Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2019

Banking and Thrift [Abstract]

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations

The actual capital amounts and ratios for Arrow and its subsidiary banks, Glens Falls National Bank and Trust Company (“Glens Falls National”) and Saratoga National Bank and Trust Company (“Saratoga National”), are presented in the table below as of December 31, 2019 and 2018:

	Actual				Minimum Amounts For Capital Adequacy Purposes (including "capital conservation buffer")				Minimum Amounts To Be Well-Capitalized
	Amount		Ratio		Amount		Ratio		Amount		Ratio
As of December 31, 2019
Total Capital  (to Risk Weighted Assets):
Arrow	$	330,657	14.8	%	$	234,588	10.5	%	$	223,417	10.0	%
Glens Falls National	254,438		14.5	%	184,248		10.5	%	175,474		10.0	%
Saratoga National	65,295		13.6	%	50,412		10.5	%	48,011		10.0	%
Tier I Capital  (to Risk Weighted Assets):
Arrow	309,469		13.8	%	190,615		8.5	%	179,402		8.0	%
Glens Falls National	237,546		13.5	%	149,566		8.5	%	140,768		8.0	%
Saratoga National	60,999		12.7	%	40,826		8.5	%	38,425		8.0	%
Tier I Capital  (to Average Assets):
Arrow	309,469		10.0	%	123,788		4.0	%	154,735		5.0	%
Glens Falls National	237,546		9.5	%	100,019		4.0	%	125,024		5.0	%
Saratoga National	60,999		9.6	%	25,416		4.0	%	31,770		5.0	%
Common Equity Tier 1 Capital  (to Risk Weighted Assets):
Arrow	289,409		12.9	%	157,044		7.0	%	145,826		6.5	%
Glens Falls National	237,486		13.5	%	123,141		7.0	%	114,345		6.5	%
Saratoga National	60,999		12.7	%	33,621		7.0	%	31,220		6.5	%
As of December 31, 2018
Total Capital  (to Risk Weighted Assets):
Arrow	304,109		14.9	%	202,059		9.9	%	204,100		10.0	%
Glens Falls National	237,238		14.4	%	163,101		9.9	%	164,749		10.0	%
Saratoga National	56,483		14.2	%	39,379		9.9	%	39,777		10.0	%

Tier I Capital  (to Risk Weighted Assets):
Arrow	283,913	13.9	%	161,361	7.9	%	163,403	8.0	%
Glens Falls National	220,844	13.4	%	130,199	7.9	%	131,847	8.0	%
Saratoga National	52,681	13.2	%	31,529	7.9	%	31,928	8.0	%
Tier I Capital  (to Average Assets):
Arrow	283,913	9.6	%	118,297	4.0	%	147,871	5.0	%
Glens Falls National	220,844	9.1	%	97,074	4.0	%	121,343	5.0	%
Saratoga National	52,681	9.6	%	21,950	4.0	%	27,438	5.0	%
Common Equity Tier 1 Capital  (to Risk Weighted Assets):
Arrow	263,863	12.9	%	130,909	6.4	%	132,954	6.5	%
Glens Falls National	220,794	13.4	%	105,454	6.4	%	107,102	6.5	%
Saratoga National	52,681	13.2	%	25,542	6.4	%	25,941	6.5	%