Loans (Tables)

12 Months Ended

Dec. 31, 2014

Loans and Leases Receivable Disclosure [Abstract]

Past Due Financing Receivables [Table Text Block]

Loan Categories and Past Due Loans

The following table presents loan balances outstanding as of December 31, 2014 and December 31, 2013 and an analysis of the recorded investment in loans that are past due at these dates.  Generally, Arrow considers a loan past due 30 or more days if the borrower is two or more payments past due.

Schedule of Past Due Loans by Loan Category
			Commercial		Commercial		Other
	Commercial		Construction		Real Estate		Consumer		Automobile		Residential		Total
December 31, 2014
Loans Past Due 30-59 Days	$	124	$	—	$	432	$	30	$	4,137	$	482	$	5,205
Loans Past Due 60-89 Days	154		—		7		4		1,221		1,495		2,881
Loans Past Due 90 or More Days	345		—		1,832		3		203		2,999		5,382
Total Loans Past Due	623		—		2,271		37		5,561		4,976		13,468
Current Loans	98,888		18,815		319,026		7,628		423,815		531,628		1,399,800
Total Loans	$	99,511	$	18,815	$	321,297	$	7,665	$	429,376	$	536,604	$	1,413,268
Loans 90 or More Days Past Due and Still Accruing Interest	$	—	$	—	$	—	$	—	$	—	$	537	$	537
Nonaccrual Loans	$	473	$	—	$	2,071	$	4	$	411	$	3,940	$	6,899
December 31, 2013
Loans Past Due 30-59 Days	$	304	$	—	$	200	$	37	$	3,233	$	529	$	4,303
Loans Past Due 60-89 Days	601		—		1,200		19		1,041		1,527		4,388
Loans Past Due 90 or more Days	177		—		2,034		—		98		3,113		5,422
Total Loans Past Due	1,082		—		3,434		56		4,372		5,169		14,113
Current Loans	86,811		27,815		284,685		7,593		389,832		455,623		1,252,359
Total Loans	$	87,893	$	27,815	$	288,119	$	7,649	$	394,204	$	460,792	$	1,266,472
Loans 90 or More Days Past Due and Still Accruing Interest	$	28	$	—	$	—	$	—	$	—	$	624	$	652
Nonaccrual Loans	$	352	$	—	$	2,048	$	—	$	219	$	3,860	$	6,479

Allowance for Credit Losses on Financing Receivables [Table Text Block]

Allowance for Loan Losses

The following table presents a rollforward of the allowance for loan losses and other information pertaining to the allowance for loan losses:

Allowance for Loan Losses
				Commercial			Commercial			Other
	Commercial			Construction			Real Estate			Consumer			Automobile			Residential			Unallocated			Total
Rollfoward of the Allowance for Loan Losses for the Year Ended:
December 31, 2013	$	1,886		$	417		$	3,545		$	272		$	4,206		$	3,026		$	1,082		$	14,434
Charge-offs	(212		)	—			—			(41		)	(677		)	(91		)				(1,021		)
Recoveries	86			—			—			6			217			—						309
Provision	340			(135		)	301			22			1,205			434			(319		)	1,848
December 31, 2014	$	2,100		$	282		$	3,846		$	259		$	4,951		$	3,369		$	763		$	15,570
December 31, 2012	$	2,344		$	601		$	3,050		$	304		$	4,536		$	3,405		$	1,058		$	15,298
Charge-offs	(926		)	—			(11		)	(28		)	(431		)	(15		)	—			(1,411		)
Recoveries	88			—			—			3			256			—			—			347
Provision	380			(184		)	506			(7		)	(155		)	(364		)	24			200
December 31, 2013	$	1,886		$	417		$	3,545		$	272		$	4,206		$	3,026		$	1,082		$	14,434
December 31, 2011	$	1,927		$	602		$	3,136		$	350		$	4,496		$	3,414		$	1,078		$	15,003
Charge-offs	(90		)	—			(206		)	(52		)	(401		)	(33		)	—			(782		)
Recoveries	23			—			—			9			200			—			—			232
Provision	484			(1		)	120			(3		)	241			24			(20		)	845
December 31, 2012	$	2,344		$	601		$	3,050		$	304		$	4,536		$	3,405		$	1,058		$	15,298

Allowance for Loan Losses
			Commercial		Commercial		Other
	Commercial		Construction		Real Estate		Consumer		Automobile		Residential		Unallocated		Total
December 31, 2014
Allowance for loan losses - Loans Individually Evaluated for Impairment	$	—	$	—	$	—	$	—	$	—	$	109	$	—	$	109
Allowance for loan losses - Loans Collectively Evaluated for Impairment	$	2,100	$	282	$	3,846	$	259	$	4,951	$	3,260	$	763	$	15,461
Ending Loan Balance - Individually Evaluated for Impairment	$	494	$	—	$	1,492	$	—	$	118	$	2,237	$	—	$	4,341
Ending Loan Balance - Collectively Evaluated for Impairment	$	99,017	$	18,815	$	319,805	$	7,665	$	429,258	$	534,367	$	—	$	1,408,927
December 31, 2013
Allowance for loan losses - Loans Individually Evaluated for Impairment	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Allowance for loan losses - Loans Collectively Evaluated for Impairment	$	1,886	$	417	$	3,545	$	272	$	4,206	$	3,026	$	1,082	$	14,434
Ending Loan Balance - Individually Evaluated for Impairment	$	221	$	—	$	1,785	$	—	$	173	$	2,309	$	—	$	4,488
Ending Loan Balance - Collectively Evaluated for Impairment	$	87,672	$	27,815	$	286,334	$	7,649	$	394,031	$	458,483	$	—	$	1,261,984

Financing Receivable Credit Quality Indicators [Table Text Block]

Loan Credit Quality Indicators

The following table presents the credit quality indicators by loan category at December 31, 2014 and December 31, 2013:

Loan Credit Quality Indicators
			Commercial		Commercial		Other
	Commercial		Construction		Real Estate		Consumer		Automobile		Residential		Total
December 31, 2014
Credit Risk Profile by Creditworthiness Category:
Satisfactory	$	85,949	$	18,815	$	298,932							$	403,696
Special Mention	2,442		—		3,718								6,160
Substandard	11,120		—		18,647								29,767
Doubtful	—		—		—								—
Credit Risk Profile Based on Payment Activity:
Performing							$	7,661	$	428,965	$	532,127	968,753
Nonperforming							4		411		4,477		4,892
December 31, 2013
Credit Risk Profile by Creditworthiness Category:
Satisfactory	$	79,966	$	27,815	$	267,612							$	375,393
Special Mention	204		—		634								838
Substandard	7,723		—		19,873								27,596
Doubtful	—		—		—								—
Credit Risk Profile Based on Payment Activity:
Performing							$	7,649	$	393,985	$	456,308	$	857,942
Nonperforming							—		219		4,484		4,703

Impaired Financing Receivables [Table Text Block]

Impaired Loans

The following table presents information on impaired loans based on whether the impaired loan has a recorded allowance or no recorded allowance:

Impaired Loans
			Commercial		Commercial		Other
	Commercial		Construction		Real Estate		Consumer		Automobile		Residential		Total
December 31, 2014
Recorded Investment:
With No Related Allowance	$	494	$	—	$	1,492	$	—	$	118	$	1,678	$	3,782
With a Related Allowance	—		—		—		—		—		559		559
Unpaid Principal Balance:
With No Related Allowance	$	494	$	—	$	1,492	$	—	$	118	$	1,678	$	3,782
With a Related Allowance	—		—		—		—		—		559		559
December 31, 2013
Recorded Investment:
With No Related Allowance	$	221	$	—	$	1,785	$	—	$	173	$	2,309	$	4,488
With a Related Allowance	—		—		—		—		—		—		$	—
Unpaid Principal Balance:
With No Related Allowance	$	221	$	—	$	1,785	$	—	$	173	$	2,309	$	4,488
With a Related Allowance	—		—		—		—		—		—		$	—
For the Year-To-Date Period Ended:
December 31, 2014
Average Recorded Balance:
With No Related Allowance	$	348	$	—	$	1,492	$	—	$	121	$	1,673	$	3,634
With a Related Allowance	—		—		—		—		—		546		$	546
Interest Income Recognized:
With No Related Allowance	$	11	$	—	$	—	$	—	$	7	$	1	$	19
With a Related Allowance	—		—		—		—		—		—		—
Cash Basis Income:
With No Related Allowance	$	—	$	—	$	—	$	—	$	—	$	—	$	—
With a Related Allowance	—		—		—		—		—		—		—
Related Allowance	—		—		—		—		—		109		$	109
December 31, 2013
Average Recorded Balance:
With No Related Allowance	$	133	$	—	$	2,157	$	—	$	188	$	1,700	$	4,178
With a Related Allowance	694		—		—		—		—		—		$	694
Interest Income Recognized:
With No Related Allowance	$	4	$	—	$	—	$	—	$	9	$	8	$	21
With a Related Allowance	—		—		—		—		—		—		$	—
Cash Basis Income:
With No Related Allowance	$	—	$	—	$	—	$	—	$	—	$	—	$	—
With a Related Allowance	—		—		—		—		—		—		$	—
December 31, 2012
Average Recorded Balance:
With No Related Allowance	$	56	$	—	$	2,241	$	—	$	236	$	1,599	$	4,132
With a Related Allowance	$	694	$	—	$	—	$	—	$	—	$	—	$	694
Interest Income Recognized:
With No Related Allowance	$	6	$	—	$	64	$	—	$	12	$	9	$	91
With a Related Allowance	—		—		—		—		—		—		$	—
Cash Basis Income:
With No Related Allowance	$	—	$	—	$	64	$	—	$	—	$	—	$	64
With a Related Allowance	$	—	$	—	$	—	$	—	$	—	$	—	$	—

Troubled Debt Restructurings on Financing Receivables [Table Text Block]

Loans Modified in Trouble Debt Restructurings

The following table presents information on loans modified in trouble debt restructurings during the periods indicated:

Loans Modified in Trouble Debt Restructurings During the Period
			Commercial		Commercial		Other
	Commercial		Construction		Real Estate		Consumer		Automobile		Residential		Total
For the Year Ended:
December 31, 2014
Number of Loans	—		—		—		—		4		1		5
Pre-Modification Outstanding Recorded Investment	$	—	$	—	$	—	$	—	$	36	$	574	$	610
Post-Modification Outstanding Recorded Investment	$	—	$	—	$	—	$	—	$	36	$	574	$	610
Subsequent Default, Number of Contracts	—		—		—		—		—		—		—
Subsequent Default, Recorded Investment	—		—		—		—		—		—		—
Commitments to lend additional funds to modified loans	—		—		—		—		—		—		—
December 31, 2013
Number of Loans	1		—		—		—		9		—		10
Pre-Modification Outstanding Recorded Investment	$	169	$	—	$	—	$	—	$	88	$	—	$	257
Post-Modification Outstanding Recorded Investment	$	200	$	—	$	—	$	—	$	88	$	—	$	288
Subsequent Default, Number of Contracts	—		—		—		—		—		—		—
Subsequent Default, Recorded Investment	—		—		—		—		—		—		—
Commitments to lend additional funds to modified loans	—		—		—		—		—		—		—
December 31, 2012
Number of Loans	—		—		2		—		17		—		19
Pre-Modification Outstanding Recorded Investment	$	—	$	—	$	47	$	—	$	160	$	—	$	207
Post-Modification Outstanding Recorded Investment	$	—	$	—	$	47	$	—	$	160	$	—	$	207
Subsequent Default, Number of Contracts	—		—		—		—		—		—		—
Subsequent Default, Recorded Investment	—		—		—		—		—		—		—
Commitments to lend additional funds to modified loans	—		—		—		—		—		—		—

Financing Receivable Supplemental Information [Table Text Block]

Schedule of Supplemental Loan Information

	2014			2013
Supplemental Information:
Unamortized deferred loan origination costs, net of deferred loan   origination fees, included in the above balances	$	2,771		$	2,152
Overdrawn deposit accounts, included in the above balances	973			501
Pledged loans secured by one-to-four family residential mortgages   under a blanket collateral agreement to secure borrowings from   the Federal Home Loan Bank of New York	313,355			270,372
Residential real estate loans serviced for Freddie Mac, not included    in the balances above	158,598			156,593
Loans held for sale at period-end, included in the above balances	398			64
Loans to Related Parties:
Balance at beginning of year	$	7,769		$	17,447
Adjustment due to change in composition of related parties	—			(8,819		)
New loans and renewals, during the year	694			2,253
Repayments, during the year	(2,460		)	(3,112		)
Balance at end of year	$	6,003		$	7,769