Arrow Financial (AROW) 10-K 10 Mar 16 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information Document - USD ($)	12 Months Ended
	Dec. 31, 2015	Feb. 29, 2016	Jun. 30, 2015
Entity Information [Line Items]
Entity Registrant Name	Arrow Financial Corporation
Entity Central Index Key	717,538
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		12,952,227
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 348,534,481

Consolidated Balance Sheet

Consolidated Balance Sheet - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
ASSETS
Cash and Due from Banks	$ 34,816	$ 35,081
Interest-Bearing Deposits at Banks	16,252	11,214
Investment Securities:
Available-for-sale Securities	402,309	366,139
Held-to-Maturity Securities	320,611	302,024
Federal Home Loan Bank and Federal Reserve Bank Stock	8,839	4,851
Loans	1,573,952	1,413,268
Allowance for Loan Losses	(16,038)	(15,570)
Net Loans	1,557,914	1,397,698
Premises and Equipment, Net	27,440	28,488
Goodwill	21,873	22,003
Other Intangible Assets, Net	3,107	3,625
Other Assets	53,027	46,297
Total Assets	2,446,188	2,217,420
LIABILITIES
Noninterest-Bearing Deposits	358,751	300,786
NOW Accounts	887,317	871,671
Savings Deposits	594,538	524,648
Time Deposits of $100,000 or More	59,792	61,797
Other Time Deposits	130,025	144,046
Total Deposits	2,030,423	1,902,948
Short-term Borrowings	105,173	60,421
Federal Home Loan Bank Term Advances	55,000	10,000
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000
Other Liabilities	21,621	23,125
Total Liabilities	2,232,217	2,016,494
STOCKHOLDERS' EQUITY
Preferred Stock	0	0
Common Stock	17,421	17,079
Additional Paid-in Capital	250,680	239,721
Retained Earnings	32,139	29,458
Unallocated ESOP Shares	(1,100)	(1,450)
Accumulated Other Comprehensive Loss	(7,972)	(7,166)
Treasury Stock	(77,197)	(76,716)
Total Stockholders' Equity	213,971	200,926
Total Liabilities and Stockholders' Equity	$ 2,446,188	$ 2,217,420

Balance Sheet Parenthetical (Pa

Balance Sheet Parenthetical (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Held-to-maturity Securities, at Fair Value	$ 325,930	$ 308,566
Preferred Stock, Par Value	$ 5	$ 5
Preferred Stock, Shares Authorized	1,000,000	1,000,000
Common Stock, Par Value	$ 1	$ 1
Common Stock, Shares Authorized	20,000,000	20,000,000
Common Stock, Shares Issued	17,420,776	17,079,376
Unallocated ESOP Shares - Shares	55,275	71,748
Treasury Stock, Shares	4,423,072	4,386,001

Consolidated Income Statement

Consolidated Income Statement - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014		Dec. 31, 2013
INTEREST AND DIVIDEND INCOME
Interest and Fees on Loans	$ 56,856	$ 53,194		$ 51,319
Interest on Deposits at Banks	94	80		89
Interest and Dividends on Investment Securities:
Fully Taxable	8,043	7,954		6,903
Exempt from Federal Taxes	5,745	5,633		5,827
Total Interest and Dividend Income	70,738	66,861		64,138
INTEREST EXPENSE
NOW Accounts	1,276	1,722		2,461
Savings Deposits	741	839		1,024
Time Deposits of $100,000 or More	356	770		1,198
Other Time Deposits	742	1,354		1,962
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	20	22		18
Federal Home Loan Bank Advances	1,097	490		680
Junior Subordinated Obligations Issued to Unconsolidated Subsidary Trusts	581	570		579
Total Interest Expense	4,813	5,767		7,922
NET INTEREST INCOME	65,925	61,094		56,216
Provision for Loan Losses	1,347	1,848		200
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	64,578	59,246		56,016
NONINTEREST INCOME
Income from Fiduciary Activities	7,762	7,468		6,735
Fees for Other Services to Customers	9,220	9,261		9,407
Insurance Commissions	8,967	9,455		8,895
Net Gains on Securities Transactions	129	110		540
Net Gains on Sale of Loans	692	784		1,460
Other Operating Income	1,354	1,238		1,024
Total Noninterest Income	28,124	28,316		28,061
NONINTEREST EXPENSE
Salaries and Employee Benefits	33,064	30,941		31,182
Occupancy Expense, Net	9,267	8,990		8,285
FDIC Assessments	1,186	1,117		1,080
Other Operating Expense	13,913	12,980		12,656
Total Noninterest Expense	57,430	54,028		53,203
INCOME BEFORE PROVISION FOR INCOME TAXES	35,272	33,534		30,874
Provision for Income Taxes	10,610	10,174		9,079
Net Income	$ 24,662	$ 23,360		$ 21,795
Average Shares Outstanding:
Basic Shares, in Shares	12,894	12,856	[1]	12,793	[1]
Diluted Shares, in Shares	12,942	12,886	[1]	12,825	[1]
Per Common Share
Basic Earnings, in Earnings Per Share	$ 1.91	$ 1.82	[1]	$ 1.70	[1]
Diluted Earnings, In Earnings Per Share	$ 1.91	$ 1.81	[1]	$ 1.70	[1]
[1]	Share and Per Share Amounts have been restated for the September 2015 2% stock dividend.

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net Income	$ 24,662	$ 23,360	$ 21,795
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(1,208)	(2,961)	3,500
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	402	168	589
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(806)	(2,793)	4,089
Comprehensive Income (Loss), Net of Tax	23,856	20,567	25,884
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(1,832)	232	(2,925)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(78)	(67)	(326)
Accumulated Defined Benefit Plans Adjustment, Net Unamortized Gain (Loss) [Member]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	848	(2,846)	6,425
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	514	288	914
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Cost (Credit) [Member]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(224)	(347)	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$ (34)	$ (53)	$ 1

Statement of Stockholders' Equi

Statement of Stockholders' Equity - USD ($)		Total	Common Stock		Additional Paid in Capital	Retained Earnings	Unallocated ESOP Shares	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Stockholder's Equity Beginning Balance at Dec. 31, 2012		$ 175,825,000	$ 16,416,000		$ 218,650,000	$ 26,251,000	$ (2,150,000)	$ (8,462,000)	$ (74,880,000)
Net Income		21,795,000	0		0		0	0	0
Other Comprehensive (Loss) Income		4,089,000	0		0	0	0	4,089,000	0
Stock Dividend		0	328,000		8,152,000	(8,480,000)	0	0	0
Cash Dividends Paid	[1]	(12,109,000)	0		0	(12,109,000)	0	0	0
Stock Options Exercised		1,254,000	0		676,000	0	0	0	578,000
Shares Issued Under the Directors' Stock Plan		198,000	0		123,000	0	0	0	75,000
Shares Issued Under the Employee Stock Purchase Plan		477,000	0		283,000	0	0	0	194,000
Shares Issued for Dividend Reinvestment Plans		1,280,000	0		796,000	0	0	0	484,000
Stock-Based Compensation Expense		372,000	0		372,000	0	0	0	0
Tax Benefit for Disposition of Stock Options		23,000	0		23,000	0	0	0	0
Purchases of Treasury Stock		(1,709,000)	0		0	0	0	0	(1,709,000)
Shares Issued for Acquisition of Subsidiary		233,000	0		139,000	0	0	0	94,000
Allocation of ESOP Stock		426,000	0		(76,000)	0	(350,000)	0	0
Stockholder's Equity Ending Balance at Dec. 31, 2013		192,154,000	16,744,000		229,290,000	27,457,000	(1,800,000)	(4,373,000)	(75,164,000)
Net Income		23,360,000	0		0	23,360,000	0	0	0
Other Comprehensive (Loss) Income		(2,793,000)	0		0	0	0	(2,793,000)	0
Stock Dividend		0	335,000		8,617,000	(8,952,000)	0	0	0
Cash Dividends Paid	[1]	(12,407,000)	0		0	(12,407,000)	0	0	0
Stock Options Exercised		1,454,000	0		852,000	0	0	0	602,000
Shares Issued Under the Directors' Stock Plan		197,000	0		123,000	0	0	0	74,000
Shares Issued Under the Employee Stock Purchase Plan		488,000	0		296,000	0	0	0	192,000
Stock-Based Compensation Expense		360,000	0		360,000	0	0	0	0
Tax Benefit for Disposition of Stock Options		25,000	0		25,000	0	0	0	0
Purchases of Treasury Stock		(2,455,000)	0		0	0	0	0	(2,455,000)
Shares Issued for Acquisition of Subsidiary		91,000	0		56,000	0	0	0	35,000
Allocation of ESOP Stock		452,000	0		(102,000)	0	(350,000)	0	0
Stockholder's Equity Ending Balance at Dec. 31, 2014		200,926,000	17,079,000		239,721,000	29,458,000	(1,450,000)	(7,166,000)	(76,716,000)
Net Income		24,662,000	0		0	24,662,000	0	0	0
Other Comprehensive (Loss) Income		(806,000)	0		0	0	0	(806,000)	0
Stock Dividend		0	342,000	[2]	8,939,000	(9,281,000)	0	0	0
Cash Dividends Paid	[1]	(12,700,000)	0		0	(12,700,000)	0	0	0
Stock Options Exercised		918,000	0		489,000	0	0	0	429,000
Shares Issued Under the Directors' Stock Plan		227,000	0		143,000	0	0	0	84,000
Shares Issued Under the Employee Stock Purchase Plan		494,000	0		306,000	0	0	0	188,000
Shares Issued for Dividend Reinvestment Plans		886,000	0		570,000	0	0	0	316,000
Stock-Based Compensation Expense		308,000	0		308,000	0	0	0	0
Tax Benefit for Disposition of Stock Options		59,000	0		59,000	0	0	0	0
Purchases of Treasury Stock		(1,498,000)	0		0	0	0	0	(1,498,000)
Shares Issued for Acquisition of Subsidiary		0
Allocation of ESOP Stock		495,000	0		(145,000)	0	(350,000)	0	0
Stockholder's Equity Ending Balance at Dec. 31, 2015		$ 213,971,000	$ 17,421,000		$ 250,680,000	$ 32,139,000	$ (1,100,000)	$ (7,972,000)	$ (77,197,000)
[1]	Cash dividends paid per share have been adjusted for the September 2015 2% stock dividend.
[2]	Included in the shares issued for the 2% stock dividend in 2015 were treasury shares of 87,465 and unallocated ESOP shares of 1,172.

Stockholder's Equity Parentheti

Stockholder's Equity Parenthetical (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash Dividends Paid, per Share	$ 0.99	$ 0.97	$ 0.95
Stock Dividends - Shares	341,400	334,890	328,323
Stock Options Exercised - Shares	43,096	61,364	58,719
Shares Issued Under Directors Stock Plan - Shares	8,480	7,584	7,643
Shares Issued Under the Employee Stock Purchase Plan - Shares	19,036	19,575	19,679
Shares Issued for Dividend Reinvestment Plans - Shares	32,171	0	49,574
Purchase of Treasury Stock - Shares	55,368	95,064	68,361
Acquisition of Subsidiary - Shares	0	3,595	9,503
Allocation of ESOP Stock - Shares	17,645	17,300	16,969

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash Flows from Operating Activities:
Net Income	$ 24,662	$ 23,360	$ 21,795
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Provision for Loan Losses	1,347	1,848	200
Depreciation and Amortization	6,293	7,042	8,870
Allocation of ESOP Stock	495	452	426
Gains on the Sale of Securities Available-for-Sale	(172)	(137)	(527)
Held-to-maturity Securities, Sold Security, Realized Gain (Loss)	0	0	(18)
Losses on the Sale of Securities Available-for-Sale	43	27	0
Held-to-Maturity Securities, Sold, Realized Loss	0	0	5
Loans Originated and Held-for-Sale	(20,731)	(23,156)	(46,101)
Proceeds from the Sale of Loans Held-for-Sale	21,524	23,606	50,298
Net Gains on the Sale of Loans	(692)	(784)	(1,460)
Net Loss (Gains) on the Sale of Premises and Equipment, Other Real Estate Owned and Repossessed Assets	297	77	120
Gain (Loss) on Disposition of Business	(204)	0	0
Contributions to Pension Plans	(3,858)	(921)	(473)
Deferred Income Tax Expense (Benefit) Expense	1,180	(299)	294
Stock-Based Compensation Expense	227	197	198
Stock-Based Compensation Expense	308	360	372
Net Decrease in Other Assets	(1,147)	(806)	1,888
Net Increase (Decrease) in Other Liabilities	(646)	(225)	786
Net Cash Provided By Operating Activities	28,926	30,641	36,673
Cash Flows from Investing Activities:
Proceeds from the Sale of Securities Available-for-Sale	66,551	49,928	16,295
Proceeds from the Maturities and Calls of Securities Available-for-Sale	93,817	153,127	132,228
Purchases of Securities Available-for-Sale	(201,820)	(113,953)	(136,416)
Proceeds from Sale and Maturity of Held-to-maturity Securities	0	0	1,181
Proceeds from the Maturities and Calls of Securities Held-to-Maturity	48,409	56,714	47,228
Purchases of Securities Held-to-Maturity	(68,210)	(60,906)	(109,620)
Net (Increase) Decrease in Loans	(164,710)	(148,482)	(98,903)
Proceeds from the Sales of Premises and Equipment, Other Real Estate Owned and Repossessed Assets	1,901	1,237	1,789
Purchases of Premises and Equipment	(1,621)	(1,468)	(2,233)
Cash Paid for Subsidiaries	0	(75)	(75)
Proceeds from Divestiture of Businesses	132	0	0
Net Decrease (Increase) in Other Investments	(3,988)	1,430	(489)
Purchase of Bank Owned Life Insurance	0	(5,245)	0
Net Cash Used In Investing Activities	(229,539)	(67,693)	(149,015)
Cash Flows from Financing Activities:
Net Increase in Deposits	127,475	60,618	111,175
Net (Decrease) Increase in Short-Term Borrowings	44,752	(4,356)	23,099
Proceeds from Federal Home Loan Bank Advances	55,000	0	0
Federal Home Loan Bank Repayments	(10,000)	(10,000)	(10,000)
Purchases of Treasury Stock	(1,498)	(2,455)	(1,709)
Stock Options Exercised	918	1,454	1,254
Shares Issued Under the Employee Stock Purchase Plan	494	488	477
Tax Benefit from Exercise of Stock Options	59	25	23
Shares Issued for Dividend Reinvestment Plans	886	0	1,280
Cash Dividends Paid	(12,700)	(12,407)	(12,109)
Net Cash Provided By Financing Activities	205,386	33,367	113,490
Net Increase (Decrease) in Cash and Cash Equivalents	4,773	(3,685)	1,148
Cash and Cash Equivalents at Beginning of Year	46,295	49,980	48,832
Cash and Cash Equivalents at End of Year	51,068	46,295	49,980
Supplemental Disclosures to Statements of Cash Flow Information:
Interest on Deposits and Borrowings	4,856	5,932	8,067
Income Taxes	9,357	10,060	8,336
Non-cash Investing and Financing Activities:
Transfer of Loans to Other Real Estate Owned and Repossessed Assets	3,046	1,308	971
Shares Issued for Acquisition of Subsidiary	$ 0	$ 91	$ 233

Risks and Uncertainties

Risks and Uncertainties	12 Months Ended
	Dec. 31, 2015
Risks and Uncertainties [Abstract]
Concentration Risk Disclosure [Text Block]	RISKS AND UNCERTAINTIES Nature of Operations - Arrow Financial Corporation, a New York corporation, was incorporated on March 21, 1983 and is registered as a bank holding company within the meaning of the Bank Holding Company Act of 1956. Arrow derives most of its earnings from the ownership of two nationally chartered commercial banks and through the ownership of four insurance agencies. The two banks provide a full range of services to individuals and small to mid-size businesses in northeastern New York State from just north of Albany, the State's capitol, to the Canadian border. Both banks have trust departments which provide investment management and administrative services. The insurance agencies specialize in property and casualty insurance, group health insurance, sports accident and health insurance, and individual life insurance. Management ’ s Use of Estimates - The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of income and expenses during the reporting period. Our most significant estimates are the allowance for loan losses, the evaluation of other-than-temporary impairment of investment securities, goodwill impairment, pension and other postretirement liabilities, analysis of a need for a valuation allowance for deferred tax assets and other fair value calculations. Actual results could differ from those estimates. A material estimate that is particularly susceptible to significant change in the near term is the allowance for loan losses. The allowance for loan losses is management ’ s best estimate of probable loan losses incurred as of the balance sheet date. While management uses available information to recognize losses on loans, future adjustments to the allowance for loan losses may be necessary based on changes in economic conditions. Concentrations of Credit - Virtually all of Arrow's loans are with customers in upstate New York. Although the loan portfolios of the subsidiary banks are well diversified, tourism has a substantial impact on the northeastern New York economy. The commitments to extend credit are fairly consistent with the distribution of loans presented in Note 5, generally have the same credit risk and are subject to normal credit policies. Generally, the loans are secured by assets and are expected to be repaid from cash flow or the sale of selected assets of the borrowers. Arrow evaluates each customer's creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by Arrow upon extension of credit, is based upon management's credit evaluation of the counterparty. The nature of the collateral varies with the type of loan and may include: residential real estate, cash and securities, inventory, accounts receivable, property, plant and equipment, income producing commercial properties and automobiles.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Principles of Consolidation - The financial statements of Arrow and its wholly owned subsidiaries are consolidated and all material inter-company transactions have been eliminated. In the “ Parent Company Only ” financial statements in Note 20, the investment in wholly owned subsidiaries is carried under the equity method of accounting. When necessary, prior years ’ consolidated financial statements have been reclassified to conform to the current-year financial statement presentation. The Company determines whether it has a controlling financial interest in an entity by first evaluating whether the entity is a voting interest entity or a variable interest entity under GAAP. Voting interest entities are entities in which the total equity investment at risk is sufficient to enable the entity to finance itself independently and provides the equity holders with the obligation to absorb losses, the right to receive residual returns and the right to make decisions about the entity’s activities. The Company consolidates voting interest entities in which it has all, or at least a majority of, the voting interest. As defined in applicable accounting standards, variable interest entities (VIE) are entities that lack one or more of the characteristics of a voting interest entity. A controlling financial interest in a VIE is present when the Company has both the power and ability to direct the activities of the VIE that most significantly impact the VIE's economic performance and an obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. The Company’s wholly owned subsidiaries Arrow Capital Statutory Trust II and Arrow Capital Statutory Trust III are VIEs for which the Company is not the primary beneficiary. Accordingly, the accounts of these entities are not included in the Company’s consolidated financial statements. Segment Reporting - Arrow operations are primarily in the community banking industry, which constitutes Arrow ’ s only segment for financial reporting purposes. Arrow provides other services, such as trust administration, retirement plan administration, advice to our proprietary mutual funds and insurance products, but these services do not rise to the quantitative thresholds for separate disclosure. Arrow operates primarily in the northeastern region of New York State in Warren, Washington, Saratoga, Essex, Clinton and Albany counties and surrounding areas. Cash and Cash Equivalents - Cash and cash equivalents include the following items: cash at branches, due from bank balances, cash items in the process of collection, interest-bearing bank balances and federal funds sold. Securities - Management determines the appropriate classification of securities at the time of purchase. Securities reported as held-to-maturity are those debt securities which Arrow has both the positive intent and ability to hold to maturity and are stated at amortized cost. Securities available-for-sale are reported at fair value, with unrealized gains and losses reported in accumulated other comprehensive income or loss, net of taxes. Realized gains and losses are based upon the amortized cost of the specific security sold. A decline in the fair value of any available-for-sale or held-to-maturity security below cost that is deemed to be other-than-temporary results in an impairment to reduce the carrying amount to fair value. To determine whether an impairment is other-than-temporary, we consider all available information relevant to the collectibility of the security, including past events, current conditions, and reasonable and supportable forecasts when developing an estimate of cash flows expected to be collected. Evidence considered in this assessment includes the reasons for impairment, the severity and duration of the impairment, changes in value subsequent to year-end, forecasted performance of the investee, and the general market condition in the geographic area or industry the investee operates in. When an other-than-temporary impairment has occurred on a debt security, the amount of the other-than-temporary impairment recognized in earnings depends on whether we intend to sell the debt security or more likely than not will be required to sell the debt security before recovery of its amortized cost basis less any current-period credit loss. If we intend to sell the debt security or it is more likely than not that we will be required to sell the debt security before recovery of its amortized cost basis less any current-period credit loss, the other-than-temporary impairment is recognized in earnings equal to the entire difference between the investment ’ s amortized cost basis and its fair value at the balance sheet date. If we do not intend to sell the debt security and it is not more likely than not that we will be required to sell the debt security before recovery of its amortized cost basis, the other-than-temporary impairment is separated into the amount representing the credit loss and the amount related to all other factors. The amount of the total other-than-temporary impairment related to the credit loss is recognized in earnings. The amount of the total other-than-temporary impairment related to other factors is recognized in other comprehensive income, net of applicable income taxes. Loans and Allowance for Loan Losses - Interest income on loans is accrued and credited to income based upon the principal amount outstanding. Loan fees and costs directly associated with loan originations are deferred and amortized/accreted as an adjustment to yield over the lives of the loans originated. From time-to-time, Arrow has sold (most with servicing retained) residential real estate loans at or shortly after origination. Any gain or loss on the sale of loans, along with the value of the servicing right, is recognized at the time of sale as the difference between the recorded basis in the loan and net proceeds from the sale. Loans held for sale are recorded at the lower of cost or fair value on an aggregate basis. Loans are placed on nonaccrual status either due to the delinquency status of principal and/or interest or a judgment by management that the full repayment of principal and interest is unlikely. Unless already placed on nonaccrual status, loans secured by home equity lines of credit are put on nonaccrual status when 120 days past due; residential real estate loans when 150 days past due; commercial and commercial real estate loans are evaluated on a loan-by-loan basis and are placed on nonaccrual status when 90 days past due if the full collection of principal and interest is uncertain. The balance of any accrued interest deemed uncollectible at the date the loan is placed on nonaccrual status is reversed, generally against interest income. A loan is returned to accrual status at the later of the date when the past due status of the loan falls below the threshold for nonaccrual status or management deems that it is likely that the borrower will repay all interest and principal. For payments received while the loan is on nonaccrual status, we may recognize interest income on a cash basis if the repayment of the remaining principal and accrued interest is deemed likely. The allowance for loan losses is maintained by charges to operations based upon our best estimate of the probable amount of loans that we will be unable to collect based on current information and events. Provisions to the allowance for loan losses are offset by actual loan charge-offs (net of any recoveries). We evaluate the loan portfolio for potential charge-offs on a monthly basis. In general, automobile and other consumer loans are charged-off when 120 days delinquent. Residential real estate loans are charged-off when a loss becomes known or based on a new appraisal at the earlier of 180 days past due or repossession. Commercial and commercial real estate loans loans are evaluated early in their delinquency status and are charged-off when management concludes that not all principal will be repaid from on-going cash flows or liquidation of collateral. An evaluation of estimated proceeds from the liquidation of the loan ’ s collateral is compared to the loan carrying amount and a charge to the allowance for loan losses is taken for any deficiency. While management uses available information to recognize losses on loans, future additions to the allowance may be necessary based on changes in economic conditions in Arrow's market area. In addition, various Federal regulatory agencies, as an integral part of their examination process, review Arrow's allowance for loan losses. Such agencies may require Arrow to recognize additions to the allowance in future periods, based on their judgments about information available to them at the time of their examination, which may not be currently available to management. We consider nonaccrual loans over $250 thousand and all troubled debt restructured loans to be impaired loans and we evaluate these loans individually to determine the amount of impairment, if any. The amount of impairment, if any, related to individual impaired loans is measured based on either the present value of expected future cash flows discounted at the loan's effective interest rate, the loan's observable market price or the fair value of the collateral if the loan is collateral dependent. Arrow determines impairment for collateral dependent loans based on the fair value of the collateral less estimated costs to sell. Any excess of the recorded investment in the collateral dependent impaired loan over the estimated collateral value, less costs to sell, is typically charged off. For impaired loans which are not collateral dependent, impairment is measured by comparing the recorded investment in the loan to the present value of the expected cash flows, discounted at the loan ’ s effective interest rate. If this amount is less than the recorded investment in the loan, an impairment reserve is recognized as part of the allowance for loan losses, or based upon the judgment of management all or a portion of the excess of the recorded investment in the loan over the present value of the estimated future cash flow may be charged off. The allowance for loan losses on the remaining loans is primarily determined based upon consideration of the historical loss factor incorporating a rolling twelve quarter look-back period of the respective segment that have occurred within each pool of loans over the loss emergence period (LEP), adjusted as necessary based upon consideration of qualitative considerations impacting the inherent risk of loss in the respective loan portfolios. The LEP is an estimate of the average amount of time from the point at which a loss is incurred on a loan to the point at which the loss is recognized in the financial statements. Since the LEP may change under various economic environments, we update the LEP calculation on an annual basis. We also consider and adjust historical net loss factors for qualitative factors that impact the inherent risk of loss associated with our loan categories within our total loan portfolio. These include: • Changes in the volume and severity of past due, nonaccrual and adversely classified loans • Changes in the nature and volume of the portfolio and in the terms of loans • Changes in the value of the underlying collateral for collateral dependent loans • Changes in lending policies and procedures, including changes in underwriting standards and collection, charge-off, and recovery practices not considered elsewhere in estimating credit losses • Changes in the quality of the loan review system • Changes in the experience, ability, and depth of lending management and other relevant staff • Changes in international, national, regional, and local economic and business conditions and developments that affect the collectability of the portfolio • The existence and effect of any concentrations of credit, and changes in the level of such concentrations • The effect of other external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in the existing portfolio or pool In management ’ s opinion, the balance of the allowance for loan losses, at each balance sheet date, is sufficient to provide for probable loan losses inherent in the corresponding loan portfolio. Other Real Estate Owned and Repossessed Assets - Real estate acquired by foreclosure and assets acquired by repossession are recorded at the fair value of the property less estimated costs to sell at the time of repossession. Subsequent declines in fair value, after transfer to other real estate owned and repossessed assets are recognized through a valuation allowance. Such declines in fair value along with related operating expenses to administer such properties or assets are charged directly to operating expense. Premises and Equipment - Premises and equipment are stated at cost, less accumulated depreciation and amortization. Depreciation and amortization included in operating expenses are computed largely on the straight-line method. Depreciation is based on the estimated useful lives of the assets (buildings and improvements 20-40 years; furniture and equipment 7-10 years; data processing equipment 5-7 years) and, in the case of leasehold improvements, amortization is computed over the terms of the respective leases or their estimated useful lives, whichever is shorter. Gains or losses on disposition are reflected in earnings. Investments in Real Estate Limited Partnerships - These limited partnerships acquire, develop and operate low and moderate-income housing. As a limited partner in these projects, we receive low income housing tax credits and tax deductions for losses incurred by the underlying properties. We apply the proportional amortization method allowed in Accounting Standards Update 2014-01 "Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects." The proportional amortization method permits an entity to amortize the initial cost of the investment in proportion to the amount of the tax credits and other tax benefits received and to recognize the net investment performance in the income statement as a component of income tax expense. Income Taxes - Arrow accounts for income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income tax expense in the period that includes the enactment date. Arrow ’ s policy is that deferred tax assets are reduced by a valuation allowance if, based on the weight of available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. Goodwill and Other Intangible Assets - Identifiable intangible assets acquired in a business combination are capitalized and amortized. Any remaining unidentifiable intangible asset is classified as goodwill, for which amortization is not required but which must be evaluated for impairment. Arrow tests for impairment of goodwill on an annual basis, or when events and circumstances indicate potential impairment. In evaluating goodwill for impairment, Arrow first assesses certain qualitative factors to determine if it is more likely than not that the fair value of the reporting unit is less than its carrying value. If it is more likely than not that the fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is considered not impaired. If the carrying amount of a reporting unit exceeds its fair value, the second step of the goodwill impairment test is performed to measure the amount of impairment loss, if any. The carrying amounts of other recognized intangible assets that meet recognition criteria and for which separate accounting records have been maintained (core deposit intangibles and mortgage servicing rights), have been included in the consolidated balance sheet as “ Other Intangible Assets, Net. ” Core deposit intangibles are being amortized on a straight-line basis over a period of ten to fifteen years. Arrow has sold residential real estate loans, primarily to Freddie Mac, with servicing retained. Mortgage servicing rights are recognized as an asset when loans are sold with servicing retained, by allocating the cost of an originated mortgage loan between the loan and servicing right based on estimated relative fair values. The cost allocated to the servicing right is capitalized as a separate asset and amortized in proportion to, and over the period of, estimated net servicing income. Capitalized mortgage servicing rights are evaluated for impairment by comparing the asset ’ s carrying value to its current estimated fair value. Fair values are estimated using a discounted cash flow approach, which considers future servicing income and costs, current market interest rates, and anticipated prepayment, and default rates. Impairment losses are recognized through a valuation allowance for servicing rights having a current fair value that is less than amortized cost on an aggregate basis. Adjustments to increase or decrease the valuation allowance are charged or credited to income as a component of other operating income. Pension and Postretirement Benefits - Arrow maintains a non-contributory, defined benefit pension plan covering substantially all employees, a supplemental pension plan covering certain executive officers selected by the Board of Directors, and certain post-retirement medical, dental and life insurance benefits for employees and retirees. The costs of these plans, based on actuarial computations of current and future benefits for employees, are charged to current operating expenses. The cost of post-retirement benefits other than pensions is recognized on an accrual basis as employees perform services to earn the benefits. Arrow recognizes the overfunded or underfunded status of our single employer defined benefit pension plan as an asset or liability on its consolidated balance sheet and recognizes changes in the funded status in comprehensive income in the year in which the change occurred. Prior service costs or credits are amortized on a straight-line basis over the average remaining service period of active participants. Gains and losses in excess of 10% of the greater of the benefit obligation or the fair value of assets are amortized over the average remaining service period of active participants. The discount rate assumption is determined by preparing an analysis of the respective plan’s expected future cash flows and high-quality fixed-income investments currently available and expected to be available during the period to maturity of the pension benefits. Stock-Based Compensation Plans - Arrow has two stock option plans, which are described more fully in Note 12. The Company expenses the grant date fair value of options granted. The expense is recognized over the vesting period of the grant, typically four years, on a straight-line basis. Shares are generally issued from treasury for the exercise of stock options. Arrow sponsors an Employee Stock Purchase Plan ("ESPP") under which employees may purchase Arrow ’ s common stock at a 5% discount below market price at the time of purchase. This stock purchase plan is not considered a compensatory plan. Arrow sponsors an Employee Stock Ownership Plan ("ESOP"), a qualified defined contribution plan. The ESOP has borrowed funds from one of Arrow ’ s subsidiary banks to purchase Arrow common stock. The shares pledged as collateral are reported as a reduction of Arrow ’ s stockholders ’ equity. Compensation expense is recognized as shares are released for allocation to individual employee accounts equal to the current average market price. Securities Sold Under Agreements to Repurchase - In securities repurchase agreements, Arrow receives cash from a counterparty in exchange for the transfer of securities to a third party custodian ’ s account that explicitly recognizes Arrow ’ s interest in the securities. These agreements are accounted for by Arrow as secured financing transactions, since it maintains effective control over the transferred securities, and meets other criteria for such accounting. Accordingly, the cash proceeds are recorded as borrowed funds, and the underlying securities continue to be carried in Arrow ’ s securities available-for-sale portfolio. Earnings Per Share ( “ EPS ” ) - Basic EPS excludes dilution and is computed by dividing income available to common stockholders by the weighted average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the entity (such as Arrow ’ s stock options), computed using the treasury stock method. Unallocated common shares held by Arrow ’ s Employee Stock Ownership Plan are not included in the weighted average number of common shares outstanding for either the basic or diluted EPS calculation. Financial Instruments - Arrow is a party to certain financial instruments with off-balance sheet risk, such as: commercial lines of credit, construction lines of credit, overdraft protection, home equity lines of credit and standby letters of credit. Arrow's policy is to record such instruments when funded. Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. These estimates do not reflect any premium or discount that could result from offering for sale at one time Arrow's entire holdings of a particular financial instrument. Because no market exists for a significant portion of Arrow's financial instruments, fair value estimates are based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and therefore cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Fair value estimates are based on existing on- and off-balance sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. For example, Arrow has a trust department that contributes net fee income annually. The value of trust department customer relationships is not considered a financial instrument of the Company, and therefore this value has not been incorporated into the fair value estimates. Other significant assets and liabilities that are not considered financial assets or liabilities include deferred taxes, premises and equipment, the value of low-cost, long-term core deposits and goodwill. In addition, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on fair value estimates and have not been considered in any of the estimates. The carrying amount of the following short-term assets and liabilities is a reasonable estimate of fair value: cash and due from banks, federal funds sold and purchased, securities sold under agreements to repurchase, demand deposits, savings, N.O.W. and money market deposits, other short-term borrowings, accrued interest receivable and accrued interest payable. The fair value estimates of other on- and off-balance sheet financial instruments, as well as the method of arriving at fair value estimates, are included in the related footnotes and summarized in Note 17. Fair Value Measures - We determine the fair value of financial instruments under the following hierarchy: • Level 1 – Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; • Level 2 – Quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs that are observable, either directly or indirectly, for substantially the full term of the asset or liability; • Level 3 – Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity). A financial instrument ’ s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. Management ’ s Use of Estimates -The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of income and expenses during the reporting period. Our most significant estimates are the allowance for loan losses, the evaluation of other-than-temporary impairment of investment securities, goodwill impairment, pension and other postretirement liabilities and an analysis of a need for a valuation allowance for deferred tax assets. Actual results could differ from those estimates. A material estimate that is particularly susceptible to significant change in the near term is the allowance for loan losses. In connection with the determination of the allowance for loan losses, management obtains appraisals for properties. The allowance for loan losses is management ’ s best estimate of probable loan losses incurred as of the balance sheet date. While management uses available information to recognize losses on loans, future adjustments to the allowance for loan losses may be necessary based on changes in economic conditions. Recent Accounting Pronouncements During 2015, the FASB issued 17 accounting standards updates and, through the date of this report, four additional standard in 2016. The standards listed below did not have had an immediate impact on Arrow, but could in the future. ASU 2015-01 "Income Statement - Extraordinary and Unusual Items" eliminated the concept of extraordinary items. For Arrow, the standard is effective for the first quarter of 2016. ASU 2015-02 "Consolidation" changed the analysis that a reporting entity must perform to determine whether it should consolidate certain types of legal entities. For Arrow, the standard is effective for the first quarter of 2016. ASU 2015-03 and ASU 2015-15 "Interest - Imputation of Interest" required debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability. There were no changes to the recognition and measurement of debt issuance costs. For Arrow, the standard is effective for the first quarter of 2016. ASU 2015-04 "Compensation-Retirement Benefits" provides several practical expedients for the measurement or, in certain circumstances, the remeasurement of defined benefit plan assets and obligations. Most of the practical expedients will not apply to Arrow, however, if used, an entity must disclose the accounting policy election and the date used to measure defined benefit plan assets and obligations. For Arrow, the standard is effective for the first quarter of 2016. ASU 2015-05 "Intangibles - Goodwill and Other - Internal use Software" provides guidance to customers about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, then the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. For Arrow, the standard is effective for the first quarter of 2016. ASU 2015-06 "Earnings Per Share" contains guidance that addresses master limited partnerships. For Arrow, the standard is effective for the first quarter of 2016. ASU 2015-07 "Fair Value Measurement" permits a reporting entity to measure the fair value of certain investments using the net asset value per share of the investment. For Arrow, the standard is effective for the first quarter of 2016. ASU 2015-08 "Business Combinations" amended various SEC paragraphs pursuant to SEC Staff Accounting Bulletin No. 115. ASU 2016-01 "Recognition and Measurement of Financial Assets and Financial Liabilities" will significantly change the income statement impact of equity investments. For Arrow, the standard is effective for the first quarter of 2018, and will require that equity investments be measured at fair value, with changes in fair value measured in net income. Currently, we hold a small portfolio of equity investments and we do not expect that the adoption of this change in accounting for equity investments will have a material impact on our financial position or the results of operations in periods subsequent to its adoption. ASU 2016-2 "Leases" will require the recognition of operating leases. For Arrow, the standard becomes effective in the first quarter of 2019. We do not expect that the adoption of this change in accounting for operating leases will have a material impact on our financial position or the results of operations in periods subsequent to its adoption.

Cash and Cash Equivalents

Cash and Cash Equivalents	12 Months Ended
	Dec. 31, 2015
Cash and Cash Equivalents [Abstract]
Cash and Cash Equivalents Disclosure [Text Block]	CASH AND CASH EQUIVALENTS (Dollars In Thousands) The following table is the schedule of cash and cash equivalents at December 31, 2015 and 2014 : 2015 2014 Cash and Due From Banks $ 34,816 $ 35,081 Interest-Bearing Deposits at Banks 16,252 11,214 Total Cash and Cash Equivalents $ 51,068 $ 46,295 Supplemental Information: Total required reserves, including vault cash and Federal Reserve Bank deposits $ 23,446 $ 19,989 The Company is required to maintain reserve balances with the Federal Reserve Bank of New York. The required reserve is calculated on a fourteen day average and the amounts presented in the table above represent the average for the period that includes December 31.

Investment Securities

Investment Securities	12 Months Ended
	Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	INVESTMENT SECURITIES (Dollars In Thousands) The following table is the schedule of Available-For-Sale Securities at December 31, 2015 and 2014 : Available-For-Sale Securities U.S. Agency Obligations State and Municipal Obligations Mortgage- Backed Securities - Residential Corporate and Other Debt Securities Mutual Funds and Equity Securities Total Available- For-Sale Securities December 31, 2015 Available-For-Sale Securities, at Amortized Cost $ 155,932 $ 52,306 $ 177,376 $ 14,544 $ 1,120 $ 401,278 Available-For-Sale Securities, at Fair Value 155,782 52,408 178,588 14,299 1,232 402,309 Gross Unrealized Gains 264 105 2,236 — 112 2,717 Gross Unrealized Losses 414 3 1,024 245 — 1,686 Available-For-Sale Securities, Pledged as Collateral, at Fair Value 310,857 Maturities of Debt Securities, at Amortized Cost: Within One Year — 23,954 13,460 5,613 — 43,027 From 1 - 5 Years 155,932 26,753 153,333 7,931 — 343,949 From 5 - 10 Years — 999 10,583 — — 11,582 Over 10 Years — 600 — 1,000 — 1,600 Maturities of Debt Securities, at Fair Value: Within One Year — 23,972 13,658 5,609 — 43,239 From 1 - 5 Years 155,782 26,837 153,920 7,890 — 344,429 From 5 - 10 Years — 999 11,010 — — 12,009 Over 10 Years — 600 — 800 — 1,400 Securities in a Continuous Loss Position, at Fair Value: Less than 12 Months $ 76,802 $ 4,289 $ 99,569 $ 3,616 $ — $ 184,276 12 Months or Longer — 1,443 903 10,671 — 13,017 Total $ 76,802 $ 5,732 $ 100,472 $ 14,287 $ — $ 197,293 Number of Securities in a Continuous Loss Position 21 19 30 19 — 89 Unrealized Losses on Securities in a Continuous Loss Position: Less than 12 Months $ 413 $ 2 $ 1,023 $ 2 $ — $ 1,440 12 Months or Longer 1 1 1 243 — 246 Total $ 414 $ 3 $ 1,024 $ 245 $ — $ 1,686 Available-For-Sale Securities U.S. Agency Obligations State and Municipal Obligations Mortgage- Backed Securities - Residential Corporate and Other Debt Securities Mutual Funds and Equity Securities Total Available- For-Sale Securities December 31, 2014 Available-For-Sale Securities, at Amortized Cost $ 137,540 $ 81,582 $ 124,732 $ 16,988 $ 1,120 $ 361,962 Available-For-Sale Securities, at Fair Value 137,603 81,730 128,827 16,725 1,254 366,139 Gross Unrealized Gains 208 187 4,100 7 134 4,636 Gross Unrealized Losses 145 39 5 270 — 459 Available-For-Sale Securities, Pledged as Collateral, at Fair Value 267,384 Securities in a Continuous Loss Position, at Fair Value: Less than 12 Months $ 39,631 $ 3,309 $ 82 $ — $ — $ 43,022 12 Months or Longer 28,020 14,035 1,546 10,738 — 54,339 Total $ 67,651 $ 17,344 $ 1,628 $ 10,738 $ — $ 97,361 Number of Securities in a Continuous Loss Position 22 65 3 15 — 105 Unrealized Losses on Securities in a Continuous Loss Position: Less than 12 Months $ 48 $ — $ — $ — $ — $ 48 12 Months or Longer 97 39 5 270 — 411 Total $ 145 $ 39 $ 5 $ 270 $ — $ 459 The following table is the schedule of Held-To-Maturity Securities at December 31, 2015 and 2014 : Held-To-Maturity Securities State and Municipal Obligations Mortgage- Backed Securities - Residential Corporate and Other Debt Securities Total Held-To Maturity Securities December 31, 2015 Held-To-Maturity Securities, at Amortized Cost $ 226,053 $ 93,558 $ 1,000 $ 320,611 Held-To-Maturity Securities, at Fair Value 230,621 94,309 1,000 325,930 Gross Unrealized Gains 4,619 868 — 5,487 Gross Unrealized Losses 51 117 — 168 Held-To-Maturity Securities, Pledged as Collateral, at Fair Value 299,767 Maturities of Debt Securities, at Amortized Cost: Within One Year 36,615 — — 36,615 From 1 - 5 Years 91,014 61,550 — 152,564 From 5 - 10 Years 94,418 32,008 — 126,426 Over 10 Years 4,006 — 1,000 5,006 Held-To-Maturity Securities State and Municipal Obligations Mortgage- Backed Securities - Residential Corporate and Other Debt Securities Total Held-To Maturity Securities Maturities of Debt Securities, at Fair Value: Within One Year 36,695 — — 36,695 From 1 - 5 Years 93,335 62,040 — 155,375 From 5 - 10 Years 96,498 32,269 — 128,767 Over 10 Years 4,093 — 1,000 5,093 Securities in a Continuous Loss Position, at Fair Value: Less than 12 Months $ 2,302 $ 6,000 $ — $ 8,302 12 Months or Longer 11,764 4,154 — 15,918 Total $ 14,066 $ 10,154 $ — $ 24,220 Number of Securities in a Continuous Loss Position 54 8 — 62 Unrealized Losses on Securities in a Continuous Loss Position: Less than 12 Months $ 11 $ 93 $ — $ 104 12 Months or Longer 40 24 — 64 Total $ 51 $ 117 $ — $ 168 December 31, 2014 Held-To-Maturity Securities, at Amortized Cost $ 188,472 $ 112,552 $ 1,000 $ 302,024 Held-To-Maturity Securities, at Fair Value 193,252 114,314 1,000 308,566 Gross Unrealized Gains 4,935 1,770 — 6,705 Gross Unrealized Losses 155 8 — 163 Held-To-Maturity Securities, Pledged as Collateral, at Fair Value 282,640 Securities in a Continuous Loss Position, at Fair Value: Less than 12 Months $ 2,143 $ 4,581 $ — $ 6,724 12 Months or Longer 16,033 — — 16,033 Total $ 18,176 $ 4,581 $ — $ 22,757 Number of Securities in a Continuous Loss Position 74 1 — 75 Unrealized Losses on Securities in a Continuous Loss Position: Less than 12 Months $ 17 $ 8 $ — $ 25 12 Months or Longer 138 — — 138 Total $ 155 $ 8 $ — $ 163 In the tables above, maturities of mortgage-backed-securities - residential are included based on their expected average lives. Actual maturities will differ from the table below because issuers may have the right to call or prepay obligations with or without prepayment penalties. In the available-for-sale category at December 31, 2015 , U.S. agency obligations consisted solely of U.S. Government Agency securities with an amortized cost of $ 155.9 million and a fair value of $ 155.8 million . Mortgage-backed securities-residential consisted of U.S. Government Agency securities with an amortized cost of $ 15.7 million and a fair value of $ 15.8 million and GSE securities with an amortized cost of $ 161.7 million and a fair value of $ 162.7 million . In the held-to-maturity category at December 31, 2015 , mortgage-backed securities-residential consisted of U.S. Government Agency securities with an amortized cost of $ 3.8 million and a fair value of $ 3.9 million and GSE securities with an amortized cost of $ 89.8 million and a fair value of $ 90.5 million . In the available-for-sale category at December 31, 2014 , U.S. agency obligations consisted solely of U.S. Government Agency securities with an amortized cost of $ 137.5 million and a fair value of $ 137.6 million . Mortgage-backed securities-residential consisted of U.S. Government Agency securities with an amortized cost of $ 23.0 million and a fair value of $ 23.6 million and GSE securities with an amortized cost of $ 101.7 million and a fair value of $ 105.2 million . In the held-to-maturity category at December 31, 2014 , mortgage-backed securities-residential consisted of U.S. Government Agency securities with an amortized cost of $ 4.4 million and a fair value of $ 4.5 million and GSE securities with an amortized cost of $ 108.1 million and a fair value of $ 109.8 million . Securities in a continuous loss position, in the tables above for December 31, 2015 and December 31, 2014 do not reflect any deterioration of the credit worthiness of the issuing entities. U.S. agency issues, including mortgage-backed securities, are all rated Aaa by Moody's and AA+ by Standard and Poor's. The state and municipal obligations are general obligations supported by the general taxing authority of the issuer, and in some cases are insured. Obligations issued by school districts are supported by state aid. For any non-rated municipal securities, credit analysis is performed in-house based upon data that has been submitted by the issuers to the NY State Comptroller. That analysis shows no deterioration in the credit worthiness of the municipalities. Subsequent to December 31, 2015 , there were no securities downgraded below investment grade. The unrealized losses on these temporarily impaired securities are primarily the result of changes in interest rates for fixed rate securities where the interest rate received is less than the current rate available for new offerings of similar securities, changes in market spreads as a result of shifts in supply and demand, and/or changes in the level of prepayments for mortgage related securities. Because we do not currently intend to sell any of our temporarily impaired securities, and because it is not more likely-than-not we would be required to sell the securities prior to recovery, the impairment is considered temporary. Pledged securities, in the tables above, are primarily used to collateralize state and municipal deposits, as required under New York State law. A small portion of the pledged securities are used to collateralize repurchase agreements and pooled deposits of our trust customers. Schedule of Federal Reserve Bank and Federal Home Loan Bank Stock Federal Reserve Bank and Federal Home Loan Bank Stock are carried at cost. December 31, 2015 2014 Federal Reserve Bank Stock $ 1,060 $ 1,048 Federal Home Loan Bank Stock 7,779 3,803 Total Federal Reserve Bank and Federal Home Loan Bank Stock $ 8,839 $ 4,851

Loans

Loans	12 Months Ended
	Dec. 31, 2015
Loans and Leases Receivable Disclosure [Abstract]
Financing Receivables [Text Block]	LOANS (Dollars In Thousands) Loan Categories and Past Due Loans The following table presents loan balances outstanding as of December 31, 2015 and December 31, 2014 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 Real Estate Consumer Residential Total December 31, 2015 Loans Past Due 30-59 Days $ 98 $ — $ 4,598 $ 955 $ 5,651 Loans Past Due 60-89 Days 186 — 1,647 1,370 3,203 Loans Past Due 90 or More Days 203 1,469 295 2,184 4,151 Total Loans Past Due 487 1,469 6,540 4,509 13,005 Current Loans 102,100 383,470 457,983 617,394 1,560,947 Total Loans $ 102,587 $ 384,939 $ 464,523 $ 621,903 $ 1,573,952 Loans 90 or More Days Past Due and Still Accruing Interest $ — $ — $ — $ 187 $ 187 Nonaccrual Loans $ 387 $ 2,401 $ 450 $ 3,195 $ 6,433 December 31, 2014 Loans Past Due 30-59 Days $ 124 $ 432 $ 4,167 $ 482 $ 5,205 Loans Past Due 60-89 Days 154 7 1,225 1,495 2,881 Loans Past Due 90 or more Days 345 1,832 206 2,999 5,382 Total Loans Past Due 623 2,271 5,598 4,976 13,468 Current Loans 98,888 337,841 431,443 531,628 1,399,800 Total Loans $ 99,511 $ 340,112 $ 437,041 $ 536,604 $ 1,413,268 Loans 90 or More Days Past Due and Still Accruing Interest $ — $ — $ — $ 537 $ 537 Nonaccrual Loans $ 473 $ 2,071 $ 415 $ 3,940 $ 6,899 The Company disaggregates its loan portfolio into the following four categories: Commercial - The Company offers a variety of loan options to meet the specific needs of our commercial customers including term loans, time notes and lines of credit. Such loans are made available to businesses for working capital needs such as inventory and receivables, business expansion and equipment purchases. Generally, a collateral lien is placed on equipment or other assets owned by the borrower. These loans carry a higher risk than commercial real estate loans due to the nature of the underlying collateral, which can be business assets such as equipment and accounts receivable and generally have a lower liquidation value than real estate. In the event of default by the borrower, the Company may be required to liquidate collateral at deeply discounted values. To reduce the risk, management usually obtains personal guarantees of the borrowers. Commercial Real Estate - The Company offers commercial real estate loans to finance real estate purchases, refinancings, expansions and improvements to commercial properties. Commercial real estate loans are made to finance the purchases of real property which generally consists of real estate with completed structures. These commercial real estate loans are secured by first liens on the real estate, which may include apartments, commercial structures, housing businesses, healthcare facilities, and both owner and non owner-occupied facilities. These loans are typically less risky than commercial loans, since they are secured by real estate and buildings, and are generally originated in amounts of no more than 80% of the appraised value of the property. However, the Company also offers commercial construction and land development loans to finance projects, primarily within the communities that we serve. Many projects will ultimately be used by the borrowers' businesses, while others are developed for resale. These real estate loans are also secured by first liens on the real estate, which may include apartments, commercial structures, housing business, healthcare facilities and both owner-occupied and non-owner-occupied facilities. There is enhanced risk during the construction period, since the loan is secured by an incomplete project. Consumer Loans - The Company offers a variety of consumer installment loans to finance personal expenditures. Most of these loans carry a fixed rate of interest with principal repayment terms typically ranging from one to five years, based upon the nature of the collateral and the size of the loan. In addition to installment loans, the Company also offers personal lines of credit and overdraft protection. Several loans are unsecured, which carry a higher risk of loss. Also included in this category are automobile loans. The Company primarily finances the purchases of automobiles indirectly through dealer relationships located throughout upstate New York and Vermont. Most of these loans carry a fixed rate of interest with principal repayment terms typically ranging from three to seven years. Indirect consumer loans are underwritten on a secured basis using the underlying collateral being financed. Residential - Residential real estate loans consist primarily of loans secured by first or second mortgages on primary residences. We originate adjustable-rate and fixed-rate one-to-four-family residential real estate loans for the construction, purchase or refinancing of an existing mortgage. These loans are collateralized primarily by owner-occupied properties generally located in the Company’s market area. Loans on one-to-four-family residential real estate are generally originated in amounts of no more than 80% of the purchase price or appraised value (whichever is lower), or have private mortgage insurance. The Company’s underwriting analysis for residential mortgage loans typically includes credit verification, independent appraisals, and a review of the borrower’s financial condition. Mortgage title insurance and hazard insurance are normally required. It is our general practice to underwrite our residential real estate loans to secondary market standards. Construction loans have a unique risk, because they are secured by an incomplete dwelling. This risk is reduced through periodic site inspections, including one at each loan draw period. In addition, the Company offers fixed home equity loans as well as home equity lines of credit to consumers to finance home improvements, debt consolidation, education and other uses. Our policy allows for a maximum loan to value ratio of 80%, although periodically higher advances are allowed. The Company originates home equity lines of credit and second mortgage loans (loans secured by a second junior lien position on one-to-four-family residential real estate). Risk is generally reduced through underwriting criteria, which include credit verification, appraisals, a review of the borrower's financial condition, and personal cash flows. A security interest, with title insurance when necessary, is taken in the underlying real estate. 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 Real Estate Consumer Residential Unallocated Total Rollfoward of the Allowance for Loan Losses for the Year Ended: December 31, 2014 $ 2,100 $ 4,128 $ 5,210 $ 3,369 $ 763 $ 15,570 Charge-offs (62 ) (7 ) (711 ) (326 ) — (1,106 ) Recoveries 34 — 193 — — 227 Provision (245 ) 399 862 747 (416 ) 1,347 December 31, 2015 $ 1,827 $ 4,520 $ 5,554 $ 3,790 $ 347 $ 16,038 December 31, 2013 $ 1,886 $ 3,962 $ 4,478 $ 3,026 $ 1,082 $ 14,434 Charge-offs (212 ) — (718 ) (91 ) — (1,021 ) Recoveries 86 — 223 — — 309 Provision 340 166 1,227 434 (319 ) 1,848 December 31, 2014 $ 2,100 $ 4,128 $ 5,210 $ 3,369 $ 763 $ 15,570 December 31, 2012 $ 2,344 $ 3,651 $ 4,840 $ 3,405 $ 1,058 $ 15,298 Charge-offs (926 ) (11 ) (459 ) (15 ) — (1,411 ) Recoveries 88 — 259 — — 347 Provision 380 322 (162 ) (364 ) 24 200 December 31, 2013 $ 1,886 $ 3,962 $ 4,478 $ 3,026 $ 1,082 $ 14,434 Allowance for Loan Losses Commercial Commercial Real Estate Consumer Residential Unallocated Total December 31, 2015 Allowance for loan losses - Loans Individually Evaluated for Impairment $ — $ — $ — $ — $ — $ — Allowance for loan losses - Loans Collectively Evaluated for Impairment $ 1,827 $ 4,520 $ 5,554 $ 3,790 $ 347 $ 16,038 Ending Loan Balance - Individually Evaluated for Impairment $ 155 $ 2,372 $ 114 $ 645 $ — $ 3,286 Ending Loan Balance - Collectively Evaluated for Impairment $ 102,432 $ 382,567 $ 464,409 $ 621,258 $ — $ 1,570,666 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 $ 4,128 $ 5,210 $ 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 $ 338,620 $ 436,923 $ 534,367 $ — $ 1,408,927 Through the provision for loan losses, an allowance for loan losses is maintained that reflects our best estimate of the inherent risk of loss in the Company’s loan portfolio as of the balance sheet date. Additions are made to the allowance for loan losses through a periodic provision for loan losses. Actual loan losses are charged against the allowance for loan losses when loans are deemed uncollectible and recoveries of amounts previously charged off are recorded as credits to the allowance for loan losses. Our loan officers and risk managers meet at least quarterly to discuss and review the conditions and risks associated with certain criticized and classified commercial-related relationships. In addition, our independent internal loan review department performs periodic reviews of the credit quality indicators on individual loans in our commercial loan portfolio. We use a two-step process to determine the provision for loan losses and the amount of the allowance for loan losses. We measure impairment on our impaired loans on a quarterly basis. Our impaired loans are generally nonaccrual loans over $250 thousand and all troubled debt restructured loans. Our impaired loans are generally considered to be collateral dependent with the specific reserve, if any, determined based on the value of the collateral less estimated costs to sell. The remainder of the portfolio is evaluated on a pooled basis, as described below. For each homogeneous loan pool, we estimate a total loss factor based on the historical net loss rates adjusted for applicable qualitative factors. We update the total loss factors assigned to each loan category on a quarterly basis. Our indirect automobile loan portfolio reflects a modest shift, since mid 2013, to a slightly larger percentage of loans within the portfolio comprised of loans to individuals with lower credit scores. For the commercial, commercial construction, and commercial real estate categories, we further segregate the loan categories by credit risk profile (pools of loans graded pass, special mention and accruing substandard). Additional description of the credit risk classifications is detailed in the Credit Quality Indicators section of this note. We determine the historical net loss rate for each loan category using a trailing three-year net charge-off average. While historical net loss experience provides a reasonable starting point for our analysis, historical net losses, or even recent trends in net losses, do not by themselves form a sufficient basis to determine the appropriate level of the allowance for loan losses. Therefore, we also consider and adjust historical net loss factors for qualitative factors that impact the inherent risk of loss associated with our loan categories within our total loan portfolio. These include: • Changes in the volume and severity of past due, nonaccrual and adversely classified loans • Changes in the nature and volume of the portfolio and in the terms of loans • Changes in the value of the underlying collateral for collateral dependent loans • Changes in lending policies and procedures, including changes in underwriting standards and collection, charge-off, and recovery practices not considered elsewhere in estimating credit losses • Changes in the quality of the loan review system • Changes in the experience, ability, and depth of lending management and other relevant staff • Changes in international, national, regional, and local economic and business conditions and developments that affect the collectability of the portfolio • The existence and effect of any concentrations of credit, and changes in the level of such concentrations • The effect of other external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in the existing portfolio or pool While not a significant part of the allowance for loan losses methodology, we also maintain an unallocated portion of the total allowance for loan losses related to the overall level of imprecision inherent in the estimation of the appropriate level of allowance for loan losses. Loan Credit Quality Indicators The following table presents the credit quality indicators by loan category at December 31, 2015 and December 31, 2014 : Loan Credit Quality Indicators Commercial Commercial Real Estate Consumer Residential Total December 31, 2015 Credit Risk Profile by Creditworthiness Category: Satisfactory $ 93,607 $ 360,654 $ 454,261 Special Mention 1,070 4,901 5,971 Substandard 7,910 19,384 27,294 Doubtful — — — Credit Risk Profile Based on Payment Activity: Performing $ 464,074 $ 618,521 1,082,595 Nonperforming 449 3,382 3,831 December 31, 2014 Credit Risk Profile by Creditworthiness Category: Satisfactory $ 85,949 $ 317,747 $ 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 $ 436,626 $ 532,127 968,753 Nonperforming 415 4,477 4,892 For the purposes of the table above, nonperforming automobile, residential and other consumer loans are those loans on nonaccrual status or are 90 days or more past due and still accruing interest. For the allowance calculation, we use an internally developed system of five credit quality indicators to rate the credit worthiness of each commercial loan defined as follows: 1) Satisfactory - "Satisfactory" borrowers have acceptable financial condition with satisfactory record of earnings and sufficient historical and projected cash flow to service the debt. Borrowers have satisfactory repayment histories and primary and secondary sources of repayment can be clearly identified; 2) Special Mention - Loans in this category have potential weaknesses that deserve management ’ s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in the institution ’ s credit position at some future date. "Special mention" assets are not adversely classified and do not expose an institution to sufficient risk to warrant adverse classification. Loans which might be assigned this credit quality indicator include loans to borrowers with deteriorating financial strength and/or earnings record and loans with potential for problems due to weakening economic or market conditions; 3) Substandard - Loans classified as “ substandard ” are inadequately protected by the current sound net worth or paying capacity of the borrower or the collateral pledged, if any. Loans in this category have well defined weaknesses that jeopardize the repayment. They are characterized by the distinct possibility that the bank will sustain some loss if the deficiencies are not corrected. “ Substandard ” loans may include loans which are likely to require liquidation of collateral to effect repayment, and other loans where character or ability to repay has become suspect. Loss potential, while existing in the aggregate amount of substandard assets, does not have to exist in individual assets classified substandard; 4) Doubtful - Loans classified as “ doubtful ” have all of the weaknesses inherent in those classified as “ substandard ” with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of current existing facts, conditions, and values highly questionable and improbable. Although possibility of loss is extremely high, classification of these loans as “ loss ” has been deferred due to specific pending factors or events which may strengthen the value (i.e. possibility of additional collateral, injection of capital, collateral liquidation, debt restructure, economic recovery, etc). Loans classified as “ doubtful ” need to be placed on non-accrual; and 5) Loss - Loans classified as “ loss ” are considered uncollectible and of such little value that their continuance as bankable assets is not warranted. As of the date of the balance sheet, all loans in this category have been charged-off to the allowance for loan losses. Commercial loans are generally evaluated on an annual basis depending on the size and complexity of the loan relationship, unless the credit related quality indicator falls to a level of "special mention" or below, when the loan is evaluated quarterly. The credit quality indicator is one of the factors used in assessing the level of inherent risk of loss in our commercial related loan portfolios. 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 Real Estate Consumer Residential Total December 31, 2015 Recorded Investment: With No Related Allowance $ 155 $ 2,372 $ 114 $ 645 $ 3,286 With a Related Allowance — — — — — Unpaid Principal Balance: With No Related Allowance $ 155 $ 2,372 $ 144 $ 645 $ 3,316 With a Related Allowance — — — — — 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 For the Year-To-Date Period Ended: December 31, 2015 Average Recorded Balance: With No Related Allowance $ 325 $ 1,932 $ 116 $ 1,162 $ 3,535 With a Related Allowance — — — 280 $ 280 Interest Income Recognized: With No Related Allowance $ — $ 9 $ 14 $ — $ 23 With a Related Allowance — — — — — Cash Basis Income: With No Related Allowance $ — $ — $ — $ — $ — With a Related Allowance — — — — — Related Allowance — — — — $ — 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 — — — — — 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 — — — — $ — At December 31, 2015 and December 31, 2014 , all impaired loans were considered to be collateral dependent and were therefore evaluated for impairment based on the fair value of collateral less estimated cost to sell. Interest income recognized in the table above, represents income earned after the loans became impaired and includes restructured loans in compliance with their modified terms and nonaccrual loans where we have recognized interest income on a cash basis. 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 Real Estate Consumer Residential Total For the Year Ended: December 31, 2015 Number of Loans — 1 4 — 5 Pre-Modification Outstanding Recorded Investment $ — $ 883 $ 51 $ — $ 934 Post-Modification Outstanding Recorded Investment $ — $ 883 $ 51 $ — $ 934 Subsequent Default, Number of Contracts — — — — — Subsequent Default, Recorded Investment — — — — — Commitments to lend additional funds to modified loans — — — — — 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 — — — — — In general, loans requiring modification are restructured to accommodate the projected cash-flows of the borrower. Such modifications may involve a reduction of the interest rate, a significant deferral of payments or forgiveness of a portion of the outstanding principal balance. As indicated in the table above, no loans modified during the preceding twelve months subsequently defaulted as of December 31, 2015 or December 31, 2014 . Schedule of Supplemental Loan Information 2015 2014 Supplemental Information : Unamortized deferred loan origination costs, net of deferred loan origination fees, included in the above balances $ 3,268 $ 2,771 Overdrawn deposit accounts, included in the above balances 477 973 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 396,956 313,355 Residential real estate loans serviced for Freddie Mac, not included in the balances above 153,795 158,598 Loans held for sale at period-end, included in the above balances 298 398 Loans to Related Parties: Balance at beginning of year $ 6,003 $ 7,769 Adjustment due to change in composition of related parties 2,610 — New loans and renewals, during the year 2,770 694 Repayments, during the year (1,788 ) (2,460 ) Balance at end of year $ 9,595 $ 6,003

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment Disclosure [Text Block]	PREMISES AND EQUIPMENT (In Thousands) A summary of premises and equipment at December 31, 2015 and 2014 is presented below: 2015 2014 Land and Bank Premises $ 34,609 $ 35,062 Equipment, Furniture and Fixtures 22,879 22,003 Leasehold Improvements 1,461 1,218 Total Cost 58,949 58,283 Accumulated Depreciation and Amortization (31,509 ) (29,795 ) Net Premises and Equipment $ 27,440 $ 28,488 Amounts charged to expense for depreciation totaled $ 1,892 , $ 1,879 and $ 1,928 in 2015 , 2014 and 2013 , respectively.

Other Intangible Assets

Other Intangible Assets	12 Months Ended
	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets Disclosure [Text Block]	OTHER INTANGIBLE ASSETS (In Thousands) The following table presents information on Arrow ’ s other intangible assets (other than goodwill) as of December 31, 2015 , 2014 and 2013 : Depositor Intangibles 1 Mortgage Servicing Rights 2 Customer Intangibles 1 Total Gross Carrying Amount, December 31, 2015 $ 2,247 $ 1,822 $ 4,382 $ 8,451 Accumulated Amortization (2,247 ) (1,143 ) (1,954 ) (5,344 ) Net Carrying Amount, December 31, 2015 $ — $ 679 $ 2,428 $ 3,107 Gross Carrying Amount, December 31, 2014 $ 2,247 $ 1,715 $ 4,451 $ 8,413 Accumulated Amortization (2,237 ) (883 ) (1,668 ) (4,788 ) Net Carrying Amount, December 31, 2014 $ 10 $ 832 $ 2,783 $ 3,625 Rollforward of Intangible Assets: Balance, December 31, 2012 $ 153 $ 859 $ 3,480 $ 4,492 Intangible Assets Acquired — 331 — 331 Amortization of Intangible Assets (92 ) (230 ) (361 ) (683 ) Balance, December 31, 2013 61 960 3,119 4,140 Intangible Assets Acquired — 133 — 133 Amortization of Intangible Assets (51 ) (261 ) (336 ) (648 ) Balance, December 31, 2014 10 832 2,783 3,625 Intangible Assets Acquired — 107 — 107 Intangible Assets Disposed — — (38 ) (38 ) Amortization of Intangible Assets (10 ) (260 ) (317 ) (587 ) Balance, December 31, 2015 $ — $ 679 $ 2,428 $ 3,107 1 Amortization of depositor intangibles and customer intangibles are reported in the consolidated statements of income as a component of other operating expense. 2 Amortization of mortgage servicing rights is reported in the consolidated statements of income as a reduction of mortgage servicing fee income, which is included with fees for other services to customers. The following table presents the remaining estimated annual amortization expense for Arrow's intangible assets as of December 31, 2015 : Mortgage Servicing Rights 2 Customer Intangibles 1 Total Estimated Annual Amortization Expense: 2016 $ 250 $ 293 $ 543 2017 190 273 463 2018 136 256 392 2019 62 239 301 2020 31 226 257 Later Years 10 1,141 1,151 Total $ 679 $ 2,428 $ 3,107 1 Amortization of customer intangibles are reported in the consolidated statements of income as a component of other operating expense. 2 Amortization of mortgage servicing rights is reported in the consolidated statements of income as a reduction of mortgage servicing fee income, which is included with fees for other services to customers.

Guarantees

Guarantees	12 Months Ended
	Dec. 31, 2015
Guarantees [Abstract]
Guarantees [Text Block]	GUARANTEES (Dollars In Thousands) The following table presents the notional amount and fair value of Arrow's off-balance sheet commitments to extend credit and commitments under standby letters of credit as of December 31, 2015 and 2014 : Balance at December 31, 2015 2014 Notional Amount: Commitments to Extend Credit $ 278,623 $ 249,803 Standby Letters of Credit 3,065 3,317 Fair Value: Commitments to Extend Credit $ — $ — Standby Letters of Credit 2 39 Arrow is party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. Commitments to extend credit include home equity lines of credit, commitments for residential and commercial construction loans and other personal and commercial lines of credit. Those instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the consolidated balance sheets. The contract or notional amounts of those instruments reflect the extent of the involvement Arrow has in particular classes of financial instruments. Arrow's exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is represented by the contractual notional amount of those instruments. Arrow uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. Arrow evaluates each customer's creditworthiness on a case-by-case basis. Home equity lines of credit are secured by residential real estate. Construction lines of credit are secured by underlying real estate. For other lines of credit, the amount of collateral obtained, if deemed necessary by Arrow upon extension of credit, is based on management's credit evaluation of the counterparty. Collateral held varies, but may include accounts receivable, inventory, property, plant and equipment, and income-producing commercial properties. Most of the commitments are variable rate instruments. Arrow does not issue any guarantees that would require liability-recognition or disclosure, other than its standby letters of credit. Arrow has issued conditional commitments in the form of standby letters of credit to guarantee payment on behalf of a customer and guarantee the performance of a customer to a third party. Standby letters of credit generally arise in connection with lending relationships. The credit risk involved in issuing these instruments is essentially the same as that involved in extending loans to customers. Contingent obligations under standby letters of credit at December 31, 2015 and 2014 represent the maximum potential future payments Arrow could be required to make. Typically, these instruments have terms of 12 months or less and expire unused; therefore, the total amounts do not necessarily represent future cash requirements. Each customer is evaluated individually for creditworthiness under the same underwriting standards used for commitments to extend credit and on-balance sheet instruments. Company policies governing loan collateral apply to standby letters of credit at the time of credit extension. Loan-to-value ratios will generally range from 50% for movable assets, such as inventory, to 100% for liquid assets, such as bank CD's. Fees for standby letters of credit range from 1% to 3% of the notional amount. Fees are collected upfront and amortized over the life of the commitment. The carrying amount and fair value of Arrow's standby letters of credit at December 31, 2015 and 2014 were insignificant. The fair value of standby letters of credit is based on the fees currently charged for similar agreements or the cost to terminate the arrangement with the counterparties. The fair value of commitments to extend credit is determined by estimating the fees to enter into similar agreements, taking into account the remaining terms and present creditworthiness of the counterparties, and for fixed rate loan commitments, the difference between the current and committed interest rates. Arrow provides several types of commercial lines of credit and standby letters of credit to its commercial customers. The pricing of these services is not isolated as Arrow considers the customer's complete deposit and borrowing relationship in pricing individual products and services. The commitments to extend credit also include commitments under home equity lines of credit, for which Arrow charges no fee. The carrying value and fair value of commitments to extend credit are not material and Arrow does not expect to incur any material loss as a result of these commitments. In the normal course of business, Arrow and its subsidiary banks become involved in a variety of routine legal proceedings. At present, there are no legal proceedings pending or threatened, which in the opinion of management and counsel, would result in a material loss to Arrow.

Time Deposits

Time Deposits	12 Months Ended
	Dec. 31, 2015
Time Deposits [Abstract]
Deposit Liabilities Disclosures [Text Block]	TIME DEPOSITS (Dollars In Thousands) The following summarizes the contractual maturities of time deposits during years subsequent to December 31, 2015 : Year of Maturity Total Time Deposits 2016 $ 110,935 2017 29,008 2018 16,440 2019 16,743 2020 8,731 2021 and Beyond 7,960 Total $ 189,817

Debt

Debt	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Debt [Text Block]	DEBT (Dollars in Thousands) Schedule of Short-Term Borrowings: 2015 2014 Balances at December 31: Overnight Advances from the Federal Home Loan Bank of New York $ 82,000 $ 41,000 Securities Sold Under Agreements to Repurchase 23,173 19,421 Total Short-Term Borrowings $ 105,173 $ 60,421 Maximum Borrowing Capacity at December 31: Federal Funds Purchased $ 35,000 $ 35,000 Overnight Advances from the Federal Home Loan Bank of New York 396,956 278,886 Federal Reserve Bank of New York 319,623 307,159 Securities sold under agreements to repurchase mature in one day. Arrow maintains effective control over the securities underlying the agreements. Arrow's subsidiary banks have in place unsecured federal funds lines of credit with two correspondent banks. As a member of the FHLBNY, we participate in the advance program which allows for overnight and term advances up to the limit of pledged collateral, including FHLBNY stock, residential real estate and home equity loans (see Note 4. "Investment Securities" and Note 5. "Loans"). Our investment in FHLBNY stock is proportional to the total of our overnight and term advances (see the Schedule of Federal Reserve Bank and Federal Home Loan Bank Stock in Note 4. "Investment Securities"). Our bank subsidiaries have also established borrowing facilities with the Federal Reserve Bank of New York for potential “discount window” advances, pledging certain consumer loans as collateral (see Note 5. "Loans"). Long Term Debt - FHLBNY Term Advances In addition to overnight advances, Arrow also borrows longer-term funds from the FHLBNY. Maturity Schedule of FHBLNY Term Advances : Balances Weighted Average Rate Final Maturity 2015 2014 2015 2014 First Year $ — $ 10,000 — % 3.88 % Second Year — — — % — % Third Year 10,000 — 1.50 % — % Fourth Year 20,000 — 1.70 % — % Fifth Year 25,000 — 2.02 % — % Total $ 55,000 $ 10,000 1.81 % 3.88 % Long Term Debt - Guaranteed Preferred Beneficial Interests in Corporation's Junior Subordinated Debentures During 2015 , there were outstanding two classes of financial instruments issued by two separate subsidiary business trusts of Arrow, identified as “Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts” on the Consolidated Balance Sheets and the Consolidated Statements of Income. The first of the two classes of trust-issued instruments outstanding at year-end was issued by Arrow Capital Statutory Trust II ("ACST II"), a Delaware business trust established on July 16, 2003, upon the filing of a certificate of trust with the Delaware Secretary of State. In July 2003, ACST II issued all of its voting (common) stock to Arrow and issued and sold to an unaffiliated purchaser 30-year guaranteed preferred beneficial interests in the trust's assets ("ACST II trust preferred securities"). The rate on the securities is variable, adjusting quarterly to the 3-month LIBOR plus 3.15%. ACST II used the proceeds of the sale of its trust preferred securities to purchase an identical amount of junior subordinated debentures issued by Arrow that bear an interest rate identical at all times to the rate payable on the ACST II trust preferred securities. The ACST II trust preferred securities became redeemable after July 23, 2008 and mature on July 23, 2033. The second of the two classes of trust-issued instruments outstanding at year-end was issued by Arrow Capital Statutory Trust III ("ACST III"), a Delaware business trust established on December 23, 2004, upon the filing of a certificate of trust with the Delaware Secretary of State. On December 28, 2004, the ACST III issued all of its voting (common) stock to Arrow and issued and sold to an unaffiliated purchaser 30-year guaranteed preferred beneficial interests in the trust's assets ("ACST III"). The rate on the ACST III trust preferred securities is a variable rate, adjusted quarterly, equal to the 3-month LIBOR plus 2.00%. ACST III used the proceeds of the sale of its trust preferred securities to purchase an identical amount of junior subordinated debentures issued by Arrow that bear an interest rate identical at all times to the rate payable on the ACST III trust preferred securities. The ACST III trust preferred securities became redeemable on or after March 31, 2010 and mature on December 28, 2034. The primary assets of the two subsidiary trusts having trust preferred securities outstanding at year-end, ACST II and ACST III (the “Trusts”), are Arrow's junior subordinated debentures discussed above, and the sole revenues of the Trusts are payments received by them from Arrow with respect to the junior subordinated debentures. The trust preferred securities issued by the Trusts are non-voting. All common voting securities of the Trusts are owned by Arrow. Arrow used the net proceeds from its sale of junior subordinated debentures to the Trusts, facilitated by the Trust’s sale of their trust preferred securities to the purchasers thereof, for general corporate purposes. The trust preferred securities and underlying junior subordinated debentures, with associated expense that is tax deductible, qualify as Tier I capital under regulatory definitions. Arrow's primary source of funds to pay interest on the debentures that are held by the Trusts are current dividends received by Arrow from its subsidiary banks. Accordingly, Arrow's ability to make payments on the debentures, and the ability of the Trusts to make payments on their trust preferred securities, are dependent upon the continuing ability of Arrow's subsidiary banks to pay dividends to Arrow. Since the trust preferred securities issued by the subsidiary trusts and the underlying junior subordinated debentures issued by Arrow at December 31, 2015 , 2014 and 2013 are classified as debt for financial statement purposes, the expense associated with these securities is recorded as interest expense in the consolidated statements of income for the three years. Schedule of Guaranteed Preferred Beneficial Interests in Corporation's Junior Subordinated Debentures 2015 2014 ACST II Balance at December 31, $ 10,000 $ 10,000 Period-End Interest Rate 3.48 % 3.38 % ACST III Balance at December 31, $ 10,000 $ 10,000 Period-End Interest Rate 2.33 % 2.23 %

Comprehensive Income

Comprehensive Income	12 Months Ended
	Dec. 31, 2014
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income, Noncontrolling Interest [Text Block]	COMPREHENSIVE INCOME (Dollars In Thousands) The following table presents the components of other comprehensive income for the years ended December 31, 2015 , 2014 and 2013 : Schedule of Comprehensive Income Before-Tax Amount Tax (Expense) Benefit Net-of-Tax Amount 2015 Net Unrealized Securities Holding Gains Arising During the Period $ (3,017 ) $ 1,185 $ (1,832 ) Reclassification Adjustment for Securities Gains Included in Net Income (129 ) 51 (78 ) Net Retirement Plan Loss 1,395 (547 ) 848 Net Retirement Plan Prior Service Credit (368 ) 144 (224 ) Amortization of Net Retirement Plan Actuarial Loss 846 (332 ) 514 Accretion of Net Retirement Plan Prior Service Credit (56 ) 22 (34 ) Other Comprehensive Income $ (1,329 ) $ 523 $ (806 ) 2014 Net Unrealized Securities Holding Gains Arising During the Period $ 356 $ (124 ) $ 232 Reclassification Adjustment for Securities Gains Included in Net Income (110 ) 43 (67 ) Net Retirement Plan Gain (4,610 ) 1,764 (2,846 ) Amortization of Net Retirement Plan Actuarial Loss 474 (186 ) 288 Accretion of Net Retirement Plan Prior Service Credit (87 ) 34 (53 ) Other Comprehensive Income $ (4,547 ) $ 1,754 $ (2,793 ) 2013 Net Unrealized Securities Holding Gains Arising During the Period $ (4,843 ) $ 1,918 $ (2,925 ) Reclassification Adjustment for Securities Gains Included in Net Income (540 ) 214 (326 ) Net Retirement Plan Loss 10,640 (4,215 ) 6,425 Net Retirement Plan Prior Service Credit — — — Amortization of Net Retirement Plan Actuarial Loss 1,513 (599 ) 914 Accretion of Net Retirement Plan Prior Service Credit 2 (1 ) 1 Other Comprehensive Income $ 6,772 $ (2,683 ) $ 4,089 The following table presents the changes in accumulated other comprehensive income by component: Changes in Accumulated Other Comprehensive Income (Loss) by Component (1) Unrealized Defined Benefit Plan Items Gains and Losses on Net Prior Available-for- Net Gain Service Sale Securities (Loss) (Cost ) Credit Total For the Year-To-Date periods ended: December 31, 2014 $ 2,539 $ (9,255 ) $ (450 ) $ (7,166 ) Other comprehensive income (loss) before reclassifications (1,832 ) 848 (224 ) (1,208 ) Amounts reclassified from accumulated other comprehensive income (loss) (78 ) 514 (34 ) 402 Net current-period other comprehensive income (1,910 ) 1,362 (258 ) (806 ) December 31, 2015 $ 629 $ (7,893 ) $ (708 ) $ (7,972 ) December 31, 2013 $ 2,374 $ (6,697 ) $ (50 ) $ (4,373 ) Other comprehensive income (loss) before reclassifications 232 (2,846 ) (347 ) (2,961 ) Amounts reclassified from accumulated other comprehensive income (loss) (67 ) 288 (53 ) 168 Net current-period other comprehensive income 165 (2,558 ) (400 ) (2,793 ) December 31, 2014 $ 2,539 $ (9,255 ) $ (450 ) $ (7,166 ) December 31, 2012 $ 5,625 $ (14,036 ) $ (51 ) $ (8,462 ) Other comprehensive income (loss) before reclassifications (2,925 ) 6,425 — 3,500 Amounts reclassified from accumulated other comprehensive income (loss) (326 ) 914 1 589 Net current-period other comprehensive income (3,251 ) 7,339 1 4,089 December 31, 2013 $ 2,374 $ (6,697 ) $ (50 ) $ (4,373 ) (1) All amounts are net of tax. Amounts in parentheses indicate debits. The following table presents the reclassifications out of accumulated other comprehensive income: Reclassifications Out of Accumulated Other Comprehensive Income (1) Amounts Reclassified Details about Accumulated Other from Accumulated Other Affected Line Item in the Statement Comprehensive Income Components Comprehensive Income Where Net Income Is Presented For the Year-to-date periods ended: December 31, 2015 Unrealized gains and losses on available-for-sale securities $ 129 Gain on Securities Transactions, Net 129 Total before tax (51 ) Provision for Income Taxes $ 78 Net of tax Amortization of defined benefit pension items Prior-service costs $ 56 (2) Salaries and Employee Benefits Actuarial gains/(losses) (846 ) (2) Salaries and Employee Benefits (790 ) Total before tax 310 Provision for Income Taxes $ (480 ) Net of tax Total reclassifications for the period $ (402 ) Net of tax December 31, 2014 Unrealized gains and losses on available-for-sale securities $ 110 Gain on Securities Transactions, Net 110 Total before tax (43 ) Provision for Income Taxes $ 67 Net of tax Amortization of defined benefit pension items Prior-service costs 87 (2) Salaries and Employee Benefits Actuarial gains/(losses) $ (474 ) (2) Salaries and Employee Benefits (387 ) Total before tax 152 Provision for Income Taxes $ (235 ) Net of tax Total reclassifications for the period $ (168 ) Net of tax Reclassifications Out of Accumulated Other Comprehensive Income (1) Amounts Reclassified Details about Accumulated Other from Accumulated Other Affected Line Item in the Statement Comprehensive Income Components Comprehensive Income Where Net Income Is Presented December 31, 2013 Unrealized gains and losses on available-for-sale securities $ 540 Gain on Securities Transactions, Net 540 Total before tax (214 ) Provision for Income Taxes $ 326 Net of tax Amortization of defined benefit pension items Prior-service costs (2 ) (2) Salaries and Employee Benefits Actuarial gains/(losses) $ (1,513 ) (2) Salaries and Employee Benefits (1,515 ) Total before tax 600 Provision for Income Taxes $ (915 ) Net of tax Total reclassifications for the period $ (589 ) Net of tax (1) Amounts in parentheses indicate debits to profit/loss. (2) These accumulated other comprehensive income components are included in the computation of net periodic pension cost (see pension footnote for additional details).

Stock Based Compensation

Stock Based Compensation	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	STOCK BASED COMPENSATION (Dollars In Thousands, Except Share and Per Share Amounts) Arrow has established two stock based compensation plans: an Incentive and Non-qualified Stock Option Plan (Stock Option Plan) and an Employee Stock Ownership Plan (ESOP). All share and per share data have been adjusted for the September 2015 2% stock dividend. Stock Option Plan Options may be granted at a price no less than the greater of the par value or fair market value of such shares on the date on which such option is granted, and generally expire ten years from the date of grant. The options usually vest over a four-year period. Roll Forward Schedule of Stock Option Plan by Shares and Weighted Average Exercise Prices Stock Option Plans Roll Forward of Shares Outstanding: Outstanding at January 1, 2015 409,471 Granted 55,590 Exercised (43,589 ) Forfeited (11,990 ) Outstanding at December 31, 2015 409,482 Exercisable at December 31, 2015 275,401 Vested and Expected to Vest 134,081 Roll Forward of Shares Outstanding - Weighted Average Exercise Price: Outstanding at January 1, 2015 $ 22.04 Granted 25.35 Exercised 21.04 Forfeited 23.23 Outstanding at December 31, 2015 22.59 Exercisable at December 31, 2015 21.68 Vested and Expected to Vest 24.47 Weighted Average Remaining Contractual Life (in years): Outstanding at December 31, 2015 5.72 Exercisable at December 31, 2015 4.52 Vested and Expected to Vest 8.19 Aggregate Intrinsic Value: Outstanding at December 31, 2015 $ 1,875 Exercisable at December 31, 2015 1,512 Vested and Expected to Vest 363 Shares Available for Grant at Period-End 401,000 Schedule of Shares Authorized Under the Stock Option Plan by Exercise Price Range Exercise Price Ranges $18.71 to $19.48 $20.82 $21.83 $23.30 to $23.95 $24.51 to $25.27 Total Outstanding Options at December 31, 2015 Number of Shares Outstanding 65,112 13,150 134,458 67,565 129,197 409,482 Weighted-Average Remaining Contractual Life (in years) 2.74 0.92 4.78 6.07 8.51 5.72 Weighted-Average Exercise Price $ 18.89 $ 20.41 $ 22.21 $ 23.48 $ 24.60 $ 22.59 Exercisable Options at December 31, 2015 Number of Shares Outstanding 65,112 13,150 129,679 49,747 17,713 275,401 Weighted-Average Remaining Contractual Life (in years) 2.74 0.92 4.69 6.07 8.08 4.52 Weighted-Average Exercise Price $ 18.89 $ 20.41 $ 22.19 $ 23.48 $ 24.03 $ 21.68 Schedule of Other Stock Option Plan Information 2015 2014 2013 Shares Granted 55,590 75,518 10,404 Weighted Average Grant Date Information: Fair Value of Options Granted $ 5.67 $ 5.80 $ 5.25 Fair Value Assumptions: Dividend Yield 3.90 % 3.97 % 4.20 % Expected Volatility 33.55 % 35.30 % 36.57 % Risk Free Interest Rate 1.57 % 2.19 % 1.31 % Expected Lives (in years) 7.66 6.85 6.71 Amount Expensed During the Year $ 308 $ 360 $ 372 Compensation Costs for Non-vested Awards Not Yet Recognized 500 478 420 Weighted Average Expected Vesting Period, In Years 2.12 1.68 1.45 Proceeds From Stock Options Exercised $ 917 $ 1,454 $ 1,254 Tax Benefits Related to Stock Options Exercised 59 25 23 Intrinsic Value of Stock Options Exercised 250 170 267 Employee Stock Ownership Plan Arrow maintains an employee stock ownership plan ( “ ESOP ” ). Substantially all employees of Arrow and its subsidiaries are eligible to participate upon satisfaction of applicable service requirements. The ESOP borrowed funds from one of Arrow ’ s subsidiary banks to purchase outstanding shares of Arrow ’ s common stock. The notes require annual payments of principal and interest through 2018. As the debt is repaid, shares are released from collateral based on the proportion of debt paid to total debt outstanding for the year and allocated to active employees. In addition, the Company makes additional cash contributions to the Plan each year. Schedule of ESOP Compensation Expense 2015 2014 2013 ESOP Compensation Expense $ 900 $ 800 $ 600 As the debt is repaid, shares are released from collateral based on the proportion of debt paid to total debt outstanding for the year and allocated to active employees. Shares pledged as collateral are reported as unallocated ESOP shares in stockholders ’ equity. As shares are released from collateral, Arrow reports compensation expense equal to the current average market price of the shares, and the shares become outstanding for earnings per share computations. The ESOP shares as of December 31, 2015 were as follows: Schedule of Shares in ESOP Plan ESOP Plan Shares: 2015 Allocated Shares 684,016 Shares Released for Allocation During 2015 17,645 Unallocated Shares 55,275 Total ESOP Shares 756,936 Market Value of Unallocated Shares $ 1,502

Retirement Benefit Plans

Retirement Benefit Plans	12 Months Ended
	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Pension and Other Postretirement Benefits Disclosure [Text Block]	RETIREMENT BENEFIT PLANS (Dollars in Thousands) Arrow sponsors qualified and nonqualified defined benefit pension plans and other postretirement benefit plans for its employees. Arrow maintains a non-contributory pension plan, which covers substantially all employees. Effective December 1, 2002, all active participants in the qualified defined benefit pension plan were given a one-time irrevocable election to continue participating in the traditional plan design, for which benefits were based on years of service and the participant ’ s final compensation (as defined), or to begin participating in the new cash balance plan design. All employees who participate in the plan after December 1, 2002 automatically participate in the cash balance plan design. The interest credits under the cash balance plan are based on the 30-year U.S. Treasury rate in effect for November of the prior year. The service credits under the cash balance plan are equal to 6.0% of eligible salaries for employees who become participants on or after January 1, 2003. For employees in the plan prior to January 1, 2003, the service credits are scaled based on the age of the participant, and range from 6.0% to 12.0%. The funding policy is to contribute up to the maximum amount that can be deducted for federal income tax purposes and to make all payments required under ERISA. Arrow also maintains a supplemental non-qualified unfunded retirement plan to provide eligible employees of Arrow and its subsidiaries with benefits in excess of qualified plan limits imposed by federal tax law. Arrow has multiple non-pension postretirement benefit plans. The health care, dental and life insurance plans are contributory, with participants ’ contributions adjusted annually. Arrow ’ s policy is to fund the cost of postretirement benefits based on the current cost of the underlying policies. However, the health care plan provision for automatic increases of Company contributions each year is based on the increase in inflation and is limited to a maximum of 5%. As of December 31, 2014, Arrow updated its mortality assumption to the RP-2014 Mortality Table for annuitants and non-annuitants with projected generational mortality improvements using Scale MP-2014. The revised assumption resulted in an increase in postretirement liabilities. The following tables set forth changes in the plans ’ benefit obligations (projected benefit obligation for pension benefits and accumulated benefit obligation for postretirement benefits) and changes in the plans ’ assets and the funded status of the pension plans and other postretirement benefit plan at December 31: Schedule of Defined Benefit Plan Disclosures Employees' Pension Plan Select Executive Retirement Plan Postretirement Benefit Plans Defined Benefit Plan Funded Status December 31, 2015 Fair Value of Plan Assets $ 47,234 $ — $ — Benefit Obligation 35,982 4,784 7,701 Funded Status of Plan $ 11,252 $ (4,784 ) $ (7,701 ) December 31, 2014 Fair Value of Plan Assets $ 45,704 $ — $ — Benefit Obligation 36,966 5,072 9,170 Funded Status of Plan $ 8,738 $ (5,072 ) $ (9,170 ) Change in Benefit Obligation Benefit Obligation, at January 1, 2015 $ 36,966 $ 5,072 $ 9,170 Service Cost 1,503 32 250 Interest Cost 1,545 211 394 Plan Participants' Contributions — — 481 Amendments 277 91 — Actuarial Gain (1,670 ) (152 ) (1,715 ) Benefits Paid (2,639 ) (470 ) (879 ) Benefit Obligation, at December 31, 2015 $ 35,982 $ 4,784 $ 7,701 Schedule of Defined Benefit Plan Disclosures Employees' Pension Plan Select Executive Retirement Plan Postretirement Benefit Plans Benefit Obligation, at January 1, 2014 $ 33,259 $ 4,459 $ 7,619 Service Cost 1,410 10 173 Interest Cost 1,621 206 374 Plan Participants' Contributions — — 383 Amendments — — 570 Actuarial Loss 2,909 870 884 Benefits Paid (2,233 ) (473 ) (833 ) Benefit Obligation, at December 31, 2014 $ 36,966 $ 5,072 $ 9,170 Change in Fair Value of Plan Assets Fair Value of Plan Assets, at January 1, 2015 $ 45,704 $ — $ — Actual Return on Plan Assets 1,169 — — Employer Contributions 3,000 470 398 Plan Participants' Contributions — — 481 Benefits Paid (2,639 ) (470 ) (879 ) Fair Value of Plan Assets, at December 31, 2015 $ 47,234 $ — $ — Change in Fair Value of Plan Assets, continued Fair Value of Plan Assets, at January 1, 2014 $ 44,653 $ — $ — Actual Return on Plan Assets 3,284 — — Employer Contributions — 473 450 Plan Participants' Contributions — — 383 Benefits Paid (2,233 ) (473 ) (833 ) Fair Value of Plan Assets, at December 31, 2014 $ 45,704 $ — $ — Accumulated Benefit Obligation at December 31, 2015 $ 35,582 $ 4,784 $ 7,701 Amounts Recognized in the Consolidated Balance Sheets December 31, 2015 Prepaid Pension Asset $ 11,252 $ — — Accrued Benefit Liability — (4,784 ) (7,701 ) Net Benefit Recognized $ 11,252 $ (4,784 ) $ (7,701 ) December 31, 2014 Prepaid Pension Asset $ 8,738 $ — — Accrued Benefit Liability — (5,072 ) (9,170 ) Net Benefit Recognized $ 8,738 $ (5,072 ) $ (9,170 ) Amounts Recognized in Other Comprehensive Income (Loss) For the Year Ended December 31, 2015 Net Unamortized Gain Arising During the Period $ 472 $ (152 ) $ (1,715 ) Net Prior Service Cost Arising During the Period 277 91 — Amortization of Net Loss (601 ) (131 ) (114 ) Amortization of Prior Service (Cost) Credit 83 (58 ) 31 Total Other Comprehensive (Loss) Income for Pension and Other Postretirement Benefit Plans $ 231 $ (250 ) $ (1,798 ) For the Year Ended December 31, 2014 Net Unamortized Loss Arising During the Period $ 2,855 $ 871 $ 884 Net Prior Service Cost Arising During the Period — — 570 Amortization of Net Loss (356 ) (93 ) (25 ) Amortization of Prior Service (Cost) Credit 45 (72 ) 114 Total Other Comprehensive (Loss) Income for Pension and Other Postretirement Benefit Plans $ 2,544 $ 706 $ 1,543 Schedule of Defined Benefit Plan Disclosures Employees' Pension Plan Select Executive Retirement Plan Postretirement Benefit Plans For the Year Ended December 31, 2013 Net Unamortized Loss Arising During the Period $ (8,438 ) $ (554 ) $ (1,648 ) Net Prior Service Cost Arising During the Period — — — Amortization of Net Loss (1,231 ) (140 ) (142 ) Amortization of Prior Service (Cost) Credit (37 ) (79 ) 114 Total Other Comprehensive (Loss) Income for Pension and Other Postretirement Benefit Plans $ (9,706 ) $ (773 ) $ (1,676 ) Accumulated Other Comprehensive Income December 31, 2015 Net Actuarial Loss $ 10,727 $ 2,169 $ 90 Prior Service (Credit) Cost 150 603 410 Total Accumulated Other Comprehensive Income, Before Tax $ 10,877 $ 2,772 $ 500 December 31, 2014 Net Actuarial Loss $ 10,856 $ 2,452 $ 1,919 Prior Service (Credit) Cost (210 ) 570 379 Total Accumulated Other Comprehensive Income, Before Tax $ 10,646 $ 3,022 $ 2,298 Amounts that will be Amortized from Accumulated Other Comprehensive Income the Next Year Net Actuarial Loss $ 559 $ 112 $ — Prior Service (Credit) Cost $ (57 ) $ 57 $ (12 ) Net Periodic Benefit Cost For the Year Ended December 31, 2015 Service Cost $ 1,503 $ 32 $ 250 Interest Cost 1,545 211 394 Expected Return on Plan Assets (3,311 ) — — Amortization of Prior Service (Credit) Cost (83 ) 58 (31 ) Amortization of Net Loss 601 131 114 Net Periodic Benefit Cost $ 255 $ 432 $ 727 For the Year Ended December 31, 2014 Service Cost $ 1,410 $ 10 $ 173 Interest Cost 1,621 206 374 Expected Return on Plan Assets (3,230 ) — — Amortization of Prior Service (Credit) Cost (45 ) 72 (114 ) Amortization of Net Loss 356 93 25 Net Periodic Benefit Cost $ 112 $ 381 $ 458 For the Year Ended December 31, 2013 Service Cost $ 1,506 $ — $ 211 Interest Cost 1,261 163 308 Expected Return on Plan Assets (2,889 ) — — Amortization of Prior Service (Credit) Cost 37 79 (114 ) Amortization of Net Loss 1,232 139 142 Net Periodic Benefit Cost $ 1,147 $ 381 $ 547 Schedule of Defined Benefit Plan Disclosures Employees' Pension Plan Select Executive Retirement Plan Postretirement Benefit Plans Weighted-Average Assumptions Used in Calculating Benefit Obligation December 31, 2015 Discount Rate 4.73 % 4.61 % 4.69 % Rate of Compensation Increase 3.50 % 3.00 % 3.50 % Interest Rate Credit for Determining Projected Cash Balance Account 3.03 % Interest Rate to Annuitize Cash Balance Account 5.00 % Interest Rate to Convert Annuities to Actuarially Equivalent Lump Sum Amounts 5.00 % 5.00 % December 31, 2014 Discount Rate 4.31 % 4.26 % 4.31 % Rate of Compensation Increase 3.50 % 3.50 % 3.50 % Interest Rate Credit for Determining Projected Cash Balance Account 3.04 % Interest Rate to Annuitize Cash Balance Account 4.75 % Interest Rate to Convert Annuities to Actuarially Equivalent Lump Sum Amounts 4.75 % 4.75 % Weighted-Average Assumptions Used in Calculating Net Periodic Benefit Cost December 31, 2015 Discount Rate 4.31 % 4.26 % 4.31 % Expected Long-Term Return on Plan Assets 7.50 % Rate of Compensation Increase 3.50 % 3.50 % 3.50 % Interest Rate Credit for Determining Projected Cash Balance Account 3.04 % Interest Rate to Annuitize Cash Balance Account 4.75 % Interest Rate to Convert Annuities to Actuarially Equivalent Lump Sum Amounts 4.75 % 4.75 % December 31, 2014 Discount Rate 5.10 % 4.85 % 5.10 % Expected Long-Term Return on Plan Assets 7.50 % Rate of Compensation Increase 3.50 % 3.50 % 3.50 % Interest Rate Credit for Determining Projected Cash Balance Account 4.00 % Interest Rate to Annuitize Cash Balance Account 5.25 % Interest Rate to Convert Annuities to Actuarially Equivalent Lump Sum Amounts 5.25 % 5.25 % Schedule of Defined Benefit Plan Disclosures Employees' Pension Plan Select Executive Retirement Plan Postretirement Benefit Plans December 31, 2013 Discount Rate 3.55 % 3.15 % 3.55 % Expected Long-Term Return on Plan Assets 7.50 % Rate of Compensation Increase 3.50 % 3.50 % 3.50 % Interest Rate Credit for Determining Projected Cash Balance Account 3.00 % Interest Rate to Annuitize Cash Balance Account 4.50 % Interest Rate to Convert Annuities to Actuarially Equivalent Lump Sum Amounts 4.50 % 4.50 % Schedule of Defined Benefit Plan Disclosures Information about Defined Benefit Plan Assets - Employees' Pension Plan Fair Value Measurements Using: Asset Category Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Percent of Total Target Allocation Minimum Target Allocation Maximum December 31, 2015 Cash $ 44 $ — $ — $ 44 0.1 % — % 15.0 % Interest-Bearing Money Market Fund 2,471 — — 2,471 5.2 % — % 15.0 % Arrow Common Stock 1 4,554 — — 4,554 9.6 % — % 10.0 % North Country Funds - Equity 2 19,625 — — 19,625 41.6 % Other Mutual Funds - Equity 13,194 — — 13,194 27.9 % Total Equity Funds 32,819 — — 32,819 69.5 % 55.0 % 85.0 % North Country Funds - Fixed income 2 7,346 — — 7,346 15.6 % Other Mutual Funds - Fixed Income — — — — — % Total Fixed Income Funds 7,346 — — 7,346 15.6 % 15.0 % 30.0 % Total $ 47,234 $ — $ — $ 47,234 100.0 % December 31, 2014 Cash $ 20 $ — $ — $ 20 — % — % 15.0 % Interest-Bearing Money Market Fund 4,322 — — 4,322 9.5 % — % 15.0 % Arrow Common Stock 1 4,551 — — 4,551 10.0 % — % 10.0 % North Country Funds - Equity 2 18,975 — — 18,975 41.4 % Other Mutual Funds - Equity 10,954 — — 10,954 24.0 % Total Equity Funds 29,929 — — 29,929 65.4 % 66.0 % 85.0 % North Country Funds - Fixed income 2 5,436 — — 5,436 11.9 % Other Mutual Funds - Fixed Income 1,446 — — 1,446 3.2 % Total Fixed Income Funds 6,882 — — 6,882 15.1 % 15.0 % 30.0 % Total $ 45,704 $ — $ — $ 45,704 100.0 % 1 Acquisition of Arrow Financial Corporation common stock was under 10% of the total fair value of the employee's pension plan assets at the time of acquisition. 2 The North Country Funds - Equity and the North Country Funds - Fixed Income are publicly traded mutual funds advised by Arrow's subsidiary, North Country Investment Advisers, Inc. Schedule of Defined Benefit Plan Disclosures Employees' Pension Plan Select Executive Retirement Plan Postretirement Benefit Plans Expected Future Benefit Payments 2016 $ 2,264 $ 443 $ 539 2017 2,254 433 523 2018 2,195 422 545 2019 2,353 410 568 2020 2,566 397 566 2021 - 2025 13,477 1,814 2,944 Estimated Contributions During 2016 $ — $ 443 $ 539 Assumed Health Care Cost Trend Rates December 31, 2015 Health Care Cost Trend Rate Assumed for Next Year 7.75 % Rate to which the Cost Trend Rate is Assumed to Decline (the Ultimate Trend Rate) 3.89 % Year that the Rate Reaches the Ultimate Trend Rate 2075 December 31, 2014 Health Care Cost Trend Rate Assumed for Next Year 8.00 % Rate to which the Cost Trend Rate is Assumed to Decline (the Ultimate Trend Rate) 3.89 % Year that the Rate Reaches the Ultimate Trend Rate 2075 Effect of a One-Percentage Point Change in Assumed Health Care Cost Trend Rates Effect of a One Percentage Point Increase on Service and Interest Cost Components $ 73 Effect of a One Percentage Point Decrease on Service and Interest Cost Components (61 ) Effect of a One Percentage Point Increase on Accumulated Postretirement Benefit Obligation 541 Effect of a One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation (466 ) Fair Value of Plan Assets (Defined Benefit Plan): For information on fair value measurements, including descriptions of level 1, 2 and 3 of the fair value hierarchy and the valuation methods employed by Arrow, see Note 2 - “ Summary of Significant Accounting Policies ” and Note 17 - “ Fair Values. ” The fair value of level 1 financial instruments in the table above are based on unadjusted, quoted market prices from exchanges in active markets. In accordance with ERISA guidelines, the Board authorized the purchase of Arrow common stock up to 10% of the fair market value of the plan's assets at the time of acquisition. Pension Plan Investment Policies and Strategies : The Company maintains a non-contributory pension benefit plan covering substantially all employees for the purpose of rewarding long and loyal service to the Company. The pension assets are held in trust and are invested in a prudent manner for the exclusive purpose of providing benefits to participants. The investment objective is to achieve an inflation-protected rate of return that meets the actuarial assumption which is used for funding purposes. The investment strategy attempts to maximize the investment return on assets at a level of risk deemed appropriate by the Company while complying with ERISA and any applicable regulations and laws. The investment strategy utilizes asset allocation as a principal determinant for establishing the risk/reward profile of the assets. Asset allocation ranges are established, periodically reviewed, and adjusted as funding levels, and participant benefit characteristics change. Active and passive investment management is employed to help enhance the risk/return profile of the assets. The Plan ’ s assets are invested in a diversified portfolio of equity securities comprised of companies with small, mid, and large capitalizations. Both domestic and international equities are allowed to provide further diversification and opportunity for return in potentially higher growth economies with lower correlation of returns. Growth and value styles of investment are employed to increase the diversification and offer varying opportunities for appreciation. The fixed income portion of the plan may be invested in U.S. dollar denominated debt securities that shall be rated within the top four ratings categories by nationally recognized ratings agencies. The fixed income portion will be invested without regard to industry or sector based on analysis of each target security ’ s structural and repayment features, current pricing and trading opportunities as well as credit quality of the issuer. Individual bonds with ratings that fall below the Plan ’ s rating requirements will be sold only when it is in the best interests of the Plan. Hybrid investments, such as convertible bonds, may be used to provide growth characteristics while offering some protection to declining equity markets by having a fixed income component. Alternative investments such as Treasury Inflation Protected Securities, commodities, and REITs may be used to further enhance diversification while offering opportunities for return. In accordance with ERISA guidelines, common stock of the Company may be purchased up to 10% of the fair market value of the Plan ’ s assets at the time of acquisition. Derivative investments are prohibited in the plan. The return on assets assumption was developed through review of historical market returns, historical asset class volatility and correlations, current market conditions, the Plan ’ s past experience, and expectations on potential future market returns. The assumption represents a long-term average view of the performance of the assets in the Plan, a return that may or may not be achieved during any one calendar year. The assumption is based on the return of the Plan using the historical 15 year return adjusted for the potential for lower than historical returns due to low interest rates. Cash Flows - Although we were not required to make any contribution to our qualified pension plan in 2015 , we elected to contribute $3 million into the plan during the year. Arrow makes contributions for its postretirement benefits in an amount equal to actual expenses for the year.

Other Expenses

Other Expenses	12 Months Ended
	Dec. 31, 2015
Other Income and Expenses [Abstract]
Schedule of Other Operating Cost and Expense, by Component [Table Text Block]	OTHER EXPENSES (Dollars In Thousands) Other operating expenses included in the consolidated statements of income are as follows: 2015 2014 2013 Computer Services $ 3,909 $ 3,659 $ 3,261 Legal and Other Professional Fees 2,188 1,836 1,823 Postage and Courier 1,050 1,084 1,046 Advertising and Promotion 965 886 879 Telephone and Communications 832 746 804 Stationery and Printing 796 851 905 Intangible Asset Amortization 327 387 452 All Other 3,846 3,531 3,486 Total Other Operating Expense $ 13,913 $ 12,980 $ 12,656

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	INCOME TAXES (Dollars In Thousands) The provision for income taxes is summarized below: Current Tax Expense: 2015 2014 2013 Federal $ 8,570 $ 9,270 $ 7,933 State 860 1,203 852 Total Current Tax Expense 9,430 10,473 8,785 Deferred Tax Expense (Benefit): Federal 1,004 (315 ) 172 State 176 16 122 Total Deferred Tax Expense (Benefit) 1,180 (299 ) 294 Total Provision for Income Taxes $ 10,610 $ 10,174 $ 9,079 The provisions for income taxes differed from the amounts computed by applying the U.S. Federal Income Tax Rate of 35% for 2015 , 2014 and 2013 to pre-tax income as a result of the following: 2015 2014 2013 Computed Tax Expense at Statutory Rate $ 12,345 $ 11,737 $ 10,806 Increase (Decrease) in Income Taxes Resulting From: Tax-Exempt Income (2,292 ) (2,215 ) (2,238 ) Nondeductible Interest Expense 36 51 80 State Taxes, Net of Federal Income Tax Benefit 805 791 633 Other Items, Net (284 ) (190 ) (202 ) Total Provision for Income Taxes $ 10,610 $ 10,174 $ 9,079 The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities at December 31, 2015 and 2014 are presented below: 2015 2014 Deferred Tax Assets: Allowance for Loan Losses $ 6,453 $ 6,113 Pension and Deferred Compensation Plans 3,973 3,885 Pension Liability Included in Accumulated Other Comprehensive Income 5,550 6,263 Other 557 614 Total Gross Deferred Tax Assets 16,533 16,875 Valuation Allowance for Deferred Tax Assets — — Total Gross Deferred Tax Assets, Net of Valuation Allowance $ 16,533 $ 16,875 Deferred Tax Liabilities: Pension Plans $ 8,680 $ 7,604 Depreciation 1,383 1,222 Deferred Income 4,167 3,927 Net Unrealized Gains on Securities Available-for-Sale Included in Accumulated Other Comprehensive Income 405 1,638 Goodwill 5,316 5,242 Total Gross Deferred Tax Liabilities $ 19,951 $ 19,633 Management believes that the realization of the recognized net deferred tax assets at December 31, 2015 and 2014 is more likely than not, based on existing loss carryback ability, available tax planning strategies and expectations as to future taxable income. Interest and penalties are recorded as a component of the provision for income taxes, if any. There are no current examinations of our Federal or state income tax returns, nor have we been notified of any up-coming examinations. Tax years 2012 through 2015 are subject to Federal and New York State examination.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	EARNINGS PER SHARE (In Thousands, Except Per Share Amounts) The following table presents a reconciliation of the numerator and denominator used in the calculation of basic and diluted earnings per common share ("EPS") for each of the years in the three-year period ended December 31, 2015 . All share and per share amounts have been adjusted for the 2015 2% stock dividend. Earnings Per Share Year-to-Date Period Ended: 12/31/2015 12/31/2014 12/31/2013 Earnings Per Share - Basic: Net Income $ 24,662 $ 23,360 $ 21,795 Weighted Average Shares - Basic 12,894 12,856 12,793 Earnings Per Share - Basic $ 1.91 $ 1.82 $ 1.70 Earnings Per Share - Diluted: Net Income $ 24,662 $ 23,360 $ 21,795 Weighted Average Shares - Basic 12,894 12,856 12,793 Dilutive Average Shares Attributable to Stock Options 48 30 32 Weighted Average Shares - Diluted 12,942 12,886 12,825 Earnings Per Share - Diluted $ 1.91 $ 1.81 $ 1.70 Antidilutive Shares Excluded from the Calculation of Earnings Per Share — — 47

Fair Values

Fair Values	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	FAIR VALUES (Dollars In Thousands) FASB ASC Subtopic 820-10 defines fair value, establishes a framework for measuring fair value in generally accepted accounting principles (GAAP) and requires certain disclosures about fair value measurements. We do not have any nonfinancial assets or liabilities measured at fair value on a recurring basis. The only assets or liabilities that Arrow measured at fair value on a recurring basis at December 31, 2015 and 2014 were securities available-for-sale. Arrow held no securities or liabilities for trading on such date. For information on fair value measurements, including descriptions of level 1, 2 and 3 of the fair value hierarchy and the valuation methods employed by Arrow, see Note 2 - “Summary of Significant Accounting Policies.” 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) Total Gains (Losses) December 31, 2015 Securities Available-for Sale: U.S. Agency Obligations $ 155,782 $ — $ 155,782 $ — State and Municipal Obligations 52,408 — 52,408 — Mortgage-Backed Securities - Residential 178,588 — 178,588 — Corporate and Other Debt Securities 14,299 — 14,299 — Mutual Funds and Equity Securities 1,232 — 1,232 — Total Securities Available-for-Sale $ 402,309 $ — $ 402,309 $ — December 31, 2014 Securities Available-for Sale: U.S. Agency Obligations $ 137,603 $ — $ 137,603 $ — State and Municipal Obligations 81,730 — 81,730 — Mortgage-Backed Securities - Residential 128,827 — 128,827 — Corporate and Other Debt Securities 16,725 — 16,725 — Mutual Funds and Equity Securities 1,254 — 1,254 — Total Securities Available-for Sale $ 366,139 $ — $ 366,139 $ — Fair Value of Assets and Liabilities Measured on a Nonrecurring Basis: December 31, 2015 Collateral Dependent Impaired Loans $ — $ — $ — $ — $ — Other Real Estate Owned and Repossessed Assets, Net $ 2,018 $ — $ — $ 2,018 $ (687 ) December 31, 2014 Collateral Dependent Impaired Loans $ 574 $ — $ — $ 574 $ (109 ) Other Real Estate Owned and Repossessed Assets, Net $ 393 $ — $ — $ 393 $ (15 ) We determine the fair value of financial instruments under the following hierarchy: • Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; • Level 2 - Quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs that are observable, either directly or indirectly, for substantially the full term of the asset or liability; • Level 3 - Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity). Fair Value Methodology for Assets and Liabilities Measured on a Recurring Basis The fair value of level 1 securities available-for-sale are based on unadjusted, quoted market prices from exchanges in active markets. The fair value of level 2 securities available-for-sale are based on an independent bond and equity pricing service for identical assets or significantly similar securities and an independent equity pricing service for equity securities not actively traded. The pricing services use a variety of techniques to arrive at fair value including market maker bids, quotes and pricing models. Inputs to the pricing models include recent trades, benchmark interest rates, spreads and actual and projected cash flows. Fair Value Methodology for Assets and Liabilities Measured on a Nonrecurring Basis The fair value of collateral dependent impaired loans and other real estate owned was based on third-party appraisals. The appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. Other assets which might have been included in this table include mortgage servicing rights, goodwill and other intangible assets. Arrow evaluates each of these assets for impairment on an annual basis, with no impairment recognized for these assets at December 31, 2015 and December 31, 2014 . 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, 2015 Cash and Cash Equivalents $ 51,068 $ 51,068 $ 51,068 $ — $ — Securities Available-for-Sale 402,309 402,309 — 402,309 — Securities Held-to-Maturity 320,611 325,930 — 325,930 — Federal Home Loan Bank and Federal Reserve Bank Stock 8,839 8,839 8,839 — — Net Loans 1,557,914 1,557,511 — — 1,557,511 Accrued Interest Receivable 6,360 6,360 6,360 — — Deposits 2,030,423 2,024,224 1,840,606 183,618 — Federal Funds Purchased and Securities Sold Under Agreements to Repurchase 23,173 19,421 19,421 — — Federal Home Loan Bank Term Advances 137,000 137,063 82,000 55,063 — Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts 20,000 20,000 — 20,000 — Accrued Interest Payable 231 231 231 — — December 31, 2014 Cash and Cash Equivalents $ 46,295 $ 46,295 $ 46,295 $ — $ — Securities Available-for-Sale 366,139 366,139 — 366,139 — Securities Held-to-Maturity 302,024 308,566 — 308,566 — Federal Home Loan Bank and Federal Reserve Bank Stock 4,851 4,851 4,851 — — Net Loans 1,397,698 1,405,454 — — 1,405,454 Accrued Interest Receivable 5,834 5,834 5,834 — — Deposits 1,902,948 1,899,682 1,697,105 202,577 — Federal Funds Purchased and Securities Sold Under Agreements to Repurchase 19,421 19,421 19,421 — — Federal Home Loan Bank Term Advances 51,000 51,258 41,000 10,258 — Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts 20,000 20,000 — 20,000 — Accrued Interest Payable 274 274 274 — — Fair Value Methodology for Financial Instruments Not Measured on a Recurring or Nonrecurring Basis Securities held-to-maturity are fair valued utilizing an independent bond pricing service for identical assets or significantly similar securities. The pricing service uses a variety of techniques to arrive at fair value including market maker bids, quotes and pricing models. Inputs to the pricing models include recent trades, benchmark interest rates, spreads and actual and projected cash flows. Fair values for loans are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as commercial, commercial real estate, residential mortgage, indirect and other consumer loans. Each loan category is further segmented into fixed and adjustable interest rate terms and by performing and nonperforming categories. The fair value methodology does not use an exit price methodology. The fair value of performing loans is calculated by discounting scheduled cash flows through the estimated maturity using estimated market discount rates that reflect the credit and interest rate risk inherent in the loan. The estimate of maturity is based on historical experience with repayments for each loan classification, modified, as required, by an estimate of the effect of current economic and lending conditions. Fair value for nonperforming loans is generally based on recent external appraisals. If appraisals are not available, estimated cash flows are discounted using a rate commensurate with the risk associated with the estimated cash flows. Assumptions regarding credit risk, cash flows and discount rates are judgmentally determined using available market information and specific borrower information. The fair value of time deposits is based on the discounted value of contractual cash flows, except that the fair value is limited to the extent that the customer could redeem the certificate after imposition of a premature withdrawal penalty. The discount rates are estimated using the FHLBNY yield curve, which is considered representative of Arrow ’ s time deposit rates. The fair value of all other deposits is equal to the carrying value. The fair value of FHLBNY advances is estimated based on the discounted value of contractual cash flows. The discount rate is estimated using current rates on FHLBNY advances with similar maturities and call features. Based on Arrow ’ s capital adequacy, the book value of the outstanding trust preferred securities (Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts) are considered to approximate fair value since the interest rates are variable (indexed to LIBOR) and Arrow is well-capitalized.

Leases

Leases	12 Months Ended
	Dec. 31, 2015
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Leases of Lessee Disclosure [Text Block]	LEASES (Dollars In Thousands) At December 31, 2015 , Arrow was obligated under a number of noncancellable operating leases for buildings and equipment. Certain of these leases provide for escalation clauses and contain renewal options calling for increased rentals if the lease is renewed. Net rental expense for the years ended December 31, 2015 , 2014 and 2013 was as follows: 2015 2014 2013 Net Rental Expense $ 862 $ 784 $ 671 Future minimum lease payments on operating leases at December 31, 2015 were as follows: Operating Leases 2016 $ 704 2017 517 2018 454 2019 333 2020 219 Later Years 468 Total Minimum Lease Payments $ 2,695 Arrow leases five of its branch offices, at market rates, from Stewart ’ s Shops Corp. Mr. Gary C. Dake, President of Stewart ’ s Shops Corp., serves on both the boards of Arrow and Saratoga National Bank and Trust Company.

Regulatory Matters

Regulatory Matters	12 Months Ended
	Dec. 31, 2015
Banking and Thrift [Abstract]
Regulatory Capital Requirements under Banking Regulations [Text Block]	REGULATORY MATTERS (Dollars in Thousands) In the normal course of business, Arrow and its subsidiaries operate under certain regulatory restrictions, such as the extent and structure of covered inter-company borrowings and maintenance of reserve requirement balances. The principal source of the funds for the payment of stockholder dividends by Arrow has been from dividends declared and paid to Arrow by its bank subsidiaries. As of December 31, 2015 , the maximum amount that could have been paid by subsidiary banks to Arrow, without prior regulatory approval, was approximately $ 31.0 . Under current Federal Reserve regulations, Arrow is prohibited from borrowing from the subsidiary banks unless such borrowings are secured by specific obligations. Additionally, the maximum of any such borrowing is limited to 10% of an affiliate ’ s capital and surplus. Arrow and its subsidiary banks are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory--and possibly additional discretionary--actions by regulators that, if undertaken, could have a direct material effect on an institution ’ s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, Arrow and its subsidiary banks must meet specific capital guidelines that involve quantitative measures of assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. Capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. Quantitative measures established by regulation to ensure capital adequacy require Arrow and its subsidiary banks to maintain minimum capital amounts and ratios (set forth in the table below) of total and Tier I capital (as defined in the regulations) to risk-weighted assets (as defined), and of Tier I capital (as defined) to average assets (as defined). Management believes, as of December 31, 2015 and 2014 , that Arrow and both subsidiary banks meet all capital adequacy requirements to which they are subject. As of December 31, 2015 , Arrow and both subsidiary banks qualified as well-capitalized under the regulatory framework for prompt corrective action. To be categorized as “ well-capitalized, ” Arrow and its subsidiary banks must maintain minimum total risk-based, Tier I risk-based, and Tier I leverage ratios as set forth in the table below. There are no conditions or events that management believes have changed Arrow ’ s or its subsidiary banks ’ categories. 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, 2015 and 2014 : Actual Minimum Amounts For Capital Adequacy Purposes Minimum Amounts To Be Well-Capitalized Amount Ratio Amount Ratio Amount Ratio As of December 31, 2015: Total Capital (to Risk Weighted Assets): Arrow $ 239,988 15.1 % $ 127,146 8.0 % $ 158,932 10.0 % Glens Falls National 193,302 15.0 % 103,094 8.0 % 128,868 10.0 % Saratoga National 37,658 12.6 % 23,910 8.0 % 29,887 10.0 % Tier I Capital (to Risk Weighted Assets): Arrow 223,899 14.1 % 95,276 6.0 % 127,035 8.0 % Glens Falls National 180,280 14.0 % 77,263 6.0 % 103,017 8.0 % Saratoga National 34,642 11.6 % 17,918 6.0 % 23,891 8.0 % Tier I Capital (to Average Assets): Arrow 223,899 9.3 % 96,301 4.0 % 120,376 5.0 % Glens Falls National 180,280 8.9 % 81,025 4.0 % 101,281 5.0 % Saratoga National 34,642 8.9 % 15,569 4.0 % 19,462 5.0 % Common Equity Tier 1 Capital (to Risk Weighted Assets): Arrow 203,848 12.8 % 71,665 4.5 % 103,517 6.5 % Glens Falls National 180,229 14.0 % 57,931 4.5 % 83,678 6.5 % Saratoga National 34,642 11.6 % 13,439 4.5 % 19,411 6.5 % 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 %

Parent Only Financial Informati

Parent Only Financial Information	12 Months Ended
	Dec. 31, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Financial Information of Parent Company Only Disclosure [Text Block]	PARENT ONLY FINANCIAL INFORMATION (Dollars In Thousands) Condensed financial information for Arrow Financial Corporation is as follows: BALANCE SHEETS December 31, ASSETS 2015 2014 Interest-Bearing Deposits with Subsidiary Banks $ 3,441 $ 3,013 Available-for-Sale Securities 1,232 1,254 Held-to-Maturity Securities 1,000 1,000 Investment in Subsidiaries at Equity 225,934 214,813 Other Assets 7,390 6,538 Total Assets $ 238,997 $ 226,618 LIABILITIES Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts $ 20,000 $ 20,000 Other Liabilities 5,026 5,692 Total Liabilities 25,026 25,692 STOCKHOLDERS ’ EQUITY Total Stockholders ’ Equity 213,971 200,926 Total Liabilities and Stockholders ’ Equity $ 238,997 $ 226,618 STATEMENTS OF INCOME Years Ended December 31, Income: 2015 2014 2013 Dividends from Bank Subsidiaries $ 13,400 $ 13,300 $ 12,900 Interest and Dividends on Investments 118 116 116 Other Income (Including Management Fees) 847 578 549 Total Income 14,365 13,994 13,565 Expense: Interest Expense 619 620 640 Salaries and Employee Benefits 80 77 59 Other Expense 885 754 860 Total Expense 1,584 1,451 1,559 Income Before Income Tax Benefit and Equity in Undistributed Net Income of Subsidiaries 12,781 12,543 12,006 Income Tax Benefit 372 473 634 Equity in Undistributed Net Income of Subsidiaries 11,509 10,344 9,155 Net Income $ 24,662 $ 23,360 $ 21,795 The Statement of Changes in Stockholders ’ Equity is not reported because it is identical to the Consolidated Statement of Changes in Stockholders ’ Equity. STATEMENTS OF CASH FLOWS Years Ended December 31, 2015 2014 2013 Cash Flows from Operating Activities: Net Income $ 24,662 $ 23,360 $ 21,795 Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities: Undistributed Net Income of Subsidiaries (11,509 ) (10,344 ) (9,155 ) Shares Issued Under the Directors ’ Stock Plan 227 197 198 Stock-Based Compensation Expense 308 360 372 Changes in Other Assets and Other Liabilities (1,419 ) (1,014 ) (990 ) Net Cash Provided by Operating Activities 12,269 12,559 12,220 Cash Flows from Investing Activities: Proceeds from the Sale of Securities Available-for-Sale 47 45 45 Purchases of Securities Available-for-Sale (47 ) (45 ) (45 ) Net Cash (Used in) Provided by Investing Activities — — — Cash Flows from Financing Activities: Stock Options Exercised 918 1,454 1,254 Shares Issued Under the Employee Stock Purchase Plan 494 488 477 Shares Issued for Dividend Reinvestment Plans 886 — 1,280 Tax Benefit for Exercises of Stock Options 59 25 23 Purchase of Treasury Stock (1,498 ) (2,455 ) (1,709 ) Cash Dividends Paid (12,700 ) (12,407 ) (12,109 ) Net Cash Used in Financing Activities (11,841 ) (12,895 ) (10,784 ) Net (Decrease) Increase in Cash and Cash Equivalents 428 (336 ) 1,436 Cash and Cash Equivalents at Beginning of the Year 3,013 3,349 1,913 Cash and Cash Equivalents at End of the Year $ 3,441 $ 3,013 $ 3,349 Supplemental Disclosures to Statements of Cash Flow Information: Interest Paid $ 619 $ 620 $ 640 Non-cash Investing and Financing Activities: Shares Issued for Acquisition of Subsidiary — 91 233

Summary of Significant Accoun29

Summary of Significant Accounting Policies Significant Accounting (Policies)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Principles of Consolidation [Text Block]	Principles of Consolidation - The financial statements of Arrow and its wholly owned subsidiaries are consolidated and all material inter-company transactions have been eliminated. In the “ Parent Company Only ” financial statements in Note 20, the investment in wholly owned subsidiaries is carried under the equity method of accounting. When necessary, prior years ’ consolidated financial statements have been reclassified to conform to the current-year financial statement presentation. The Company determines whether it has a controlling financial interest in an entity by first evaluating whether the entity is a voting interest entity or a variable interest entity under GAAP. Voting interest entities are entities in which the total equity investment at risk is sufficient to enable the entity to finance itself independently and provides the equity holders with the obligation to absorb losses, the right to receive residual returns and the right to make decisions about the entity’s activities. The Company consolidates voting interest entities in which it has all, or at least a majority of, the voting interest. As defined in applicable accounting standards, variable interest entities (VIE) are entities that lack one or more of the characteristics of a voting interest entity. A controlling financial interest in a VIE is present when the Company has both the power and ability to direct the activities of the VIE that most significantly impact the VIE's economic performance and an obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. The Company’s wholly owned subsidiaries Arrow Capital Statutory Trust II and Arrow Capital Statutory Trust III are VIEs for which the Company is not the primary beneficiary. Accordingly, the accounts of these entities are not included in the Company’s consolidated financial statements.
Segment Reporting [Policy Text Block]	Segment Reporting - Arrow operations are primarily in the community banking industry, which constitutes Arrow ’ s only segment for financial reporting purposes. Arrow provides other services, such as trust administration, retirement plan administration, advice to our proprietary mutual funds and insurance products, but these services do not rise to the quantitative thresholds for separate disclosure. Arrow operates primarily in the northeastern region of New York State in Warren, Washington, Saratoga, Essex, Clinton and Albany counties and surrounding areas.
Cash and Cash Equivalents [Policy Text Block]	Cash and Cash Equivalents - Cash and cash equivalents include the following items: cash at branches, due from bank balances, cash items in the process of collection, interest-bearing bank balances and federal funds sold.
Securities [Policy Text Block]	Securities - Management determines the appropriate classification of securities at the time of purchase. Securities reported as held-to-maturity are those debt securities which Arrow has both the positive intent and ability to hold to maturity and are stated at amortized cost. Securities available-for-sale are reported at fair value, with unrealized gains and losses reported in accumulated other comprehensive income or loss, net of taxes. Realized gains and losses are based upon the amortized cost of the specific security sold. A decline in the fair value of any available-for-sale or held-to-maturity security below cost that is deemed to be other-than-temporary results in an impairment to reduce the carrying amount to fair value. To determine whether an impairment is other-than-temporary, we consider all available information relevant to the collectibility of the security, including past events, current conditions, and reasonable and supportable forecasts when developing an estimate of cash flows expected to be collected. Evidence considered in this assessment includes the reasons for impairment, the severity and duration of the impairment, changes in value subsequent to year-end, forecasted performance of the investee, and the general market condition in the geographic area or industry the investee operates in. When an other-than-temporary impairment has occurred on a debt security, the amount of the other-than-temporary impairment recognized in earnings depends on whether we intend to sell the debt security or more likely than not will be required to sell the debt security before recovery of its amortized cost basis less any current-period credit loss. If we intend to sell the debt security or it is more likely than not that we will be required to sell the debt security before recovery of its amortized cost basis less any current-period credit loss, the other-than-temporary impairment is recognized in earnings equal to the entire difference between the investment ’ s amortized cost basis and its fair value at the balance sheet date. If we do not intend to sell the debt security and it is not more likely than not that we will be required to sell the debt security before recovery of its amortized cost basis, the other-than-temporary impairment is separated into the amount representing the credit loss and the amount related to all other factors. The amount of the total other-than-temporary impairment related to the credit loss is recognized in earnings. The amount of the total other-than-temporary impairment related to other factors is recognized in other comprehensive income, net of applicable income taxes.
Loans and Allowance for Loan Losses [Policy Text Block]	Loans and Allowance for Loan Losses - Interest income on loans is accrued and credited to income based upon the principal amount outstanding. Loan fees and costs directly associated with loan originations are deferred and amortized/accreted as an adjustment to yield over the lives of the loans originated. From time-to-time, Arrow has sold (most with servicing retained) residential real estate loans at or shortly after origination. Any gain or loss on the sale of loans, along with the value of the servicing right, is recognized at the time of sale as the difference between the recorded basis in the loan and net proceeds from the sale. Loans held for sale are recorded at the lower of cost or fair value on an aggregate basis. Loans are placed on nonaccrual status either due to the delinquency status of principal and/or interest or a judgment by management that the full repayment of principal and interest is unlikely. Unless already placed on nonaccrual status, loans secured by home equity lines of credit are put on nonaccrual status when 120 days past due; residential real estate loans when 150 days past due; commercial and commercial real estate loans are evaluated on a loan-by-loan basis and are placed on nonaccrual status when 90 days past due if the full collection of principal and interest is uncertain. The balance of any accrued interest deemed uncollectible at the date the loan is placed on nonaccrual status is reversed, generally against interest income. A loan is returned to accrual status at the later of the date when the past due status of the loan falls below the threshold for nonaccrual status or management deems that it is likely that the borrower will repay all interest and principal. For payments received while the loan is on nonaccrual status, we may recognize interest income on a cash basis if the repayment of the remaining principal and accrued interest is deemed likely. The allowance for loan losses is maintained by charges to operations based upon our best estimate of the probable amount of loans that we will be unable to collect based on current information and events. Provisions to the allowance for loan losses are offset by actual loan charge-offs (net of any recoveries). We evaluate the loan portfolio for potential charge-offs on a monthly basis. In general, automobile and other consumer loans are charged-off when 120 days delinquent. Residential real estate loans are charged-off when a loss becomes known or based on a new appraisal at the earlier of 180 days past due or repossession. Commercial and commercial real estate loans loans are evaluated early in their delinquency status and are charged-off when management concludes that not all principal will be repaid from on-going cash flows or liquidation of collateral. An evaluation of estimated proceeds from the liquidation of the loan ’ s collateral is compared to the loan carrying amount and a charge to the allowance for loan losses is taken for any deficiency. While management uses available information to recognize losses on loans, future additions to the allowance may be necessary based on changes in economic conditions in Arrow's market area. In addition, various Federal regulatory agencies, as an integral part of their examination process, review Arrow's allowance for loan losses. Such agencies may require Arrow to recognize additions to the allowance in future periods, based on their judgments about information available to them at the time of their examination, which may not be currently available to management. We consider nonaccrual loans over $250 thousand and all troubled debt restructured loans to be impaired loans and we evaluate these loans individually to determine the amount of impairment, if any. The amount of impairment, if any, related to individual impaired loans is measured based on either the present value of expected future cash flows discounted at the loan's effective interest rate, the loan's observable market price or the fair value of the collateral if the loan is collateral dependent. Arrow determines impairment for collateral dependent loans based on the fair value of the collateral less estimated costs to sell. Any excess of the recorded investment in the collateral dependent impaired loan over the estimated collateral value, less costs to sell, is typically charged off. For impaired loans which are not collateral dependent, impairment is measured by comparing the recorded investment in the loan to the present value of the expected cash flows, discounted at the loan ’ s effective interest rate. If this amount is less than the recorded investment in the loan, an impairment reserve is recognized as part of the allowance for loan losses, or based upon the judgment of management all or a portion of the excess of the recorded investment in the loan over the present value of the estimated future cash flow may be charged off. The allowance for loan losses on the remaining loans is primarily determined based upon consideration of the historical loss factor incorporating a rolling twelve quarter look-back period of the respective segment that have occurred within each pool of loans over the loss emergence period (LEP), adjusted as necessary based upon consideration of qualitative considerations impacting the inherent risk of loss in the respective loan portfolios. The LEP is an estimate of the average amount of time from the point at which a loss is incurred on a loan to the point at which the loss is recognized in the financial statements. Since the LEP may change under various economic environments, we update the LEP calculation on an annual basis. We also consider and adjust historical net loss factors for qualitative factors that impact the inherent risk of loss associated with our loan categories within our total loan portfolio. These include: • Changes in the volume and severity of past due, nonaccrual and adversely classified loans • Changes in the nature and volume of the portfolio and in the terms of loans • Changes in the value of the underlying collateral for collateral dependent loans • Changes in lending policies and procedures, including changes in underwriting standards and collection, charge-off, and recovery practices not considered elsewhere in estimating credit losses • Changes in the quality of the loan review system • Changes in the experience, ability, and depth of lending management and other relevant staff • Changes in international, national, regional, and local economic and business conditions and developments that affect the collectability of the portfolio • The existence and effect of any concentrations of credit, and changes in the level of such concentrations • The effect of other external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in the existing portfolio or pool In management ’ s opinion, the balance of the allowance for loan losses, at each balance sheet date, is sufficient to provide for probable loan losses inherent in the corresponding loan portfolio.
Other Real Estate Owned and Repossessed Assets [Policy Text Block]	Other Real Estate Owned and Repossessed Assets - Real estate acquired by foreclosure and assets acquired by repossession are recorded at the fair value of the property less estimated costs to sell at the time of repossession. Subsequent declines in fair value, after transfer to other real estate owned and repossessed assets are recognized through a valuation allowance. Such declines in fair value along with related operating expenses to administer such properties or assets are charged directly to operating expense.
Premises and Equipment [Policy Text Block]	Premises and Equipment - Premises and equipment are stated at cost, less accumulated depreciation and amortization. Depreciation and amortization included in operating expenses are computed largely on the straight-line method. Depreciation is based on the estimated useful lives of the assets (buildings and improvements 20-40 years; furniture and equipment 7-10 years; data processing equipment 5-7 years) and, in the case of leasehold improvements, amortization is computed over the terms of the respective leases or their estimated useful lives, whichever is shorter. Gains or losses on disposition are reflected in earnings.
Equity and Cost Method Investments, Policy [Policy Text Block]	Investments in Real Estate Limited Partnerships - These limited partnerships acquire, develop and operate low and moderate-income housing. As a limited partner in these projects, we receive low income housing tax credits and tax deductions for losses incurred by the underlying properties. We apply the proportional amortization method allowed in Accounting Standards Update 2014-01 "Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects." The proportional amortization method permits an entity to amortize the initial cost of the investment in proportion to the amount of the tax credits and other tax benefits received and to recognize the net investment performance in the income statement as a component of income tax expense.
Income Taxes [Policy Text Block]	Income Taxes - Arrow accounts for income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income tax expense in the period that includes the enactment date. Arrow ’ s policy is that deferred tax assets are reduced by a valuation allowance if, based on the weight of available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized.
Goodwill and Other Intangible Assets [Policy Text Block]	Goodwill and Other Intangible Assets - Identifiable intangible assets acquired in a business combination are capitalized and amortized. Any remaining unidentifiable intangible asset is classified as goodwill, for which amortization is not required but which must be evaluated for impairment. Arrow tests for impairment of goodwill on an annual basis, or when events and circumstances indicate potential impairment. In evaluating goodwill for impairment, Arrow first assesses certain qualitative factors to determine if it is more likely than not that the fair value of the reporting unit is less than its carrying value. If it is more likely than not that the fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is considered not impaired. If the carrying amount of a reporting unit exceeds its fair value, the second step of the goodwill impairment test is performed to measure the amount of impairment loss, if any. The carrying amounts of other recognized intangible assets that meet recognition criteria and for which separate accounting records have been maintained (core deposit intangibles and mortgage servicing rights), have been included in the consolidated balance sheet as “ Other Intangible Assets, Net. ” Core deposit intangibles are being amortized on a straight-line basis over a period of ten to fifteen years. Arrow has sold residential real estate loans, primarily to Freddie Mac, with servicing retained. Mortgage servicing rights are recognized as an asset when loans are sold with servicing retained, by allocating the cost of an originated mortgage loan between the loan and servicing right based on estimated relative fair values. The cost allocated to the servicing right is capitalized as a separate asset and amortized in proportion to, and over the period of, estimated net servicing income. Capitalized mortgage servicing rights are evaluated for impairment by comparing the asset ’ s carrying value to its current estimated fair value. Fair values are estimated using a discounted cash flow approach, which considers future servicing income and costs, current market interest rates, and anticipated prepayment, and default rates. Impairment losses are recognized through a valuation allowance for servicing rights having a current fair value that is less than amortized cost on an aggregate basis. Adjustments to increase or decrease the valuation allowance are charged or credited to income as a component of other operating income.
Pension and Postretirement Benefits [Policy Text Block]	Pension and Postretirement Benefits - Arrow maintains a non-contributory, defined benefit pension plan covering substantially all employees, a supplemental pension plan covering certain executive officers selected by the Board of Directors, and certain post-retirement medical, dental and life insurance benefits for employees and retirees. The costs of these plans, based on actuarial computations of current and future benefits for employees, are charged to current operating expenses. The cost of post-retirement benefits other than pensions is recognized on an accrual basis as employees perform services to earn the benefits. Arrow recognizes the overfunded or underfunded status of our single employer defined benefit pension plan as an asset or liability on its consolidated balance sheet and recognizes changes in the funded status in comprehensive income in the year in which the change occurred. Prior service costs or credits are amortized on a straight-line basis over the average remaining service period of active participants. Gains and losses in excess of 10% of the greater of the benefit obligation or the fair value of assets are amortized over the average remaining service period of active participants. The discount rate assumption is determined by preparing an analysis of the respective plan’s expected future cash flows and high-quality fixed-income investments currently available and expected to be available during the period to maturity of the pension benefits.
Share-Based Compensation Plans [Policy Text Block]	Stock-Based Compensation Plans - Arrow has two stock option plans, which are described more fully in Note 12. The Company expenses the grant date fair value of options granted. The expense is recognized over the vesting period of the grant, typically four years, on a straight-line basis. Shares are generally issued from treasury for the exercise of stock options. Arrow sponsors an Employee Stock Purchase Plan ("ESPP") under which employees may purchase Arrow ’ s common stock at a 5% discount below market price at the time of purchase. This stock purchase plan is not considered a compensatory plan. Arrow sponsors an Employee Stock Ownership Plan ("ESOP"), a qualified defined contribution plan. The ESOP has borrowed funds from one of Arrow ’ s subsidiary banks to purchase Arrow common stock. The shares pledged as collateral are reported as a reduction of Arrow ’ s stockholders ’ equity. Compensation expense is recognized as shares are released for allocation to individual employee accounts equal to the current average market price.
Securities Sold Under Agreements to Repurchase [Policy Text Block]	Securities Sold Under Agreements to Repurchase - In securities repurchase agreements, Arrow receives cash from a counterparty in exchange for the transfer of securities to a third party custodian ’ s account that explicitly recognizes Arrow ’ s interest in the securities. These agreements are accounted for by Arrow as secured financing transactions, since it maintains effective control over the transferred securities, and meets other criteria for such accounting. Accordingly, the cash proceeds are recorded as borrowed funds, and the underlying securities continue to be carried in Arrow ’ s securities available-for-sale portfolio.
Earnings Per Share [Policy Text Block]	Earnings Per Share ( “ EPS ” ) - Basic EPS excludes dilution and is computed by dividing income available to common stockholders by the weighted average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the entity (such as Arrow ’ s stock options), computed using the treasury stock method. Unallocated common shares held by Arrow ’ s Employee Stock Ownership Plan are not included in the weighted average number of common shares outstanding for either the basic or diluted EPS calculation.
Financial Instruments [Policy Text Block]	Financial Instruments - Arrow is a party to certain financial instruments with off-balance sheet risk, such as: commercial lines of credit, construction lines of credit, overdraft protection, home equity lines of credit and standby letters of credit. Arrow's policy is to record such instruments when funded. Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. These estimates do not reflect any premium or discount that could result from offering for sale at one time Arrow's entire holdings of a particular financial instrument. Because no market exists for a significant portion of Arrow's financial instruments, fair value estimates are based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and therefore cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Fair value estimates are based on existing on- and off-balance sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. For example, Arrow has a trust department that contributes net fee income annually. The value of trust department customer relationships is not considered a financial instrument of the Company, and therefore this value has not been incorporated into the fair value estimates. Other significant assets and liabilities that are not considered financial assets or liabilities include deferred taxes, premises and equipment, the value of low-cost, long-term core deposits and goodwill. In addition, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on fair value estimates and have not been considered in any of the estimates. The carrying amount of the following short-term assets and liabilities is a reasonable estimate of fair value: cash and due from banks, federal funds sold and purchased, securities sold under agreements to repurchase, demand deposits, savings, N.O.W. and money market deposits, other short-term borrowings, accrued interest receivable and accrued interest payable. The fair value estimates of other on- and off-balance sheet financial instruments, as well as the method of arriving at fair value estimates, are included in the related footnotes and summarized in Note 17. Fair Value Measures - We determine the fair value of financial instruments under the following hierarchy: • Level 1 – Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; • Level 2 – Quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs that are observable, either directly or indirectly, for substantially the full term of the asset or liability; • Level 3 – Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity). A financial instrument ’ s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement.
Management's Use of Estimates [Policy Text Block]	Management ’ s Use of Estimates -The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of income and expenses during the reporting period. Our most significant estimates are the allowance for loan losses, the evaluation of other-than-temporary impairment of investment securities, goodwill impairment, pension and other postretirement liabilities and an analysis of a need for a valuation allowance for deferred tax assets. Actual results could differ from those estimates. A material estimate that is particularly susceptible to significant change in the near term is the allowance for loan losses. In connection with the determination of the allowance for loan losses, management obtains appraisals for properties. The allowance for loan losses is management ’ s best estimate of probable loan losses incurred as of the balance sheet date. While management uses available information to recognize losses on loans, future adjustments to the allowance for loan losses may be necessary based on changes in economic conditions.
Recent Accounting Pronouncements [Policy Text Block]	Recent Accounting Pronouncements During 2015, the FASB issued 17 accounting standards updates and, through the date of this report, four additional standard in 2016. The standards listed below did not have had an immediate impact on Arrow, but could in the future. ASU 2015-01 "Income Statement - Extraordinary and Unusual Items" eliminated the concept of extraordinary items. For Arrow, the standard is effective for the first quarter of 2016. ASU 2015-02 "Consolidation" changed the analysis that a reporting entity must perform to determine whether it should consolidate certain types of legal entities. For Arrow, the standard is effective for the first quarter of 2016. ASU 2015-03 and ASU 2015-15 "Interest - Imputation of Interest" required debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability. There were no changes to the recognition and measurement of debt issuance costs. For Arrow, the standard is effective for the first quarter of 2016. ASU 2015-04 "Compensation-Retirement Benefits" provides several practical expedients for the measurement or, in certain circumstances, the remeasurement of defined benefit plan assets and obligations. Most of the practical expedients will not apply to Arrow, however, if used, an entity must disclose the accounting policy election and the date used to measure defined benefit plan assets and obligations. For Arrow, the standard is effective for the first quarter of 2016. ASU 2015-05 "Intangibles - Goodwill and Other - Internal use Software" provides guidance to customers about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, then the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. For Arrow, the standard is effective for the first quarter of 2016. ASU 2015-06 "Earnings Per Share" contains guidance that addresses master limited partnerships. For Arrow, the standard is effective for the first quarter of 2016. ASU 2015-07 "Fair Value Measurement" permits a reporting entity to measure the fair value of certain investments using the net asset value per share of the investment. For Arrow, the standard is effective for the first quarter of 2016. ASU 2015-08 "Business Combinations" amended various SEC paragraphs pursuant to SEC Staff Accounting Bulletin No. 115. ASU 2016-01 "Recognition and Measurement of Financial Assets and Financial Liabilities" will significantly change the income statement impact of equity investments. For Arrow, the standard is effective for the first quarter of 2018, and will require that equity investments be measured at fair value, with changes in fair value measured in net income. Currently, we hold a small portfolio of equity investments and we do not expect that the adoption of this change in accounting for equity investments will have a material impact on our financial position or the results of operations in periods subsequent to its adoption. ASU 2016-2 "Leases" will require the recognition of operating leases. For Arrow, the standard becomes effective in the first quarter of 2019. We do not expect that the adoption of this change in accounting for operating leases will have a material impact on our financial position or the results of operations in periods subsequent to its adoption.

Cash and Cash Equivalents (Tabl

Cash and Cash Equivalents (Tables)	12 Months Ended
	Dec. 31, 2015
Cash and Cash Equivalents [Abstract]
Schedule of Cash and Cash Equivalents [Table Text Block]	The following table is the schedule of cash and cash equivalents at December 31, 2015 and 2014 : 2015 2014 Cash and Due From Banks $ 34,816 $ 35,081 Interest-Bearing Deposits at Banks 16,252 11,214 Total Cash and Cash Equivalents $ 51,068 $ 46,295 Supplemental Information: Total required reserves, including vault cash and Federal Reserve Bank deposits $ 23,446 $ 19,989

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities [Table Text Block]	The following table is the schedule of Available-For-Sale Securities at December 31, 2015 and 2014 : Available-For-Sale Securities U.S. Agency Obligations State and Municipal Obligations Mortgage- Backed Securities - Residential Corporate and Other Debt Securities Mutual Funds and Equity Securities Total Available- For-Sale Securities December 31, 2015 Available-For-Sale Securities, at Amortized Cost $ 155,932 $ 52,306 $ 177,376 $ 14,544 $ 1,120 $ 401,278 Available-For-Sale Securities, at Fair Value 155,782 52,408 178,588 14,299 1,232 402,309 Gross Unrealized Gains 264 105 2,236 — 112 2,717 Gross Unrealized Losses 414 3 1,024 245 — 1,686 Available-For-Sale Securities, Pledged as Collateral, at Fair Value 310,857 Maturities of Debt Securities, at Amortized Cost: Within One Year — 23,954 13,460 5,613 — 43,027 From 1 - 5 Years 155,932 26,753 153,333 7,931 — 343,949 From 5 - 10 Years — 999 10,583 — — 11,582 Over 10 Years — 600 — 1,000 — 1,600 Maturities of Debt Securities, at Fair Value: Within One Year — 23,972 13,658 5,609 — 43,239 From 1 - 5 Years 155,782 26,837 153,920 7,890 — 344,429 From 5 - 10 Years — 999 11,010 — — 12,009 Over 10 Years — 600 — 800 — 1,400 Securities in a Continuous Loss Position, at Fair Value: Less than 12 Months $ 76,802 $ 4,289 $ 99,569 $ 3,616 $ — $ 184,276 12 Months or Longer — 1,443 903 10,671 — 13,017 Total $ 76,802 $ 5,732 $ 100,472 $ 14,287 $ — $ 197,293 Number of Securities in a Continuous Loss Position 21 19 30 19 — 89 Unrealized Losses on Securities in a Continuous Loss Position: Less than 12 Months $ 413 $ 2 $ 1,023 $ 2 $ — $ 1,440 12 Months or Longer 1 1 1 243 — 246 Total $ 414 $ 3 $ 1,024 $ 245 $ — $ 1,686 Available-For-Sale Securities U.S. Agency Obligations State and Municipal Obligations Mortgage- Backed Securities - Residential Corporate and Other Debt Securities Mutual Funds and Equity Securities Total Available- For-Sale Securities December 31, 2014 Available-For-Sale Securities, at Amortized Cost $ 137,540 $ 81,582 $ 124,732 $ 16,988 $ 1,120 $ 361,962 Available-For-Sale Securities, at Fair Value 137,603 81,730 128,827 16,725 1,254 366,139 Gross Unrealized Gains 208 187 4,100 7 134 4,636 Gross Unrealized Losses 145 39 5 270 — 459 Available-For-Sale Securities, Pledged as Collateral, at Fair Value 267,384 Securities in a Continuous Loss Position, at Fair Value: Less than 12 Months $ 39,631 $ 3,309 $ 82 $ — $ — $ 43,022 12 Months or Longer 28,020 14,035 1,546 10,738 — 54,339 Total $ 67,651 $ 17,344 $ 1,628 $ 10,738 $ — $ 97,361 Number of Securities in a Continuous Loss Position 22 65 3 15 — 105 Unrealized Losses on Securities in a Continuous Loss Position: Less than 12 Months $ 48 $ — $ — $ — $ — $ 48 12 Months or Longer 97 39 5 270 — 411 Total $ 145 $ 39 $ 5 $ 270 $ — $ 459
Held-to-maturity Securities [Table Text Block]	The following table is the schedule of Held-To-Maturity Securities at December 31, 2015 and 2014 : Held-To-Maturity Securities State and Municipal Obligations Mortgage- Backed Securities - Residential Corporate and Other Debt Securities Total Held-To Maturity Securities December 31, 2015 Held-To-Maturity Securities, at Amortized Cost $ 226,053 $ 93,558 $ 1,000 $ 320,611 Held-To-Maturity Securities, at Fair Value 230,621 94,309 1,000 325,930 Gross Unrealized Gains 4,619 868 — 5,487 Gross Unrealized Losses 51 117 — 168 Held-To-Maturity Securities, Pledged as Collateral, at Fair Value 299,767 Maturities of Debt Securities, at Amortized Cost: Within One Year 36,615 — — 36,615 From 1 - 5 Years 91,014 61,550 — 152,564 From 5 - 10 Years 94,418 32,008 — 126,426 Over 10 Years 4,006 — 1,000 5,006 Held-To-Maturity Securities State and Municipal Obligations Mortgage- Backed Securities - Residential Corporate and Other Debt Securities Total Held-To Maturity Securities Maturities of Debt Securities, at Fair Value: Within One Year 36,695 — — 36,695 From 1 - 5 Years 93,335 62,040 — 155,375 From 5 - 10 Years 96,498 32,269 — 128,767 Over 10 Years 4,093 — 1,000 5,093 Securities in a Continuous Loss Position, at Fair Value: Less than 12 Months $ 2,302 $ 6,000 $ — $ 8,302 12 Months or Longer 11,764 4,154 — 15,918 Total $ 14,066 $ 10,154 $ — $ 24,220 Number of Securities in a Continuous Loss Position 54 8 — 62 Unrealized Losses on Securities in a Continuous Loss Position: Less than 12 Months $ 11 $ 93 $ — $ 104 12 Months or Longer 40 24 — 64 Total $ 51 $ 117 $ — $ 168 December 31, 2014 Held-To-Maturity Securities, at Amortized Cost $ 188,472 $ 112,552 $ 1,000 $ 302,024 Held-To-Maturity Securities, at Fair Value 193,252 114,314 1,000 308,566 Gross Unrealized Gains 4,935 1,770 — 6,705 Gross Unrealized Losses 155 8 — 163 Held-To-Maturity Securities, Pledged as Collateral, at Fair Value 282,640 Securities in a Continuous Loss Position, at Fair Value: Less than 12 Months $ 2,143 $ 4,581 $ — $ 6,724 12 Months or Longer 16,033 — — 16,033 Total $ 18,176 $ 4,581 $ — $ 22,757 Number of Securities in a Continuous Loss Position 74 1 — 75 Unrealized Losses on Securities in a Continuous Loss Position: Less than 12 Months $ 17 $ 8 $ — $ 25 12 Months or Longer 138 — — 138 Total $ 155 $ 8 $ — $ 163
Schedule of Cost Method Investments [Table Text Block]		Schedule of Federal Reserve Bank and Federal Home Loan Bank Stock Federal Reserve Bank and Federal Home Loan Bank Stock are carried at cost. December 31, 2015 2014 Federal Reserve Bank Stock $ 1,060 $ 1,048 Federal Home Loan Bank Stock 7,779 3,803 Total Federal Reserve Bank and Federal Home Loan Bank Stock $ 8,839 $ 4,851

Loans (Tables)

Loans (Tables)	12 Months Ended
	Dec. 31, 2015	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, 2015 and December 31, 2014 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 Real Estate Consumer Residential Total December 31, 2015 Loans Past Due 30-59 Days $ 98 $ — $ 4,598 $ 955 $ 5,651 Loans Past Due 60-89 Days 186 — 1,647 1,370 3,203 Loans Past Due 90 or More Days 203 1,469 295 2,184 4,151 Total Loans Past Due 487 1,469 6,540 4,509 13,005 Current Loans 102,100 383,470 457,983 617,394 1,560,947 Total Loans $ 102,587 $ 384,939 $ 464,523 $ 621,903 $ 1,573,952 Loans 90 or More Days Past Due and Still Accruing Interest $ — $ — $ — $ 187 $ 187 Nonaccrual Loans $ 387 $ 2,401 $ 450 $ 3,195 $ 6,433 December 31, 2014 Loans Past Due 30-59 Days $ 124 $ 432 $ 4,167 $ 482 $ 5,205 Loans Past Due 60-89 Days 154 7 1,225 1,495 2,881 Loans Past Due 90 or more Days 345 1,832 206 2,999 5,382 Total Loans Past Due 623 2,271 5,598 4,976 13,468 Current Loans 98,888 337,841 431,443 531,628 1,399,800 Total Loans $ 99,511 $ 340,112 $ 437,041 $ 536,604 $ 1,413,268 Loans 90 or More Days Past Due and Still Accruing Interest $ — $ — $ — $ 537 $ 537 Nonaccrual Loans $ 473 $ 2,071 $ 415 $ 3,940 $ 6,899
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 Real Estate Consumer Residential Unallocated Total Rollfoward of the Allowance for Loan Losses for the Year Ended: December 31, 2014 $ 2,100 $ 4,128 $ 5,210 $ 3,369 $ 763 $ 15,570 Charge-offs (62 ) (7 ) (711 ) (326 ) — (1,106 ) Recoveries 34 — 193 — — 227 Provision (245 ) 399 862 747 (416 ) 1,347 December 31, 2015 $ 1,827 $ 4,520 $ 5,554 $ 3,790 $ 347 $ 16,038 December 31, 2013 $ 1,886 $ 3,962 $ 4,478 $ 3,026 $ 1,082 $ 14,434 Charge-offs (212 ) — (718 ) (91 ) — (1,021 ) Recoveries 86 — 223 — — 309 Provision 340 166 1,227 434 (319 ) 1,848 December 31, 2014 $ 2,100 $ 4,128 $ 5,210 $ 3,369 $ 763 $ 15,570 December 31, 2012 $ 2,344 $ 3,651 $ 4,840 $ 3,405 $ 1,058 $ 15,298 Charge-offs (926 ) (11 ) (459 ) (15 ) — (1,411 ) Recoveries 88 — 259 — — 347 Provision 380 322 (162 ) (364 ) 24 200 December 31, 2013 $ 1,886 $ 3,962 $ 4,478 $ 3,026 $ 1,082 $ 14,434 Allowance for Loan Losses Commercial Commercial Real Estate Consumer Residential Unallocated Total December 31, 2015 Allowance for loan losses - Loans Individually Evaluated for Impairment $ — $ — $ — $ — $ — $ — Allowance for loan losses - Loans Collectively Evaluated for Impairment $ 1,827 $ 4,520 $ 5,554 $ 3,790 $ 347 $ 16,038 Ending Loan Balance - Individually Evaluated for Impairment $ 155 $ 2,372 $ 114 $ 645 $ — $ 3,286 Ending Loan Balance - Collectively Evaluated for Impairment $ 102,432 $ 382,567 $ 464,409 $ 621,258 $ — $ 1,570,666 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 $ 4,128 $ 5,210 $ 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 $ 338,620 $ 436,923 $ 534,367 $ — $ 1,408,927
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, 2015 and December 31, 2014 : Loan Credit Quality Indicators Commercial Commercial Real Estate Consumer Residential Total December 31, 2015 Credit Risk Profile by Creditworthiness Category: Satisfactory $ 93,607 $ 360,654 $ 454,261 Special Mention 1,070 4,901 5,971 Substandard 7,910 19,384 27,294 Doubtful — — — Credit Risk Profile Based on Payment Activity: Performing $ 464,074 $ 618,521 1,082,595 Nonperforming 449 3,382 3,831 December 31, 2014 Credit Risk Profile by Creditworthiness Category: Satisfactory $ 85,949 $ 317,747 $ 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 $ 436,626 $ 532,127 968,753 Nonperforming 415 4,477 4,892
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 Real Estate Consumer Residential Total December 31, 2015 Recorded Investment: With No Related Allowance $ 155 $ 2,372 $ 114 $ 645 $ 3,286 With a Related Allowance — — — — — Unpaid Principal Balance: With No Related Allowance $ 155 $ 2,372 $ 144 $ 645 $ 3,316 With a Related Allowance — — — — — 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 For the Year-To-Date Period Ended: December 31, 2015 Average Recorded Balance: With No Related Allowance $ 325 $ 1,932 $ 116 $ 1,162 $ 3,535 With a Related Allowance — — — 280 $ 280 Interest Income Recognized: With No Related Allowance $ — $ 9 $ 14 $ — $ 23 With a Related Allowance — — — — — Cash Basis Income: With No Related Allowance $ — $ — $ — $ — $ — With a Related Allowance — — — — — Related Allowance — — — — $ — 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 — — — — — 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 — — — — $ —
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 Real Estate Consumer Residential Total For the Year Ended: December 31, 2015 Number of Loans — 1 4 — 5 Pre-Modification Outstanding Recorded Investment $ — $ 883 $ 51 $ — $ 934 Post-Modification Outstanding Recorded Investment $ — $ 883 $ 51 $ — $ 934 Subsequent Default, Number of Contracts — — — — — Subsequent Default, Recorded Investment — — — — — Commitments to lend additional funds to modified loans — — — — — 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 — — — — —
Financing Receivable Supplemental Information [Table Text Block]	Schedule of Supplemental Loan Information 2015 2014 Supplemental Information : Unamortized deferred loan origination costs, net of deferred loan origination fees, included in the above balances $ 3,268 $ 2,771 Overdrawn deposit accounts, included in the above balances 477 973 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 396,956 313,355 Residential real estate loans serviced for Freddie Mac, not included in the balances above 153,795 158,598 Loans held for sale at period-end, included in the above balances 298 398 Loans to Related Parties: Balance at beginning of year $ 6,003 $ 7,769 Adjustment due to change in composition of related parties 2,610 — New loans and renewals, during the year 2,770 694 Repayments, during the year (1,788 ) (2,460 ) Balance at end of year $ 9,595 $ 6,003

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment [Table Text Block]	A summary of premises and equipment at December 31, 2015 and 2014 is presented below: 2015 2014 Land and Bank Premises $ 34,609 $ 35,062 Equipment, Furniture and Fixtures 22,879 22,003 Leasehold Improvements 1,461 1,218 Total Cost 58,949 58,283 Accumulated Depreciation and Amortization (31,509 ) (29,795 ) Net Premises and Equipment $ 27,440 $ 28,488 Amounts charged to expense for depreciation totaled $ 1,892 , $ 1,879 and $ 1,928 in 2015 , 2014 and 2013 , respectively.

Other Intangible Assets (Tables

Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets [Table Text Block]	The following table presents information on Arrow ’ s other intangible assets (other than goodwill) as of December 31, 2015 , 2014 and 2013 : Depositor Intangibles 1 Mortgage Servicing Rights 2 Customer Intangibles 1 Total Gross Carrying Amount, December 31, 2015 $ 2,247 $ 1,822 $ 4,382 $ 8,451 Accumulated Amortization (2,247 ) (1,143 ) (1,954 ) (5,344 ) Net Carrying Amount, December 31, 2015 $ — $ 679 $ 2,428 $ 3,107 Gross Carrying Amount, December 31, 2014 $ 2,247 $ 1,715 $ 4,451 $ 8,413 Accumulated Amortization (2,237 ) (883 ) (1,668 ) (4,788 ) Net Carrying Amount, December 31, 2014 $ 10 $ 832 $ 2,783 $ 3,625 Rollforward of Intangible Assets: Balance, December 31, 2012 $ 153 $ 859 $ 3,480 $ 4,492 Intangible Assets Acquired — 331 — 331 Amortization of Intangible Assets (92 ) (230 ) (361 ) (683 ) Balance, December 31, 2013 61 960 3,119 4,140 Intangible Assets Acquired — 133 — 133 Amortization of Intangible Assets (51 ) (261 ) (336 ) (648 ) Balance, December 31, 2014 10 832 2,783 3,625 Intangible Assets Acquired — 107 — 107 Intangible Assets Disposed — — (38 ) (38 ) Amortization of Intangible Assets (10 ) (260 ) (317 ) (587 ) Balance, December 31, 2015 $ — $ 679 $ 2,428 $ 3,107 1 Amortization of depositor intangibles and customer intangibles are reported in the consolidated statements of income as a component of other operating expense. 2 Amortization of mortgage servicing rights is reported in the consolidated statements of income as a reduction of mortgage servicing fee income, which is included with fees for other services to customers.
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]		The following table presents the remaining estimated annual amortization expense for Arrow's intangible assets as of December 31, 2015 : Mortgage Servicing Rights 2 Customer Intangibles 1 Total Estimated Annual Amortization Expense: 2016 $ 250 $ 293 $ 543 2017 190 273 463 2018 136 256 392 2019 62 239 301 2020 31 226 257 Later Years 10 1,141 1,151 Total $ 679 $ 2,428 $ 3,107 1 Amortization of customer intangibles are reported in the consolidated statements of income as a component of other operating expense. 2 Amortization of mortgage servicing rights is reported in the consolidated statements of income as a reduction of mortgage servicing fee income, which is included with fees for other services to customers.

Guarantees (Tables)

Guarantees (Tables)	12 Months Ended
	Dec. 31, 2015
Guarantees [Abstract]
Schedule of Guarantor Obligations [Table Text Block]	The following table presents the notional amount and fair value of Arrow's off-balance sheet commitments to extend credit and commitments under standby letters of credit as of December 31, 2015 and 2014 : Balance at December 31, 2015 2014 Notional Amount: Commitments to Extend Credit $ 278,623 $ 249,803 Standby Letters of Credit 3,065 3,317 Fair Value: Commitments to Extend Credit $ — $ — Standby Letters of Credit 2 39

Time Deposits (Tables)

Time Deposits (Tables)	12 Months Ended
	Dec. 31, 2015
Time Deposits [Abstract]
Maturities of Time Deposits [Table Text Block]	The following summarizes the contractual maturities of time deposits during years subsequent to December 31, 2015 : Year of Maturity Total Time Deposits 2016 $ 110,935 2017 29,008 2018 16,440 2019 16,743 2020 8,731 2021 and Beyond 7,960 Total $ 189,817

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Debt Disclosure [Abstract]
Schedule of Short-term Debt [Table Text Block]		Schedule of Short-Term Borrowings: 2015 2014 Balances at December 31: Overnight Advances from the Federal Home Loan Bank of New York $ 82,000 $ 41,000 Securities Sold Under Agreements to Repurchase 23,173 19,421 Total Short-Term Borrowings $ 105,173 $ 60,421 Maximum Borrowing Capacity at December 31: Federal Funds Purchased $ 35,000 $ 35,000 Overnight Advances from the Federal Home Loan Bank of New York 396,956 278,886 Federal Reserve Bank of New York 319,623 307,159
Schedule of Maturities of Long-term Debt [Table Text Block]	Maturity Schedule of FHBLNY Term Advances : Balances Weighted Average Rate Final Maturity 2015 2014 2015 2014 First Year $ — $ 10,000 — % 3.88 % Second Year — — — % — % Third Year 10,000 — 1.50 % — % Fourth Year 20,000 — 1.70 % — % Fifth Year 25,000 — 2.02 % — % Total $ 55,000 $ 10,000 1.81 % 3.88 %
Schedule of Long-term Debt Instruments [Table Text Block]	Schedule of Guaranteed Preferred Beneficial Interests in Corporation's Junior Subordinated Debentures 2015 2014 ACST II Balance at December 31, $ 10,000 $ 10,000 Period-End Interest Rate 3.48 % 3.38 % ACST III Balance at December 31, $ 10,000 $ 10,000 Period-End Interest Rate 2.33 % 2.23 %

Comprehensive Income (Tables)

Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Comprehensive Income (Loss) [Table Text Block]	The following table presents the components of other comprehensive income for the years ended December 31, 2015 , 2014 and 2013 : Schedule of Comprehensive Income Before-Tax Amount Tax (Expense) Benefit Net-of-Tax Amount 2015 Net Unrealized Securities Holding Gains Arising During the Period $ (3,017 ) $ 1,185 $ (1,832 ) Reclassification Adjustment for Securities Gains Included in Net Income (129 ) 51 (78 ) Net Retirement Plan Loss 1,395 (547 ) 848 Net Retirement Plan Prior Service Credit (368 ) 144 (224 ) Amortization of Net Retirement Plan Actuarial Loss 846 (332 ) 514 Accretion of Net Retirement Plan Prior Service Credit (56 ) 22 (34 ) Other Comprehensive Income $ (1,329 ) $ 523 $ (806 ) 2014 Net Unrealized Securities Holding Gains Arising During the Period $ 356 $ (124 ) $ 232 Reclassification Adjustment for Securities Gains Included in Net Income (110 ) 43 (67 ) Net Retirement Plan Gain (4,610 ) 1,764 (2,846 ) Amortization of Net Retirement Plan Actuarial Loss 474 (186 ) 288 Accretion of Net Retirement Plan Prior Service Credit (87 ) 34 (53 ) Other Comprehensive Income $ (4,547 ) $ 1,754 $ (2,793 ) 2013 Net Unrealized Securities Holding Gains Arising During the Period $ (4,843 ) $ 1,918 $ (2,925 ) Reclassification Adjustment for Securities Gains Included in Net Income (540 ) 214 (326 ) Net Retirement Plan Loss 10,640 (4,215 ) 6,425 Net Retirement Plan Prior Service Credit — — — Amortization of Net Retirement Plan Actuarial Loss 1,513 (599 ) 914 Accretion of Net Retirement Plan Prior Service Credit 2 (1 ) 1 Other Comprehensive Income $ 6,772 $ (2,683 ) $ 4,089
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]		The following table presents the changes in accumulated other comprehensive income by component: Changes in Accumulated Other Comprehensive Income (Loss) by Component (1) Unrealized Defined Benefit Plan Items Gains and Losses on Net Prior Available-for- Net Gain Service Sale Securities (Loss) (Cost ) Credit Total For the Year-To-Date periods ended: December 31, 2014 $ 2,539 $ (9,255 ) $ (450 ) $ (7,166 ) Other comprehensive income (loss) before reclassifications (1,832 ) 848 (224 ) (1,208 ) Amounts reclassified from accumulated other comprehensive income (loss) (78 ) 514 (34 ) 402 Net current-period other comprehensive income (1,910 ) 1,362 (258 ) (806 ) December 31, 2015 $ 629 $ (7,893 ) $ (708 ) $ (7,972 ) December 31, 2013 $ 2,374 $ (6,697 ) $ (50 ) $ (4,373 ) Other comprehensive income (loss) before reclassifications 232 (2,846 ) (347 ) (2,961 ) Amounts reclassified from accumulated other comprehensive income (loss) (67 ) 288 (53 ) 168 Net current-period other comprehensive income 165 (2,558 ) (400 ) (2,793 ) December 31, 2014 $ 2,539 $ (9,255 ) $ (450 ) $ (7,166 ) December 31, 2012 $ 5,625 $ (14,036 ) $ (51 ) $ (8,462 ) Other comprehensive income (loss) before reclassifications (2,925 ) 6,425 — 3,500 Amounts reclassified from accumulated other comprehensive income (loss) (326 ) 914 1 589 Net current-period other comprehensive income (3,251 ) 7,339 1 4,089 December 31, 2013 $ 2,374 $ (6,697 ) $ (50 ) $ (4,373 ) (1) All amounts are net of tax. Amounts in parentheses indicate debits.
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]		The following table presents the reclassifications out of accumulated other comprehensive income: Reclassifications Out of Accumulated Other Comprehensive Income (1) Amounts Reclassified Details about Accumulated Other from Accumulated Other Affected Line Item in the Statement Comprehensive Income Components Comprehensive Income Where Net Income Is Presented For the Year-to-date periods ended: December 31, 2015 Unrealized gains and losses on available-for-sale securities $ 129 Gain on Securities Transactions, Net 129 Total before tax (51 ) Provision for Income Taxes $ 78 Net of tax Amortization of defined benefit pension items Prior-service costs $ 56 (2) Salaries and Employee Benefits Actuarial gains/(losses) (846 ) (2) Salaries and Employee Benefits (790 ) Total before tax 310 Provision for Income Taxes $ (480 ) Net of tax Total reclassifications for the period $ (402 ) Net of tax December 31, 2014 Unrealized gains and losses on available-for-sale securities $ 110 Gain on Securities Transactions, Net 110 Total before tax (43 ) Provision for Income Taxes $ 67 Net of tax Amortization of defined benefit pension items Prior-service costs 87 (2) Salaries and Employee Benefits Actuarial gains/(losses) $ (474 ) (2) Salaries and Employee Benefits (387 ) Total before tax 152 Provision for Income Taxes $ (235 ) Net of tax Total reclassifications for the period $ (168 ) Net of tax Reclassifications Out of Accumulated Other Comprehensive Income (1) Amounts Reclassified Details about Accumulated Other from Accumulated Other Affected Line Item in the Statement Comprehensive Income Components Comprehensive Income Where Net Income Is Presented December 31, 2013 Unrealized gains and losses on available-for-sale securities $ 540 Gain on Securities Transactions, Net 540 Total before tax (214 ) Provision for Income Taxes $ 326 Net of tax Amortization of defined benefit pension items Prior-service costs (2 ) (2) Salaries and Employee Benefits Actuarial gains/(losses) $ (1,513 ) (2) Salaries and Employee Benefits (1,515 ) Total before tax 600 Provision for Income Taxes $ (915 ) Net of tax Total reclassifications for the period $ (589 ) Net of tax (1) Amounts in parentheses indicate debits to profit/loss. (2) These accumulated other comprehensive income components are included in the computation of net periodic pension cost (see pension footnote for additional details).

Stock Based Compensation (Table

Stock Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]	Roll Forward Schedule of Stock Option Plan by Shares and Weighted Average Exercise Prices Stock Option Plans Roll Forward of Shares Outstanding: Outstanding at January 1, 2015 409,471 Granted 55,590 Exercised (43,589 ) Forfeited (11,990 ) Outstanding at December 31, 2015 409,482 Exercisable at December 31, 2015 275,401 Vested and Expected to Vest 134,081 Roll Forward of Shares Outstanding - Weighted Average Exercise Price: Outstanding at January 1, 2015 $ 22.04 Granted 25.35 Exercised 21.04 Forfeited 23.23 Outstanding at December 31, 2015 22.59 Exercisable at December 31, 2015 21.68 Vested and Expected to Vest 24.47 Weighted Average Remaining Contractual Life (in years): Outstanding at December 31, 2015 5.72 Exercisable at December 31, 2015 4.52 Vested and Expected to Vest 8.19 Aggregate Intrinsic Value: Outstanding at December 31, 2015 $ 1,875 Exercisable at December 31, 2015 1,512 Vested and Expected to Vest 363 Shares Available for Grant at Period-End 401,000
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]	Schedule of Shares Authorized Under the Stock Option Plan by Exercise Price Range Exercise Price Ranges $18.71 to $19.48 $20.82 $21.83 $23.30 to $23.95 $24.51 to $25.27 Total Outstanding Options at December 31, 2015 Number of Shares Outstanding 65,112 13,150 134,458 67,565 129,197 409,482 Weighted-Average Remaining Contractual Life (in years) 2.74 0.92 4.78 6.07 8.51 5.72 Weighted-Average Exercise Price $ 18.89 $ 20.41 $ 22.21 $ 23.48 $ 24.60 $ 22.59 Exercisable Options at December 31, 2015 Number of Shares Outstanding 65,112 13,150 129,679 49,747 17,713 275,401 Weighted-Average Remaining Contractual Life (in years) 2.74 0.92 4.69 6.07 8.08 4.52 Weighted-Average Exercise Price $ 18.89 $ 20.41 $ 22.19 $ 23.48 $ 24.03 $ 21.68
Other Stock Based Compensation Disclosure Table [Table Text Block]	Schedule of Other Stock Option Plan Information 2015 2014 2013 Shares Granted 55,590 75,518 10,404 Weighted Average Grant Date Information: Fair Value of Options Granted $ 5.67 $ 5.80 $ 5.25 Fair Value Assumptions: Dividend Yield 3.90 % 3.97 % 4.20 % Expected Volatility 33.55 % 35.30 % 36.57 % Risk Free Interest Rate 1.57 % 2.19 % 1.31 % Expected Lives (in years) 7.66 6.85 6.71 Amount Expensed During the Year $ 308 $ 360 $ 372 Compensation Costs for Non-vested Awards Not Yet Recognized 500 478 420 Weighted Average Expected Vesting Period, In Years 2.12 1.68 1.45 Proceeds From Stock Options Exercised $ 917 $ 1,454 $ 1,254 Tax Benefits Related to Stock Options Exercised 59 25 23 Intrinsic Value of Stock Options Exercised 250 170 267
Schedule of Employee Stock Ownership Plan (ESOP) Disclosures [Table Text Block]	Schedule of ESOP Compensation Expense 2015 2014 2013 ESOP Compensation Expense $ 900 $ 800 $ 600 As the debt is repaid, shares are released from collateral based on the proportion of debt paid to total debt outstanding for the year and allocated to active employees. Shares pledged as collateral are reported as unallocated ESOP shares in stockholders ’ equity. As shares are released from collateral, Arrow reports compensation expense equal to the current average market price of the shares, and the shares become outstanding for earnings per share computations. The ESOP shares as of December 31, 2015 were as follows: Schedule of Shares in ESOP Plan ESOP Plan Shares: 2015 Allocated Shares 684,016 Shares Released for Allocation During 2015 17,645 Unallocated Shares 55,275 Total ESOP Shares 756,936 Market Value of Unallocated Shares $ 1,502

Retirement Benefit Plans (Table

Retirement Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Schedule of Defined Benefit Plans Disclosures [Table Text Block]	The following tables set forth changes in the plans ’ benefit obligations (projected benefit obligation for pension benefits and accumulated benefit obligation for postretirement benefits) and changes in the plans ’ assets and the funded status of the pension plans and other postretirement benefit plan at December 31: Schedule of Defined Benefit Plan Disclosures Employees' Pension Plan Select Executive Retirement Plan Postretirement Benefit Plans Defined Benefit Plan Funded Status December 31, 2015 Fair Value of Plan Assets $ 47,234 $ — $ — Benefit Obligation 35,982 4,784 7,701 Funded Status of Plan $ 11,252 $ (4,784 ) $ (7,701 ) December 31, 2014 Fair Value of Plan Assets $ 45,704 $ — $ — Benefit Obligation 36,966 5,072 9,170 Funded Status of Plan $ 8,738 $ (5,072 ) $ (9,170 ) Change in Benefit Obligation Benefit Obligation, at January 1, 2015 $ 36,966 $ 5,072 $ 9,170 Service Cost 1,503 32 250 Interest Cost 1,545 211 394 Plan Participants' Contributions — — 481 Amendments 277 91 — Actuarial Gain (1,670 ) (152 ) (1,715 ) Benefits Paid (2,639 ) (470 ) (879 ) Benefit Obligation, at December 31, 2015 $ 35,982 $ 4,784 $ 7,701 Schedule of Defined Benefit Plan Disclosures Employees' Pension Plan Select Executive Retirement Plan Postretirement Benefit Plans Benefit Obligation, at January 1, 2014 $ 33,259 $ 4,459 $ 7,619 Service Cost 1,410 10 173 Interest Cost 1,621 206 374 Plan Participants' Contributions — — 383 Amendments — — 570 Actuarial Loss 2,909 870 884 Benefits Paid (2,233 ) (473 ) (833 ) Benefit Obligation, at December 31, 2014 $ 36,966 $ 5,072 $ 9,170 Change in Fair Value of Plan Assets Fair Value of Plan Assets, at January 1, 2015 $ 45,704 $ — $ — Actual Return on Plan Assets 1,169 — — Employer Contributions 3,000 470 398 Plan Participants' Contributions — — 481 Benefits Paid (2,639 ) (470 ) (879 ) Fair Value of Plan Assets, at December 31, 2015 $ 47,234 $ — $ — Change in Fair Value of Plan Assets, continued Fair Value of Plan Assets, at January 1, 2014 $ 44,653 $ — $ — Actual Return on Plan Assets 3,284 — — Employer Contributions — 473 450 Plan Participants' Contributions — — 383 Benefits Paid (2,233 ) (473 ) (833 ) Fair Value of Plan Assets, at December 31, 2014 $ 45,704 $ — $ — Accumulated Benefit Obligation at December 31, 2015 $ 35,582 $ 4,784 $ 7,701 Amounts Recognized in the Consolidated Balance Sheets December 31, 2015 Prepaid Pension Asset $ 11,252 $ — — Accrued Benefit Liability — (4,784 ) (7,701 ) Net Benefit Recognized $ 11,252 $ (4,784 ) $ (7,701 ) December 31, 2014 Prepaid Pension Asset $ 8,738 $ — — Accrued Benefit Liability — (5,072 ) (9,170 ) Net Benefit Recognized $ 8,738 $ (5,072 ) $ (9,170 ) Amounts Recognized in Other Comprehensive Income (Loss) For the Year Ended December 31, 2015 Net Unamortized Gain Arising During the Period $ 472 $ (152 ) $ (1,715 ) Net Prior Service Cost Arising During the Period 277 91 — Amortization of Net Loss (601 ) (131 ) (114 ) Amortization of Prior Service (Cost) Credit 83 (58 ) 31 Total Other Comprehensive (Loss) Income for Pension and Other Postretirement Benefit Plans $ 231 $ (250 ) $ (1,798 ) For the Year Ended December 31, 2014 Net Unamortized Loss Arising During the Period $ 2,855 $ 871 $ 884 Net Prior Service Cost Arising During the Period — — 570 Amortization of Net Loss (356 ) (93 ) (25 ) Amortization of Prior Service (Cost) Credit 45 (72 ) 114 Total Other Comprehensive (Loss) Income for Pension and Other Postretirement Benefit Plans $ 2,544 $ 706 $ 1,543 Schedule of Defined Benefit Plan Disclosures Employees' Pension Plan Select Executive Retirement Plan Postretirement Benefit Plans For the Year Ended December 31, 2013 Net Unamortized Loss Arising During the Period $ (8,438 ) $ (554 ) $ (1,648 ) Net Prior Service Cost Arising During the Period — — — Amortization of Net Loss (1,231 ) (140 ) (142 ) Amortization of Prior Service (Cost) Credit (37 ) (79 ) 114 Total Other Comprehensive (Loss) Income for Pension and Other Postretirement Benefit Plans $ (9,706 ) $ (773 ) $ (1,676 ) Accumulated Other Comprehensive Income December 31, 2015 Net Actuarial Loss $ 10,727 $ 2,169 $ 90 Prior Service (Credit) Cost 150 603 410 Total Accumulated Other Comprehensive Income, Before Tax $ 10,877 $ 2,772 $ 500 December 31, 2014 Net Actuarial Loss $ 10,856 $ 2,452 $ 1,919 Prior Service (Credit) Cost (210 ) 570 379 Total Accumulated Other Comprehensive Income, Before Tax $ 10,646 $ 3,022 $ 2,298 Amounts that will be Amortized from Accumulated Other Comprehensive Income the Next Year Net Actuarial Loss $ 559 $ 112 $ — Prior Service (Credit) Cost $ (57 ) $ 57 $ (12 ) Net Periodic Benefit Cost For the Year Ended December 31, 2015 Service Cost $ 1,503 $ 32 $ 250 Interest Cost 1,545 211 394 Expected Return on Plan Assets (3,311 ) — — Amortization of Prior Service (Credit) Cost (83 ) 58 (31 ) Amortization of Net Loss 601 131 114 Net Periodic Benefit Cost $ 255 $ 432 $ 727 For the Year Ended December 31, 2014 Service Cost $ 1,410 $ 10 $ 173 Interest Cost 1,621 206 374 Expected Return on Plan Assets (3,230 ) — — Amortization of Prior Service (Credit) Cost (45 ) 72 (114 ) Amortization of Net Loss 356 93 25 Net Periodic Benefit Cost $ 112 $ 381 $ 458 For the Year Ended December 31, 2013 Service Cost $ 1,506 $ — $ 211 Interest Cost 1,261 163 308 Expected Return on Plan Assets (2,889 ) — — Amortization of Prior Service (Credit) Cost 37 79 (114 ) Amortization of Net Loss 1,232 139 142 Net Periodic Benefit Cost $ 1,147 $ 381 $ 547 Schedule of Defined Benefit Plan Disclosures Employees' Pension Plan Select Executive Retirement Plan Postretirement Benefit Plans Weighted-Average Assumptions Used in Calculating Benefit Obligation December 31, 2015 Discount Rate 4.73 % 4.61 % 4.69 % Rate of Compensation Increase 3.50 % 3.00 % 3.50 % Interest Rate Credit for Determining Projected Cash Balance Account 3.03 % Interest Rate to Annuitize Cash Balance Account 5.00 % Interest Rate to Convert Annuities to Actuarially Equivalent Lump Sum Amounts 5.00 % 5.00 % December 31, 2014 Discount Rate 4.31 % 4.26 % 4.31 % Rate of Compensation Increase 3.50 % 3.50 % 3.50 % Interest Rate Credit for Determining Projected Cash Balance Account 3.04 % Interest Rate to Annuitize Cash Balance Account 4.75 % Interest Rate to Convert Annuities to Actuarially Equivalent Lump Sum Amounts 4.75 % 4.75 % Weighted-Average Assumptions Used in Calculating Net Periodic Benefit Cost December 31, 2015 Discount Rate 4.31 % 4.26 % 4.31 % Expected Long-Term Return on Plan Assets 7.50 % Rate of Compensation Increase 3.50 % 3.50 % 3.50 % Interest Rate Credit for Determining Projected Cash Balance Account 3.04 % Interest Rate to Annuitize Cash Balance Account 4.75 % Interest Rate to Convert Annuities to Actuarially Equivalent Lump Sum Amounts 4.75 % 4.75 % December 31, 2014 Discount Rate 5.10 % 4.85 % 5.10 % Expected Long-Term Return on Plan Assets 7.50 % Rate of Compensation Increase 3.50 % 3.50 % 3.50 % Interest Rate Credit for Determining Projected Cash Balance Account 4.00 % Interest Rate to Annuitize Cash Balance Account 5.25 % Interest Rate to Convert Annuities to Actuarially Equivalent Lump Sum Amounts 5.25 % 5.25 % Schedule of Defined Benefit Plan Disclosures Employees' Pension Plan Select Executive Retirement Plan Postretirement Benefit Plans December 31, 2013 Discount Rate 3.55 % 3.15 % 3.55 % Expected Long-Term Return on Plan Assets 7.50 % Rate of Compensation Increase 3.50 % 3.50 % 3.50 % Interest Rate Credit for Determining Projected Cash Balance Account 3.00 % Interest Rate to Annuitize Cash Balance Account 4.50 % Interest Rate to Convert Annuities to Actuarially Equivalent Lump Sum Amounts 4.50 % 4.50 % Schedule of Defined Benefit Plan Disclosures Information about Defined Benefit Plan Assets - Employees' Pension Plan Fair Value Measurements Using: Asset Category Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Percent of Total Target Allocation Minimum Target Allocation Maximum December 31, 2015 Cash $ 44 $ — $ — $ 44 0.1 % — % 15.0 % Interest-Bearing Money Market Fund 2,471 — — 2,471 5.2 % — % 15.0 % Arrow Common Stock 1 4,554 — — 4,554 9.6 % — % 10.0 % North Country Funds - Equity 2 19,625 — — 19,625 41.6 % Other Mutual Funds - Equity 13,194 — — 13,194 27.9 % Total Equity Funds 32,819 — — 32,819 69.5 % 55.0 % 85.0 % North Country Funds - Fixed income 2 7,346 — — 7,346 15.6 % Other Mutual Funds - Fixed Income — — — — — % Total Fixed Income Funds 7,346 — — 7,346 15.6 % 15.0 % 30.0 % Total $ 47,234 $ — $ — $ 47,234 100.0 % December 31, 2014 Cash $ 20 $ — $ — $ 20 — % — % 15.0 % Interest-Bearing Money Market Fund 4,322 — — 4,322 9.5 % — % 15.0 % Arrow Common Stock 1 4,551 — — 4,551 10.0 % — % 10.0 % North Country Funds - Equity 2 18,975 — — 18,975 41.4 % Other Mutual Funds - Equity 10,954 — — 10,954 24.0 % Total Equity Funds 29,929 — — 29,929 65.4 % 66.0 % 85.0 % North Country Funds - Fixed income 2 5,436 — — 5,436 11.9 % Other Mutual Funds - Fixed Income 1,446 — — 1,446 3.2 % Total Fixed Income Funds 6,882 — — 6,882 15.1 % 15.0 % 30.0 % Total $ 45,704 $ — $ — $ 45,704 100.0 % 1 Acquisition of Arrow Financial Corporation common stock was under 10% of the total fair value of the employee's pension plan assets at the time of acquisition. 2 The North Country Funds - Equity and the North Country Funds - Fixed Income are publicly traded mutual funds advised by Arrow's subsidiary, North Country Investment Advisers, Inc. Schedule of Defined Benefit Plan Disclosures Employees' Pension Plan Select Executive Retirement Plan Postretirement Benefit Plans Expected Future Benefit Payments 2016 $ 2,264 $ 443 $ 539 2017 2,254 433 523 2018 2,195 422 545 2019 2,353 410 568 2020 2,566 397 566 2021 - 2025 13,477 1,814 2,944 Estimated Contributions During 2016 $ — $ 443 $ 539 Assumed Health Care Cost Trend Rates December 31, 2015 Health Care Cost Trend Rate Assumed for Next Year 7.75 % Rate to which the Cost Trend Rate is Assumed to Decline (the Ultimate Trend Rate) 3.89 % Year that the Rate Reaches the Ultimate Trend Rate 2075 December 31, 2014 Health Care Cost Trend Rate Assumed for Next Year 8.00 % Rate to which the Cost Trend Rate is Assumed to Decline (the Ultimate Trend Rate) 3.89 % Year that the Rate Reaches the Ultimate Trend Rate 2075 Effect of a One-Percentage Point Change in Assumed Health Care Cost Trend Rates Effect of a One Percentage Point Increase on Service and Interest Cost Components $ 73 Effect of a One Percentage Point Decrease on Service and Interest Cost Components (61 ) Effect of a One Percentage Point Increase on Accumulated Postretirement Benefit Obligation 541 Effect of a One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation (466 )

Other Expenses (Tables)

Other Expenses (Tables)	12 Months Ended
	Dec. 31, 2015
Other Income and Expenses [Abstract]
Other Income and Other Expense Disclosure [Text Block]	Other operating expenses included in the consolidated statements of income are as follows: 2015 2014 2013 Computer Services $ 3,909 $ 3,659 $ 3,261 Legal and Other Professional Fees 2,188 1,836 1,823 Postage and Courier 1,050 1,084 1,046 Advertising and Promotion 965 886 879 Telephone and Communications 832 746 804 Stationery and Printing 796 851 905 Intangible Asset Amortization 327 387 452 All Other 3,846 3,531 3,486 Total Other Operating Expense $ 13,913 $ 12,980 $ 12,656

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	The provision for income taxes is summarized below: Current Tax Expense: 2015 2014 2013 Federal $ 8,570 $ 9,270 $ 7,933 State 860 1,203 852 Total Current Tax Expense 9,430 10,473 8,785 Deferred Tax Expense (Benefit): Federal 1,004 (315 ) 172 State 176 16 122 Total Deferred Tax Expense (Benefit) 1,180 (299 ) 294 Total Provision for Income Taxes $ 10,610 $ 10,174 $ 9,079
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	The provisions for income taxes differed from the amounts computed by applying the U.S. Federal Income Tax Rate of 35% for 2015 , 2014 and 2013 to pre-tax income as a result of the following: 2015 2014 2013 Computed Tax Expense at Statutory Rate $ 12,345 $ 11,737 $ 10,806 Increase (Decrease) in Income Taxes Resulting From: Tax-Exempt Income (2,292 ) (2,215 ) (2,238 ) Nondeductible Interest Expense 36 51 80 State Taxes, Net of Federal Income Tax Benefit 805 791 633 Other Items, Net (284 ) (190 ) (202 ) Total Provision for Income Taxes $ 10,610 $ 10,174 $ 9,079
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities at December 31, 2015 and 2014 are presented below: 2015 2014 Deferred Tax Assets: Allowance for Loan Losses $ 6,453 $ 6,113 Pension and Deferred Compensation Plans 3,973 3,885 Pension Liability Included in Accumulated Other Comprehensive Income 5,550 6,263 Other 557 614 Total Gross Deferred Tax Assets 16,533 16,875 Valuation Allowance for Deferred Tax Assets — — Total Gross Deferred Tax Assets, Net of Valuation Allowance $ 16,533 $ 16,875 Deferred Tax Liabilities: Pension Plans $ 8,680 $ 7,604 Depreciation 1,383 1,222 Deferred Income 4,167 3,927 Net Unrealized Gains on Securities Available-for-Sale Included in Accumulated Other Comprehensive Income 405 1,638 Goodwill 5,316 5,242 Total Gross Deferred Tax Liabilities $ 19,951 $ 19,633

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	The following table presents a reconciliation of the numerator and denominator used in the calculation of basic and diluted earnings per common share ("EPS") for each of the years in the three-year period ended December 31, 2015 . All share and per share amounts have been adjusted for the 2015 2% stock dividend. Earnings Per Share Year-to-Date Period Ended: 12/31/2015 12/31/2014 12/31/2013 Earnings Per Share - Basic: Net Income $ 24,662 $ 23,360 $ 21,795 Weighted Average Shares - Basic 12,894 12,856 12,793 Earnings Per Share - Basic $ 1.91 $ 1.82 $ 1.70 Earnings Per Share - Diluted: Net Income $ 24,662 $ 23,360 $ 21,795 Weighted Average Shares - Basic 12,894 12,856 12,793 Dilutive Average Shares Attributable to Stock Options 48 30 32 Weighted Average Shares - Diluted 12,942 12,886 12,825 Earnings Per Share - Diluted $ 1.91 $ 1.81 $ 1.70 Antidilutive Shares Excluded from the Calculation of Earnings Per Share — — 47

Fair Values (Tables)

Fair Values (Tables)	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
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) Total Gains (Losses) December 31, 2015 Securities Available-for Sale: U.S. Agency Obligations $ 155,782 $ — $ 155,782 $ — State and Municipal Obligations 52,408 — 52,408 — Mortgage-Backed Securities - Residential 178,588 — 178,588 — Corporate and Other Debt Securities 14,299 — 14,299 — Mutual Funds and Equity Securities 1,232 — 1,232 — Total Securities Available-for-Sale $ 402,309 $ — $ 402,309 $ — December 31, 2014 Securities Available-for Sale: U.S. Agency Obligations $ 137,603 $ — $ 137,603 $ — State and Municipal Obligations 81,730 — 81,730 — Mortgage-Backed Securities - Residential 128,827 — 128,827 — Corporate and Other Debt Securities 16,725 — 16,725 — Mutual Funds and Equity Securities 1,254 — 1,254 — Total Securities Available-for Sale $ 366,139 $ — $ 366,139 $ — Fair Value of Assets and Liabilities Measured on a Nonrecurring Basis: December 31, 2015 Collateral Dependent Impaired Loans $ — $ — $ — $ — $ — Other Real Estate Owned and Repossessed Assets, Net $ 2,018 $ — $ — $ 2,018 $ (687 ) December 31, 2014 Collateral Dependent Impaired Loans $ 574 $ — $ — $ 574 $ (109 ) Other Real Estate Owned and Repossessed Assets, Net $ 393 $ — $ — $ 393 $ (15 )
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, 2015 Cash and Cash Equivalents $ 51,068 $ 51,068 $ 51,068 $ — $ — Securities Available-for-Sale 402,309 402,309 — 402,309 — Securities Held-to-Maturity 320,611 325,930 — 325,930 — Federal Home Loan Bank and Federal Reserve Bank Stock 8,839 8,839 8,839 — — Net Loans 1,557,914 1,557,511 — — 1,557,511 Accrued Interest Receivable 6,360 6,360 6,360 — — Deposits 2,030,423 2,024,224 1,840,606 183,618 — Federal Funds Purchased and Securities Sold Under Agreements to Repurchase 23,173 19,421 19,421 — — Federal Home Loan Bank Term Advances 137,000 137,063 82,000 55,063 — Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts 20,000 20,000 — 20,000 — Accrued Interest Payable 231 231 231 — — December 31, 2014 Cash and Cash Equivalents $ 46,295 $ 46,295 $ 46,295 $ — $ — Securities Available-for-Sale 366,139 366,139 — 366,139 — Securities Held-to-Maturity 302,024 308,566 — 308,566 — Federal Home Loan Bank and Federal Reserve Bank Stock 4,851 4,851 4,851 — — Net Loans 1,397,698 1,405,454 — — 1,405,454 Accrued Interest Receivable 5,834 5,834 5,834 — — Deposits 1,902,948 1,899,682 1,697,105 202,577 — Federal Funds Purchased and Securities Sold Under Agreements to Repurchase 19,421 19,421 19,421 — — Federal Home Loan Bank Term Advances 51,000 51,258 41,000 10,258 — Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts 20,000 20,000 — 20,000 — Accrued Interest Payable 274 274 274 — —

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2015
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Schedule of Rent Expense [Table Text Block]	ental expense for the years ended December 31, 2015 , 2014 and 2013 was as follows: 2015 2014 2013 Net Rental Expense $ 862 $ 784 $ 671
Schedule of Future Minimum Rental Payments for Operationg Leases [Table Text Block]	Future minimum lease payments on operating leases at December 31, 2015 were as follows: Operating Leases 2016 $ 704 2017 517 2018 454 2019 333 2020 219 Later Years 468 Total Minimum Lease Payments $ 2,695

Regulatory Matters (Tables)

Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2015
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, 2015 and 2014 : Actual Minimum Amounts For Capital Adequacy Purposes Minimum Amounts To Be Well-Capitalized Amount Ratio Amount Ratio Amount Ratio As of December 31, 2015: Total Capital (to Risk Weighted Assets): Arrow $ 239,988 15.1 % $ 127,146 8.0 % $ 158,932 10.0 % Glens Falls National 193,302 15.0 % 103,094 8.0 % 128,868 10.0 % Saratoga National 37,658 12.6 % 23,910 8.0 % 29,887 10.0 % Tier I Capital (to Risk Weighted Assets): Arrow 223,899 14.1 % 95,276 6.0 % 127,035 8.0 % Glens Falls National 180,280 14.0 % 77,263 6.0 % 103,017 8.0 % Saratoga National 34,642 11.6 % 17,918 6.0 % 23,891 8.0 % Tier I Capital (to Average Assets): Arrow 223,899 9.3 % 96,301 4.0 % 120,376 5.0 % Glens Falls National 180,280 8.9 % 81,025 4.0 % 101,281 5.0 % Saratoga National 34,642 8.9 % 15,569 4.0 % 19,462 5.0 % Common Equity Tier 1 Capital (to Risk Weighted Assets): Arrow 203,848 12.8 % 71,665 4.5 % 103,517 6.5 % Glens Falls National 180,229 14.0 % 57,931 4.5 % 83,678 6.5 % Saratoga National 34,642 11.6 % 13,439 4.5 % 19,411 6.5 % 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 %

Parent Only Financial Informa47

Parent Only Financial Information (Tables)	12 Months Ended
	Dec. 31, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Schedule of Condensed Financial Statements [Table Text Block]	Condensed financial information for Arrow Financial Corporation is as follows: BALANCE SHEETS December 31, ASSETS 2015 2014 Interest-Bearing Deposits with Subsidiary Banks $ 3,441 $ 3,013 Available-for-Sale Securities 1,232 1,254 Held-to-Maturity Securities 1,000 1,000 Investment in Subsidiaries at Equity 225,934 214,813 Other Assets 7,390 6,538 Total Assets $ 238,997 $ 226,618 LIABILITIES Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts $ 20,000 $ 20,000 Other Liabilities 5,026 5,692 Total Liabilities 25,026 25,692 STOCKHOLDERS ’ EQUITY Total Stockholders ’ Equity 213,971 200,926 Total Liabilities and Stockholders ’ Equity $ 238,997 $ 226,618 STATEMENTS OF INCOME Years Ended December 31, Income: 2015 2014 2013 Dividends from Bank Subsidiaries $ 13,400 $ 13,300 $ 12,900 Interest and Dividends on Investments 118 116 116 Other Income (Including Management Fees) 847 578 549 Total Income 14,365 13,994 13,565 Expense: Interest Expense 619 620 640 Salaries and Employee Benefits 80 77 59 Other Expense 885 754 860 Total Expense 1,584 1,451 1,559 Income Before Income Tax Benefit and Equity in Undistributed Net Income of Subsidiaries 12,781 12,543 12,006 Income Tax Benefit 372 473 634 Equity in Undistributed Net Income of Subsidiaries 11,509 10,344 9,155 Net Income $ 24,662 $ 23,360 $ 21,795 The Statement of Changes in Stockholders ’ Equity is not reported because it is identical to the Consolidated Statement of Changes in Stockholders ’ Equity. STATEMENTS OF CASH FLOWS Years Ended December 31, 2015 2014 2013 Cash Flows from Operating Activities: Net Income $ 24,662 $ 23,360 $ 21,795 Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities: Undistributed Net Income of Subsidiaries (11,509 ) (10,344 ) (9,155 ) Shares Issued Under the Directors ’ Stock Plan 227 197 198 Stock-Based Compensation Expense 308 360 372 Changes in Other Assets and Other Liabilities (1,419 ) (1,014 ) (990 ) Net Cash Provided by Operating Activities 12,269 12,559 12,220 Cash Flows from Investing Activities: Proceeds from the Sale of Securities Available-for-Sale 47 45 45 Purchases of Securities Available-for-Sale (47 ) (45 ) (45 ) Net Cash (Used in) Provided by Investing Activities — — — Cash Flows from Financing Activities: Stock Options Exercised 918 1,454 1,254 Shares Issued Under the Employee Stock Purchase Plan 494 488 477 Shares Issued for Dividend Reinvestment Plans 886 — 1,280 Tax Benefit for Exercises of Stock Options 59 25 23 Purchase of Treasury Stock (1,498 ) (2,455 ) (1,709 ) Cash Dividends Paid (12,700 ) (12,407 ) (12,109 ) Net Cash Used in Financing Activities (11,841 ) (12,895 ) (10,784 ) Net (Decrease) Increase in Cash and Cash Equivalents 428 (336 ) 1,436 Cash and Cash Equivalents at Beginning of the Year 3,013 3,349 1,913 Cash and Cash Equivalents at End of the Year $ 3,441 $ 3,013 $ 3,349 Supplemental Disclosures to Statements of Cash Flow Information: Interest Paid $ 619 $ 620 $ 640 Non-cash Investing and Financing Activities: Shares Issued for Acquisition of Subsidiary — 91 233

Cash and Cash Equivalents (Deta

Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash and Cash Equivalents [Abstract]
Cash and Due from Banks	$ 34,816	$ 35,081
Interest-Bearing Deposits at Banks	16,252	11,214
Total Cash and Cash Equivalents	51,068	46,295	$ 49,980	$ 48,832
Total required reserves, including vault cash and Federal Reserve Bank deposits	$ 23,446	$ 19,989

Investment Securities Schedule

Investment Securities Schedule of Available for Sale Securities (Details) $ in Thousands	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	$ 401,278	$ 361,962
Available-for-sale Securities	402,309	366,139
Gross Unrealized Gains	2,717	4,636
Gross Unrealized Losses	1,686	459
Available-for-sale Securities, Pledged as Collateral	310,857	267,384
Maturities of Debt Securities, at Amortized Cost [Abstract]
Within One Year	43,027
From 1 - 5 Years	343,949
From 5 - 10 Years	11,582
Over 10 Years	1,600
Maturities of Debt Securities, at Fair Value [Abstract]
Within One Year	43,239
From 1 - 5 Years	344,429
From 5 - 10 Years	12,009
Over 10 Years	1,400
Securities in a Continuous Loss Position, at Fair Value [Abstract]
Less than 12 Months	184,276	43,022
12 Months of Longer	13,017	54,339
Total	$ 197,293	$ 97,361
Number of Securities in a Continuous Loss Position	89	105
Unrealized Losses on Securities in a Continuous Loss Position [Abstract]
Less than 12 Months	$ 1,440	$ 48
12 Months or Longer	246	411
Total	1,686	459
U.S. Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Gains	264	208
Gross Unrealized Losses	414	145
Maturities of Debt Securities, at Amortized Cost [Abstract]
Within One Year	0
From 1 - 5 Years	155,932
From 5 - 10 Years	0
Over 10 Years	0
Maturities of Debt Securities, at Fair Value [Abstract]
Within One Year	0
From 1 - 5 Years	155,782
From 5 - 10 Years	0
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value [Abstract]
Less than 12 Months	76,802	39,631
12 Months of Longer	0	28,020
Total	$ 76,802	$ 67,651
Number of Securities in a Continuous Loss Position	21	22
Unrealized Losses on Securities in a Continuous Loss Position [Abstract]
Less than 12 Months	$ 413	$ 48
12 Months or Longer	1	97
Total	414	145
U.S. Agency Obligations [Member] | Agency Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	155,932	137,540
Available-for-sale Securities	155,782	137,603
State and Municipal Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	52,306	81,582
Available-for-sale Securities	52,408	81,730
Gross Unrealized Gains	105	187
Gross Unrealized Losses	3	39
Maturities of Debt Securities, at Amortized Cost [Abstract]
Within One Year	23,954
From 1 - 5 Years	26,753
From 5 - 10 Years	999
Over 10 Years	600
Maturities of Debt Securities, at Fair Value [Abstract]
Within One Year	23,972
From 1 - 5 Years	26,837
From 5 - 10 Years	999
Over 10 Years	600
Securities in a Continuous Loss Position, at Fair Value [Abstract]
Less than 12 Months	4,289	3,309
12 Months of Longer	1,443	14,035
Total	$ 5,732	$ 17,344
Number of Securities in a Continuous Loss Position	19	65
Unrealized Losses on Securities in a Continuous Loss Position [Abstract]
Less than 12 Months	$ 2	$ 0
12 Months or Longer	1	39
Total	3	39
Mortgage-Backed Securities - Residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	177,376	124,732
Available-for-sale Securities	178,588	128,827
Gross Unrealized Gains	2,236	4,100
Gross Unrealized Losses	1,024	5
Maturities of Debt Securities, at Amortized Cost [Abstract]
Within One Year	13,460
From 1 - 5 Years	153,333
From 5 - 10 Years	10,583
Over 10 Years	0
Maturities of Debt Securities, at Fair Value [Abstract]
Within One Year	13,658
From 1 - 5 Years	153,920
From 5 - 10 Years	11,010
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value [Abstract]
Less than 12 Months	99,569	82
12 Months of Longer	903	1,546
Total	$ 100,472	$ 1,628
Number of Securities in a Continuous Loss Position	30	3
Unrealized Losses on Securities in a Continuous Loss Position [Abstract]
Less than 12 Months	$ 1,023	$ 0
12 Months or Longer	1	5
Total	1,024	5
Mortgage-Backed Securities - Residential [Member] | Agency Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	15,700	23,000
Available-for-sale Securities	15,800	23,600
Mortgage-Backed Securities - Residential [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	161,700	101,700
Available-for-sale Securities	162,700	105,200
Corporate and Other Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	14,544	16,988
Available-for-sale Securities	14,299	16,725
Gross Unrealized Gains	0	7
Gross Unrealized Losses	245	270
Maturities of Debt Securities, at Amortized Cost [Abstract]
Within One Year	5,613
From 1 - 5 Years	7,931
From 5 - 10 Years	0
Over 10 Years	1,000
Maturities of Debt Securities, at Fair Value [Abstract]
Within One Year	5,609
From 1 - 5 Years	7,890
From 5 - 10 Years	0
Over 10 Years	800
Securities in a Continuous Loss Position, at Fair Value [Abstract]
Less than 12 Months	3,616	0
12 Months of Longer	10,671	10,738
Total	$ 14,287	$ 10,738
Number of Securities in a Continuous Loss Position	19	15
Unrealized Losses on Securities in a Continuous Loss Position [Abstract]
Less than 12 Months	$ 2	$ 0
12 Months or Longer	243	270
Total	245	270
Mututal Funds and Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	1,120	1,120
Available-for-sale Securities	1,232	1,254
Gross Unrealized Gains	112	134
Gross Unrealized Losses	0	0
Maturities of Debt Securities, at Amortized Cost [Abstract]
Within One Year	0
From 1 - 5 Years	0
From 5 - 10 Years	0
Over 10 Years	0
Maturities of Debt Securities, at Fair Value [Abstract]
Within One Year	0
From 1 - 5 Years	0
From 5 - 10 Years	0
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value [Abstract]
Less than 12 Months	0	0
12 Months of Longer	0	0
Total	$ 0	$ 0
Number of Securities in a Continuous Loss Position	0	0
Unrealized Losses on Securities in a Continuous Loss Position [Abstract]
Less than 12 Months	$ 0	$ 0
12 Months or Longer	0	0
Total	$ 0	$ 0

Investment Securities Schedul50

Investment Securities Schedule of Held to Maturity Securities (Details) $ in Thousands	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity Securities	$ 320,611	$ 302,024
Held-to-maturity Securities, at Fair Value	325,930	308,566
Gross Unrealized Gains	5,487	6,705
Gross Unrealized Losses	168	163
Held-to-maturity Securities, Pledged as Collateral	299,767	282,640
Maturities of Debt Securities, at Amortized Cost [Abstract]
Within One Year	36,615
From 1 - 5 Years	152,564
From 5 - 10 Years	126,426
Over 10 Years	5,006
Maturities of Debt Securities, at Fair Value [Abstract]
Within One Year	36,695
From 1 - 5 Years	155,375
From 5 - 10 Years	128,767
Over 10 Years	5,093
Securities in a Continuous Loss Position, at Fair Value [Abstract]
Less than 12 Months	8,302	6,724
12 Months or Longer	15,918	16,033
Total	$ 24,220	$ 22,757
Number of Securities in a Continuous Loss Position	62	75
Unrealized Losses on Securities in a Continuous Loss Position [Abstract]
Less than 12 Months	$ 104	$ 25
12 Months or Longer	64	138
Total	168	163
State and Municipal Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity Securities	226,053	188,472
Held-to-maturity Securities, at Fair Value	230,621	193,252
Gross Unrealized Gains	4,619	4,935
Gross Unrealized Losses	51	155
Maturities of Debt Securities, at Amortized Cost [Abstract]
Within One Year	36,615
From 1 - 5 Years	91,014
From 5 - 10 Years	94,418
Over 10 Years	4,006
Maturities of Debt Securities, at Fair Value [Abstract]
Within One Year	36,695
From 1 - 5 Years	93,335
From 5 - 10 Years	96,498
Over 10 Years	4,093
Securities in a Continuous Loss Position, at Fair Value [Abstract]
Less than 12 Months	2,302	2,143
12 Months or Longer	11,764	16,033
Total	$ 14,066	$ 18,176
Number of Securities in a Continuous Loss Position	54	74
Unrealized Losses on Securities in a Continuous Loss Position [Abstract]
Less than 12 Months	$ 11	$ 17
12 Months or Longer	40	138
Total	51	155
Mortgage-Backed Securities - Residential [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity Securities	93,558	112,552
Held-to-maturity Securities, at Fair Value	94,309	114,314
Gross Unrealized Gains	868	1,770
Gross Unrealized Losses	117	8
Maturities of Debt Securities, at Amortized Cost [Abstract]
Within One Year	0
From 1 - 5 Years	61,550
From 5 - 10 Years	32,008
Over 10 Years	0
Maturities of Debt Securities, at Fair Value [Abstract]
Within One Year	0
From 1 - 5 Years	62,040
From 5 - 10 Years	32,269
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value [Abstract]
Less than 12 Months	6,000	4,581
12 Months or Longer	4,154	0
Total	$ 10,154	$ 4,581
Number of Securities in a Continuous Loss Position	8	1
Unrealized Losses on Securities in a Continuous Loss Position [Abstract]
Less than 12 Months	$ 93	$ 8
12 Months or Longer	24	0
Total	117	8
Mortgage-Backed Securities - Residential [Member] | Agency Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity Securities	3,800	4,400
Held-to-maturity Securities, at Fair Value	3,900	4,500
Mortgage-Backed Securities - Residential [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity Securities	89,800	108,100
Held-to-maturity Securities, at Fair Value	90,500	109,800
Corporate and Other Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity Securities	1,000	1,000
Held-to-maturity Securities, at Fair Value	1,000	1,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Maturities of Debt Securities, at Amortized Cost [Abstract]
Within One Year	0
From 1 - 5 Years	0
From 5 - 10 Years	0
Over 10 Years	1,000
Maturities of Debt Securities, at Fair Value [Abstract]
Within One Year	0
From 1 - 5 Years	0
From 5 - 10 Years	0
Over 10 Years	1,000
Securities in a Continuous Loss Position, at Fair Value [Abstract]
Less than 12 Months	0	0
12 Months or Longer	0	0
Total	$ 0	$ 0
Number of Securities in a Continuous Loss Position	0	0
Unrealized Losses on Securities in a Continuous Loss Position [Abstract]
Less than 12 Months	$ 0	$ 0
12 Months or Longer	0	0
Total	$ 0	$ 0

Investment Securities Cost-Meth

Investment Securities Cost-Method Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Investments, All Other Investments [Abstract]
Federal Reserve Bank Stock	$ 1,060	$ 1,048
Federal Home Loan Bank Stock	7,779	3,803
Federal Home Loan Bank and Federal Reserve Bank Stock	$ 8,839	$ 4,851

Loans Loan Categories and Past

Loans Loan Categories and Past Due Loans(Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due 30 - 59 Days	$ 5,651	$ 5,205
Loans Past Due 60 - 89 Days	3,203	2,881
Loans Past Due 90 or More Days	4,151	5,382
Total Loans Past Due	13,005	13,468
Current Loans	1,560,947	1,399,800
Total Loans	1,573,952	1,413,268
Loans 90 or More Days Past Due and Still Accruing Interest	187	537
Nonaccrual Loans	6,433	6,899
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due 30 - 59 Days	98	124
Loans Past Due 60 - 89 Days	186	154
Loans Past Due 90 or More Days	203	345
Total Loans Past Due	487	623
Current Loans	102,100	98,888
Total Loans	102,587	99,511
Loans 90 or More Days Past Due and Still Accruing Interest	0	0
Nonaccrual Loans	387	473
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due 30 - 59 Days	0	432
Loans Past Due 60 - 89 Days	0	7
Loans Past Due 90 or More Days	1,469	1,832
Total Loans Past Due	1,469	2,271
Current Loans	383,470	337,841
Total Loans	384,939	340,112
Loans 90 or More Days Past Due and Still Accruing Interest	0	0
Nonaccrual Loans	2,401	2,071
Other Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due 30 - 59 Days	4,598	4,167
Loans Past Due 60 - 89 Days	1,647	1,225
Loans Past Due 90 or More Days	295	206
Total Loans Past Due	6,540	5,598
Current Loans	457,983	431,443
Total Loans	464,523	437,041
Loans 90 or More Days Past Due and Still Accruing Interest	0	0
Nonaccrual Loans	450	415
Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due 30 - 59 Days	955	482
Loans Past Due 60 - 89 Days	1,370	1,495
Loans Past Due 90 or More Days	2,184	2,999
Total Loans Past Due	4,509	4,976
Current Loans	617,394	531,628
Total Loans	621,903	536,604
Loans 90 or More Days Past Due and Still Accruing Interest	187	537
Nonaccrual Loans	$ 3,195	$ 3,940

Loans Allowance for Loan Losses

Loans Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Rollfoward of the Allowance for Loan Losses for the Quarterly Report [Roll Forward]
Allowance for Credit Losses, Beginning Balance	$ 15,570	$ 14,434	$ 15,298
Charge-offs	(1,106)	(1,021)	(1,411)
Recoveries	227	309	347
Provision	1,347	1,848	200
Allowance for Credit Losses, Ending Balance	16,038	15,570	14,434
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for Loan Losses - Individually Evaluated for Impairment	0	109
Allowance for Loan Losses - Collectively Evaluated for Impairment	16,038	15,461
Ending Loan Balance - Individually Evaluated for Impairment	3,286	4,341
Ending Loan Balance - Collectively Evaluated for Impairment	1,570,666	1,408,927
Commercial [Member]
Rollfoward of the Allowance for Loan Losses for the Quarterly Report [Roll Forward]
Allowance for Credit Losses, Beginning Balance	2,100	1,886	2,344
Charge-offs	(62)	(212)	(926)
Recoveries	34	86	88
Provision	(245)	340	380
Allowance for Credit Losses, Ending Balance	1,827	2,100	1,886
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for Loan Losses - Individually Evaluated for Impairment	0	0
Allowance for Loan Losses - Collectively Evaluated for Impairment	1,827	2,100
Ending Loan Balance - Individually Evaluated for Impairment	155	494
Ending Loan Balance - Collectively Evaluated for Impairment	102,432	99,017
Commercial Real Estate [Member]
Rollfoward of the Allowance for Loan Losses for the Quarterly Report [Roll Forward]
Allowance for Credit Losses, Beginning Balance	4,128	3,962	3,651
Charge-offs	(7)	0	(11)
Recoveries	0	0	0
Provision	399	166	322
Allowance for Credit Losses, Ending Balance	4,520	4,128	3,962
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for Loan Losses - Individually Evaluated for Impairment	0	0
Allowance for Loan Losses - Collectively Evaluated for Impairment	4,520	4,128
Ending Loan Balance - Individually Evaluated for Impairment	2,372	1,492
Ending Loan Balance - Collectively Evaluated for Impairment	382,567	338,620
Other Consumer [Member]
Rollfoward of the Allowance for Loan Losses for the Quarterly Report [Roll Forward]
Allowance for Credit Losses, Beginning Balance	5,210	4,478	4,840
Charge-offs	(711)	(718)	(459)
Recoveries	193	223	259
Provision	862	1,227	(162)
Allowance for Credit Losses, Ending Balance	5,554	5,210	4,478
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for Loan Losses - Individually Evaluated for Impairment	0	0
Allowance for Loan Losses - Collectively Evaluated for Impairment	5,554	5,210
Ending Loan Balance - Individually Evaluated for Impairment	114	118
Ending Loan Balance - Collectively Evaluated for Impairment	464,409	436,923
Residential Portfolio Segment [Member]
Rollfoward of the Allowance for Loan Losses for the Quarterly Report [Roll Forward]
Allowance for Credit Losses, Beginning Balance	3,369	3,026	3,405
Charge-offs	(326)	(91)	(15)
Recoveries	0	0	0
Provision	747	434	(364)
Allowance for Credit Losses, Ending Balance	3,790	3,369	3,026
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for Loan Losses - Individually Evaluated for Impairment	0	109
Allowance for Loan Losses - Collectively Evaluated for Impairment	3,790	3,260
Ending Loan Balance - Individually Evaluated for Impairment	645	2,237
Ending Loan Balance - Collectively Evaluated for Impairment	621,258	534,367
Unallocated [Member]
Rollfoward of the Allowance for Loan Losses for the Quarterly Report [Roll Forward]
Allowance for Credit Losses, Beginning Balance	763	1,082	1,058
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	(416)	(319)	24
Allowance for Credit Losses, Ending Balance	347	763	$ 1,082
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for Loan Losses - Individually Evaluated for Impairment	0	0
Allowance for Loan Losses - Collectively Evaluated for Impairment	347	763
Ending Loan Balance - Individually Evaluated for Impairment	0	0
Ending Loan Balance - Collectively Evaluated for Impairment	$ 0	$ 0

Loans Loan Credit Quality Indic

Loans Loan Credit Quality Indicators (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Satisfactory [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	$ 454,261	$ 403,696
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	5,971	6,160
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	27,294	29,767
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0
Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	1,082,595	968,753
Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	3,831	4,892
Commercial [Member] | Satisfactory [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	93,607	85,949
Commercial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	1,070	2,442
Commercial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	7,910	11,120
Commercial [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0
Commercial Real Estate [Member] | Satisfactory [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	360,654	317,747
Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	4,901	3,718
Commercial Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	19,384	18,647
Commercial Real Estate [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0
Other Consumer [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	464,074	436,626
Other Consumer [Member] | Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	449	415
Residential Portfolio Segment [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	618,521	532,127
Residential Portfolio Segment [Member] | Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	$ 3,382	$ 4,477

Loans Impaired Loans (Details)

Loans Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Recorded Investment [Abstract]
With No Related Allowance	$ 3,286	$ 3,782
With a Related Allowance	0	559
Unpaid Principal Balance [Abstract]
With No Related Allowance	3,316	3,782
With a Related Allowance	0	559
Average Recorded Balance [Abstract]
With No Related Allowance	3,535	3,634	$ 4,178
With a Related Allowance	280	546	694
Interest Income Recognized [Abstract]
With No Related Allowance	23	19	21
With a Related Allowance	0	0	0
Cash Basis Income [Abstract]
With No Related Allowance	0	0	0
With a Related Allowance	0	0	0
Impaired Financing Receivable, Related Allowance	0
Commercial [Member]
Recorded Investment [Abstract]
With No Related Allowance	155	494
With a Related Allowance	0	0
Unpaid Principal Balance [Abstract]
With No Related Allowance	155	494
With a Related Allowance	0	0
Average Recorded Balance [Abstract]
With No Related Allowance	325	348	133
With a Related Allowance	0	0	694
Interest Income Recognized [Abstract]
With No Related Allowance	0	11	4
With a Related Allowance	0	0	0
Cash Basis Income [Abstract]
With No Related Allowance	0	0	0
With a Related Allowance	0	0	0
Impaired Financing Receivable, Related Allowance	0
Commercial Real Estate [Member]
Recorded Investment [Abstract]
With No Related Allowance	2,372	1,492
With a Related Allowance	0	0
Unpaid Principal Balance [Abstract]
With No Related Allowance	2,372	1,492
With a Related Allowance	0	0
Average Recorded Balance [Abstract]
With No Related Allowance	1,932	1,492	2,157
With a Related Allowance	0	0	0
Interest Income Recognized [Abstract]
With No Related Allowance	9	0	0
With a Related Allowance	0	0	0
Cash Basis Income [Abstract]
With No Related Allowance	0	0	0
With a Related Allowance	0	0	0
Impaired Financing Receivable, Related Allowance	0
Other Consumer [Member]
Recorded Investment [Abstract]
With No Related Allowance	114	118
With a Related Allowance	0	0
Unpaid Principal Balance [Abstract]
With No Related Allowance	144	118
With a Related Allowance	0	0
Average Recorded Balance [Abstract]
With No Related Allowance	116	121	188
With a Related Allowance	0	0	0
Interest Income Recognized [Abstract]
With No Related Allowance	14	7	9
With a Related Allowance	0	0	0
Cash Basis Income [Abstract]
With No Related Allowance	0	0	0
With a Related Allowance	0	0	0
Impaired Financing Receivable, Related Allowance	0
Residential Portfolio Segment [Member]
Recorded Investment [Abstract]
With No Related Allowance	645	1,678
With a Related Allowance	0	559
Unpaid Principal Balance [Abstract]
With No Related Allowance	645	1,678
With a Related Allowance	0	559
Average Recorded Balance [Abstract]
With No Related Allowance	1,162	1,673	1,700
With a Related Allowance	280	546	0
Interest Income Recognized [Abstract]
With No Related Allowance	0	1	8
With a Related Allowance	0	0	0
Cash Basis Income [Abstract]
With No Related Allowance	0	0	0
With a Related Allowance	0	$ 0	$ 0
Impaired Financing Receivable, Related Allowance	$ 0

Loans Loans Modified in Trouble

Loans Loans Modified in Trouble Debt Restructurings (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Financing Receivable, Modifications [Line Items]
Number of Loans	5	5	10
Pre-Modification Outstanding Recorded Investment	$ 934	$ 610	$ 257
Post-Modification Outstanding Recorded Investment	$ 934	$ 610	$ 288
Subsequent Default, Number of Contracts	0	0	0
Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0
Commitments to lend additional funds to modified loans	$ 0	$ 0	$ 0
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	0	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 169
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 200
Subsequent Default, Number of Contracts	0	0	0
Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0
Commitments to lend additional funds to modified loans	$ 0	$ 0	$ 0
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	1	0	0
Pre-Modification Outstanding Recorded Investment	$ 883	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 883	$ 0	$ 0
Subsequent Default, Number of Contracts	0	0	0
Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0
Commitments to lend additional funds to modified loans	$ 0	$ 0	$ 0
Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	4	4	9
Pre-Modification Outstanding Recorded Investment	$ 51	$ 36	$ 88
Post-Modification Outstanding Recorded Investment	$ 51	$ 36	$ 88
Subsequent Default, Number of Contracts	0	0	0
Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0
Commitments to lend additional funds to modified loans	$ 0	$ 0	$ 0
Residential Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	0	1	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 574	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 574	$ 0
Subsequent Default, Number of Contracts	0	0	0
Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0
Commitments to lend additional funds to modified loans	$ 0	$ 0	$ 0

Loans Supplemental Loan Informa

Loans Supplemental Loan Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Loans and Leases Receivable, Related Parties Disclosure [Abstract]
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums	$ 3,268	$ 2,771
Deposit Liabilities Reclassified as Loans Receivable	477	973
Loans Pledged as Collateral	396,956	313,355
Residential Real Estate Loans Serviced for Freddie Mac	153,795	158,598
Disposal Group, Including Discontinued Operation, Mortgage Loans	298	398
Loans to Related Parties [Roll Forward]
Balance at beginning of year	6,003	7,769
Adjustment due to change in composition of related parties	2,610	0
New loans and renewals, during the year	2,770	694
Repayments, during the year	(1,788)	(2,460)
Balance at end of year	$ 9,595	$ 6,003

Premises and Equipment (Details

Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Total Cost	$ 58,949	$ 58,283
Accumulated Depreciation and Amortization	(31,509)	(29,795)
Net Premises and Equipment	27,440	28,488
Land and Bank Premises [Member]
Property, Plant and Equipment [Line Items]
Total Cost	34,609	35,062
Equipment, Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total Cost	22,879	22,003
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total Cost	$ 1,461	$ 1,218

Premises and Equipment Suppleme

Premises and Equipment Supplemental Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Abstract]
Depreciation	$ 1,892	$ 1,879	$ 1,928

Other Intangible Assets Schedul

Other Intangible Assets Schedule of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount					$ 8,451	$ 8,413
Accumulated Amortization					(5,344)	(4,788)
Net Carrying Amount		$ 3,625	$ 4,140	$ 4,492	3,107	3,625
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Beginning Balance		3,625	4,140	4,492
Intangible Assets Acquired		107	133	331
Impairment of Intangible Assets, Finite-lived		(38)
Amortization of Intangible Assets		(587)	(648)	(683)
Finite-Lived Intangible Assets, Ending Balance		3,107	3,625	4,140
Depositor Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	[1]				2,247	2,247
Accumulated Amortization	[1]				(2,247)	(2,237)
Net Carrying Amount	[1]	10	61	153	0	10
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Beginning Balance	[1]	10	61	153
Intangible Assets Acquired	[1]	0	0	0
Impairment of Intangible Assets, Finite-lived		0
Amortization of Intangible Assets	[1]	(10)	(51)	(92)
Finite-Lived Intangible Assets, Ending Balance	[1]	0	10	61
Mortgage Servicing Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	[2]				1,822	1,715
Accumulated Amortization	[2]				(1,143)	(883)
Net Carrying Amount	[2]	832	960	859	679	832
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Beginning Balance	[2]	832	960	859
Intangible Assets Acquired	[2]	107	133	331
Impairment of Intangible Assets, Finite-lived	[2]	0
Amortization of Intangible Assets	[2]	(260)	(261)	(230)
Finite-Lived Intangible Assets, Ending Balance	[2]	679	832	960
Customer Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	[1]				4,382	4,451
Accumulated Amortization	[1]				(1,954)	(1,668)
Net Carrying Amount	[1]	2,783	3,119	3,480	$ 2,428	$ 2,783
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Beginning Balance	[1]	2,783	3,119	3,480
Intangible Assets Acquired	[1]	0	0	0
Impairment of Intangible Assets, Finite-lived	[1]	(38)
Amortization of Intangible Assets	[1]	(317)	(336)	(361)
Finite-Lived Intangible Assets, Ending Balance	[1]	$ 2,428	$ 2,783	$ 3,119
[1]	Amortization of depositor intangibles and customer intangibles are reported in the consolidated statements of income as a component of other operating expense.
[2]	Amortization of mortgage servicing rights is reported in the consolidated statements of income as a reduction of mortgage servicing fee income, which is included with fees for other services to customers.

Other Intangible Assets Sched61

Other Intangible Assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Details) - USD ($) $ in Thousands		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Estimated Annual Amoritzation Expense: [Abstract]
2,016		$ 543
2,017		463
2,018		392
2,019		301
2,020		257
Later Years		1,151
Net Carrying Amount		3,107	$ 3,625	$ 4,140	$ 4,492
Mortgage Servicing Rights [Member]
Estimated Annual Amoritzation Expense: [Abstract]
2,016	[1]	250
2,017	[1]	190
2,018	[1]	136
2,019	[1]	62
2,020	[1]	31
Later Years	[1]	10
Net Carrying Amount	[1]	679	832	960	859
Customer Intangibles [Member]
Estimated Annual Amoritzation Expense: [Abstract]
2,016	[2]	293
2,017	[2]	273
2,018	[2]	256
2,019	[2]	239
2,020	[2]	226
Later Years	[2]	1,141
Net Carrying Amount	[2]	$ 2,428	$ 2,783	$ 3,119	$ 3,480
[1]	Amortization of mortgage servicing rights is reported in the consolidated statements of income as a reduction of mortgage servicing fee income, which is included with fees for other services to customers.
[2]	Amortization of depositor intangibles and customer intangibles are reported in the consolidated statements of income as a component of other operating expense.

Guarantees (Details)

Guarantees (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Guarantees [Abstract]
Commitments to Extend Credit, Nominal Amount	$ 278,623	$ 249,803
Standby Letters of Credit, Nominal Amount	3,065	3,317
Commitments to Extend Credit, Fair Value	0	0
Fair Value Disclosure, Letters of Credit Outstanding, Amount	$ 2	$ 39

Time Deposits (Details)

Time Deposits (Details) $ in Thousands	Dec. 31, 2015USD ($)
Year of Maturity
2,016	$ 110,935
2,017	29,008
2,018	16,440
2,019	16,743
2,020	8,731
2021 and Beyond	7,960
Total	$ 189,817

Debt Schedule of Short Term Deb

Debt Schedule of Short Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Short-term Debt [Line Items]
Short-term Borrowings	$ 105,173	$ 60,421
Overnight Advances from the Federal Home Loan Bank of New York [Member]
Short-term Debt [Line Items]
Short-term Borrowings	82,000	41,000
Maximum Borrowing Capacity	396,956	278,886
Securities Sold under Agreements to Repurchase [Member]
Short-term Debt [Line Items]
Short-term Borrowings	23,173	19,421
Federal Funds Purchased [Member]
Short-term Debt [Line Items]
Maximum Borrowing Capacity	35,000	35,000
Federal Reserve Bank of New York [Member]
Short-term Debt [Line Items]
Maximum Borrowing Capacity	$ 319,623	$ 307,159

Debt Maturities of Long Term De

Debt Maturities of Long Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Long-term Debt, Fiscal Year Maturity [Abstract]
Final Maturity Balances - First Year	$ 0	$ 10,000
Final Maturity Balances - Second Year	0	0
Final Maturity Balances - Third Year	10,000	0
Long-term Debt, Maturities, Repayments of Principal in Year Four	20,000	0
Long-term Debt, Maturities, Repayments of Principal in Year Five	25,000	0
Final Maturity Balances - Total	$ 55,000	$ 10,000
Final Maturity Weighted Average Rate - First Year	0.00%	3.88%
Final Maturity Weighted Average Rate - Second Year	0.00%	0.00%
Final Maturity Weighted Average Rate - Third Year	1.50%	0.00%
Long-Term Debt Maturities, Weighted Average Rate, Repayments of Principal in Year Four	1.70%	0.00%
Long-Term Debt Maturities, Weighted Average Rate, Repayments of Principal in Year Five	2.02%	0.00%
Final Maturity Weighted Average Rate - Total	1.81%	3.88%

Debt Schedule of Long-term Debt

Debt Schedule of Long-term Debt instruments (Details) - Junior Subordinated Debt [Member] - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
ACST II [Member]
Debt Instrument [Line Items]
Balance at December 31,	$ 10,000	$ 10,000
Period-End Interest Rate	3.48%	3.38%
ACST III [Member]
Debt Instrument [Line Items]
Balance at December 31,	$ 10,000
Period-End Interest Rate	2.33%	2.23%

Comprehensive Income Other Comp

Comprehensive Income Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	$ (1,208)	$ (2,961)	$ 3,500
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	402	168	589
Other Comprehensive Income (Loss), before Tax	(1,329)	(4,547)	6,772
Other Comprehensive Income (Loss), Tax	523	1,754	(2,683)
Other Comprehensive (Loss) Income	(806)	(2,793)	4,089
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Schedule of Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(3,017)	356	(4,843)
Other Comprehensive Income Loss Before Reclassifications Tax (Expense) Benefit	1,185	(124)	1,918
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(1,832)	232	(2,925)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	(129)	(110)	(540)
Reclassification From Accumulated Other Comprehensive Income Current Period Tax (Expense) Benefit	51	43	214
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(78)	(67)	(326)
Other Comprehensive (Loss) Income	(1,910)	165	(3,251)
Accumulated Defined Benefit Plans Adjustment, Net Unamortized Gain (Loss) [Member]
Schedule of Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, before Tax	1,395	(4,610)	10,640
Other Comprehensive Income Loss Before Reclassifications Tax (Expense) Benefit	(547)	1,764	(4,215)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	848	(2,846)	6,425
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	846	474	1,513
Reclassification From Accumulated Other Comprehensive Income Current Period Tax (Expense) Benefit	(332)	(186)	(599)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	514	288	914
Other Comprehensive (Loss) Income	1,362	(2,558)	7,339
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Cost (Credit) [Member]
Schedule of Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(368)		0
Other Comprehensive Income Loss Before Reclassifications Tax (Expense) Benefit	144		0
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(224)	(347)	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	(56)	(87)	2
Reclassification From Accumulated Other Comprehensive Income Current Period Tax (Expense) Benefit	22	34	(1)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(34)	(53)	1
Other Comprehensive (Loss) Income	$ (258)	$ (400)	$ 1

Comprehensive Income Changes in

Comprehensive Income Changes in Accumulated Other Comprehensive Income By Componenet (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning Balance	$ (7,166)	$ (4,373)	$ 8,462
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(1,208)	(2,961)	3,500
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	402	168	589
Other Comprehensive (Loss) Income	(806)	(2,793)	4,089
Accumulated Other Comprehensive Income (Loss), Net of Tax	(7,972)	(7,166)	(4,373)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning Balance	2,539	2,374	5,625
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(1,832)	232	(2,925)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(78)	(67)	(326)
Other Comprehensive (Loss) Income	(1,910)	165	(3,251)
Accumulated Other Comprehensive Income (Loss), Net of Tax	629	2,539	2,374
Accumulated Defined Benefit Plans Adjustment, Net Unamortized Gain (Loss) [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning Balance	(9,255)	(6,697)	(14,036)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	848	(2,846)	6,425
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	514	288	914
Other Comprehensive (Loss) Income	1,362	(2,558)	7,339
Accumulated Other Comprehensive Income (Loss), Net of Tax	(7,893)	(9,255)	(6,697)
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Cost (Credit) [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning Balance	(450)	(50)	(51)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(224)	(347)	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(34)	(53)	1
Other Comprehensive (Loss) Income	(258)	(400)	1
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (708)	$ (450)	$ (50)

Comprehensive Income Reclassifi

Comprehensive Income Reclassification Out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for Income Taxes	$ 10,610	$ 10,174	$ 9,079
Net Income (Loss) Available to Common Stockholders, Basic	(402)	(168)	(589)
Accumulated Net Unrealized Investment Gain (Loss) [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax	129	110	540
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest	129	110	540
Provision for Income Taxes	(51)	(43)	(214)
Net Income (Loss) Available to Common Stockholders, Basic	78	67	326
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), before Tax	56	87	(2)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax	(846)	(474)	(1,513)
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest	(790)	(387)	(1,515)
Provision for Income Taxes	310	152	600
Net Income (Loss) Available to Common Stockholders, Basic	$ (480)	$ (235)	$ (915)

Stock Based Compensation Roll F

Stock Based Compensation Roll Forward Schedule of Stock Option Plan by Shares and Weighted Average Exercise Prices (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Roll Forward of Shares Outstanding [Roll Forward]
Outstanding, Beginning Balance, in shares	409,471
Granted, in shares	55,590	75,518	10,404
Exercised, in shares	(43,589)
Forfeited, in shares	(11,990)
Outstanding, Ending Balance, in shares	409,482	409,471
Exercisable at December 31, 2014, in shares	275,401
Vested and Expected to Vest, in shares	134,081
Roll Forward of Shares Outstanding - Weighted Average Exercise Price: [Roll Forward]
Outstanding, Beginning Balance, in Weighted Average Exercise Price,	$ 22.04
Granted, in Weighted Average Exercise Price	25.35
Exercised, in Weighted Average Exercise Price	21.04
Forfeited, in Weighted Average Exercise Price	23.23
Outstanding, Ending Balance, in Weighted Average Exercise Price,	22.59	$ 22.04
Exercisable at December 31, 2014, in Weighted Average Exercise Price	21.68
Vested and Expected to Vest, in Weighted Average Exercise Price	$ 24.47
Outstanding at December 31, 2014, Weighted Average Remaining Contractual Life, in years	5 years 8 months 20 days
Exercisable at December 31, 2014, Weighted Average Remaining Contractual Life, in years	4 years 6 months 8 days
Vested and Expected to Vest, Weighted Average Remaining Contractual Life, in years	8 years 2 months 8 days
Outstanding at December 31, 2014, Aggregate Intrinsic Value	$ 1,875
Exercisable at December 31, 2014, Aggregate Intrinsic Value	1,512
Vested and Expected to Vest, Aggregate Intrinsic Value	$ 363
Shares Available for Grant at Period End, in shares	401,000

Stock Based Compensation Schedu

Stock Based Compensation Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range (Details)	12 Months Ended
	Dec. 31, 2015$ / sharesshares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Shares Outstanding, Outstanding Options, in shares | shares	409,482
Weighted-Average Remaining Contractual Life, Outstanding Options, in years	5 years 8 months 19 days
Weighted Average Exercise Price, Outstanding Options, in Weighted Average Exercise Price | $ / shares	$ 22.59
Number of Shares Outstanding, Exercisable Options, in shares | shares	275,401
Weighted-Average Remaining Contractual Life, Exercisable Options, in years	4 years 6 months 7 days
Weighted-Average Exercise Price, Exercisable Options, in Weighted Average Exercise Price | $ / shares	$ 21.68
Exercise Price Range $18.71 to $19.48 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Shares Outstanding, Outstanding Options, in shares | shares	65,112
Weighted-Average Remaining Contractual Life, Outstanding Options, in years	2 years 8 months 27 days
Weighted Average Exercise Price, Outstanding Options, in Weighted Average Exercise Price | $ / shares	$ 18.89
Number of Shares Outstanding, Exercisable Options, in shares | shares	65,112
Weighted-Average Remaining Contractual Life, Exercisable Options, in years	2 years 8 months 27 days
Weighted-Average Exercise Price, Exercisable Options, in Weighted Average Exercise Price | $ / shares	$ 18.89
Exercise Price Range $20.82 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Shares Outstanding, Outstanding Options, in shares | shares	13,150
Weighted-Average Remaining Contractual Life, Outstanding Options, in years	11 months 1 day
Weighted Average Exercise Price, Outstanding Options, in Weighted Average Exercise Price | $ / shares	$ 20.41
Number of Shares Outstanding, Exercisable Options, in shares | shares	13,150
Weighted-Average Remaining Contractual Life, Exercisable Options, in years	11 months 1 day
Weighted-Average Exercise Price, Exercisable Options, in Weighted Average Exercise Price | $ / shares	$ 20.41
Exercise Price Range $21.83 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Shares Outstanding, Outstanding Options, in shares | shares	134,458
Weighted-Average Remaining Contractual Life, Outstanding Options, in years	4 years 9 months 11 days
Weighted Average Exercise Price, Outstanding Options, in Weighted Average Exercise Price | $ / shares	$ 22.21
Number of Shares Outstanding, Exercisable Options, in shares | shares	129,679
Weighted-Average Remaining Contractual Life, Exercisable Options, in years	4 years 8 months 9 days
Weighted-Average Exercise Price, Exercisable Options, in Weighted Average Exercise Price | $ / shares	$ 22.19
Exercise Price Range $23.30 to $23.95 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Shares Outstanding, Outstanding Options, in shares | shares	67,565
Weighted-Average Remaining Contractual Life, Outstanding Options, in years	6 years 26 days
Weighted Average Exercise Price, Outstanding Options, in Weighted Average Exercise Price | $ / shares	$ 23.48
Number of Shares Outstanding, Exercisable Options, in shares | shares	49,747
Weighted-Average Remaining Contractual Life, Exercisable Options, in years	6 years 26 days
Weighted-Average Exercise Price, Exercisable Options, in Weighted Average Exercise Price | $ / shares	$ 23.48
Exercise Price Range $24.51 to $25.27 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Shares Outstanding, Outstanding Options, in shares | shares	129,197
Weighted-Average Remaining Contractual Life, Outstanding Options, in years	8 years 6 months 4 days
Weighted Average Exercise Price, Outstanding Options, in Weighted Average Exercise Price | $ / shares	$ 24.60
Number of Shares Outstanding, Exercisable Options, in shares | shares	17,713
Weighted-Average Remaining Contractual Life, Exercisable Options, in years	8 years 29 days
Weighted-Average Exercise Price, Exercisable Options, in Weighted Average Exercise Price | $ / shares	$ 24.03

Stock Based Compensation Sche72

Stock Based Compensation Schedule of Other Stock Option Plan Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Granted, in shares	55,590	75,518	10,404
Fair Value of Options Granted, Weighted Average Grant Date, in dollars per share	$ 5.67	$ 5.80	$ 5.25
Dividend Yield	3.90%	3.97%	4.20%
Expected Volatility	33.55%	35.30%	36.57%
Risk Free Interest Rate	1.57%	2.19%	1.31%
Expected Life, in years	7 years 7 months 28 days	6 years 10 months 6 days	6 years 8 months 15 days
Stock-Based Compensation Expense	$ 308	$ 360	$ 372
Compensation Costs for Non-vested Awards Not Yet Recognized	$ 500	$ 478	$ 420
Weighted Average Expected Vesting Period, In Years	2 years 1 month 15 days	1 year 8 months 5 days	1 year 5 months 13 days
Proceeds From Stock Options Exercised	$ 917	$ 1,454	$ 1,254
Tax Benefit for Disposition of Stock Options	59	25	23
Intrinsic Value of Stock Options Exercised	$ 250	$ 170	$ 267

Stock Based Compensation Sche73

Stock Based Compensation Schedule of Employee Stock Ownership Plans (ESOP) Disclosure (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Employee Stock Ownership Plan (ESOP), Shares in ESOP [Abstract]
ESOP Compensation Expense	$ 900	$ 800	$ 600
Allocated Shares, in shares	684,016
Shares Released for Allocation During 2012, in shares	17,645
Unallocated Shares, in shares	55,275
Total ESOP Shares, in shares	756,936
Market Value of Unallocated ESOP Shares	$ 1,502

Retirement Benefit Plans (Detai

Retirement Benefit Plans (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015		Dec. 31, 2014
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		$ 45,704	$ 45,704		$ 47,234		$ 45,704
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		45,704
Fair Value of Plan Assets, End of Period		47,234	45,704
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		$ 45,704	$ 45,704		$ 47,234		$ 45,704
Percent of Total					100.00%		100.00%
Expected Future Benefit Payments [Abstract]
Health Care Cost Trend Rate Assumed for Next Year		7.75%	8.00%
Rate to which the Cost Trend Rate is Assumed to Decline (the Ultimate Trend Rate)		3.89%	3.89%
Year that the Rate Reaches the Ultimate Trend Rate					2,075		2,075
Effect of One Percentage Point Increase on Service and Interest Cost Components		$ 73
Effect of One Percentage Point Decrease on Service and Interest Cost Components		61
Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation		541
Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation		466
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		45,704	$ 45,704		$ 47,234		$ 45,704
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		45,704
Fair Value of Plan Assets, End of Period		47,234	45,704
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		45,704	45,704		47,234		45,704
Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		0
Fair Value of Plan Assets, End of Period		0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		0	0		0		0
Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		0
Fair Value of Plan Assets, End of Period		0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		0	0		0		0
Cash and Cash Equivalents [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		20	20		44		20
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		20
Fair Value of Plan Assets, End of Period		44	20
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		$ 20	$ 20		$ 44		$ 20
Percent of Total					0.10%		0.00%
Target Allocation Minimum, Percentage		0.00%	0.00%
Target Allocation Maximum, Percentage		15.00%	15.00%
Cash and Cash Equivalents [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		$ 20	$ 20		$ 44		$ 20
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		20
Fair Value of Plan Assets, End of Period		44	20
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		20	20		44		20
Cash and Cash Equivalents [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		0
Fair Value of Plan Assets, End of Period		0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		0	0		0		0
Cash and Cash Equivalents [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		0
Fair Value of Plan Assets, End of Period		0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		0	0		0		0
Money Market Funds [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		4,322	4,322		2,471		4,322
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		4,322
Fair Value of Plan Assets, End of Period		2,471	4,322
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		$ 4,322	$ 4,322		$ 2,471		$ 4,322
Percent of Total					5.20%		9.50%
Target Allocation Minimum, Percentage		0.00%	0.00%
Target Allocation Maximum, Percentage		15.00%	15.00%
Money Market Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		$ 4,322	$ 4,322		$ 2,471		$ 4,322
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		4,322
Fair Value of Plan Assets, End of Period		2,471	4,322
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		4,322	4,322		2,471		4,322
Money Market Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		0
Fair Value of Plan Assets, End of Period		0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		0	0		0		0
Money Market Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		0
Fair Value of Plan Assets, End of Period		0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		0	0		0		0
Common Stock
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		4,551	4,551		4,554		4,551
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		4,551
Fair Value of Plan Assets, End of Period		4,554	4,551
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		$ 4,551	$ 4,551		$ 4,554		$ 4,551
Percent of Total					9.60%	[1]	10.00%
Target Allocation Minimum, Percentage		0.00%	0.00%
Target Allocation Maximum, Percentage		10.00%	10.00%
Common Stock | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		$ 4,551	$ 4,551		$ 4,554		$ 4,551
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		4,551
Fair Value of Plan Assets, End of Period		4,554	4,551
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		4,551	4,551		4,554		4,551
Common Stock | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		0
Fair Value of Plan Assets, End of Period		0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		0	0		0		0
Common Stock | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		0
Fair Value of Plan Assets, End of Period		0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		0	0		0		0
Equity Funds [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		29,929	29,929		32,819		29,929
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		29,929
Fair Value of Plan Assets, End of Period		32,819	29,929
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		$ 29,929	$ 29,929		$ 32,819		$ 29,929
Percent of Total					69.50%		65.40%
Target Allocation Minimum, Percentage		55.00%	66.00%
Target Allocation Maximum, Percentage		85.00%	85.00%
Equity Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		$ 29,929	$ 29,929		$ 32,819		$ 29,929
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		29,929
Fair Value of Plan Assets, End of Period		32,819	29,929
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		29,929	29,929		32,819		29,929
Equity Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		0
Fair Value of Plan Assets, End of Period		0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		0	0		0		0
Equity Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		0
Fair Value of Plan Assets, End of Period		0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		0	0		0		0
Equity Funds [Member] | North Country Funds - Equity [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets	[2]	18,975	18,975		19,625		18,975
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period	[2]	18,975
Fair Value of Plan Assets, End of Period	[2]	19,625	18,975
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets	[2]	$ 18,975	$ 18,975		$ 19,625		$ 18,975
Percent of Total	[2]				41.60%		41.40%
Target Allocation Minimum, Percentage
Target Allocation Maximum, Percentage
Equity Funds [Member] | North Country Funds - Equity [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets	[2]	$ 18,975	$ 18,975		$ 19,625		$ 18,975
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period	[2]	18,975
Fair Value of Plan Assets, End of Period	[2]	19,625	18,975
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets	[2]	18,975	18,975		19,625		18,975
Equity Funds [Member] | North Country Funds - Equity [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets	[2]	0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period	[2]	0
Fair Value of Plan Assets, End of Period	[2]	0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets	[2]	0	0		0		0
Equity Funds [Member] | North Country Funds - Equity [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets	[2]	0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period	[2]	0
Fair Value of Plan Assets, End of Period	[2]	0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets	[2]	0	0		0		0
Equity Funds [Member] | Other Mutual Funds - Equity [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		10,954	10,954		13,194		10,954
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		10,954
Fair Value of Plan Assets, End of Period		13,194	10,954
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		$ 10,954	$ 10,954		$ 13,194		$ 10,954
Percent of Total					27.90%		24.00%
Target Allocation Minimum, Percentage
Target Allocation Maximum, Percentage
Equity Funds [Member] | Other Mutual Funds - Equity [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		$ 10,954	$ 10,954		$ 13,194		$ 10,954
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		10,954
Fair Value of Plan Assets, End of Period		13,194	10,954
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		10,954	10,954		13,194		10,954
Equity Funds [Member] | Other Mutual Funds - Equity [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		0
Fair Value of Plan Assets, End of Period		0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		0	0		0		0
Equity Funds [Member] | Other Mutual Funds - Equity [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		0
Fair Value of Plan Assets, End of Period		0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		0	0		0		0
Fixed Income Funds [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		6,882	6,882		7,346		6,882
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		6,882
Fair Value of Plan Assets, End of Period		7,346	6,882
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		$ 6,882	$ 6,882		$ 7,346		$ 6,882
Percent of Total					15.60%		15.10%
Target Allocation Minimum, Percentage		15.00%	15.00%
Target Allocation Maximum, Percentage		30.00%	30.00%
Fixed Income Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		$ 6,882	$ 6,882		$ 7,346		$ 6,882
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		6,882
Fair Value of Plan Assets, End of Period		7,346	6,882
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		6,882	6,882		7,346		6,882
Fixed Income Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		0
Fair Value of Plan Assets, End of Period		0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		0	0		0		0
Fixed Income Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		0
Fair Value of Plan Assets, End of Period		0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		0	0		0		0
Fixed Income Funds [Member] | North Country Funds - Fixed Income [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets	[2]	5,436	5,436		7,346		5,436
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period	[2]	5,436
Fair Value of Plan Assets, End of Period	[2]	7,346	5,436
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets	[2]	$ 5,436	$ 5,436		$ 7,346		$ 5,436
Percent of Total	[2]				15.60%		11.90%
Target Allocation Minimum, Percentage
Target Allocation Maximum, Percentage
Fixed Income Funds [Member] | North Country Funds - Fixed Income [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets	[2]	$ 5,436	$ 5,436		$ 7,346		$ 5,436
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period	[2]	5,436
Fair Value of Plan Assets, End of Period	[2]	7,346	5,436
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets	[2]	5,436	5,436		7,346		5,436
Fixed Income Funds [Member] | North Country Funds - Fixed Income [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets	[2]	0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period	[2]	0
Fair Value of Plan Assets, End of Period	[2]	0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets	[2]	0	0		0		0
Fixed Income Funds [Member] | North Country Funds - Fixed Income [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets	[2]	0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period	[2]	0
Fair Value of Plan Assets, End of Period	[2]	0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets	[2]	0	0		0		0
Fixed Income Funds [Member] | Other Mutual Funds - Fixed Income [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		1,446	1,446		0		1,446
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		1,446
Fair Value of Plan Assets, End of Period		0	1,446
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		$ 1,446	$ 1,446		$ 0		$ 1,446
Percent of Total					0.00%		3.20%
Target Allocation Minimum, Percentage
Target Allocation Maximum, Percentage
Fixed Income Funds [Member] | Other Mutual Funds - Fixed Income [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		$ 1,446	$ 1,446		$ 0		$ 1,446
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		1,446
Fair Value of Plan Assets, End of Period		0	1,446
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		1,446	1,446		0		1,446
Fixed Income Funds [Member] | Other Mutual Funds - Fixed Income [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		0
Fair Value of Plan Assets, End of Period		0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		0	0		0		0
Fixed Income Funds [Member] | Other Mutual Funds - Fixed Income [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		0	0		0		0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		0
Fair Value of Plan Assets, End of Period		0	0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Fair Value of Plan Assets		0	0		0		0
Employees' Pension Plan [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		45,704	44,653	$ 44,653	47,234		45,704
Benefit Obligation		36,966	33,259	33,259	35,982		36,966
Funded Status of Plan					11,252		8,738
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit Obligation, Beginning of Period		36,966	33,259
Service Cost		1,503	1,410	1,506
Interest Cost		1,545	1,621	1,261
Plan Participants' Contributions		0	0
Amendments		277	0
Actuarial Loss		(1,670)	2,909
Benefits Paid		(2,639)	(2,233)
Benefit Obligation, End of Period		35,982	36,966	33,259
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		45,704	44,653
Actual Return on Plan Assets		1,169	3,284
Contributions to Pension Plans		3,000	0
Plan Participants' Contributions		0	0
Benefits Paid		(2,639)	(2,233)
Fair Value of Plan Assets, End of Period		47,234	45,704	44,653
Accumulated Benefit Obligation at December 31, 2012					35,582
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Prepaid Benefit Cost					11,252		8,738
Accrued Benefit Liability					0		0
Net Benefit Cost Recognized					11,252		8,738
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Net Retirement Plan Loss, Before-Tax Amount		472	2,855	(8,438)
Net prior Service Cost Arising During the Period		277	0	0
Amortization of Net Loss		(601)	(356)	(1,231)
Accretion of Net Retirement Plan Prior Service Credit, Tax (Expense) Benefit		83	45	(37)
Total Other Comprehensive (Loss) Income for Pension and Other Postretirement Benefit Plans		231	2,544	(9,706)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]
Net Actuarial Loss					10,727		10,856
Prior Service (Credit) Cost					150		(210)
Total Accumulated Other Comprehensive Income, Before Tax					$ 10,877		$ 10,646
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year [Abstract]
Net Actuarial Loss		559
Prior Service (Credit) Cost		(57)
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service Cost		1,503	1,410	1,506
Interest Cost		1,545	1,621	1,261
Expected Return on Plan Assets		(3,311)	(3,230)	(2,889)
Amortization of Prior Service (Credit) Cost		(83)	(45)	37
Amortization of Net Loss		601	356	1,232
Net Periodic Benefit Cost		$ 255	$ 112	$ 1,147
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount Rate					4.73%		4.31%
Rate of Compensation Increase					3.50%		3.50%
Interest Rate Credit for Determining Projected Cash Balance Account					3.03%		3.04%
Interest Rate to Annuitize Cash Balance Account					5.00%		4.75%
Interest Rate to Convert Annuities to Actuarially Equivalent Lump Sum Account					5.00%		4.75%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount Rate		4.31%	5.10%	3.55%
Expected Long-Term Return on Assets		7.50%	7.50%	7.50%
Rate of Compensation Increase		3.50%	3.50%	3.50%
Interest Rate Credit for Determining Projected Cash Balance Account		3.04%	4.00%	3.00%
Interest Rate to Annuitize Cash Balance Account		4.75%	5.25%	4.50%
Interest Rate to Convert Accuities to Actuarially Equivalent Lump Sum Amounts		4.75%	5.25%	4.50%
Fair Value of Plan Assets		$ 45,704	$ 44,653	$ 44,653	$ 47,234		$ 45,704
Expected Future Benefit Payments [Abstract]
2,016					2,264
2,017					2,254
2,018					2,195
2,019					2,353
2,020					2,566
2021- 2025					13,477
Estimated Contributions During 2015		0
Select Executive Retirement Plan [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		0	0	0	0		0
Benefit Obligation		5,072	4,459	4,459	4,784		5,072
Funded Status of Plan					(4,784)		(5,072)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit Obligation, Beginning of Period		5,072	4,459
Service Cost		32	10	0
Interest Cost		211	206	163
Plan Participants' Contributions		0	0
Amendments		91	0
Actuarial Loss		(152)	870
Benefits Paid		(470)	(473)
Benefit Obligation, End of Period		4,784	5,072	4,459
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		0	0
Actual Return on Plan Assets		0	0
Contributions to Pension Plans		470	473
Plan Participants' Contributions		0	0
Benefits Paid		(470)	(473)
Fair Value of Plan Assets, End of Period		0	0	0
Accumulated Benefit Obligation at December 31, 2012					4,784
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Prepaid Benefit Cost					0		0
Accrued Benefit Liability					(4,784)		(5,072)
Net Benefit Cost Recognized					(4,784)		(5,072)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Net Retirement Plan Loss, Before-Tax Amount		(152)	871	(554)
Net prior Service Cost Arising During the Period		91	0	0
Amortization of Net Loss		(131)	(93)	(140)
Accretion of Net Retirement Plan Prior Service Credit, Tax (Expense) Benefit		(58)	(72)	(79)
Total Other Comprehensive (Loss) Income for Pension and Other Postretirement Benefit Plans		(250)	706	(773)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]
Net Actuarial Loss					2,169		2,452
Prior Service (Credit) Cost					603		570
Total Accumulated Other Comprehensive Income, Before Tax					$ 2,772		$ 3,022
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year [Abstract]
Net Actuarial Loss		112
Prior Service (Credit) Cost		57
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service Cost		32	10	0
Interest Cost		211	206	163
Expected Return on Plan Assets		0	0	0
Amortization of Prior Service (Credit) Cost		58	72	79
Amortization of Net Loss		131	93	139
Net Periodic Benefit Cost		$ 432	$ 381	$ 381
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount Rate					4.61%		4.26%
Rate of Compensation Increase					3.00%		3.50%
Interest Rate to Convert Annuities to Actuarially Equivalent Lump Sum Account					5.00%		4.75%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount Rate		4.26%	4.85%	3.15%
Rate of Compensation Increase		3.50%	3.50%	3.50%
Interest Rate to Convert Accuities to Actuarially Equivalent Lump Sum Amounts		4.75%	5.25%	4.50%
Fair Value of Plan Assets		$ 0	$ 0	$ 0	$ 0		$ 0
Expected Future Benefit Payments [Abstract]
2,016					443
2,017					433
2,018					422
2,019					410
2,020					397
2021- 2025					1,814
Estimated Contributions During 2015		443
Postretirement Benefit Plans [Member]
Defined Benefit Plan, Funded Status of Plan [Abstract]
Fair Value of Plan Assets		0	0	0	0		0
Benefit Obligation		9,170	7,619	7,619	7,701		9,170
Funded Status of Plan					(7,701)		(9,170)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit Obligation, Beginning of Period		9,170	7,619
Service Cost		250	173	211
Interest Cost		394	374	308
Plan Participants' Contributions		481	383
Amendments		0	570
Actuarial Loss		(1,715)	884
Benefits Paid		(879)	(833)
Benefit Obligation, End of Period		7,701	9,170	7,619
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets, Beginning of Period		0	0
Actual Return on Plan Assets		0	0
Contributions to Pension Plans		398	450
Plan Participants' Contributions		481	383
Benefits Paid		(879)	(833)
Fair Value of Plan Assets, End of Period		0	0	0
Accumulated Benefit Obligation at December 31, 2012					7,701
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Prepaid Benefit Cost					0		0
Accrued Benefit Liability					(7,701)		(9,170)
Net Benefit Cost Recognized					(7,701)		(9,170)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Net Retirement Plan Loss, Before-Tax Amount		(1,715)	884	(1,648)
Net prior Service Cost Arising During the Period		0	570	0
Amortization of Net Loss		(114)	(25)	(142)
Accretion of Net Retirement Plan Prior Service Credit, Tax (Expense) Benefit		31	114	114
Total Other Comprehensive (Loss) Income for Pension and Other Postretirement Benefit Plans		(1,798)	1,543	(1,676)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]
Net Actuarial Loss					90		1,919
Prior Service (Credit) Cost					410		379
Total Accumulated Other Comprehensive Income, Before Tax					$ 500		$ 2,298
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year [Abstract]
Net Actuarial Loss		0
Prior Service (Credit) Cost		(12)
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service Cost		250	173	211
Interest Cost		394	374	308
Expected Return on Plan Assets		0	0	0
Amortization of Prior Service (Credit) Cost		(31)	(114)	(114)
Amortization of Net Loss		114	25	142
Net Periodic Benefit Cost		$ 727	$ 458	$ 547
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount Rate					4.69%		4.31%
Rate of Compensation Increase					3.50%		3.50%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount Rate		4.31%	5.10%	3.55%
Rate of Compensation Increase		3.50%	3.50%	3.50%
Fair Value of Plan Assets		$ 0	$ 0	$ 0	$ 0		$ 0
Expected Future Benefit Payments [Abstract]
2,016					539
2,017					523
2,018					545
2,019					568
2,020					566
2021- 2025					$ 2,944
Estimated Contributions During 2015		$ 539
[1]	Acquisition of Arrow Financial Corporation common stock was under 10% of the total fair value of the employee's pension plan assets at the time of acquisition.
[2]	The North Country Funds - Equity and the North Country Funds - Fixed Income are publicly traded mutual funds advised by Arrow's subsidiary, North Country Investment Advisers, Inc.

Other Expenses (Details)

Other Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other Income and Expenses [Abstract]
Computer Services	$ 3,909	$ 3,659	$ 3,261
Legal and Other Professional Fees	2,188	1,836	1,823
Postage and Courier	1,050	1,084	1,046
Advertising and Promotion	965	886	879
Telephone and Communications	832	746	804
Stationery and Printing	796	851	905
Intangible Asset Amortization	327	387	452
All Other	3,846	3,531	3,486
Total Other Operating Expense	$ 13,913	$ 12,980	$ 12,656

Income Taxes Current Income Tax

Income Taxes Current Income Tax Expense (Benefit), Continuing Operations(Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current Tax Expense: Federal	$ 8,570	$ 9,270	$ 7,933
Current Tax Expense: State	860	1,203	852
Total Current Tax Expense	9,430	10,473	8,785
Deferred Tax Expense: Federal	1,004	(315)	172
Deferred Tax Expense: State	176	16	122
Total Deferred Tax Expense (Benefit)	1,180	(299)	294
Income Tax Expense (Benefit), Continuing Operations	$ 10,610	$ 10,174	$ 9,079

Income Taxes Effective Income T

Income Taxes Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Computed Tax Expense at Statutory Rate	$ 12,345	$ 11,737	$ 10,806
Tax-Exempt Income	(2,292)	(2,215)	(2,238)
Nondeductible Interest Expense	36	51	80
State Taxes, Net of Federal Income Tax Benefit	805	791	633
Other Items, Net	(284)	(190)	(202)
Income Tax Expense (Benefit), Continuing Operations	$ 10,610	$ 10,174	$ 9,079

Income Taxes Components of Defe

Income Taxes Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred Tax Assets, Gross [Abstract]
Allowance for Loan Losses	$ 6,453	$ 6,113
Pension and Deferred Compensation Plans	3,973	3,885
Pension Liability Included in Accumulated Other Comprehensive Income	5,550	6,263
Other	557	614
Total Gross Deferred Tax Assets	16,533	16,875
Valuation Allowance for Deferred Tax Assets	0	0
Total Gross Deferred Tax Assets, Net of Valuation Allowance	16,533	16,875
Deferred Tax Liabilities, Gross [Abstract]
Pension Plans	8,680	7,604
Depreciation	1,383	1,222
Deferred Income	4,167	3,927
Net Unrealized Gains on Securities Available-for-Sale Included in Accumulated Other Comprehensive Income	405	1,638
Goodwill	5,316	5,242
Total Gross Deferred Tax Liabilites	$ 19,951	$ 19,633

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014		Dec. 31, 2013
Earnings Per Share [Abstract]
Net Income	$ 24,662	$ 23,360		$ 21,795
Basic Shares, in Shares	12,894	12,856	[1]	12,793	[1]
Basic Earnings, in Earnings Per Share	$ 1.91	$ 1.82	[1]	$ 1.70	[1]
Dilutive Average Shares Attributable to Stock Options, in Shares	48	30		32
Weighted Average Shares - Diluted, in Shares	12,942	12,886	[1]	12,825	[1]
Diluted Earnings, In Earnings Per Share	$ 1.91	$ 1.81	[1]	$ 1.70	[1]
Antidilutive Shares Excluded from the Calculation of Earnings Per Share, in Shares	0	0		47
[1]	Share and Per Share Amounts have been restated for the September 2015 2% stock dividend.

Fair Values Fair Value - Recurr

Fair Values Fair Value - Recurring and Nonrecurring (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	$ 402,309	$ 366,139
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	402,309	366,139
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	402,309	366,139
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	0
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral Dependent Impaired Loans	0	574
Other Real Estate and Repossessed Assets, Net	2,018	393
Fair Value, Measurements, Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral Dependent Impaired Loans	0	0
Other Real Estate and Repossessed Assets, Net	0	0
Fair Value, Measurements, Nonrecurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral Dependent Impaired Loans	0	0
Other Real Estate and Repossessed Assets, Net	0	0
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral Dependent Impaired Loans	0	574
Other Real Estate and Repossessed Assets, Net	2,018	393
Fair Value, Measurements, Nonrecurring [Member] | Total Gains (Losses) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral Dependent Impaired Loans	0	(109)
Other Real Estate and Repossessed Assets, Net	(687)	(15)
U.S. Agency Obligations [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	155,782	137,603
U.S. Agency Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	0
U.S. Agency Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	155,782	137,603
U.S. Agency Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	0
State and Municipal Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	52,408	81,730
State and Municipal Obligations [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	52,408	81,730
State and Municipal Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	0
State and Municipal Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	52,408	81,730
State and Municipal Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	0
Mortgage-Backed Securities - Residential [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	178,588	128,827
Mortgage-Backed Securities - Residential [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	178,588	128,827
Mortgage-Backed Securities - Residential [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	0
Mortgage-Backed Securities - Residential [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	178,588	128,827
Mortgage-Backed Securities - Residential [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	0
Corporate and Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	14,299	16,725
Corporate and Other Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	14,299	16,725
Corporate and Other Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	0
Corporate and Other Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	14,299	16,725
Corporate and Other Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	0
Mututal Funds and Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	1,232	1,254
Mututal Funds and Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	1,232	1,254
Mututal Funds and Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	0
Mututal Funds and Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	1,232	1,254
Mututal Funds and Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	$ 0	$ 0

Fair Values Fair Value By Balan

Fair Values Fair Value By Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	$ 51,068	$ 46,295	$ 49,980	$ 48,832
Available-for-sale Securities	402,309	366,139
Held-to-Maturity Securities	320,611	302,024
Held-to-maturity Securities, at Fair Value	325,930	308,566
Federal Home Loan Bank and Federal Reserve Bank Stock	8,839	4,851
Net Loans	1,557,914	1,397,698
Deposits	2,030,423	1,902,948
Federal Home Loan Bank Term Advances	55,000	10,000
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	51,068	46,295
Available-for-sale Securities	402,309	366,139
Held-to-Maturity Securities	320,611	302,024
Federal Home Loan Bank and Federal Reserve Bank Stock	8,839	4,851
Net Loans	1,557,914	1,397,698
Accrued Interest Receivable	6,360	5,834
Deposits	2,030,423	1,902,948
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	23,173	19,421
Federal Home Loan Bank Term Advances	137,000	51,000
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000
Accrued Interest Payable	231	274
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	51,068	46,295
Available-for-sale Securities	402,309	366,139
Held-to-maturity Securities, at Fair Value	325,930	308,566
Federal Home Loan Bank Stock and Federal Reserve Bank Stock, Fair Value Disclosure	8,839	4,851
Net Loans, Fair Value Disclosure	1,557,511	1,405,454
Accrued Interest Receivable, Fair Value Disclosure	6,360	5,834
Deposits, Fair Value Disclosure	2,024,224	1,899,682
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase, Fair Value Disclosure	19,421	19,421
Federal Home Loan Bank Term Advances, Fair Value Disclosure	137,063	51,258
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	20,000	20,000
Accrued Interest Payable, Fair Value Disclosure	231	274
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	51,068	46,295
Available-for-sale Securities	0	0
Held-to-maturity Securities, at Fair Value	0	0
Federal Home Loan Bank Stock and Federal Reserve Bank Stock, Fair Value Disclosure	8,839	4,851
Net Loans, Fair Value Disclosure	0	0
Accrued Interest Receivable, Fair Value Disclosure	6,360	5,834
Deposits, Fair Value Disclosure	1,840,606	1,697,105
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase, Fair Value Disclosure	19,421	19,421
Federal Home Loan Bank Term Advances, Fair Value Disclosure	82,000	41,000
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	0	0
Accrued Interest Payable, Fair Value Disclosure	231	274
Significant Other Observable Inputs (Level 2) [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Available-for-sale Securities	402,309	366,139
Held-to-maturity Securities, at Fair Value	325,930	308,566
Federal Home Loan Bank Stock and Federal Reserve Bank Stock, Fair Value Disclosure	0	0
Net Loans, Fair Value Disclosure	0	0
Accrued Interest Receivable, Fair Value Disclosure	0	0
Deposits, Fair Value Disclosure	183,618	202,577
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase, Fair Value Disclosure	0	0
Federal Home Loan Bank Term Advances, Fair Value Disclosure	55,063	10,258
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	20,000	20,000
Accrued Interest Payable, Fair Value Disclosure	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Available-for-sale Securities	0	0
Held-to-maturity Securities, at Fair Value	0	0
Federal Home Loan Bank Stock and Federal Reserve Bank Stock, Fair Value Disclosure	0	0
Net Loans, Fair Value Disclosure	1,557,511	1,405,454
Accrued Interest Receivable, Fair Value Disclosure	0	0
Deposits, Fair Value Disclosure	0	0
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase, Fair Value Disclosure	0	0
Federal Home Loan Bank Term Advances, Fair Value Disclosure	0	0
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	0	0
Accrued Interest Payable, Fair Value Disclosure	$ 0	$ 0

Leases Rent Expense (Details)

Leases Rent Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Leases [Abstract]
Rent Expense	$ 862	$ 784	$ 671

Leases (Details)

Leases (Details) $ in Thousands	Dec. 31, 2015USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2,016	$ 704
2,017	517
2,018	454
2,019	333
2,020	219
Later Years	468
Total Minimum Lease Payments	$ 2,695

Regulatory Matters (Details)

Regulatory Matters (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Parent Company [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets) - Actual Amount	$ 239,988	$ 225,766
Total Capital (to Risk Weighted Assets) - Actual Ratio	15.10%	15.50%
Total Capital (to Risk Weighted Assets) - Minimum Amounts For Capital Adequacy Purposes Amount	$ 127,146	$ 116,524
Total Capital (to Risk Weighted Assets) - Minimum Amounts For Capital Adequacy Purposes Ratio	8.00%	8.00%
Total Capital (to Risk Weighted Assets) - Minimum Amounts To Be Well-Capitalized Amount	$ 158,932	$ 145,655
Total Capital (to Risk Weighted Assets) - Minimum Amounts To Be Well-Capitalized Ratio	10.00%	10.00%
Tier I Capital (to Risk Weighted Assets) - Actual Amount	$ 223,899	$ 210,136
Tier I Capital (to Risk Weighted Assets) - Actual Ratio	14.10%	14.50%
Tier I Capital (to Risk Weighted Assets) - Minimum Acounts For Capital Adequacy Purposes Amount	$ 95,276	$ 57,969
Tier I Capital (to Risk Weighted Assets) - Minimum Amounts For Capital Adequacy Purposes Ratio	6.00%	4.00%
Tier I Capital (to Risk Weighted Assets) - Minimum Amounts To Be Well-Capitalized Ratio	$ 127,035	$ 86,953
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	8.00%	6.00%
Tier One Risk Based Capital	$ 223,899	$ 210,136
Tier One Leverage Capital to Average Assets	9.30%	9.40%
Tier One Leverage Capital Required for Capital Adequacy	$ 96,301	$ 89,420
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%	4.00%
Tier One Leverage Capital Required to be Well Capitalized	$ 120,376	$ 89,420
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	5.00%	4.00%
Common Equity Tier 1 Capital Ratio	$ 203,848
Common Equity Tier 1 Capital Ratio Percentage	12.80%
Common Equity Tier 1 Capital Ratio Required for Capital Adequacy	$ 71,665
Common Equity Tier 1 Capital Ratio For Capital Adequacy	4.50%
Common Equity Tier 1 Leverage Capital Required to be Well Capitalized	$ 103,517
Common Equity Tier 1 Capital Ratio to be Well Capitalized	6.50%
Glens Falls National [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets) - Actual Amount	$ 193,302	$ 183,446
Total Capital (to Risk Weighted Assets) - Actual Ratio	15.00%	15.50%
Total Capital (to Risk Weighted Assets) - Minimum Amounts For Capital Adequacy Purposes Amount	$ 103,094	$ 94,682
Total Capital (to Risk Weighted Assets) - Minimum Amounts For Capital Adequacy Purposes Ratio	8.00%	8.00%
Total Capital (to Risk Weighted Assets) - Minimum Amounts To Be Well-Capitalized Amount	$ 128,868	$ 118,352
Total Capital (to Risk Weighted Assets) - Minimum Amounts To Be Well-Capitalized Ratio	10.00%	10.00%
Tier I Capital (to Risk Weighted Assets) - Actual Amount	$ 180,280	$ 170,497
Tier I Capital (to Risk Weighted Assets) - Actual Ratio	14.00%	14.40%
Tier I Capital (to Risk Weighted Assets) - Minimum Acounts For Capital Adequacy Purposes Amount	$ 77,263	$ 47,360
Tier I Capital (to Risk Weighted Assets) - Minimum Amounts For Capital Adequacy Purposes Ratio	6.00%	4.00%
Tier I Capital (to Risk Weighted Assets) - Minimum Amounts To Be Well-Capitalized Ratio	$ 103,017	$ 71,040
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	8.00%	6.00%
Tier One Risk Based Capital	$ 180,280	$ 170,497
Tier One Leverage Capital to Average Assets	8.90%	9.10%
Tier One Leverage Capital Required for Capital Adequacy	$ 81,025	$ 74,944
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%	4.00%
Tier One Leverage Capital Required to be Well Capitalized	$ 101,281	$ 93,680
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	5.00%	5.00%
Common Equity Tier 1 Capital Ratio	$ 180,229
Common Equity Tier 1 Capital Ratio Percentage	14.00%
Common Equity Tier 1 Capital Ratio Required for Capital Adequacy	$ 57,931
Common Equity Tier 1 Capital Ratio For Capital Adequacy	4.50%
Common Equity Tier 1 Leverage Capital Required to be Well Capitalized	$ 83,678
Common Equity Tier 1 Capital Ratio to be Well Capitalized	6.50%
Saratoga National [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets) - Actual Amount	$ 37,658	$ 35,217
Total Capital (to Risk Weighted Assets) - Actual Ratio	12.60%	13.30%
Total Capital (to Risk Weighted Assets) - Minimum Amounts For Capital Adequacy Purposes Amount	$ 23,910	$ 21,183
Total Capital (to Risk Weighted Assets) - Minimum Amounts For Capital Adequacy Purposes Ratio	8.00%	8.00%
Total Capital (to Risk Weighted Assets) - Minimum Amounts To Be Well-Capitalized Amount	$ 29,887	$ 26,479
Total Capital (to Risk Weighted Assets) - Minimum Amounts To Be Well-Capitalized Ratio	10.00%	10.00%
Tier I Capital (to Risk Weighted Assets) - Actual Amount	$ 34,642	$ 32,596
Tier I Capital (to Risk Weighted Assets) - Actual Ratio	11.60%	12.30%
Tier I Capital (to Risk Weighted Assets) - Minimum Acounts For Capital Adequacy Purposes Amount	$ 17,918	$ 10,600
Tier I Capital (to Risk Weighted Assets) - Minimum Amounts For Capital Adequacy Purposes Ratio	6.00%	4.00%
Tier I Capital (to Risk Weighted Assets) - Minimum Amounts To Be Well-Capitalized Ratio	$ 23,891	$ 15,900
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	8.00%	6.00%
Tier One Risk Based Capital	$ 34,642	$ 32,596
Tier One Leverage Capital to Average Assets	8.90%	9.40%
Tier One Leverage Capital Required for Capital Adequacy	$ 15,569	$ 13,871
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%	4.00%
Tier One Leverage Capital Required to be Well Capitalized	$ 19,462	$ 17,338
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	5.00%	5.00%
Common Equity Tier 1 Capital Ratio	$ 34,642
Common Equity Tier 1 Capital Ratio Percentage	11.60%
Common Equity Tier 1 Capital Ratio Required for Capital Adequacy	$ 13,439
Common Equity Tier 1 Capital Ratio For Capital Adequacy	4.50%
Common Equity Tier 1 Leverage Capital Required to be Well Capitalized	$ 19,411
Common Equity Tier 1 Capital Ratio to be Well Capitalized	6.50%

Regulatory Matters Other Regula

Regulatory Matters Other Regulation Disclosures (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Common Equity Tier 1 Capital Ratio [Line Items]
Maximum Subsidiary Dividend		$ 31,009
Parent Company [Member]
Common Equity Tier 1 Capital Ratio [Line Items]
Tier One Risk Based Capital	$ 223,899,000	$ 210,136,000

Parent Only Financial Informa86

Parent Only Financial Information Parent Only Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
ASSETS
Interest-Bearing Deposits at Banks	$ 16,252	$ 11,214
Available-for-sale Securities	402,309	366,139
Held-to-Maturity Securities	320,611	302,024
Other Assets	53,027	46,297
Total Assets	2,446,188	2,217,420
LIABILITIES
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000
Other Liabilities	21,621	23,125
Total Liabilities	2,232,217	2,016,494
Equity [Abstract]
Stockholders' Equity Attributable to Parent	213,971	200,926	$ 192,154	$ 175,825
Total Liabilities and Stockholders' Equity	2,446,188	2,217,420
Parent Company [Member]
ASSETS
Interest-Bearing Deposits at Banks	3,441	3,013
Available-for-sale Securities	1,232	1,254
Held-to-Maturity Securities	1,000	1,000
Equity Method Investments	225,934	214,813
Other Assets	7,390	6,538
Total Assets	238,997	226,618
LIABILITIES
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000
Other Liabilities	5,026	5,692
Total Liabilities	25,026	25,692
Equity [Abstract]
Stockholders' Equity Attributable to Parent	213,971	200,926
Total Liabilities and Stockholders' Equity	$ 238,997	$ 226,618

Parent Only Financial Informa87

Parent Only Financial Information Parent Only Income Statement (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Interest and Dividends on Investments	$ 70,738	$ 66,861	$ 64,138
Other Operating Income	1,354	1,238	1,024
Net Gains on Securities Transactions	129	110	540
Interest Expense	4,813	5,767	7,922
Salaries and Employee Benefits	33,064	30,941	31,182
Other Operating Expense	13,913	12,980	12,656
Income Tax Benefit	(10,610)	(10,174)	(9,079)
Net Income	24,662	23,360	21,795
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Dividends from Bank Subsidiaries	13,400	13,300	12,900
Interest and Dividends on Investments	118	116	116
Other Operating Income	847	578	549
Total Income	14,365	13,994	13,565
Interest Expense	619	620	640
Salaries and Employee Benefits	80	77	59
Other Operating Expense	885	754	860
Total Expense	1,584	1,451	1,559
Income Before Income Tax Benefit and Equity in Undistributed Net Income of Subsidiaries	12,781	12,543	12,006
Income Tax Benefit	(372)	(473)	(634)
Equity in Undistributed Net Income of Subsidiaries	11,509	10,344	9,155
Net Income	$ 24,662	$ 23,360	$ 21,795

Parent Only Financial Informa88

Parent Only Financial Information Parent Only Statement of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash Flows from Operating Activities:
Net Income	$ 24,662	$ 23,360	$ 21,795
Gains on the Sale of Securities Available-for-Sale	172	137	527
Stock-Based Compensation Expense	308	360	372
Stock-Based Compensation Expense	308	360	372
Net Cash Provided By Operating Activities	28,926	30,641	36,673
Cash Flows from Investing Activities:
Proceeds from the Sale of Securities Available-for-Sale	66,551	49,928	16,295
Purchases of Securities Available-for-Sale	(201,820)	(113,953)	(136,416)
Net Cash Used In Investing Activities	(229,539)	(67,693)	(149,015)
Cash Flows from Financing Activities:
Stock Options Exercised	918	1,454	1,254
Shares Issued Under the Employee Stock Purchase Plan	494	488	477
Shares Issued for Dividend Reinvestment Plans	886	0	1,280
Tax Benefit from Exercise of Stock Options	59	25	23
Purchases of Treasury Stock	(1,498)	(2,455)	(1,709)
Cash Dividends Paid	(12,700)	(12,407)	(12,109)
Net Cash Provided By Financing Activities	205,386	33,367	113,490
Net Increase (Decrease) in Cash and Cash Equivalents	4,773	(3,685)	1,148
Cash and Cash Equivalents at Beginning of Year	46,295	49,980	48,832
Cash and Cash Equivalents at End of Year	51,068	46,295	49,980
Interest on Deposits and Borrowings	4,856	5,932	8,067
Shares Issued for Acquisition of Subsidiary	0	91	233
Parent Company [Member]
Cash Flows from Operating Activities:
Net Income	24,662	23,360	21,795
Undistributed Net Income of Subsidiaries	(11,509)	(10,344)	(9,155)
Stock-Based Compensation Expense	227	197	198
Stock-Based Compensation Expense	308	360	372
Changes in Other Assets and Other Liabilities	(1,419)	(1,014)	(990)
Net Cash Provided By Operating Activities	12,269	12,559	12,220
Cash Flows from Investing Activities:
Proceeds from the Sale of Securities Available-for-Sale	47	45	45
Purchases of Securities Available-for-Sale	(47)	(45)	(45)
Net Cash Used In Investing Activities	0	0	0
Cash Flows from Financing Activities:
Stock Options Exercised	918	1,454	1,254
Shares Issued Under the Employee Stock Purchase Plan	494	488	477
Shares Issued for Dividend Reinvestment Plans	(886)	0	(1,280)
Tax Benefit from Exercise of Stock Options	59	25	23
Purchases of Treasury Stock	(1,498)	(2,455)	(1,709)
Cash Dividends Paid	(12,700)	(12,407)	(12,109)
Net Cash Provided By Financing Activities	(11,841)	(12,895)	(10,784)
Net Increase (Decrease) in Cash and Cash Equivalents	428	(336)	1,436
Cash and Cash Equivalents at Beginning of Year	3,013	3,349	1,913
Cash and Cash Equivalents at End of Year	3,441	3,013	3,349
Interest on Deposits and Borrowings	619	620	640
Shares Issued for Acquisition of Subsidiary	$ 0	$ 91	$ 233