities Available-for Sale:
U.S. Agency Obligations	$	116,393	$	—	$	116,393	$	—
State and Municipal Obligations	44,999		—		44,999		—
Mortgage-Backed Securities - Residential	392,712		—		392,712		—
Corporate and Other Debt Securities	1,015		—		1,015		—
Mutual Funds and Equity Securities	1,419		257		1,162		—
Total Securities Available-for Sale	$	556,538	$	257	$	556,281	$	—

Fair Value of Assets and Liabilities Measured on a Nonrecurring Basis:
December 31, 2012
Collateral Dependent Impaired Loans	$	1,020	$	—	$	—	$	1,020
Other Real Estate Owned and Repossessed Assets, Net	$	1,034	$	—	$	—	$	1,034
December 31, 2011
Other Real Estate Owned and Repossessed Assets, Net	$	516	$	—	$	—	$	516

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

Unobservable Input Reconciliation of the Fair Value of Assets Measured on a Recurring Basis

The following table is a reconciliation of the beginning and ending balances for 2011 of the Level 3 assets of Arrow, i.e., as to which fair value is measured using significant unobservable inputs, all of which are securities available-for-sale:



Roll-Forward of the Fair Value of Level 3 Assets Measured on a Recurring Basis
	Available-for-Sale Securities
Beginning Balance, January 1, 2011	$	283
Principal payment received	(331		)
Total net gains (realized/unrealized) included in other comprehensive income	48
Ending Balance, December 31, 2011	$	—

Fair Value, by Balance Sheet Grouping [Table Text Block]

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 Amount		Fair Value		Level 1		Level 2		Level 3
December 31, 2012
Cash and Cash Equivalents	$	48,832	$	48,832	$	48,832	$	—	$	—
Securities Available-for-Sale	478,698		478,698		—		478,698		—
Securities Held-to-Maturity	239,803		248,252		—		248,252		—
Federal Home Loan Bank and Federal Reserve Bank Stock	5,792		5,792		5,792		—		—
Net Loans	1,157,043		1,192,628		—		—		1,192,628
Accrued Interest Receivable	5,486		5,486		5,486		—		—
Deposits	1,731,155		1,732,894		1,447,882		285,012		—
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	12,678		12,678		12,678		—		—
Federal Home Loan Bank Term Advances	59,000		60,312		29,000		31,312		—
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000		20,000		—		20,000		—
Accrued Interest Payable	584		584		584		—		—

December 31, 2011
Cash and Cash Equivalents	$	43,736	$	43,736	$	43,736	$	—	$	—
Securities Available-for-Sale	556,538		556,538		257		556,281		—
Securities Held-to-Maturity	150,688		159,059		—		159,059		—
Federal Home Loan Bank and Federal Reserve Bank Stock	6,722		6,722		6,722		—		—
Net Loans	1,116,454		1,141,310		—		—		1,141,310
Accrued Interest Receivable	6,082		6,082		6,082		—		—
Deposits	1,644,046		1,650,849		1,291,388		359,461		—
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	26,293		26,293		26,293		—		—
Federal Home Loan Bank Term Advances	82,000		83,553		—		83,553		—
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000		20,000		—		20,000		—
Accrued Interest Payable	1,147		1,147		1,147		—		—

- Definition

Tabular disclosure related to assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a recurring and/or nonrecurring basis in periods after initial recognition. Disclosures include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3) as well as transfers between levels 1 and 2.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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- Definition

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

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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), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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