Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2014

Banking and Thrift [Abstract]

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]

Arrow’s and its subsidiary banks’, Glens Falls National Bank and Trust Company (“Glens Falls National”) and Saratoga National Bank and Trust Company (“Saratoga National”), actual capital amounts and ratios are presented in the table below as of December 31, 2014 and 2013:

	Actual				Minimum Amounts For Capital Adequacy Purposes				Minimum Amounts To Be Well-Capitalized
	Amount		Ratio		Amount		Ratio		Amount		Ratio
As of December 31, 2014:
Total Capital  (to Risk Weighted Assets):
Arrow	$	225,766	15.5	%	$	116,524	8.0	%	$	145,655	10.0	%
Glens Falls National	183,446		15.5	%	94,682		8.0	%	118,352		10.0	%
Saratoga National	35,217		13.3	%	21,183		8.0	%	26,479		10.0	%
Tier I Capital  (to Risk Weighted Assets):
Arrow	210,136		14.5	%	57,969		4.0	%	86,953		6.0	%
Glens Falls National	170,497		14.4	%	47,360		4.0	%	71,040		6.0	%
Saratoga National	32,596		12.3	%	10,600		4.0	%	15,900		6.0	%
Tier I Capital  (to Average Assets):
Arrow	210,136		9.4	%	89,420		4.0	%	89,420		4.0	%
Glens Falls National	170,497		9.1	%	74,944		4.0	%	93,680		5.0	%
Saratoga National	32,596		9.4	%	13,871		4.0	%	17,338		5.0	%

	Actual				Minimum Amounts For Capital Adequacy Purposes			Minimum Amounts To Be Well-Capitalized
	Amount		Ratio		Amount	Ratio		Amount	Ratio
As of December 31, 2013:
Total Capital  (to Risk Weighted Assets):
Arrow	$	212,360	15.8	%	107,524	8.0	%	134,405	10.0	%
Glens Falls National	172,720		15.4	%	89,725	8.0	%	112,156	10.0	%
Saratoga National	33,396		14.8	%	18,052	8.0	%	22,565	10.0	%
Tier I Capital  (to Risk Weighted Assets):
Arrow	197,906		14.7	%	53,852	4.0	%	80,778	6.0	%
Glens Falls National	160,849		14.4	%	44,680	4.0	%	67,020	6.0	%
Saratoga National	30,833		13.7	%	9,002	4.0	%	13,504	6.0	%
Tier I Capital  (to Average Assets):
Arrow	197,906		9.2	%	86,046	4.0	%	86,046	4.0	%
Glens Falls National	160,849		8.8	%	73,113	4.0	%	91,391	5.0	%
Saratoga National	30,833		9.7	%	12,715	4.0	%	15,893	5.0	%