TrustCo Bank Corp NY (TRST) 10-Q 4 May 18 2018 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	Apr. 30, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	TRUSTCO BANK CORP N Y
Entity Central Index Key	357,301
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		96,429,393
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest and dividend income:
Interest and fees on loans	$ 38,091	$ 36,044
Interest and dividends on securities available for sale:
U. S. government sponsored enterprises	750	595
State and political subdivisions	7	12
Mortgage-backed securities and collateralized mortgage obligations-residential	1,763	1,958
Corporate bonds	133	151
Small Business Administration-guaranteed participation securities	352	415
Mortgage-backed securities and collateralized mortgage obligations-commercial	42	23
Other securities	5	4
Total interest and dividends on securities available for sale	3,052	3,158
Interest on held to maturity securities:
Mortgage-backed securities and collateralized mortgage obligations-residential	260	316
Corporate bonds	0	154
Total interest on held to maturity securities	260	470
Federal Reserve Bank and Federal Home Loan Bank stock	77	134
Interest on federal funds sold and other short-term investments	2,017	1,246
Total interest income	43,497	41,052
Interest on deposits:
Interest-bearing checking	106	124
Savings	419	430
Money market deposit accounts	439	466
Time deposits	2,860	2,283
Interest on short-term borrowings	358	349
Total interest expense	4,182	3,652
Net interest income	39,315	37,400
Provision for loan losses	300	600
Net interest income after provision for loan losses	39,015	36,800
Noninterest income:
Other	219	232
Total noninterest income	4,679	4,727
Noninterest expenses:
Salaries and employee benefits	10,422	10,210
Net occupancy expense	4,315	4,109
Equipment expense	1,751	1,556
Professional services	1,430	1,928
Outsourced services	1,925	1,500
Advertising expense	630	713
FDIC and other insurance	1,023	1,047
Other real estate expense, net	372	499
Other	2,287	2,457
Total noninterest expenses	24,155	24,019
Income before taxes	19,539	17,508
Income taxes	4,731	6,561
Net income	$ 14,808	$ 10,947
Net income per share:
Basic (in dollars per share)	$ 0.154	$ 0.114
Diluted (in dollars per share)	$ 0.153	$ 0.114
Trustco Financial Services Income [Member]
Noninterest income:
Non-interest income	$ 1,815	$ 1,858
Fees for Services to Customers [Member]
Noninterest income:
Non-interest income	$ 2,645	$ 2,637

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Consolidated Statements of Comprehensive Income (Unaudited) [Abstract]
Net income	$ 14,808	$ 10,947
Net unrealized holding (loss) gain on securities available for sale	(7,160)	1,179
Tax effect	1,858	(472)
Net unrealized (loss) gain on securities available for sale, net of tax	(5,302)	707
Amortization of net actuarial gain	(72)	(63)
Amortization of prior service cost	23	23
Tax effect	13	16
Amortization of net actuarial gain and prior service cost on pension and postretirement plans, net of tax	(36)	(24)
Other comprehensive (loss) income, net of tax	(5,338)	683
Comprehensive income	$ 9,470	$ 11,630

Consolidated Statements of Fina

Consolidated Statements of Financial Condition (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS:
Cash and due from banks	$ 39,373	$ 44,125
Federal funds sold and other short term investments	577,797	568,615
Total cash and cash equivalents	617,170	612,740
Securities available for sale	559,083	571,965
Held to maturity securities (fair value 2018 $26,994; 2017 $28,701)	26,174	27,551
Federal Reserve Bank and Federal Home Loan Bank stock	8,779	8,779
Loans, net of deferred net costs	3,666,975	3,636,407
Less: Allowance for loan losses	44,379	44,170
Net loans	3,622,596	3,592,237
Bank premises and equipment, net	35,240	35,157
Other assets	62,522	59,579
Total assets	4,931,564	4,908,008
Deposits:
Demand	403,782	398,399
Interest-bearing checking	915,163	891,052
Savings accounts	1,266,852	1,260,447
Money market deposit accounts	539,839	556,462
Time deposits	1,109,444	1,066,966
Total deposits	4,235,080	4,173,326
Short-term borrowings	203,910	242,991
Accrued expenses and other liabilities	30,477	33,383
Total liabilities	4,469,467	4,449,700
SHAREHOLDERS' EQUITY:
Capital stock par value $1; 150,000,000 shares authorized; 100,002,482 and 99,998,482 shares issued at March 31, 2018 and December 31, 2017, respectively	100,002	99,998
Surplus	175,674	175,651
Undivided profits	229,267	219,436
Accumulated other comprehensive loss, net of tax	(8,490)	(1,806)
Treasury stock at cost - 3,643,882 and 3,709,171 shares at March 31, 2018 and December 31, 2017, respectively	(34,356)	(34,971)
Total shareholders' equity	462,097	458,308
Total liabilities and shareholders' equity	$ 4,931,564	$ 4,908,008

Consolidated Statements of Fin5

Consolidated Statements of Financial Condition (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS:
Held to maturity securities, fair value	$ 26,994	$ 28,701
SHAREHOLDERS' EQUITY:
Capital stock, par value (in dollars per share)	$ 1	$ 1
Capital stock, shares authorized (in shares)	150,000,000	150,000,000
Capital stock, shares issued (in shares)	100,002,482	99,998,482
Treasury stock, at cost (in shares)	3,643,882	3,709,171

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Capital Stock [Member]	Surplus [Member]	Undivided Profits [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2016	$ 99,214	$ 171,425	$ 201,517	$ (6,251)	$ (33,219)	$ 432,686
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	10,947	0	0	10,947
Other comprehensive income, net of tax	0	0	0	683	0	683
Stock options exercised	279	1,224	0	0	0	1,503
Cash dividend declared	0	0	(6,291)	0	0	(6,291)
Purchase of treasury stock	0	0	0	0	(1,503)	(1,503)
Sale of treasury stock	0	(63)	0	0	696	633
Stock based compensation expense	0	42	0	0	0	42
Balance at Mar. 31, 2017	99,493	172,628	206,173	(5,568)	(34,026)	438,700
Balance at Dec. 31, 2017	99,998	175,651	219,436	(1,806)	(34,971)	458,308
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	14,808	0	0	14,808
Tax Cuts and Jobs Act of 2017, Reclassification from AOCI to Retained Earnings, Tax Effect	0	0	1,346	(1,346)	0	0
Other comprehensive income, net of tax	0	0	0	(5,338)	0	(5,338)
Stock options exercised	4	16	0	0	0	20
Cash dividend declared	0	0	(6,323)	0	0	(6,323)
Sale of treasury stock	0	(21)	0	0	615	594
Stock based compensation expense	0	28	0	0	0	28
Balance at Mar. 31, 2018	$ 100,002	$ 175,674	$ 229,267	$ (8,490)	$ (34,356)	$ 462,097

Consolidated Statements of Cha7

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Consolidated Statements of Changes in Shareholders' Equity (Unaudited) [Abstract]
Stock options exercised (in shares)	4,000	279,000
Cash dividend declared (in dollars per share)	$ 0.0656	$ 0.0656
Purchase of treasury stock (in shares)		213,356
Sale of treasury stock (in shares)	65,289	71,925

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income	$ 14,808	$ 10,947
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	942	946
Net gain on sale of other real estate owned	(137)	(191)
Writedown of other real estate owned	199	188
Provision for loan losses	300	600
Deferred tax (benefit) expense	(305)	368
Net amortization of securities	915	1,114
Stock based compensation expense	28	42
(Increase) decrease in taxes receivable	(1,787)	(411)
Decrease in interest receivable	862	328
Increase (decrease) in interest payable	128	(16)
Increase in other assets	(946)	(997)
Decrease in accrued expenses and other liabilities	(3,039)	(1,602)
Total adjustments	(2,840)	369
Net cash provided by operating activities	11,968	11,316
Cash flows from investing activities:
Proceeds from calls of securities available for sale	25,028	20,770
Proceeds from maturities of securities available for sale	25,000	0
Proceeds from calls and maturities of held to maturity securities	1,377	2,220
Purchases of securities available for sale	(45,224)	(47,905)
Net increase in loans	(31,151)	(19,579)
Proceeds from dispositions of other real estate owned	1,486	1,867
Purchases of bank premises and equipment	(1,025)	(655)
Net cash (used in) provided by investing activities	(24,509)	(43,282)
Cash flows from financing activities:
Net increase in deposits	61,754	2,306
Net (decrease) increase in short-term borrowings	(39,081)	11,540
Proceeds from exercise of stock options	20	1,503
Stock based award tax withholding payments	0	(312)
Proceeds from sale of treasury stock	594	633
Purchases of treasury stock	0	(1,503)
Dividends paid	(6,316)	(6,284)
Net cash provided by financing activities	16,971	7,883
Net increase (decrease) in cash and cash equivalents	4,430	(24,083)
Cash and cash equivalents at beginning of period	612,740	707,274
Cash and cash equivalents at end of period	617,170	683,191
Cash paid during the year for:
Interest paid	4,054	3,668
Income taxes paid	6,524	6,150
Other non cash items:
Transfer of loans to other real estate owned	492	787
Increase in dividends payable	7	7
Change in unrealized (loss) gain on securities available for sale-gross of deferred taxes	(7,160)	1,179
Change in deferred tax effect on unrealized (loss) gain on securities available for sale	1,858	(472)
Amortization of net actuarial (gain) loss and prior service cost on pension and postretirement plans	(49)	(40)
Change in deferred tax effect of amortization of net actuarial (gain) loss and prior service cost on pension and postretirement plans	$ 13	$ 16

Financial Statement Presentatio

Financial Statement Presentation	3 Months Ended
	Mar. 31, 2018
Financial Statement Presentation [Abstract]
Financial Statement Presentation	(1) Financial Statement Presentation The unaudited Consolidated Interim Financial Statements of TrustCo Bank Corp NY (the “Company” or “TrustCo”) include the accounts of the subsidiaries after elimination of all significant intercompany accounts and transactions. Prior period amounts are reclassified when necessary to conform to the current period presentation. The net income reported for the three months ended March 31, 2018 is not necessarily indicative of the results that may be expected for the year ending December 31, 2018, or any interim periods. These financial statements consider events that occurred through the date of filing. In the opinion of the management of the Company, the accompanying unaudited Consolidated Interim Financial Statements contain all recurring adjustments necessary to present fairly the financial position as of March 31, 2018, the results of operations and cash flows for the three months ended March 31, 2018 and 2017. The accompanying Consolidated Interim Financial Statements should be read in conjunction with the Company’s year-end Consolidated Financial Statements, including notes thereto, which are included in the Company's Annual Report on Form 10-K for the year ended December 31, 2017. The accompanying consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and, therefore, do not include all information and notes necessary for a complete presentation of financial position, results of operations and cash flow activity required in accordance with accounting principles generally accepted in the United States.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share	(2) Earnings Per Share The Company computes earnings per share in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 260, Earnings Per Share (in thousands, except per share data) For the three months ended March 31: 2018 2017 Net income $ 14,808 10,947 Weighted average common shares 96,353 95,879 Stock Options 131 108 Weighted average common shares including potential dilutive shares 96,484 95,987 Basic EPS $ 0.154 0.114 Diluted EPS $ 0.153 0.114 For the three months ended March 31, 2018, there were no antidilutive stock options excluded from diluted earnings. For the three months ended March 31, 2017 the weighted average number of antidilutive stock options excluded from diluted earnings per share was approximately 553 thousand.

Benefit Plans

Benefit Plans	3 Months Ended
	Mar. 31, 2018
Benefit Plans [Abstract]
Benefit Plans	(3) Benefit Plans The table below outlines the components of the Company's net periodic benefit recognized during the three months ended March 31, 2018 and 2017 for its pension and other postretirement benefit plans: For the three months ended March 31, Pension Benefits Other Postretirement Benefits (dollars in thousands) 2018 2017 2018 2017 Service cost $ 11 11 26 28 Interest cost 326 329 54 56 Expected return on plan assets (687 ) (686 ) (190 ) (191 ) Amortization of net loss (gain) 17 23 (89 ) (86 ) Amortization of prior service cost - - 23 23 Net periodic benefit $ (333 ) (323 ) (176 ) (170 ) The Company does not expect to make contributions to its pension and postretirement benefit plans in 2018. As of March 31, 2018, no contributions have been made, however, this decision is reviewed each quarter and is subject to change based upon market conditions. Since 2003, the Company has not subsidized retiree medical insurance premiums. However, it continues to provide medical benefits and postretirement medical benefits to a limited number of current and retired executives in accordance with the terms of their employment contracts.

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2018
Investment Securities [Abstract]
Investment Securities	(4) Investment Securities (a) Securities available for sale The amortized cost and fair value of the securities available for sale are as follows: (dollars in thousands) March 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. government sponsored enterprises $ 154,861 - 3,534 151,327 State and political subdivisions 515 10 - 525 Corporate bonds 35,347 - 120 35,227 Mortgage backed securities and collateralized mortgage obligations - residential 307,679 75 10,121 297,633 Small Business Administration- guaranteed participation securities 66,153 - 2,040 64,113 Mortgage backed securities and collateralized mortgage obligations - commercial 9,743 - 170 9,573 Other 685 - - 685 Total Securities Available for Sale $ 574,983 $ 85 $ 15,985 $ 559,083 (dollars in thousands) December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. government sponsored enterprises $ 139,890 27 2,066 137,851 State and political subdivisions 515 10 - 525 Mortgage backed securities and collateralized mortgage obligations - residential 320,614 84 4,715 315,983 Corporate bonds 40,270 - 108 40,162 Small Business Administration- guaranteed participation securities 68,921 - 1,862 67,059 Mortgage backed securities and collateralized mortgage obligations - commercial 9,810 - 110 9,700 Other 685 - - 685 Total Securities Available for Sale $ 580,705 121 8,861 571,965 The following table distributes the available for sale security portfolio as of March 31, 2018, based on the securities’ final maturity. Actual maturities may differ because of securities prepayments and the right of certain issuers to call or prepay their obligations without penalty. Securities not due at a single maturity date are presented separately: (dollars in thousands) Amortized Cost Fair Value Due in one year or less $ 30,717 30,617 Due in one year through five years 150,597 147,053 Due after five years through ten years 10,094 10,094 Mortgage backed securities and collateralized mortgage obligations - residential 307,679 297,633 Small Business Administration- guaranteed participation securities 66,153 64,113 Mortgage backed securities and collateralized mortgage obligations - commercial 9,743 9,573 $ 574,983 559,083 Gross unrealized losses on securities available for sale and the related fair values aggregated by the length of time that individual securities have been in an unrealized loss position, were as follows: (dollars in thousands) March 31, 2018 Less than 12 months 12 months or more Total Fair Value Gross Unreal. Loss Fair Value Gross Unreal. Loss Fair Value Gross Unreal. Loss U.S. government sponsored enterprises $ 59,076 895 82,251 2,639 141,327 3,534 Mortgage backed securities and collateralized mortgage obligations - residential 45,441 1,221 250,721 8,900 296,162 10,121 Corporate bonds 5,218 19 30,008 101 35,227 120 Small Business Administration- guaranteed participation securities - - 64,113 2,040 64,113 2,040 Mortgage backed securities and collateralized mortgage obligations - commercial - - 9,573 170 9,573 170 Total $ 109,735 2,135 436,666 13,850 546,401 15,985 (dollars in thousands) December 31, 2017 Less than 12 months 12 months or more Total Fair Value Gross Unreal. Loss Fair Value Gross Unreal. Loss Fair Value Gross Unreal. Loss U.S. government sponsored enterprises $ 29,734 266 98,090 1,800 127,824 2,066 Mortgage backed securities and collateralized mortgage obligations - residential 48,080 371 266,394 4,344 314,474 4,715 Corporate bonds - - 40,162 108 40,162 108 Small Business Administration- guaranteed participation securities - - 67,059 1,862 67,059 1,862 Mortgage backed securities and collateralized mortgage obligations - commercial - - 9,700 110 9,700 110 Total $ 77,814 637 481,405 8,224 559,219 8,861 There were no gross realized gains or losses from calls of available for sale securities during the three months ended March 31, 2018 and 2017. There were no sales of securities available for sale during the three months ended March 31, 2018 and 2017. There was $25.0 million and $20.7 million in proceeds from calls of securities available for sale during the three months ended March 31, 2018 and 2017, respectively. (b) Held to maturity securities The amortized cost and fair value of the held to maturity securities are as follows: (dollars in thousands) March 31, 2018 Amortized Cost Gross Unrecognized Gains Gross Unrecognized Losses Fair Value Mortgage backed securities and collateralized mortgage obligations - residential $ 26,174 882 62 26,994 Total held to maturity $ 26,174 882 62 26,994 (dollars in thousands) December 31, 2017 Amortized Cost Gross Unrecognized Gains Gross Unrecognized Losses Fair Value Mortgage backed securities and collateralized mortgage obligations - residential $ 27,551 1,150 - 28,701 Total held to maturity $ 27,551 1,150 - 28,701 The following table distributes the held to maturity portfolio as of March 31, 2018, based on the securities’ final maturity. Actual maturities may differ because of securities prepayments and the right of certain issuers to call or prepay their obligations without penalty. Securities not due at a single maturity date are presented separately: (dollars in thousands) Amortized Cost Fair Value Mortgage backed securities and collateralized mortgage obligations - residential 26,174 26,994 Total held to maturity $ 26,174 26,994 Gross unrecognized losses on securities held to maturity and the related fair values aggregated by the length of time that individual securities have been in an unrecognized loss position, were as follows: (dollars in thousands) March 31, 2018 Less than 12 months 12 months or more Total Fair Value Gross Unrecog. Loss Fair Value Gross Unrecog. Loss Fair Value Gross Unrecog. Loss Mortgage backed securities and collateralized mortgage obligations - residential 9,539 62 - - 9,539 62 Total $ 9,539 62 - - 9,539 62 There were no unrecognized losses on held to maturity investments as of December 31, 2017. There were no sales or transfers of held to maturity securities during the three months ended March 31, 2018 and 2017 . (c) Other-Than-Temporary Impairment Management evaluates securities for other-than-temporary impairment (“OTTI”) at least on a quarterly basis, and more frequently when economic or market conditions warrant such an evaluation. The investment securities portfolio is evaluated for OTTI by segregating the portfolio by type and applying the appropriate OTTI model. Investment securities classified as available for sale or held to maturity are evaluated for OTTI under ASC 320 “Investments – Debt and Equity Securities.” In determining OTTI under the FASB ASC 320 model, management considers many factors, including: (1) the length of time and the extent to which the fair value has been less than cost, (2) the financial condition and near-term prospects of the issuer, (3) whether the market decline was affected by macroeconomic conditions, and (4) whether the Company has the intent to sell the debt security or more likely than not will be required to sell the debt security before its anticipated recovery. The assessment of whether any other-than-temporary decline exists involves a high degree of subjectivity and judgment and is based on the information available to management at a point in time. When OTTI occurs, the amount of the OTTI recognized in earnings depends on whether management intends to sell the security or it is more likely than not it will be required to sell the security before recovery of its amortized cost basis. If management intends to sell or it is more likely than not it will be required to sell the security before recovery of its amortized cost basis, the OTTI shall be 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 management does not intend to sell the security and it is not more likely than not that the entity will be required to sell the security before recovery of its amortized cost basis, the OTTI on securities shall be separated into the amount representing the credit loss and the amount related to all other factors. The amount of the total OTTI related to the credit loss is determined based on the present value of cash flows expected to be collected and is recognized in earnings. The amount of the total OTTI related to other factors is recognized in other comprehensive income, net of applicable taxes. The previous amortized cost basis less the OTTI recognized in earnings becomes the new amortized cost basis of the investment. As of March 31, 2018, the Company’s security portfolio included certain securities which were in an unrealized loss position. All such securities with the exception of corporate bonds were issuances from U.S. government sponsored entities. As it relates to corporate bonds, the company monitors the credit rating of the issuers and all were investment grade. The declines in fair value are attributable to changes in interest rates, and not credit quality, and because the Company does not have the intent to sell these securities and it is likely that it will not be required to sell the securities before their anticipated recovery, the Company does not consider these securities to be other-than-temporarily impaired at March 31, 2018 .

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses	3 Months Ended
	Mar. 31, 2018
Loans and Allowance for Loan Losses [Abstract]
Loans and Allowance for Loan Losses	(5) Loans and Allowance for Loan Losses March 31, 2018 (dollars in thousands) New York and other states* Florida Total Commercial: Commercial real estate $ 149,357 11,709 161,066 Other 23,459 604 24,063 Real estate mortgage - 1 to 4 family: First mortgages 2,305,510 784,004 3,089,514 Home equity loans 67,841 14,193 82,034 Home equity lines of credit 257,714 44,171 301,885 Installment 7,405 1,008 8,413 Total loans, net $ 2,811,286 855,689 3,666,975 Less: Allowance for loan losses 44,379 Net loans $ 3,622,596 December 31, 2017 (dollars in thousands) New York and other states* Florida Total Commercial: Commercial real estate $ 149,368 12,524 161,892 Other 23,606 709 24,315 Real estate mortgage - 1 to 4 family: First mortgages 2,286,148 765,929 3,052,077 Home equity loans 66,455 13,989 80,444 Home equity lines of credit 263,275 45,641 308,916 Installment 7,141 1,622 8,763 Total loans, net $ 2,795,993 840,414 3,636,407 Less: Allowance for loan losses 44,170 Net loans $ 3,592,237 *Includes New York, New Jersey, Vermont and Massachusetts At March 31, 2018 and December 31, 2017, the Company had approximately $28.4 million and $30.9 million of real estate construction loans, respectively. Of the $28.4 million in real estate construction loans at March 31, 2018, approximately $20.4 million are secured by first mortgages to residential borrowers while approximately $8.0 million were to commercial borrowers for residential construction projects. Of the $30.9 million in real estate construction loans at December 31, 2017, approximately $21.1 million are secured by first mortgages to residential borrowers while approximately $9.8 million were to commercial borrowers for residential construction projects. The vast majority of construction loans are in the Company’s New York market. TrustCo lends in the geographic territory of its branch locations in New York, Florida, Massachusetts, New Jersey and Vermont. Although the loan portfolio is diversified, a portion of its debtors’ ability to repay depends significantly on the economic conditions prevailing in the respective geographic territory. The following tables present the recorded investment in non-accrual loans by loan class: March 31, 2018 (dollars in thousands) New York and other states Florida Total Loans in non-accrual status: Commercial: Commercial real estate $ 1,100 - 1,100 Other 113 - 113 Real estate mortgage - 1 to 4 family: First mortgages 17,687 2,025 19,712 Home equity loans 200 - 200 Home equity lines of credit 3,538 128 3,666 Installment 19 4 23 Total non-accrual loans 22,657 2,157 24,814 Restructured real estate mortgages - 1 to 4 family 38 - 38 Total nonperforming loans $ 22,695 2,157 24,852 December 31, 2017 (dollars in thousands) New York and other states Florida Total Loans in non-accrual status: Commercial: Commercial real estate $ 1,443 - 1,443 Other 100 - 100 Real estate mortgage - 1 to 4 family: First mortgages 16,654 2,259 18,913 Home equity loans 93 - 93 Home equity lines of credit 3,603 130 3,733 Installment 57 - 57 Total non-accrual loans 21,950 2,389 24,339 Restructured real estate mortgages - 1 to 4 family 38 - 38 Total nonperforming loans $ 21,988 2,389 24,377 The Company transfers loans to other real estate owned, at fair value less cost to sell, in the period the Company obtains physical possession of the property (through legal title or through a deed in lieu). As of March 31, 2018 and December 31, 2017, other real estate owned included $2.2 million and $2.7 million of residential foreclosed properties, respectively. In addition, non-accrual residential mortgage loans that are in the process of foreclosure had a recorded investment of $12.7 million and $12 . The following tables present the aging of the recorded investment in past due loans by loan class and by region as of March 31, 2018 and December 31, 2017: New York and other states: March 31, 2018 (dollars in thousands) 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due Total 30+ days Past Due Current Total Loans Commercial: Commercial real estate $ - 136 1,021 1,157 148,200 149,357 Other - - 113 113 23,346 23,459 Real estate mortgage - 1 to 4 family: First mortgages 4,831 759 9,633 15,223 2,290,287 2,305,510 Home equity loans - - 162 162 67,679 67,841 Home equity lines of credit 601 10 2,066 2,677 255,037 257,714 Installment 23 13 13 49 7,356 7,405 Total $ 5,455 918 13,008 19,381 2,791,905 2,811,286 Florida: (dollars in thousands) 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due Total 30+ days Past Due Current Total Loans Commercial: Commercial real estate $ - - - - 11,709 11,709 Other - - - - 604 604 Real estate mortgage - 1 to 4 family: First mortgages 243 103 940 1,286 782,718 784,004 Home equity loans - - - - 14,193 14,193 Home equity lines of credit 16 - 50 66 44,105 44,171 Installment 13 5 4 22 986 1,008 Total $ 272 108 994 1,374 854,315 855,689 Total: (dollars in thousands) 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due Total 30+ days Past Due Current Total Loans Commercial: Commercial real estate $ - 136 1,021 1,157 159,909 161,066 Other - - 113 113 23,950 24,063 Real estate mortgage - 1 to 4 family: First mortgages 5,074 862 10,573 16,509 3,073,005 3,089,514 Home equity loans - - 162 162 81,872 82,034 Home equity lines of credit 617 10 2,116 2,743 299,142 301,885 Installment 36 18 17 71 8,342 8,413 Total $ 5,727 1,026 14,002 20,755 3,646,220 3,666,975 New York and other states: December 31, 2017 (dollars in thousands) 30-59 Days Past Due 60-89 Days Past Due 90 + Days Past Due Total 30+ days Past Due Current Total Loans Commercial: Commercial real estate $ 183 174 1,332 1,689 147,679 149,368 Other - - 100 100 23,506 23,606 Real estate mortgage - 1 to 4 family: First mortgages 5,669 1,300 9,014 15,983 2,270,165 2,286,148 Home equity loans 6 - 45 51 66,404 66,455 Home equity lines of credit 489 18 2,139 2,646 260,629 263,275 Installment 46 17 25 88 7,053 7,141 Total $ 6,393 1,509 12,655 20,557 2,775,436 2,795,993 Florida: (dollars in thousands) 30-59 Days Past Due 60-89 Days Past Due 90 + Days Past Due Total 30+ days Past Due Current Total Loans Commercial: Commercial real estate $ - - - - 12,524 12,524 Other - - - - 709 709 Real estate mortgage - 1 to 4 family: First mortgages 277 - 1,404 1,681 764,248 765,929 Home equity loans - - - - 13,989 13,989 Home equity lines of credit - - - - 45,641 45,641 Installment 3 5 26 34 1,588 1,622 Total $ 280 5 1,430 1,715 838,699 840,414 Total: (dollars in thousands) 30-59 Days Past Due 60-89 Days Past Due 90 + Days Past Due Total 30+ days Past Due Current Total Loans Commercial: Commercial real estate $ 183 174 1,332 1,689 160,203 161,892 Other - - 100 100 24,215 24,315 Real estate mortgage - 1 to 4 family: First mortgages 5,946 1,300 10,418 17,664 3,034,413 3,052,077 Home equity loans 6 - 45 51 80,393 80,444 Home equity lines of credit 489 18 2,139 2,646 306,270 308,916 Installment 49 22 51 122 8,641 8,763 Total $ 6,673 1,514 14,085 22,272 3,614,135 3,636,407 At March 31, 2018 and December 31, 2017, there were no loans that were 90 days past due and still accruing interest. As a result, non-accrual loans include all loans 90 days or more past due as well as certain loans less than 90 days past due that were placed on non-accrual status for reasons other than delinquent status. There are no commitments to extend further credit on non - Activity in the allowance for loan losses by portfolio segment is summarized as follows: (dollars in thousands) For the three months ended March 31, 2018 Commercial Real Estate Mortgage- 1 to 4 Family Installment Total Balance at beginning of period $ 4,324 39,077 769 44,170 Loans charged off: New York and other states* - 131 71 202 Florida - - 3 3 Total loan chargeoffs - 131 74 205 Recoveries of loans previously charged off: New York and other states* 6 103 6 115 Florida - - - - Total recoveries 6 103 6 115 Net loans charged off (recoveries) (6 ) 28 68 90 Provision for loan losses (75 ) 310 64 300 Balance at end of period $ 4,255 39,359 765 44,379 (dollars in thousands) For the three months ended March 31, 2017 Commercial Real Estate Mortgage- 1 to 4 Family Installment Total Balance at beginning of period $ 4,929 38,231 730 43,890 Loans charged off: New York and other states* 72 430 41 543 Florida - 84 2 86 Total loan chargeoffs 72 514 43 629 Recoveries of loans previously charged off: New York and other states* 8 169 10 187 Florida - - - - Total recoveries 8 169 10 187 Net loans charged off 64 345 33 442 Provision for loan losses (55 ) 695 (40 ) 600 Balance at end of period $ 4,810 38,581 657 44,048 *Includes New York, New Jersey, Vermont and Massachusetts The Company has identified non - The following tables present the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method as of March 31, 2018 and December 31, 2017: March 31, 2018 (dollars in thousands) Commercial Loans 1-to-4 Family Residential Real Estate Installment Loans Total Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ - - - - Collectively evaluated for impairment 4,255 39,359 765 44,379 Total ending allowance balance $ 4,255 39,359 765 44,379 Loans: Individually evaluated for impairment $ 1,923 22,510 - 24,433 Collectively evaluated for impairment 183,206 3,450,923 8,413 3,642,542 Total ending loans balance $ 185,129 3,473,433 8,413 3,666,975 December 31, 2017 (dollars in thousands) Commercial Loans 1-to-4 Family Residential Real Estate Installment Loans Total Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ - - - - Collectively evaluated for impairment 4,324 39,077 769 44,170 Total ending allowance balance $ 4,324 39,077 769 44,170 Loans: Individually evaluated for impairment $ 2,248 22,032 - 24,280 Collectively evaluated for impairment 183,959 3,419,405 8,763 3,612,127 Total ending loans balance $ 186,207 3,441,437 8,763 3,636,407 A loan for which the terms have been modified, and for which the borrower is experiencing financial difficulties, is considered a TDR and is classified as impaired. TDR’s at March 31, 2018 and December 31, 2017 are measured at the present value of estimated future cash flows using the loan’s effective rate at inception or the fair value of the underlying collateral if the loan is considered collateral dependent. The following tables present impaired loans by loan class as of March 31, 2018 and December 31, 2017: New York and other states: March 31, 2018 (dollars in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Commercial: Commercial real estate $ 1,710 2,680 - 2,264 Other 213 213 - 107 Real estate mortgage - 1 to 4 family: First mortgages 16,177 16,940 - 16,075 Home equity loans 265 285 - 267 Home equity lines of credit 2,751 2,992 - 2,692 Total $ 21,116 23,110 - 21,405 Florida: (dollars in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Commercial: Commercial real estate $ - - - - Other - - - - Real estate mortgage - 1 to 4 family: First mortgages 2,687 2,793 - 2,694 Home equity loans 88 88 - 88 Home equity lines of credit 542 542 - 521 Total $ 3,317 3,423 - 3,303 Total: (dollars in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Commercial: Commercial real estate $ 1,710 2,680 - 2,264 Other 213 213 - 107 Real estate mortgage - 1 to 4 family: First mortgages 18,864 19,733 - 18,769 Home equity loans 353 373 - 355 Home equity lines of credit 3,293 3,534 - 3,213 Total $ 24,433 26,533 - 24,708 New York and other states: December 31, 2017 (dollars in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Commercial: Commercial real estate $ 2,148 3,120 - 2,711 Other 100 100 - 87 Real estate mortgage - 1 to 4 family: First mortgages 15,850 16,540 - 16,508 Home equity loans 270 291 - 263 Home equity lines of credit 2,606 2,847 - 2,193 Total $ 20,974 22,898 - 21,762 Florida: (dollars in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Commercial: Commercial real estate $ - - - - Other - - - - Real estate mortgage - 1 to 4 family: First mortgages 2,707 2,813 - 2,335 Home equity loans 89 89 - 92 Home equity lines of credit 510 510 - 561 Total $ 3,306 3,412 - 2,988 Total: (dollars in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Commercial: Commercial real estate $ 2,148 3,120 - 2,711 Other 100 100 - 87 Real estate mortgage - 1 to 4 family: First mortgages 18,557 19,353 - 18,843 Home equity loans 359 380 - 355 Home equity lines of credit 3,116 3,357 - 2,754 Total $ 24,280 26,310 - 24,750 The Company has not committed to lend additional amounts to customers with outstanding loans that are classified as impaired. Interest income recognized on impaired loans was not material during the three months ended March 31, 2018 and 2017 . As of March 31, 2018 and December 31, 2017 impaired loans included approximately $11.1 million and $11.8 million of loans in accruing status that were identified as TDR’s in accordance with regulatory guidance related to Chapter 7 bankruptcy loans . Management evaluates impairment on impaired loans on a quarterly basis. If, during this evaluation, impairment of the loan is identified, a charge off is taken at that time. As a result, as of March 31, 2018 and December 31, 2017, based upon management’s evaluation and due to the sufficiency of chargeoffs taken, none of the allowance for loan losses has been allocated to a specific impaired loan(s). The following table presents, by class, loans that were modified as TDR’s: Three months ended 3/31/2018 Three months ended 3/31/2017 New York and other states*: Pre-Modification Post-Modification Pre-Modification Post-Modification (dollars in thousands) Number of Contracts Outstanding Recorded Investment Outstanding Recorded Investment Number of Contracts Outstanding Recorded Investment Outstanding Recorded Investment Real estate mortgage - 1 to 4 family: First mortgages 4 $ 642 $ 642 11 $ 1,947 $ 1,947 Home equity loans - - - 1 13 13 Home equity lines of credit 3 240 240 4 158 158 Total 7 $ 882 $ 882 16 $ 2,118 $ 2,118 Florida: Pre-Modification Post-Modification Pre-Modification Post-Modification (dollars in thousands) Number of Contracts Outstanding Recorded Investment Outstanding Recorded Investment Number of Contracts Outstanding Recorded Investment Outstanding Recorded Investment Real estate mortgage - 1 to 4 family: First mortgages - - - 1 $ 80 $ 80 Home equity lines of credit - - - 1 70 70 Total - $ - $ - 2 $ 150 $ 150 The addition of these TDR’s did not have a significant impact on the allowance for loan losses . In situations where the Bank considers a loan modification, management determines whether the borrower is experiencing financial difficulty by performing an evaluation of the probability that the borrower will be in payment default on any of its debt in the foreseeable future without the modification. This evaluation is performed under the Company’s underwriting policy. Generally, the modification of the terms of loans was the result of the borrower filing for bankruptcy protection. Chapter 13 bankruptcies generally include the deferral of all past due amounts for a period of generally 60 months in accordance with the bankruptcy court order. In the case of Chapter 7 bankruptcies, as previously noted, even though there is no modification of terms, the borrowers’ debt to the Company was discharged and they did not reaffirm the debt. A loan is considered to be in payment default once it is 90 days contractually past due under the modified terms. In situations involving a borrower filing for Chapter 13 bankruptcy protection, however, a loan is considered to be in payment default once it is 30 days contractually past due, consistent with the treatment by the bankruptcy court. The following table presents, by class, TDR’s that defaulted during the three months ended March 31, 2018 and 2017 which had been modified within the last twelve months: Three months ended 3/31/2018 Three months ended 3/31/2017 New York and other states*: Number of Recorded Number of Recorded (dollars in thousands) Contracts Investment Contracts Investment Real estate mortgage - 1 to 4 family: First mortgages - $ - - $ - Home equity lines of credit 1 3 - - Total 1 $ 3 - $ - Florida: (dollars in thousands) Number of Contracts Recorded Investment Number of Contracts Recorded Investment Real estate mortgage - 1 to 4 family: First mortgages 1 $ 72 1 $ 80 Home equity lines of credit - - 1 70 Total 1 $ 72 2 $ 150 The TDR’s that subsequently defaulted described above did not have a material impact on the allowance for loan losses. The Company categorizes commercial loans into risk categories based on relevant information about the ability of borrowers to service their debt, such as: current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. On at least an annual basis, the Company’s loan grading process analyzes non-homogeneous loans, such as commercial and commercial real estate loans, individually by grading the loans based on credit risk. The loan grades assigned to all loan types are tested by the Company’s internal loan review department in accordance with the Company’s internal loan review policy. The Company uses the following definitions for classified loans: Special Mention Substandard Doubtful Loans not meeting the criteria above that are analyzed individually as part of the above described process are considered to be “pass” rated loans. As of March 31, 2018 and December 31, 2017, and based on the most recent analysis performed, the risk category of loans by class of loans is as follows: March 31, 2018 New York and other states: (dollars in thousands) Pass Classified Total Commercial: Commercial real estate $ 142,463 6,894 149,357 Other 21,842 1,617 23,459 $ 164,305 8,511 172,816 Florida: (dollars in thousands) Pass Classified Total Commercial: Commercial real estate $ 11,709 - 11,709 Other 604 - 604 $ 12,313 - 12,313 Total: (dollars in thousands) Pass Classified Total Commercial: Commercial real estate $ 154,172 6,894 161,066 Other 22,446 1,617 24,063 $ 176,618 8,511 185,129 December 31, 2017 New York and other states: (dollars in thousands) Pass Classified Total Commercial: Commercial real estate $ 140,806 8,562 149,368 Other 21,936 1,670 23,606 $ 162,742 10,232 172,974 Florida: (dollars in thousands) Pass Classified Total Commercial: Commercial real estate $ 12,406 118 12,524 Other 709 - 709 $ 13,115 118 13,233 Total: (dollars in thousands) Pass Classified Total Commercial: Commercial real estate $ 153,212 8,680 161,892 Other 22,645 1,670 24,315 $ 175,857 10,350 186,207 Included in classified loans in the above tables are impaired loans of $1.9 million and $2.2 million at March 31, 2018 and December 31, 2017, respectively. For homogeneous loan pools, such as residential mortgages, home equity lines of credit, and installment loans, the Company uses payment status to identify the credit risk in these loan portfolios. Payment status is reviewed on a daily basis by the Bank’s collection area and on a monthly basis with respect to determining the adequacy of the allowance for loan losses. The payment status of these homogeneous pools as of March 31, 2018 and December 31, 2017 is included in the aging of the recorded investment of the past due loans table. In addition, the total nonperforming portion of these homogeneous loan pools as of March 31, 2018 and December 31, 2017 is presented in the non-accrual loans table.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2018
Fair Value of Financial Instruments [Abstract]
Fair Value of Financial Instruments	(6) Fair Value of Financial Instruments Fair value measurements (ASC 820) defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. ASC 820 also establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard describes three levels of inputs that may be used to measure fair values: Level 1 – Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity can access as of the measurement date. Level 2 – Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. Level 3 – Significant unobservable inputs that reflect a company’s own assumptions about the value that market participants would use in pricing an asset or liability. The Company used the following methods and significant assumptions to estimate the fair value of assets and liabilities: Securities Available for Sale Other Real Estate Owned Impaired Loans Indications of value for both collateral-dependent impaired loans and other real estate owned are obtained from third party providers or the Company’s internal Appraisal Department. All indications of value are reviewed for reasonableness by a member of the Appraisal Department for the assumptions and approaches utilized in the appraisal as well as the overall resulting fair value via comparison with independent data sources such as recent market data or industry-wide statistics. Assets and liabilities measured at fair value under ASC 820 on a recurring basis are summarized below: Fair Value Measurements at March 31, 2018 Using: Carrying Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (dollars in thousands) Securities available for sale: U.S. government sponsored enterprises $ 151,327 $ - $ 151,327 $ - State and political subdivisions 525 - 525 - Mortgage backed securities and collateralized mortgage obligations - residential 297,633 - 297,633 - Corporate bonds 35,227 - 35,227 - Small Business Administration- guaranteed participation securities 64,113 - 64,113 - Mortgage backed securities and collateralized mortgage obligations - commercial 9,573 - 9,573 - Other securities 685 - 685 - Total securities available for sale $ 559,083 - 559,083 - Fair Value Measurements at December 31, 2017 Using: Carrying Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (dollars in thousands) Securities available for sale: U.S. government sponsored enterprises $ 137,851 $ - $ 137,851 $ - State and political subdivisions 525 - 525 - Mortgage backed securities and collateralized mortgage obligations - residential 315,983 - 315,983 - Corporate bonds 40,162 - 40,162 - Small Business Administration- guaranteed participation securities 67,059 - 67,059 - Mortgage backed securities and collateralized mortgage obligations - commercial 9,700 - 9,700 - Other securities 685 - 685 - Total securities available for sale $ 571,965 - 571,965 - There were no transfers between Level 1 and Level 2 during the three months ended March 31, 2018 and 2017 . Assets measured at fair value on a non-recurring basis are summarized below: Fair Value Measurements at March 31, 2018 Using: Carrying Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Valuation technique Unobservable inputs Range (Weighted Average) (dollars in thousands) Other real estate owned $ 2,190 $ - $ - $ 2,190 Sales comparison approach Adjustments for differences between comparable sales 1% - 14% (7 %) Impaired loans: Real estate mortgage - 1 to 4 family 750 - - 750 Sales comparison approach Adjustments for differences between comparable sales 5% - 14% (10 %) Fair Value Measurements at December 31, 2017 Using: Carrying Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Valuation technique Unobservable inputs Range (Weighted Average) (dollars in thousands) Other real estate owned $ 3,246 $ - $ - $ 3,246 Sales comparison approach Adjustments for differences between comparable sales 1% - 14% (7 %) Impaired loans: Real estate mortgage - 1 to 4 family 844 - - 844 Sales comparison approach Adjustments for differences between comparable sales 5% - 14% (10 %) Other real estate owned, that is carried at fair value less costs to sell was approximately $2.2 million at March 31, 2018 and consisted of $358 thousand of commercial real estate and $1.8 million of residential real estate properties. Valuation charges of $199 thousand are included in earnings for the three months ended March 31, 2018. Of the total impaired loans of $24.8 million at March 31, 2018, $750 thousand are collateral dependent and are carried at fair value measured on a non-recurring basis. Due to the sufficiency of charge offs taken on these loans and the adequacy of the underlying collateral, there were no specific valuation allowances for these loans at March 31, 2018. Gross charge offs related to residential impaired loans included in the table above were $36 thousand for the three months ended March 31, 2018 . Other real estate owned, that is carried at fair value less costs to sell, was approximately $3.2 million at December 31, 2017 and consisted of $541 thousand of commercial real estate and $2.7 million of residential real estate properties. A valuation charge of $1.1 million is included in earnings for the year ended December 31, 2017 . Of the total impaired loans of $24 . . The carrying amounts and estimated fair values (represents exit price) of financial instruments, at March 31, 2018 and December 31, 2017 are as follows: (dollars in thousands) Fair Value Measurements at Carrying March 31, 2018 Using: Value Level 1 Level 2 Level 3 Total Financial assets: Cash and cash equivalents $ 617,170 617,170 - - 617,170 Securities available for sale 559,083 35 559,048 - 559,083 Held to maturity securities 26,174 - 26,994 - 26,994 Federal Reserve Bank and Federal Home Loan Bank stock 8,779 N/A N/A N/A N/A Net loans 3,622,596 - - 3,598,673 3,598,673 Accrued interest receivable 10,579 85 2,611 7,883 10,579 Financial liabilities: Demand deposits 403,782 403,782 - - 403,782 Interest bearing deposits 3,831,298 2,721,854 1,122,106 - 3,843,960 Short-term borrowings 203,910 - 203,910 - 203,910 Accrued interest payable 665 75 590 - 665 (dollars in thousands) Fair Value Measurements at Carrying December 31, 2017 Using: Value Level 1 Level 2 Level 3 Total Financial assets: Cash and cash equivalents $ 612,740 612,740 - - 612,740 Securities available for sale 571,965 35 571,930 - 571,965 Held to maturity securities 27,551 - 28,701 - 28,701 Federal Reserve Bank and Federal Home Loan Bank stock 8,779 N/A N/A N/A N/A Net loans 3,692,237 - - 3,598,213 3,598,213 Accrued interest receivable 11,441 243 2,440 8,758 11,441 Financial liabilities: Demand deposits 398,399 398,399 - - 398,399 Interest bearing deposits 3,774,927 2,707,961 1,076,213 - 3,784,174 Short-term borrowings 242,991 - 242,991 - 242,991 Accrued interest payable 537 77 460 - 537

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Abstract]
Accumulated Other Comprehensive Income (Loss)	(7) Accumulated Other Comprehensive Income (Loss) The following is a summary of the accumulated other comprehensive (loss) income balances, net of tax: Three months ended 3/31/18 (dollars in thousands) Balance at 12/31/2017 Other Comprehensive Income (loss)- Before Reclassifications Amount reclassified from Accumulated Other Comprehensive Income Other Comprehensive Income (loss)- Three months ended 3/31/2018 Balance at 3/31/2018 Net unrealized holding gain (loss) on securities available for sale, net of tax $ (5,030 ) (5,302 ) - (5,302 ) (10,332 ) Net change in net actuarial (gain) loss and prior service cost on pension and Adjustment postretirement benefit plans, net of tax 3,224 - (36 ) (36 ) 3,188 Tax Cuts and Jobs Act of 2017, Reclassification from AOCI to Retained Earnings, Tax Effect - - (1,346 ) - (1,346 ) Accumulated other comprehensive income (loss), net of tax $ (1,806 ) (5,302 ) (1,382 ) (5,338 ) (8,490 ) (dollars in thousands) Three months ended 3/31/2017 Balance at 12/31/2016 Other Comprehensive Income (loss)- Before Reclassifications Amount reclassified from Accumulated Other Comprehensive Income Other Comprehensive Income (loss)- Three months ended 3/31/2016 Balance at 3/31/2017 Net unrealized holding gain (loss) on securities available for sale, net of tax $ (6,762 ) 707 - 707 (6,055 ) Net change in net actuarial (gain) loss and prior service cost on pension and postretirement benefit plans, net of tax 511 - (24 ) (24 ) 487 Accumulated other comprehensive income (loss), net of tax $ (6,251 ) 707 (24 ) 683 (5,568 ) The following represents the reclassifications out of accumulated other comprehensive income (loss) for the three months ended March 31, 2018 and 2017: (dollars in thousands) Three months ended March 31, 2018 2017 Affected Line Item in Statements Amortization of pension and postretirement benefit items Amortization of net actuarial (gain) loss $ (72 ) $ (63 ) Salaries and employee benefits Amortization of prior service cost 23 23 Salaries and employee benefits Income tax benefit 13 16 Income taxes Net of tax (36 ) (24 ) Total reclassifications, net of tax $ (36 ) $ (24 )

Revenue from Contracts with Cus

Revenue from Contracts with Customers	3 Months Ended
	Mar. 31, 2018
Revenue from Contracts with Customers [Abstract]
Revenue from Contracts with Customers	(8) Revenue from Contracts with Customers All of the Company’s revenue from contracts with customers in the scope of ASC 606 is recognized within Non-Interest Income. The following table presents the Company’s sources of Non-Interest Income for the three months ended March 31, 2018 and 2017. Items outside the scope of ASC 606 are noted as such. (dollars in thousands) Three months ended March 31, 2018 2017 Non-interest income Service Charges on Deposits Overdraft fees $ 827 $ 859 Other 114 79 Interchange Income 1,306 1,266 Wealth management fees 1,815 1,858 Other (a) 617 665 Total non-interest income $ 4,679 $ 4,727 (a) Not within the scope of ASC 606. A description of the Company’s revenue streams accounted for ASC 606 follows: Service charges on Deposit Accounts Interchange Income: . Wealth Management fees: Gains/Losses on Sales of Other Real Estate Owned "OREO":

New Accounting Pronouncements

New Accounting Pronouncements	3 Months Ended
	Mar. 31, 2018
New Accounting Pronouncements [Abstract]
New Accounting Pronouncements	(9) New Accounting Pronouncements In May 2014, the FASB issued Accounting Standards Update (“ASU”) 2014-09, “Revenue from Contracts with Customers (Topic 606)” which implements a common revenue standard that clarifies the principles for recognizing revenue. The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, an entity should apply the following steps: (i) identify the contract(s) with a customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract and (v) recognize revenue when (or as) the entity satisfies a performance obligation. The Company has adopted this ASU on January 1, 2018. Upon adoption the Company determined that there were no accumulated adjustments needed and no changes to the patterns on how the company recognized revenue. The Company did add disclosures for the items in-scope as described in note 8. In January 2016, the FASB issued ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities” which amended existing guidance to improve accounting standards for financial instruments including clarification and simplification of accounting and disclosure requirements and the requirement for public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. The ASU was adopted on January 1, 2018, and does not significantly impact the Company’s consolidated financial statements. The Company has amended disclosures to comply with the exit price notion as required under the ASU for the period ended March 31, 2018. In February 2018, the FASB issued ASU 2018-02, “Income statement – Reporting Comprehensive Income (Topic 220) Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income” which will allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. These amendments are effective for all entities for fiscal years beginning after December 15, 2018. For Interim periods within those fiscal years, early adoption of the amendment is permitted including public business entities for reporting periods for which financial statements have not yet been issued. The Company did adopt the ASU in the first quarter of 2018 and reclassified the stranded tax effect in accumulated other comprehensive income to retained earnings in the period ended March 31, 2018. In February 2016, the FASB issued ASU No. 2016-02, “Leases” which amended existing guidance to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. These amendments are effective for public business entities for annual periods and interim periods within those annual periods beginning after December 15, 2018. The Company is evaluating the impact of ASU No. 2016-02 on its consolidated financial statements. In June 2016, the FASB released ASU 2016-13, “Financial Instruments – Credit Losses” which amended existing guidance to replace current generally accepted accounting principles used to measure a reporting entity’s credit losses. The main objective of this update is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. To achieve this objective, the amendments in this update replace the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. These amendments are effective for public business entities for annual periods and interim periods within those annual periods beginning after December 15, 2019. The ASU represents a significant departure from current GAAP and the Company is evaluating the impact of the ASU on its consolidated financial statements, which includes developing a roadmap for implementation of the new standard.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Reconciliation of component parts of earnings per share	A reconciliation of the component parts of earnings per share for the three months ended March 31, 2018 and 2017 is as follows: (in thousands, except per share data) For the three months ended March 31: 2018 2017 Net income $ 14,808 10,947 Weighted average common shares 96,353 95,879 Stock Options 131 108 Weighted average common shares including potential dilutive shares 96,484 95,987 Basic EPS $ 0.154 0.114 Diluted EPS $ 0.153 0.114

Benefit Plans (Tables)

Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 2018
Benefit Plans [Abstract]
Components of Company's net periodic benefit	The table below outlines the components of the Company's net periodic benefit recognized during the three months ended March 31, 2018 and 2017 for its pension and other postretirement benefit plans: For the three months ended March 31, Pension Benefits Other Postretirement Benefits (dollars in thousands) 2018 2017 2018 2017 Service cost $ 11 11 26 28 Interest cost 326 329 54 56 Expected return on plan assets (687 ) (686 ) (190 ) (191 ) Amortization of net loss (gain) 17 23 (89 ) (86 ) Amortization of prior service cost - - 23 23 Net periodic benefit $ (333 ) (323 ) (176 ) (170 )

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2018
Investment Securities [Abstract]
Amortized cost and fair value of the securities available for sale	The amortized cost and fair value of the securities available for sale are as follows: (dollars in thousands) March 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. government sponsored enterprises $ 154,861 - 3,534 151,327 State and political subdivisions 515 10 - 525 Corporate bonds 35,347 - 120 35,227 Mortgage backed securities and collateralized mortgage obligations - residential 307,679 75 10,121 297,633 Small Business Administration- guaranteed participation securities 66,153 - 2,040 64,113 Mortgage backed securities and collateralized mortgage obligations - commercial 9,743 - 170 9,573 Other 685 - - 685 Total Securities Available for Sale $ 574,983 $ 85 $ 15,985 $ 559,083 (dollars in thousands) December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. government sponsored enterprises $ 139,890 27 2,066 137,851 State and political subdivisions 515 10 - 525 Mortgage backed securities and collateralized mortgage obligations - residential 320,614 84 4,715 315,983 Corporate bonds 40,270 - 108 40,162 Small Business Administration- guaranteed participation securities 68,921 - 1,862 67,059 Mortgage backed securities and collateralized mortgage obligations - commercial 9,810 - 110 9,700 Other 685 - - 685 Total Securities Available for Sale $ 580,705 121 8,861 571,965
Investment [Line Items]
Amortized cost and fair value of the held to maturity securities	The amortized cost and fair value of the held to maturity securities are as follows: (dollars in thousands) March 31, 2018 Amortized Cost Gross Unrecognized Gains Gross Unrecognized Losses Fair Value Mortgage backed securities and collateralized mortgage obligations - residential $ 26,174 882 62 26,994 Total held to maturity $ 26,174 882 62 26,994 (dollars in thousands) December 31, 2017 Amortized Cost Gross Unrecognized Gains Gross Unrecognized Losses Fair Value Mortgage backed securities and collateralized mortgage obligations - residential $ 27,551 1,150 - 28,701 Total held to maturity $ 27,551 1,150 - 28,701
Securities Available for Sale [Member]
Investment [Line Items]
Debt securities based on the securities contractual maturity	The following table distributes the available for sale security portfolio as of March 31, 2018, based on the securities’ final maturity. Actual maturities may differ because of securities prepayments and the right of certain issuers to call or prepay their obligations without penalty. Securities not due at a single maturity date are presented separately: (dollars in thousands) Amortized Cost Fair Value Due in one year or less $ 30,717 30,617 Due in one year through five years 150,597 147,053 Due after five years through ten years 10,094 10,094 Mortgage backed securities and collateralized mortgage obligations - residential 307,679 297,633 Small Business Administration- guaranteed participation securities 66,153 64,113 Mortgage backed securities and collateralized mortgage obligations - commercial 9,743 9,573 $ 574,983 559,083
Gross unrealized losses on investment securities and the related fair values aggregated by the length of time that individual securities have been in an unrealized loss position	Gross unrealized losses on securities available for sale and the related fair values aggregated by the length of time that individual securities have been in an unrealized loss position, were as follows: (dollars in thousands) March 31, 2018 Less than 12 months 12 months or more Total Fair Value Gross Unreal. Loss Fair Value Gross Unreal. Loss Fair Value Gross Unreal. Loss U.S. government sponsored enterprises $ 59,076 895 82,251 2,639 141,327 3,534 Mortgage backed securities and collateralized mortgage obligations - residential 45,441 1,221 250,721 8,900 296,162 10,121 Corporate bonds 5,218 19 30,008 101 35,227 120 Small Business Administration- guaranteed participation securities - - 64,113 2,040 64,113 2,040 Mortgage backed securities and collateralized mortgage obligations - commercial - - 9,573 170 9,573 170 Total $ 109,735 2,135 436,666 13,850 546,401 15,985 (dollars in thousands) December 31, 2017 Less than 12 months 12 months or more Total Fair Value Gross Unreal. Loss Fair Value Gross Unreal. Loss Fair Value Gross Unreal. Loss U.S. government sponsored enterprises $ 29,734 266 98,090 1,800 127,824 2,066 Mortgage backed securities and collateralized mortgage obligations - residential 48,080 371 266,394 4,344 314,474 4,715 Corporate bonds - - 40,162 108 40,162 108 Small Business Administration- guaranteed participation securities - - 67,059 1,862 67,059 1,862 Mortgage backed securities and collateralized mortgage obligations - commercial - - 9,700 110 9,700 110 Total $ 77,814 637 481,405 8,224 559,219 8,861
Held to Maturity Securities [Member]
Investment [Line Items]
Debt securities based on the securities contractual maturity	The following table distributes the held to maturity portfolio as of March 31, 2018, based on the securities’ final maturity. Actual maturities may differ because of securities prepayments and the right of certain issuers to call or prepay their obligations without penalty. Securities not due at a single maturity date are presented separately: (dollars in thousands) Amortized Cost Fair Value Mortgage backed securities and collateralized mortgage obligations - residential 26,174 26,994 Total held to maturity $ 26,174 26,994
Gross unrealized losses on investment securities and the related fair values aggregated by the length of time that individual securities have been in an unrealized loss position	Gross unrecognized losses on securities held to maturity and the related fair values aggregated by the length of time that individual securities have been in an unrecognized loss position, were as follows: (dollars in thousands) March 31, 2018 Less than 12 months 12 months or more Total Fair Value Gross Unrecog. Loss Fair Value Gross Unrecog. Loss Fair Value Gross Unrecog. Loss Mortgage backed securities and collateralized mortgage obligations - residential 9,539 62 - - 9,539 62 Total $ 9,539 62 - - 9,539 62

Loans and Allowance for Loan 21

Loans and Allowance for Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2018
Loans and Allowance for Loan Losses [Abstract]
Recorded investment in loans by loan class	March 31, 2018 (dollars in thousands) New York and other states* Florida Total Commercial: Commercial real estate $ 149,357 11,709 161,066 Other 23,459 604 24,063 Real estate mortgage - 1 to 4 family: First mortgages 2,305,510 784,004 3,089,514 Home equity loans 67,841 14,193 82,034 Home equity lines of credit 257,714 44,171 301,885 Installment 7,405 1,008 8,413 Total loans, net $ 2,811,286 855,689 3,666,975 Less: Allowance for loan losses 44,379 Net loans $ 3,622,596 December 31, 2017 (dollars in thousands) New York and other states* Florida Total Commercial: Commercial real estate $ 149,368 12,524 161,892 Other 23,606 709 24,315 Real estate mortgage - 1 to 4 family: First mortgages 2,286,148 765,929 3,052,077 Home equity loans 66,455 13,989 80,444 Home equity lines of credit 263,275 45,641 308,916 Installment 7,141 1,622 8,763 Total loans, net $ 2,795,993 840,414 3,636,407 Less: Allowance for loan losses 44,170 Net loans $ 3,592,237 *Includes New York, New Jersey, Vermont and Massachusetts
Recorded investment in non-accrual loans by loan class	The following tables present the recorded investment in non-accrual loans by loan class: March 31, 2018 (dollars in thousands) New York and other states Florida Total Loans in non-accrual status: Commercial: Commercial real estate $ 1,100 - 1,100 Other 113 - 113 Real estate mortgage - 1 to 4 family: First mortgages 17,687 2,025 19,712 Home equity loans 200 - 200 Home equity lines of credit 3,538 128 3,666 Installment 19 4 23 Total non-accrual loans 22,657 2,157 24,814 Restructured real estate mortgages - 1 to 4 family 38 - 38 Total nonperforming loans $ 22,695 2,157 24,852 December 31, 2017 (dollars in thousands) New York and other states Florida Total Loans in non-accrual status: Commercial: Commercial real estate $ 1,443 - 1,443 Other 100 - 100 Real estate mortgage - 1 to 4 family: First mortgages 16,654 2,259 18,913 Home equity loans 93 - 93 Home equity lines of credit 3,603 130 3,733 Installment 57 - 57 Total non-accrual loans 21,950 2,389 24,339 Restructured real estate mortgages - 1 to 4 family 38 - 38 Total nonperforming loans $ 21,988 2,389 24,377
Aging of the recorded investment in past due loans by loan class and by region	The following tables present the aging of the recorded investment in past due loans by loan class and by region as of March 31, 2018 and December 31, 2017: New York and other states: March 31, 2018 (dollars in thousands) 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due Total 30+ days Past Due Current Total Loans Commercial: Commercial real estate $ - 136 1,021 1,157 148,200 149,357 Other - - 113 113 23,346 23,459 Real estate mortgage - 1 to 4 family: First mortgages 4,831 759 9,633 15,223 2,290,287 2,305,510 Home equity loans - - 162 162 67,679 67,841 Home equity lines of credit 601 10 2,066 2,677 255,037 257,714 Installment 23 13 13 49 7,356 7,405 Total $ 5,455 918 13,008 19,381 2,791,905 2,811,286 Florida: (dollars in thousands) 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due Total 30+ days Past Due Current Total Loans Commercial: Commercial real estate $ - - - - 11,709 11,709 Other - - - - 604 604 Real estate mortgage - 1 to 4 family: First mortgages 243 103 940 1,286 782,718 784,004 Home equity loans - - - - 14,193 14,193 Home equity lines of credit 16 - 50 66 44,105 44,171 Installment 13 5 4 22 986 1,008 Total $ 272 108 994 1,374 854,315 855,689 Total: (dollars in thousands) 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due Total 30+ days Past Due Current Total Loans Commercial: Commercial real estate $ - 136 1,021 1,157 159,909 161,066 Other - - 113 113 23,950 24,063 Real estate mortgage - 1 to 4 family: First mortgages 5,074 862 10,573 16,509 3,073,005 3,089,514 Home equity loans - - 162 162 81,872 82,034 Home equity lines of credit 617 10 2,116 2,743 299,142 301,885 Installment 36 18 17 71 8,342 8,413 Total $ 5,727 1,026 14,002 20,755 3,646,220 3,666,975 New York and other states: December 31, 2017 (dollars in thousands) 30-59 Days Past Due 60-89 Days Past Due 90 + Days Past Due Total 30+ days Past Due Current Total Loans Commercial: Commercial real estate $ 183 174 1,332 1,689 147,679 149,368 Other - - 100 100 23,506 23,606 Real estate mortgage - 1 to 4 family: First mortgages 5,669 1,300 9,014 15,983 2,270,165 2,286,148 Home equity loans 6 - 45 51 66,404 66,455 Home equity lines of credit 489 18 2,139 2,646 260,629 263,275 Installment 46 17 25 88 7,053 7,141 Total $ 6,393 1,509 12,655 20,557 2,775,436 2,795,993 Florida: (dollars in thousands) 30-59 Days Past Due 60-89 Days Past Due 90 + Days Past Due Total 30+ days Past Due Current Total Loans Commercial: Commercial real estate $ - - - - 12,524 12,524 Other - - - - 709 709 Real estate mortgage - 1 to 4 family: First mortgages 277 - 1,404 1,681 764,248 765,929 Home equity loans - - - - 13,989 13,989 Home equity lines of credit - - - - 45,641 45,641 Installment 3 5 26 34 1,588 1,622 Total $ 280 5 1,430 1,715 838,699 840,414 Total: (dollars in thousands) 30-59 Days Past Due 60-89 Days Past Due 90 + Days Past Due Total 30+ days Past Due Current Total Loans Commercial: Commercial real estate $ 183 174 1,332 1,689 160,203 161,892 Other - - 100 100 24,215 24,315 Real estate mortgage - 1 to 4 family: First mortgages 5,946 1,300 10,418 17,664 3,034,413 3,052,077 Home equity loans 6 - 45 51 80,393 80,444 Home equity lines of credit 489 18 2,139 2,646 306,270 308,916 Installment 49 22 51 122 8,641 8,763 Total $ 6,673 1,514 14,085 22,272 3,614,135 3,636,407
Activity in the allowance for loan losses by portfolio segment	Activity in the allowance for loan losses by portfolio segment is summarized as follows: (dollars in thousands) For the three months ended March 31, 2018 Commercial Real Estate Mortgage- 1 to 4 Family Installment Total Balance at beginning of period $ 4,324 39,077 769 44,170 Loans charged off: New York and other states* - 131 71 202 Florida - - 3 3 Total loan chargeoffs - 131 74 205 Recoveries of loans previously charged off: New York and other states* 6 103 6 115 Florida - - - - Total recoveries 6 103 6 115 Net loans charged off (recoveries) (6 ) 28 68 90 Provision for loan losses (75 ) 310 64 300 Balance at end of period $ 4,255 39,359 765 44,379 (dollars in thousands) For the three months ended March 31, 2017 Commercial Real Estate Mortgage- 1 to 4 Family Installment Total Balance at beginning of period $ 4,929 38,231 730 43,890 Loans charged off: New York and other states* 72 430 41 543 Florida - 84 2 86 Total loan chargeoffs 72 514 43 629 Recoveries of loans previously charged off: New York and other states* 8 169 10 187 Florida - - - - Total recoveries 8 169 10 187 Net loans charged off 64 345 33 442 Provision for loan losses (55 ) 695 (40 ) 600 Balance at end of period $ 4,810 38,581 657 44,048
Allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method	The following tables present the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method as of March 31, 2018 and December 31, 2017: March 31, 2018 (dollars in thousands) Commercial Loans 1-to-4 Family Residential Real Estate Installment Loans Total Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ - - - - Collectively evaluated for impairment 4,255 39,359 765 44,379 Total ending allowance balance $ 4,255 39,359 765 44,379 Loans: Individually evaluated for impairment $ 1,923 22,510 - 24,433 Collectively evaluated for impairment 183,206 3,450,923 8,413 3,642,542 Total ending loans balance $ 185,129 3,473,433 8,413 3,666,975 December 31, 2017 (dollars in thousands) Commercial Loans 1-to-4 Family Residential Real Estate Installment Loans Total Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ - - - - Collectively evaluated for impairment 4,324 39,077 769 44,170 Total ending allowance balance $ 4,324 39,077 769 44,170 Loans: Individually evaluated for impairment $ 2,248 22,032 - 24,280 Collectively evaluated for impairment 183,959 3,419,405 8,763 3,612,127 Total ending loans balance $ 186,207 3,441,437 8,763 3,636,407
Impaired loans by loan class	The following tables present impaired loans by loan class as of March 31, 2018 and December 31, 2017: New York and other states: March 31, 2018 (dollars in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Commercial: Commercial real estate $ 1,710 2,680 - 2,264 Other 213 213 - 107 Real estate mortgage - 1 to 4 family: First mortgages 16,177 16,940 - 16,075 Home equity loans 265 285 - 267 Home equity lines of credit 2,751 2,992 - 2,692 Total $ 21,116 23,110 - 21,405 Florida: (dollars in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Commercial: Commercial real estate $ - - - - Other - - - - Real estate mortgage - 1 to 4 family: First mortgages 2,687 2,793 - 2,694 Home equity loans 88 88 - 88 Home equity lines of credit 542 542 - 521 Total $ 3,317 3,423 - 3,303 Total: (dollars in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Commercial: Commercial real estate $ 1,710 2,680 - 2,264 Other 213 213 - 107 Real estate mortgage - 1 to 4 family: First mortgages 18,864 19,733 - 18,769 Home equity loans 353 373 - 355 Home equity lines of credit 3,293 3,534 - 3,213 Total $ 24,433 26,533 - 24,708 New York and other states: December 31, 2017 (dollars in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Commercial: Commercial real estate $ 2,148 3,120 - 2,711 Other 100 100 - 87 Real estate mortgage - 1 to 4 family: First mortgages 15,850 16,540 - 16,508 Home equity loans 270 291 - 263 Home equity lines of credit 2,606 2,847 - 2,193 Total $ 20,974 22,898 - 21,762 Florida: (dollars in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Commercial: Commercial real estate $ - - - - Other - - - - Real estate mortgage - 1 to 4 family: First mortgages 2,707 2,813 - 2,335 Home equity loans 89 89 - 92 Home equity lines of credit 510 510 - 561 Total $ 3,306 3,412 - 2,988 Total: (dollars in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Commercial: Commercial real estate $ 2,148 3,120 - 2,711 Other 100 100 - 87 Real estate mortgage - 1 to 4 family: First mortgages 18,557 19,353 - 18,843 Home equity loans 359 380 - 355 Home equity lines of credit 3,116 3,357 - 2,754 Total $ 24,280 26,310 - 24,750
Modified loans by class that were determined to be TDR's	The following table presents, by class, loans that were modified as TDR’s: Three months ended 3/31/2018 Three months ended 3/31/2017 New York and other states*: Pre-Modification Post-Modification Pre-Modification Post-Modification (dollars in thousands) Number of Contracts Outstanding Recorded Investment Outstanding Recorded Investment Number of Contracts Outstanding Recorded Investment Outstanding Recorded Investment Real estate mortgage - 1 to 4 family: First mortgages 4 $ 642 $ 642 11 $ 1,947 $ 1,947 Home equity loans - - - 1 13 13 Home equity lines of credit 3 240 240 4 158 158 Total 7 $ 882 $ 882 16 $ 2,118 $ 2,118 Florida: Pre-Modification Post-Modification Pre-Modification Post-Modification (dollars in thousands) Number of Contracts Outstanding Recorded Investment Outstanding Recorded Investment Number of Contracts Outstanding Recorded Investment Outstanding Recorded Investment Real estate mortgage - 1 to 4 family: First mortgages - - - 1 $ 80 $ 80 Home equity lines of credit - - - 1 70 70 Total - $ - $ - 2 $ 150 $ 150
Loans by class modified as TDR's for which there was a payment default	The following table presents, by class, TDR’s that defaulted during the three months ended March 31, 2018 and 2017 which had been modified within the last twelve months: Three months ended 3/31/2018 Three months ended 3/31/2017 New York and other states*: Number of Recorded Number of Recorded (dollars in thousands) Contracts Investment Contracts Investment Real estate mortgage - 1 to 4 family: First mortgages - $ - - $ - Home equity lines of credit 1 3 - - Total 1 $ 3 - $ - Florida: (dollars in thousands) Number of Contracts Recorded Investment Number of Contracts Recorded Investment Real estate mortgage - 1 to 4 family: First mortgages 1 $ 72 1 $ 80 Home equity lines of credit - - 1 70 Total 1 $ 72 2 $ 150
Risk category of loans by class of loans	As of March 31, 2018 and December 31, 2017, and based on the most recent analysis performed, the risk category of loans by class of loans is as follows: March 31, 2018 New York and other states: (dollars in thousands) Pass Classified Total Commercial: Commercial real estate $ 142,463 6,894 149,357 Other 21,842 1,617 23,459 $ 164,305 8,511 172,816 Florida: (dollars in thousands) Pass Classified Total Commercial: Commercial real estate $ 11,709 - 11,709 Other 604 - 604 $ 12,313 - 12,313 Total: (dollars in thousands) Pass Classified Total Commercial: Commercial real estate $ 154,172 6,894 161,066 Other 22,446 1,617 24,063 $ 176,618 8,511 185,129 December 31, 2017 New York and other states: (dollars in thousands) Pass Classified Total Commercial: Commercial real estate $ 140,806 8,562 149,368 Other 21,936 1,670 23,606 $ 162,742 10,232 172,974 Florida: (dollars in thousands) Pass Classified Total Commercial: Commercial real estate $ 12,406 118 12,524 Other 709 - 709 $ 13,115 118 13,233 Total: (dollars in thousands) Pass Classified Total Commercial: Commercial real estate $ 153,212 8,680 161,892 Other 22,645 1,670 24,315 $ 175,857 10,350 186,207

Fair Value of Financial Instr22

Fair Value of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2018
Fair Value of Financial Instruments [Abstract]
Assets and liabilities measured at fair value on a recurring basis	Assets and liabilities measured at fair value under ASC 820 on a recurring basis are summarized below: Fair Value Measurements at March 31, 2018 Using: Carrying Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (dollars in thousands) Securities available for sale: U.S. government sponsored enterprises $ 151,327 $ - $ 151,327 $ - State and political subdivisions 525 - 525 - Mortgage backed securities and collateralized mortgage obligations - residential 297,633 - 297,633 - Corporate bonds 35,227 - 35,227 - Small Business Administration- guaranteed participation securities 64,113 - 64,113 - Mortgage backed securities and collateralized mortgage obligations - commercial 9,573 - 9,573 - Other securities 685 - 685 - Total securities available for sale $ 559,083 - 559,083 - Fair Value Measurements at December 31, 2017 Using: Carrying Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (dollars in thousands) Securities available for sale: U.S. government sponsored enterprises $ 137,851 $ - $ 137,851 $ - State and political subdivisions 525 - 525 - Mortgage backed securities and collateralized mortgage obligations - residential 315,983 - 315,983 - Corporate bonds 40,162 - 40,162 - Small Business Administration- guaranteed participation securities 67,059 - 67,059 - Mortgage backed securities and collateralized mortgage obligations - commercial 9,700 - 9,700 - Other securities 685 - 685 - Total securities available for sale $ 571,965 - 571,965 -
Assets measured at fair value on a non-recurring basis	Assets measured at fair value on a non-recurring basis are summarized below: Fair Value Measurements at March 31, 2018 Using: Carrying Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Valuation technique Unobservable inputs Range (Weighted Average) (dollars in thousands) Other real estate owned $ 2,190 $ - $ - $ 2,190 Sales comparison approach Adjustments for differences between comparable sales 1% - 14% (7 %) Impaired loans: Real estate mortgage - 1 to 4 family 750 - - 750 Sales comparison approach Adjustments for differences between comparable sales 5% - 14% (10 %) Fair Value Measurements at December 31, 2017 Using: Carrying Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Valuation technique Unobservable inputs Range (Weighted Average) (dollars in thousands) Other real estate owned $ 3,246 $ - $ - $ 3,246 Sales comparison approach Adjustments for differences between comparable sales 1% - 14% (7 %) Impaired loans: Real estate mortgage - 1 to 4 family 844 - - 844 Sales comparison approach Adjustments for differences between comparable sales 5% - 14% (10 %)
Carrying amounts and estimated fair values of financial instruments	The carrying amounts and estimated fair values (represents exit price) of financial instruments, at March 31, 2018 and December 31, 2017 are as follows: (dollars in thousands) Fair Value Measurements at Carrying March 31, 2018 Using: Value Level 1 Level 2 Level 3 Total Financial assets: Cash and cash equivalents $ 617,170 617,170 - - 617,170 Securities available for sale 559,083 35 559,048 - 559,083 Held to maturity securities 26,174 - 26,994 - 26,994 Federal Reserve Bank and Federal Home Loan Bank stock 8,779 N/A N/A N/A N/A Net loans 3,622,596 - - 3,598,673 3,598,673 Accrued interest receivable 10,579 85 2,611 7,883 10,579 Financial liabilities: Demand deposits 403,782 403,782 - - 403,782 Interest bearing deposits 3,831,298 2,721,854 1,122,106 - 3,843,960 Short-term borrowings 203,910 - 203,910 - 203,910 Accrued interest payable 665 75 590 - 665 (dollars in thousands) Fair Value Measurements at Carrying December 31, 2017 Using: Value Level 1 Level 2 Level 3 Total Financial assets: Cash and cash equivalents $ 612,740 612,740 - - 612,740 Securities available for sale 571,965 35 571,930 - 571,965 Held to maturity securities 27,551 - 28,701 - 28,701 Federal Reserve Bank and Federal Home Loan Bank stock 8,779 N/A N/A N/A N/A Net loans 3,692,237 - - 3,598,213 3,598,213 Accrued interest receivable 11,441 243 2,440 8,758 11,441 Financial liabilities: Demand deposits 398,399 398,399 - - 398,399 Interest bearing deposits 3,774,927 2,707,961 1,076,213 - 3,784,174 Short-term borrowings 242,991 - 242,991 - 242,991 Accrued interest payable 537 77 460 - 537

Accumulated Other Comprehensi23

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Abstract]
Accumulated other comprehensive (loss) income, net of tax	The following is a summary of the accumulated other comprehensive (loss) income balances, net of tax: Three months ended 3/31/18 (dollars in thousands) Balance at 12/31/2017 Other Comprehensive Income (loss)- Before Reclassifications Amount reclassified from Accumulated Other Comprehensive Income Other Comprehensive Income (loss)- Three months ended 3/31/2018 Balance at 3/31/2018 Net unrealized holding gain (loss) on securities available for sale, net of tax $ (5,030 ) (5,302 ) - (5,302 ) (10,332 ) Net change in net actuarial (gain) loss and prior service cost on pension and Adjustment postretirement benefit plans, net of tax 3,224 - (36 ) (36 ) 3,188 Tax Cuts and Jobs Act of 2017, Reclassification from AOCI to Retained Earnings, Tax Effect - - (1,346 ) - (1,346 ) Accumulated other comprehensive income (loss), net of tax $ (1,806 ) (5,302 ) (1,382 ) (5,338 ) (8,490 ) (dollars in thousands) Three months ended 3/31/2017 Balance at 12/31/2016 Other Comprehensive Income (loss)- Before Reclassifications Amount reclassified from Accumulated Other Comprehensive Income Other Comprehensive Income (loss)- Three months ended 3/31/2016 Balance at 3/31/2017 Net unrealized holding gain (loss) on securities available for sale, net of tax $ (6,762 ) 707 - 707 (6,055 ) Net change in net actuarial (gain) loss and prior service cost on pension and postretirement benefit plans, net of tax 511 - (24 ) (24 ) 487 Accumulated other comprehensive income (loss), net of tax $ (6,251 ) 707 (24 ) 683 (5,568 )
Reclassifications out of accumulated other comprehensive income (loss)	The following represents the reclassifications out of accumulated other comprehensive income (loss) for the three months ended March 31, 2018 and 2017: (dollars in thousands) Three months ended March 31, 2018 2017 Affected Line Item in Statements Amortization of pension and postretirement benefit items Amortization of net actuarial (gain) loss $ (72 ) $ (63 ) Salaries and employee benefits Amortization of prior service cost 23 23 Salaries and employee benefits Income tax benefit 13 16 Income taxes Net of tax (36 ) (24 ) Total reclassifications, net of tax $ (36 ) $ (24 )

Revenue from Contracts with C24

Revenue from Contracts with Customers (Tables)	3 Months Ended
	Mar. 31, 2018
Revenue from Contracts with Customers [Abstract]
Source of Non Interest Income	The following table presents the Company’s sources of Non-Interest Income for the three months ended March 31, 2018 and 2017. Items outside the scope of ASC 606 are noted as such. (dollars in thousands) Three months ended March 31, 2018 2017 Non-interest income Service Charges on Deposits Overdraft fees $ 827 $ 859 Other 114 79 Interchange Income 1,306 1,266 Wealth management fees 1,815 1,858 Other (a) 617 665 Total non-interest income $ 4,679 $ 4,727 (a) Not within the scope of ASC 606.

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Reconciliation of the component parts of earnings per share [Abstract]
Net income	$ 14,808	$ 10,947
Weighted average common shares (in shares)	96,353	95,879
Stock Options (in shares)	131	108
Weighted average common shares including potential dilutive shares (in shares)	96,484	95,987
Basic EPS (in dollars per share)	$ 0.154	$ 0.114
Diluted EPS (in dollars per share)	$ 0.153	$ 0.114
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average number of antidilutive stock options excluded from diluted earnings per share (in shares)	0	553

Benefit Plans (Details)

Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Components of net periodic benefit cost [Abstract]
Contribution made to pension and postretirement plans	$ 0
Pension Benefits [Member]
Components of net periodic benefit cost [Abstract]
Service cost	11	$ 11
Interest cost	326	329
Expected return on plan assets	(687)	(686)
Amortization of net loss (gain)	17	23
Amortization of prior service cost	0	0
Net periodic benefit	(333)	(323)
Other Postretirement Benefits [Member]
Components of net periodic benefit cost [Abstract]
Service cost	26	28
Interest cost	54	56
Expected return on plan assets	(190)	(191)
Amortization of net loss (gain)	(89)	(86)
Amortization of prior service cost	23	23
Net periodic benefit	$ (176)	$ (170)

Investment Securities, Availabl

Investment Securities, Available-for-sale Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Amortized cost and fair value of the securities available for sale [Abstract]
Amortized Cost	$ 574,983	$ 580,705
Gross Unrealized Gains	85	121
Gross Unrealized Losses	15,985	8,861
Fair Value	559,083	571,965
U. S. Government Sponsored Enterprises [Member]
Amortized cost and fair value of the securities available for sale [Abstract]
Amortized Cost	154,861	139,890
Gross Unrealized Gains	0	27
Gross Unrealized Losses	3,534	2,066
Fair Value	151,327	137,851
State and Political Subdivisions [Member]
Amortized cost and fair value of the securities available for sale [Abstract]
Amortized Cost	515	515
Gross Unrealized Gains	10	10
Gross Unrealized Losses	0	0
Fair Value	525	525
Corporate Bonds [Member]
Amortized cost and fair value of the securities available for sale [Abstract]
Amortized Cost	35,347	40,270
Gross Unrealized Gains	0	0
Gross Unrealized Losses	120	108
Fair Value	35,227	40,162
Mortgage Backed Securities and Collateralized Mortgage Obligations-Residential [Member]
Amortized cost and fair value of the securities available for sale [Abstract]
Amortized Cost	307,679	320,614
Gross Unrealized Gains	75	84
Gross Unrealized Losses	10,121	4,715
Fair Value	297,633	315,983
Small Business Administration-Guaranteed Participation Securities [Member]
Amortized cost and fair value of the securities available for sale [Abstract]
Amortized Cost	66,153	68,921
Gross Unrealized Gains	0	0
Gross Unrealized Losses	2,040	1,862
Fair Value	64,113	67,059
Mortgage Backed Securities and Collateralized Mortgage Obligations-Commercial [Member]
Amortized cost and fair value of the securities available for sale [Abstract]
Amortized Cost	9,743	9,810
Gross Unrealized Gains	0	0
Gross Unrealized Losses	170	110
Fair Value	9,573	9,700
Other [Member]
Amortized cost and fair value of the securities available for sale [Abstract]
Amortized Cost	685	685
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	$ 685	$ 685

Investment Securities, Availa28

Investment Securities, Available-for-sale Securities, Maturities (Details) $ in Thousands	Mar. 31, 2018USD ($)
Amortized Cost [Abstract]
Due in one year or less	$ 30,717
Due in one year through five years	150,597
Due after five years through ten years	10,094
Amortized Cost	574,983
Fair Value [Abstract]
Due in one year or less	30,617
Due in one year through five years	147,053
Due after five years through ten years	10,094
Fair Value	559,083
Mortgage-Backed Securities and Collateralized Mortgage Obligations-Residential [Member]
Amortized Cost [Abstract]
Securities, amortized cost	307,679
Fair Value [Abstract]
Securities, fair value	297,633
Small Business Administration-Guaranteed Participation Securities [Member]
Amortized Cost [Abstract]
Securities, amortized cost	66,153
Fair Value [Abstract]
Securities, fair value	64,113
Mortgage-Backed Securities and Collateralized Mortgage Obligations-Commercial [Member]
Amortized Cost [Abstract]
Securities, amortized cost	9,743
Fair Value [Abstract]
Securities, fair value	$ 9,573

Investment Securities, Availa29

Investment Securities, Available-for-sale Securities, Gross Unrealized Loss Position (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Available for sale securities unrealized loss position - Fair Value [Abstract]
Less than 12 months - Fair Value	$ 109,735	$ 77,814
12 months or more - Fair Value	436,666	481,405
Total - Fair Value	546,401	559,219
Available for sale securities unrealized loss position - Gross Unrealized Loss [Abstract]
Less than 12 months - Gross Unrealized Loss	2,135	637
12 months or more - Gross Unrealized Loss	13,850	8,224
Total - Gross Unrealized Loss	15,985	8,861
U. S. Government Sponsored Enterprises [Member]
Available for sale securities unrealized loss position - Fair Value [Abstract]
Less than 12 months - Fair Value	59,076	29,734
12 months or more - Fair Value	82,251	98,090
Total - Fair Value	141,327	127,824
Available for sale securities unrealized loss position - Gross Unrealized Loss [Abstract]
Less than 12 months - Gross Unrealized Loss	895	266
12 months or more - Gross Unrealized Loss	2,639	1,800
Total - Gross Unrealized Loss	3,534	2,066
Mortgage Backed Securities and Collateralized Mortgage Obligations-Residential [Member]
Available for sale securities unrealized loss position - Fair Value [Abstract]
Less than 12 months - Fair Value	45,441	48,080
12 months or more - Fair Value	250,721	266,394
Total - Fair Value	296,162	314,474
Available for sale securities unrealized loss position - Gross Unrealized Loss [Abstract]
Less than 12 months - Gross Unrealized Loss	1,221	371
12 months or more - Gross Unrealized Loss	8,900	4,344
Total - Gross Unrealized Loss	10,121	4,715
Corporate Bonds [Member]
Available for sale securities unrealized loss position - Fair Value [Abstract]
Less than 12 months - Fair Value	5,218	0
12 months or more - Fair Value	30,008	40,162
Total - Fair Value	35,227	40,162
Available for sale securities unrealized loss position - Gross Unrealized Loss [Abstract]
Less than 12 months - Gross Unrealized Loss	19	0
12 months or more - Gross Unrealized Loss	101	108
Total - Gross Unrealized Loss	120	108
Small Business Administration-Guaranteed Participation Securities [Member]
Available for sale securities unrealized loss position - Fair Value [Abstract]
Less than 12 months - Fair Value	0	0
12 months or more - Fair Value	64,113	67,059
Total - Fair Value	64,113	67,059
Available for sale securities unrealized loss position - Gross Unrealized Loss [Abstract]
Less than 12 months - Gross Unrealized Loss	0	0
12 months or more - Gross Unrealized Loss	2,040	1,862
Total - Gross Unrealized Loss	2,040	1,862
Mortgage Backed Securities and Collateralized Mortgage Obligations-Commercial [Member]
Available for sale securities unrealized loss position - Fair Value [Abstract]
Less than 12 months - Fair Value	0	0
12 months or more - Fair Value	9,573	9,700
Total - Fair Value	9,573	9,700
Available for sale securities unrealized loss position - Gross Unrealized Loss [Abstract]
Less than 12 months - Gross Unrealized Loss	0	0
12 months or more - Gross Unrealized Loss	170	110
Total - Gross Unrealized Loss	$ 170	$ 110

Investment Securities, Availa30

Investment Securities, Available-for-sale Securities, Transaction Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Investment Securities [Abstract]
Gross realized gains or losses	$ 0	$ 0
Sales of available for sale securities	0	0
Proceeds from calls	$ 25,028	$ 20,770

Investment Securities, Held-to-

Investment Securities, Held-to-maturity Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Amortized cost and fair value of the held to maturity securities [Abstract]
Amortized Cost	$ 26,174	$ 27,551
Gross Unrecognized Gains	882	1,150
Gross Unrecognized Losses	62	0
Fair Value	26,994	28,701
Mortgage Backed Securities and Collateralized Mortgage Obligations-Residential [Member]
Amortized cost and fair value of the held to maturity securities [Abstract]
Amortized Cost	26,174	27,551
Gross Unrecognized Gains	882	1,150
Gross Unrecognized Losses	62	0
Fair Value	$ 26,994	$ 28,701

Investment Securities, Held-t32

Investment Securities, Held-to-maturity Securities, Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Amortized Cost [Abstract]
Amortized Cost	$ 26,174	$ 27,551
Fair Value [Abstract]
Fair Value	26,994	28,701
Mortgage-Backed Securities and Collateralized Mortgage Obligations-Residential [Member]
Amortized Cost [Abstract]
Securities, amortized cost	26,174
Amortized Cost	26,174	27,551
Fair Value [Abstract]
Securities, fair value	26,994
Fair Value	$ 26,994	$ 28,701

Investment Securities, Held-t33

Investment Securities, Held-to-maturity Securities, Gross Unrealized Loss Position (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Fair Value [Abstract]
Less than 12 months - Fair Value	$ 9,539
12 months or more - Fair Value	0
Total - Fair Value	9,539
Gross Unrealized Loss [Abstract]
Less than 12 months - Gross Unrealized Loss	62
12 months or more - Gross Unrealized Loss	0
Total - Gross Unrealized Loss	62		$ 0
Sales and transfers of held to maturity securities	0	$ 0
Mortgage Backed Securities and Collateralized Mortgage Obligations-Residential [Member]
Fair Value [Abstract]
Less than 12 months - Fair Value	9,539
12 months or more - Fair Value	0
Total - Fair Value	9,539
Gross Unrealized Loss [Abstract]
Less than 12 months - Gross Unrealized Loss	62
12 months or more - Gross Unrealized Loss	0
Total - Gross Unrealized Loss	$ 62

Loans and Allowance for Loan 34

Loans and Allowance for Loan Losses (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		$ 3,666,975	$ 3,636,407
Less: Allowance for loan losses		44,379	44,170	$ 44,048	$ 43,890
Net loans		3,622,596	3,592,237
New York and Other States [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net	[1]	2,811,286	2,795,993
Florida [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		855,689	840,414
Real Estate Construction Loans [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		28,400	30,900
Residential Borrowers [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		20,400	21,100
Commercial Borrowers Residential Purpose [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		8,000	9,800
Commercial [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		185,129	186,207
Less: Allowance for loan losses		4,255	4,324	4,810	4,929
Commercial [Member] | New York and Other States [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		172,816	172,974
Commercial [Member] | Florida [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		12,313	13,233
Commercial [Member] | Commercial Real Estate [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		161,066	161,892
Commercial [Member] | Commercial Real Estate [Member] | New York and Other States [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net	[1]	149,357	149,368
Commercial [Member] | Commercial Real Estate [Member] | Florida [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		11,709	12,524
Commercial [Member] | Other [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		24,063	24,315
Commercial [Member] | Other [Member] | New York and Other States [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net	[1]	23,459	23,606
Commercial [Member] | Other [Member] | Florida [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		604	709
Real Estate Mortgage - 1 to 4 Family [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		3,473,433	3,441,437
Less: Allowance for loan losses		39,359	39,077	38,581	38,231
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		3,089,514	3,052,077
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | New York and Other States [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net	[1]	2,305,510	2,286,148
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Florida [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		784,004	765,929
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		82,034	80,444
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | New York and Other States [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net	[1]	67,841	66,455
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | Florida [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		14,193	13,989
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		301,885	308,916
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | New York and Other States [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net	[1]	257,714	263,275
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | Florida [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		44,171	45,641
Installment [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		8,413	8,763
Less: Allowance for loan losses		765	769	$ 657	$ 730
Installment [Member] | New York and Other States [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net	[1]	7,405	7,141
Installment [Member] | Florida [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total loans, net		$ 1,008	$ 1,622
[1]	Includes New York, New Jersey, Vermont and Massachusetts.

Loans and Allowance for Loan 35

Loans and Allowance for Loan Losses, Non-accrual Loans, By Loan Class (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Non accrual loans by loan class [Abstract]
Total non-accrual loans	$ 24,814	$ 24,339
Restructured real estate mortgages - 1 to 4 family	38	38
Total nonperforming loans	24,852	24,377
Other real estate owned	2,200	2,700
New York and Other States [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	22,657	21,950
Restructured real estate mortgages - 1 to 4 family	38	38
Total nonperforming loans	22,695	21,988
Florida [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	2,157	2,389
Restructured real estate mortgages - 1 to 4 family	0	0
Total nonperforming loans	2,157	2,389
Residential Real Estate [Member]
Non accrual loans by loan class [Abstract]
Non accrual residential mortgage loans in the process of foreclosure	12,700	12,600
Commercial [Member] | Commercial Real Estate [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	1,100	1,443
Commercial [Member] | Commercial Real Estate [Member] | New York and Other States [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	1,100	1,443
Commercial [Member] | Commercial Real Estate [Member] | Florida [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	0	0
Commercial [Member] | Other [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	113	100
Commercial [Member] | Other [Member] | New York and Other States [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	113	100
Commercial [Member] | Other [Member] | Florida [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	0	0
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	19,712	18,913
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | New York and Other States [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	17,687	16,654
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Florida [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	2,025	2,259
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	200	93
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | New York and Other States [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	200	93
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | Florida [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	0	0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	3,666	3,733
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | New York and Other States [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	3,538	3,603
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | Florida [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	128	130
Installment [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	23	57
Installment [Member] | New York and Other States [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	19	57
Installment [Member] | Florida [Member]
Non accrual loans by loan class [Abstract]
Total non-accrual loans	$ 4	$ 0

Loans and Allowance for Loan 36

Loans and Allowance for Loan Losses, Past Due (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
		Mar. 31, 2018	Dec. 31, 2017
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		$ 20,755	$ 22,272
Current		3,646,220	3,614,135
Total loans		3,666,975	3,636,407
Loans that are 90 days past due and still accruing interest		$ 0	$ 0
Number of days past due		90 days	90 days
New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		$ 19,381	$ 20,557
Current		2,791,905	2,775,436
Total loans	[1]	2,811,286	2,795,993
Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		1,374	1,715
Current		854,315	838,699
Total loans		855,689	840,414
30-59 Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		5,727	6,673
30-59 Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		5,455	6,393
30-59 Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		272	280
60-89 Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		1,026	1,514
60-89 Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		918	1,509
60-89 Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		108	5
90+ Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		14,002	14,085
90+ Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		13,008	12,655
90+ Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		994	1,430
Commercial [Member]
Aging of the recorded investment in past due loans [Abstract]
Total loans		185,129	186,207
Commercial [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total loans		172,816	172,974
Commercial [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total loans		12,313	13,233
Commercial [Member] | Commercial Real Estate [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		1,157	1,689
Current		159,909	160,203
Total loans		161,066	161,892
Commercial [Member] | Commercial Real Estate [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		1,157	1,689
Current		148,200	147,679
Total loans	[1]	149,357	149,368
Commercial [Member] | Commercial Real Estate [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	0
Current		11,709	12,524
Total loans		11,709	12,524
Commercial [Member] | Commercial Real Estate [Member] | 30-59 Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	183
Commercial [Member] | Commercial Real Estate [Member] | 30-59 Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	183
Commercial [Member] | Commercial Real Estate [Member] | 30-59 Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	0
Commercial [Member] | Commercial Real Estate [Member] | 60-89 Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		136	174
Commercial [Member] | Commercial Real Estate [Member] | 60-89 Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		136	174
Commercial [Member] | Commercial Real Estate [Member] | 60-89 Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	0
Commercial [Member] | Commercial Real Estate [Member] | 90+ Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		1,021	1,332
Commercial [Member] | Commercial Real Estate [Member] | 90+ Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		1,021	1,332
Commercial [Member] | Commercial Real Estate [Member] | 90+ Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	0
Commercial [Member] | Other [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		113	100
Current		23,950	24,215
Total loans		24,063	24,315
Commercial [Member] | Other [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		113	100
Current		23,346	23,506
Total loans	[1]	23,459	23,606
Commercial [Member] | Other [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	0
Current		604	709
Total loans		604	709
Commercial [Member] | Other [Member] | 30-59 Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	0
Commercial [Member] | Other [Member] | 30-59 Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	0
Commercial [Member] | Other [Member] | 30-59 Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	0
Commercial [Member] | Other [Member] | 60-89 Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	0
Commercial [Member] | Other [Member] | 60-89 Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	0
Commercial [Member] | Other [Member] | 60-89 Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	0
Commercial [Member] | Other [Member] | 90+ Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		113	100
Commercial [Member] | Other [Member] | 90+ Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		113	100
Commercial [Member] | Other [Member] | 90+ Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	0
Real Estate Mortgage - 1 to 4 Family [Member]
Aging of the recorded investment in past due loans [Abstract]
Total loans		3,473,433	3,441,437
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		16,509	17,664
Current		3,073,005	3,034,413
Total loans		3,089,514	3,052,077
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		15,223	15,983
Current		2,290,287	2,270,165
Total loans	[1]	2,305,510	2,286,148
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		1,286	1,681
Current		782,718	764,248
Total loans		784,004	765,929
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | 30-59 Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		5,074	5,946
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | 30-59 Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		4,831	5,669
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | 30-59 Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		243	277
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | 60-89 Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		862	1,300
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | 60-89 Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		759	1,300
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | 60-89 Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		103	0
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | 90+ Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		10,573	10,418
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | 90+ Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		9,633	9,014
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | 90+ Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		940	1,404
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		162	51
Current		81,872	80,393
Total loans		82,034	80,444
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		162	51
Current		67,679	66,404
Total loans	[1]	67,841	66,455
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	0
Current		14,193	13,989
Total loans		14,193	13,989
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | 30-59 Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	6
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | 30-59 Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	6
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | 30-59 Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | 60-89 Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | 60-89 Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | 60-89 Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | 90+ Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		162	45
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | 90+ Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		162	45
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | 90+ Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		2,743	2,646
Current		299,142	306,270
Total loans		301,885	308,916
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		2,677	2,646
Current		255,037	260,629
Total loans	[1]	257,714	263,275
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		66	0
Current		44,105	45,641
Total loans		44,171	45,641
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | 30-59 Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		617	489
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | 30-59 Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		601	489
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | 30-59 Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		16	0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | 60-89 Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		10	18
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | 60-89 Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		10	18
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | 60-89 Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		0	0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | 90+ Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		2,116	2,139
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | 90+ Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		2,066	2,139
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | 90+ Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		50	0
Installment [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		71	122
Current		8,342	8,641
Total loans		8,413	8,763
Installment [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		49	88
Current		7,356	7,053
Total loans	[1]	7,405	7,141
Installment [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		22	34
Current		986	1,588
Total loans		1,008	1,622
Installment [Member] | 30-59 Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		36	49
Installment [Member] | 30-59 Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		23	46
Installment [Member] | 30-59 Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		13	3
Installment [Member] | 60-89 Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		18	22
Installment [Member] | 60-89 Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		13	17
Installment [Member] | 60-89 Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		5	5
Installment [Member] | 90+ Days Past Due [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		17	51
Installment [Member] | 90+ Days Past Due [Member] | New York and Other States [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		13	25
Installment [Member] | 90+ Days Past Due [Member] | Florida [Member]
Aging of the recorded investment in past due loans [Abstract]
Total 30+ days Past Due		$ 4	$ 26
[1]	Includes New York, New Jersey, Vermont and Massachusetts.

Loans and Allowance for Loan 37

Loans and Allowance for Loan Losses, Allowance for Loan Losses (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Allowance for loan losses by portfolio segment [Roll Forward]
Balance at beginning of period		$ 44,170	$ 43,890
Loans charged off [Abstract]
Total loan charge offs		205	629
Recoveries of loans previously charged off [Abstract]
Total recoveries		115	187
Net loans charged off (recoveries)		90	442
Provision for loan losses		300	600
Balance at end of period		44,379	44,048
New York and Other States [Member]
Loans charged off [Abstract]
Total loan charge offs	[1]	202	543
Recoveries of loans previously charged off [Abstract]
Total recoveries		115	187	[1]
Florida [Member]
Loans charged off [Abstract]
Total loan charge offs		3	86
Recoveries of loans previously charged off [Abstract]
Total recoveries		0	0
Commercial [Member]
Allowance for loan losses by portfolio segment [Roll Forward]
Balance at beginning of period		4,324	4,929
Loans charged off [Abstract]
Total loan charge offs		0	72
Recoveries of loans previously charged off [Abstract]
Total recoveries		6	8
Net loans charged off (recoveries)		(6)	64
Provision for loan losses		(75)	(55)
Balance at end of period		4,255	4,810
Commercial [Member] | New York and Other States [Member]
Loans charged off [Abstract]
Total loan charge offs	[1]	0	72
Recoveries of loans previously charged off [Abstract]
Total recoveries		6	8	[1]
Commercial [Member] | Florida [Member]
Loans charged off [Abstract]
Total loan charge offs		0	0
Recoveries of loans previously charged off [Abstract]
Total recoveries		0	0
Real Estate Mortgage - 1 to 4 Family [Member]
Allowance for loan losses by portfolio segment [Roll Forward]
Balance at beginning of period		39,077	38,231
Loans charged off [Abstract]
Total loan charge offs		131	514
Recoveries of loans previously charged off [Abstract]
Total recoveries		103	169
Net loans charged off (recoveries)		28	345
Provision for loan losses		310	695
Balance at end of period		39,359	38,581
Real Estate Mortgage - 1 to 4 Family [Member] | New York and Other States [Member]
Loans charged off [Abstract]
Total loan charge offs	[1]	131	430
Recoveries of loans previously charged off [Abstract]
Total recoveries		103	169	[1]
Real Estate Mortgage - 1 to 4 Family [Member] | Florida [Member]
Loans charged off [Abstract]
Total loan charge offs		0	84
Recoveries of loans previously charged off [Abstract]
Total recoveries		0	0
Installment [Member]
Allowance for loan losses by portfolio segment [Roll Forward]
Balance at beginning of period		769	730
Loans charged off [Abstract]
Total loan charge offs		74	43
Recoveries of loans previously charged off [Abstract]
Total recoveries		6	10
Net loans charged off (recoveries)		68	33
Provision for loan losses		64	(40)
Balance at end of period		765	657
Installment [Member] | New York and Other States [Member]
Loans charged off [Abstract]
Total loan charge offs	[1]	71	41
Recoveries of loans previously charged off [Abstract]
Total recoveries		6	10	[1]
Installment [Member] | Florida [Member]
Loans charged off [Abstract]
Total loan charge offs		3	2
Recoveries of loans previously charged off [Abstract]
Total recoveries		$ 0	$ 0
[1]	Includes New York, New Jersey, Vermont and Massachusetts

Loans and Allowance for Loan 38

Loans and Allowance for Loan Losses, Based on Impairment Review Method (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Ending allowance balance attributable to loans [Abstract]
Individually evaluated for impairment	$ 0	$ 0
Collectively evaluated for impairment	44,379	44,170
Total ending allowance balance	44,379	44,170	$ 44,048	$ 43,890
Loans [Abstract]
Individually evaluated for impairment	24,433	24,280
Collectively evaluated for impairment	3,642,542	3,612,127
Total loans	3,666,975	3,636,407
Commercial [Member]
Ending allowance balance attributable to loans [Abstract]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	4,255	4,324
Total ending allowance balance	4,255	4,324	4,810	4,929
Loans [Abstract]
Individually evaluated for impairment	1,923	2,248
Collectively evaluated for impairment	183,206	183,959
Total loans	185,129	186,207
1 to 4 Family Residential Real Estate [Member]
Ending allowance balance attributable to loans [Abstract]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	39,359	39,077
Total ending allowance balance	39,359	39,077	38,581	38,231
Loans [Abstract]
Individually evaluated for impairment	22,510	22,032
Collectively evaluated for impairment	3,450,923	3,419,405
Total loans	3,473,433	3,441,437
Installment [Member]
Ending allowance balance attributable to loans [Abstract]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	765	769
Total ending allowance balance	765	769	$ 657	$ 730
Loans [Abstract]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	8,413	8,763
Total loans	$ 8,413	$ 8,763

Loans and Allowance for Loan 39

Loans and Allowance for Loan Losses, Impaired Receivables (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Impaired loans by loans class [Abstract]
Recorded Investment	$ 24,433	$ 24,280
Unpaid Principal Balance	26,533	26,310
Related Allowance	0	0
Average Recorded Investment	24,708	24,750
New York and Other States [Member]
Impaired loans by loans class [Abstract]
Recorded Investment	21,116	20,974
Unpaid Principal Balance	23,110	22,898
Related Allowance	0	0
Average Recorded Investment	21,405	21,762
Florida [Member]
Impaired loans by loans class [Abstract]
Recorded Investment	3,317	3,306
Unpaid Principal Balance	3,423	3,412
Related Allowance	0	0
Average Recorded Investment	3,303	2,988
Commercial [Member] | Commercial Real Estate [Member]
Impaired loans by loans class [Abstract]
Recorded Investment	1,710	2,148
Unpaid Principal Balance	2,680	3,120
Related Allowance	0	0
Average Recorded Investment	2,264	2,711
Commercial [Member] | Commercial Real Estate [Member] | New York and Other States [Member]
Impaired loans by loans class [Abstract]
Recorded Investment	1,710	2,148
Unpaid Principal Balance	2,680	3,120
Related Allowance	0	0
Average Recorded Investment	2,264	2,711
Commercial [Member] | Commercial Real Estate [Member] | Florida [Member]
Impaired loans by loans class [Abstract]
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related Allowance	0	0
Average Recorded Investment	0	0
Commercial [Member] | Other [Member]
Impaired loans by loans class [Abstract]
Recorded Investment	213	100
Unpaid Principal Balance	213	100
Related Allowance	0	0
Average Recorded Investment	107	87
Commercial [Member] | Other [Member] | New York and Other States [Member]
Impaired loans by loans class [Abstract]
Recorded Investment	213	100
Unpaid Principal Balance	213	100
Related Allowance	0	0
Average Recorded Investment	107	87
Commercial [Member] | Other [Member] | Florida [Member]
Impaired loans by loans class [Abstract]
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related Allowance	0	0
Average Recorded Investment	0	0
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member]
Impaired loans by loans class [Abstract]
Recorded Investment	18,864	18,557
Unpaid Principal Balance	19,733	19,353
Related Allowance	0	0
Average Recorded Investment	18,769	18,843
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | New York and Other States [Member]
Impaired loans by loans class [Abstract]
Recorded Investment	16,177	15,850
Unpaid Principal Balance	16,940	16,540
Related Allowance	0	0
Average Recorded Investment	16,075	16,508
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Florida [Member]
Impaired loans by loans class [Abstract]
Recorded Investment	2,687	2,707
Unpaid Principal Balance	2,793	2,813
Related Allowance	0	0
Average Recorded Investment	2,694	2,335
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member]
Impaired loans by loans class [Abstract]
Recorded Investment	353	359
Unpaid Principal Balance	373	380
Related Allowance	0	0
Average Recorded Investment	355	355
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | New York and Other States [Member]
Impaired loans by loans class [Abstract]
Recorded Investment	265	270
Unpaid Principal Balance	285	291
Related Allowance	0	0
Average Recorded Investment	267	263
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | Florida [Member]
Impaired loans by loans class [Abstract]
Recorded Investment	88	89
Unpaid Principal Balance	88	89
Related Allowance	0	0
Average Recorded Investment	88	92
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member]
Impaired loans by loans class [Abstract]
Recorded Investment	3,293	3,116
Unpaid Principal Balance	3,534	3,357
Related Allowance	0	0
Average Recorded Investment	3,213	2,754
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | New York and Other States [Member]
Impaired loans by loans class [Abstract]
Recorded Investment	2,751	2,606
Unpaid Principal Balance	2,992	2,847
Related Allowance	0	0
Average Recorded Investment	2,692	2,193
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | Florida [Member]
Impaired loans by loans class [Abstract]
Recorded Investment	542	510
Unpaid Principal Balance	542	510
Related Allowance	0	0
Average Recorded Investment	$ 521	$ 561

Loans and Allowance for Loan 40

Loans and Allowance for Loan Losses, Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)Contract	Mar. 31, 2017USD ($)Contract	Dec. 31, 2017USD ($)
Financing Receivable, Modifications [Line Items]
TDR's classifications from previously performing loans	$ 11,100		$ 11,800
New York and Other States [Member]
Modified loans by class determined to be TDR's [Abstract]
Number of Contracts | Contract	7	16
Pre-Modification Outstanding Recorded Investment	$ 882	$ 2,118
Post-Modification Outstanding Recorded Investment	$ 882	$ 2,118
Florida [Member]
Modified loans by class determined to be TDR's [Abstract]
Number of Contracts | Contract	0	2
Pre-Modification Outstanding Recorded Investment	$ 0	$ 150
Post-Modification Outstanding Recorded Investment	$ 0	$ 150
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | New York and Other States [Member]
Modified loans by class determined to be TDR's [Abstract]
Number of Contracts | Contract	4	11
Pre-Modification Outstanding Recorded Investment	$ 642	$ 1,947
Post-Modification Outstanding Recorded Investment	$ 642	$ 1,947
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Florida [Member]
Modified loans by class determined to be TDR's [Abstract]
Number of Contracts | Contract	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 80
Post-Modification Outstanding Recorded Investment	$ 0	$ 80
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | New York and Other States [Member]
Modified loans by class determined to be TDR's [Abstract]
Number of Contracts | Contract	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 13
Post-Modification Outstanding Recorded Investment	$ 0	$ 13
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | New York and Other States [Member]
Modified loans by class determined to be TDR's [Abstract]
Number of Contracts | Contract	3	4
Pre-Modification Outstanding Recorded Investment	$ 240	$ 158
Post-Modification Outstanding Recorded Investment	$ 240	$ 158
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | Florida [Member]
Modified loans by class determined to be TDR's [Abstract]
Number of Contracts | Contract	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 70
Post-Modification Outstanding Recorded Investment	$ 0	$ 70

Loans and Allowance for Loan 41

Loans and Allowance for Loan Losses, Modified Loans Payment Status (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)Contract	Mar. 31, 2017USD ($)Contract
Loans and Allowance for Loan Losses [Abstract]
Deferral period of chapter 13 bankruptcies	60 months
Number of days past due when loans are considered to be in payment default	90 days
Contractual past due period for loans to be in payment default	30 days
New York and Other States [Member]
Loans modified for which there was payment default [Abstract]
Number of Contracts | Contract	1	0
Recorded Investment | $	$ 3	$ 0
Florida [Member]
Loans modified for which there was payment default [Abstract]
Number of Contracts | Contract	1	2
Recorded Investment | $	$ 72	$ 150
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | New York and Other States [Member]
Loans modified for which there was payment default [Abstract]
Number of Contracts | Contract	0	0
Recorded Investment | $	$ 0	$ 0
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Florida [Member]
Loans modified for which there was payment default [Abstract]
Number of Contracts | Contract	1	1
Recorded Investment | $	$ 72	$ 80
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | New York and Other States [Member]
Loans modified for which there was payment default [Abstract]
Number of Contracts | Contract	1	0
Recorded Investment | $	$ 3	$ 0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | Florida [Member]
Loans modified for which there was payment default [Abstract]
Number of Contracts | Contract	0	1
Recorded Investment | $	$ 0	$ 70

Loans and Allowance for Loan 42

Loans and Allowance for Loan Losses, Risk Category of Loans (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		$ 3,666,975	$ 3,636,407
Non-accrual loans included in classified loans		1,900	2,200
New York and Other States [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net	[1]	2,811,286	2,795,993
Florida [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		855,689	840,414
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		185,129	186,207
Commercial [Member] | New York and Other States [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		172,816	172,974
Commercial [Member] | Florida [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		12,313	13,233
Commercial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		176,618	175,857
Commercial [Member] | Pass [Member] | New York and Other States [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		164,305	162,742
Commercial [Member] | Pass [Member] | Florida [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		12,313	13,115
Commercial [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		8,511	10,350
Commercial [Member] | Classified [Member] | New York and Other States [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		8,511	10,232
Commercial [Member] | Classified [Member] | Florida [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		0	118
Commercial [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		161,066	161,892
Commercial [Member] | Commercial Real Estate [Member] | New York and Other States [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net	[1]	149,357	149,368
Commercial [Member] | Commercial Real Estate [Member] | Florida [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		11,709	12,524
Commercial [Member] | Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		154,172	153,212
Commercial [Member] | Commercial Real Estate [Member] | Pass [Member] | New York and Other States [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		142,463	140,806
Commercial [Member] | Commercial Real Estate [Member] | Pass [Member] | Florida [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		11,709	12,406
Commercial [Member] | Commercial Real Estate [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		6,894	8,680
Commercial [Member] | Commercial Real Estate [Member] | Classified [Member] | New York and Other States [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		6,894	8,562
Commercial [Member] | Commercial Real Estate [Member] | Classified [Member] | Florida [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		0	118
Commercial [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		24,063	24,315
Commercial [Member] | Other [Member] | New York and Other States [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net	[1]	23,459	23,606
Commercial [Member] | Other [Member] | Florida [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		604	709
Commercial [Member] | Other [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		22,446	22,645
Commercial [Member] | Other [Member] | Pass [Member] | New York and Other States [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		21,842	21,936
Commercial [Member] | Other [Member] | Pass [Member] | Florida [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		604	709
Commercial [Member] | Other [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		1,617	1,670
Commercial [Member] | Other [Member] | Classified [Member] | New York and Other States [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		1,617	1,670
Commercial [Member] | Other [Member] | Classified [Member] | Florida [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, net		$ 0	$ 0
[1]	Includes New York, New Jersey, Vermont and Massachusetts.

Fair Value of Financial Instr43

Fair Value of Financial Instruments, Part 1 (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Securities available for sale [Abstract]
Total securities available for sale	$ 559,083	$ 571,965
Fair value assets transfers from Level 1 to Level 2	0		$ 0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities available for sale [Abstract]
Total securities available for sale	35	35
Significant Other Observable Inputs (Level 2) [Member]
Securities available for sale [Abstract]
Total securities available for sale	559,048	571,930
Significant Unobservable Inputs (Level 3) [Member]
Securities available for sale [Abstract]
Total securities available for sale	0	0
Carrying Value [Member]
Securities available for sale [Abstract]
Total securities available for sale	559,083	571,965
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities available for sale [Abstract]
U.S. government sponsored enterprises	0	0
State and political subdivisions	0	0
Mortgage backed securities and collateralized mortgage obligations - residential	0	0
Corporate bonds	0	0
Small Business Administration - guaranteed participation securities	0	0
Mortgage backed securities and collateralized mortgage obligations - commercial	0	0
Other securities	0	0
Total securities available for sale	0	0
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Securities available for sale [Abstract]
U.S. government sponsored enterprises	151,327	137,851
State and political subdivisions	525	525
Mortgage backed securities and collateralized mortgage obligations - residential	297,633	315,983
Corporate bonds	35,227	40,162
Small Business Administration - guaranteed participation securities	64,113	67,059
Mortgage backed securities and collateralized mortgage obligations - commercial	9,573	9,700
Other securities	685	685
Total securities available for sale	559,083	571,965
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Securities available for sale [Abstract]
U.S. government sponsored enterprises	0	0
State and political subdivisions	0	0
Mortgage backed securities and collateralized mortgage obligations - residential	0	0
Corporate bonds	0	0
Small Business Administration - guaranteed participation securities	0	0
Mortgage backed securities and collateralized mortgage obligations - commercial	0	0
Other securities	0	0
Total securities available for sale	0	0
Recurring [Member] | Carrying Value [Member]
Securities available for sale [Abstract]
U.S. government sponsored enterprises	151,327	137,851
State and political subdivisions	525	525
Mortgage backed securities and collateralized mortgage obligations - residential	297,633	315,983
Corporate bonds	35,227	40,162
Small Business Administration - guaranteed participation securities	64,113	67,059
Mortgage backed securities and collateralized mortgage obligations - commercial	9,573	9,700
Other securities	685	685
Total securities available for sale	$ 559,083	$ 571,965

Fair Value of Financial Instr44

Fair Value of Financial Instruments, Part 2 (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Impaired loans [Abstract]
Other real estate owned, commercial real estate	$ 358	$ 541
Other real estate owned, residential real estate properties	1,800	2,700
Valuation charge on other real estate owned	199	1,100
Impaired loans	24,433	24,280
Collateral dependent impaired loans	750	844
Gross charge offs, residential impaired loans	$ 36	$ 151
Nonrecurring [Member] | Sales Comparison Approach [Member] | Other Real Estate Owned [Member]
Impaired loans [Abstract]
Unobservable inputs	Adjustments for differences between comparable sales	Adjustments for differences between comparable sales
Nonrecurring [Member] | Sales Comparison Approach [Member] | Other Real Estate Owned [Member] | Minimum [Member]
Impaired loans [Abstract]
Adjustments for differences between comparable sales	1.00%	1.00%
Nonrecurring [Member] | Sales Comparison Approach [Member] | Other Real Estate Owned [Member] | Maximum [Member]
Impaired loans [Abstract]
Adjustments for differences between comparable sales	14.00%	14.00%
Nonrecurring [Member] | Sales Comparison Approach [Member] | Other Real Estate Owned [Member] | Weighted Average [Member]
Impaired loans [Abstract]
Adjustments for differences between comparable sales	7.00%	7.00%
Nonrecurring [Member] | Sales Comparison Approach [Member] | Impaired Loan [Member] | Real Estate Mortgage - 1 to 4 Family [Member]
Impaired loans [Abstract]
Unobservable inputs	Adjustments for differences between comparable sales	Adjustments for differences between comparable sales
Nonrecurring [Member] | Sales Comparison Approach [Member] | Impaired Loan [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | Minimum [Member]
Impaired loans [Abstract]
Adjustments for differences between comparable sales	5.00%	5.00%
Nonrecurring [Member] | Sales Comparison Approach [Member] | Impaired Loan [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | Maximum [Member]
Impaired loans [Abstract]
Adjustments for differences between comparable sales	14.00%	14.00%
Nonrecurring [Member] | Sales Comparison Approach [Member] | Impaired Loan [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | Weighted Average [Member]
Impaired loans [Abstract]
Adjustments for differences between comparable sales	10.00%	10.00%
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets measured at fair value on a non-recurring basis [Abstract]
Other real estate owned	$ 0	$ 0
Impaired loans [Abstract]
Real estate mortgage - 1 to 4 family	0	0
Nonrecurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets measured at fair value on a non-recurring basis [Abstract]
Other real estate owned	0	0
Impaired loans [Abstract]
Real estate mortgage - 1 to 4 family	0	0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets measured at fair value on a non-recurring basis [Abstract]
Other real estate owned	2,190	3,246
Impaired loans [Abstract]
Real estate mortgage - 1 to 4 family	750	844
Nonrecurring [Member] | Carrying Value [Member]
Assets measured at fair value on a non-recurring basis [Abstract]
Other real estate owned	2,190	3,246
Impaired loans [Abstract]
Real estate mortgage - 1 to 4 family	$ 750	$ 844

Fair Value of Financial Instr45

Fair Value of Financial Instruments, Part 3 (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Financial assets [Abstract]
Cash and cash equivalents	$ 617,170	$ 612,740	$ 683,191	$ 707,274
Securities available for sale	559,083	571,965
Held to maturity securities	26,994	28,701
Net loans	3,598,673	3,598,213
Accrued interest receivable	10,579	11,441
Financial liabilities [Abstract]
Demand deposits	403,782	398,399
Interest bearing deposits	3,843,960	3,784,174
Short-term borrowings	203,910	242,991
Accrued interest payable	665	537
Level 1 [Member]
Financial assets [Abstract]
Cash and cash equivalents	617,170	612,740
Securities available for sale	35	35
Held to maturity securities	0	0
Net loans	0	0
Accrued interest receivable	85	243
Financial liabilities [Abstract]
Demand deposits	403,782	398,399
Interest bearing deposits	2,721,854	2,707,961
Short-term borrowings	0	0
Accrued interest payable	75	77
Level 2 [Member]
Financial assets [Abstract]
Cash and cash equivalents	0	0
Securities available for sale	559,048	571,930
Held to maturity securities	26,994	28,701
Net loans	0	0
Accrued interest receivable	2,611	2,440
Financial liabilities [Abstract]
Demand deposits	0	0
Interest bearing deposits	1,122,106	1,076,213
Short-term borrowings	203,910	242,991
Accrued interest payable	590	460
Level 3 [Member]
Financial assets [Abstract]
Cash and cash equivalents	0	0
Securities available for sale	0	0
Held to maturity securities	0	0
Net loans	3,598,673	3,598,213
Accrued interest receivable	7,883	8,758
Financial liabilities [Abstract]
Demand deposits	0	0
Interest bearing deposits	0	0
Short-term borrowings	0	0
Accrued interest payable	0	0
Carrying Value [Member]
Financial assets [Abstract]
Cash and cash equivalents	617,170	612,740
Securities available for sale	559,083	571,965
Held to maturity securities	26,174	27,551
Federal Reserve Bank and Federal Home Loan Bank stock	8,779	8,779
Net loans	3,622,596	3,692,237
Accrued interest receivable	10,579	11,441
Financial liabilities [Abstract]
Demand deposits	403,782	398,399
Interest bearing deposits	3,831,298	3,774,927
Short-term borrowings	203,910	242,991
Accrued interest payable	$ 665	$ 537

Accumulated Other Comprehensi46

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 458,308	$ 432,686
Other comprehensive income (loss) - before reclassifications	(5,302)	707
Amount reclassified from accumulated other comprehensive income	(1,382)	(24)
Tax Cuts and Jobs Act of 2017, Reclassification from AOCI to Retained Earnings, Tax Effect	0
Other comprehensive (loss) income, net of tax	(5,338)	683
Balance	462,097	438,700
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(1,806)	(6,251)
Tax Cuts and Jobs Act of 2017, Reclassification from AOCI to Retained Earnings, Tax Effect	(1,346)
Other comprehensive (loss) income, net of tax	(5,338)	683
Balance	(8,490)	(5,568)
Net Unrealized Holding Gain (Loss) on Securities Available for Sale, Net of Tax [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(5,030)	(6,762)
Other comprehensive income (loss) - before reclassifications	(5,302)	707
Amount reclassified from accumulated other comprehensive income	0	0
Other comprehensive (loss) income, net of tax	(5,302)	707
Balance	(10,332)	(6,055)
Net Change in Net Actuarial (Gain) loss and Prior Service Cost on Pension and Adjustment Postretirement Benefit Plans, Net of Tax [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	3,224	511
Other comprehensive income (loss) - before reclassifications	0	0
Amount reclassified from accumulated other comprehensive income	(36)	(24)
Other comprehensive (loss) income, net of tax	(36)	(24)
Balance	$ 3,188	$ 487

Accumulated Other Comprehensi47

Accumulated Other Comprehensive Income (Loss), Reclassifications out of accumulated other comprehensive income (loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Reclassification Adjustment Out of Accumulated Other Comprehensive Income [Line Items]
Salaries and employee benefits	$ 10,422	$ 10,210
Income tax effect	4,731	6,561
Net income	14,808	10,947
Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member]
Reclassification Adjustment Out of Accumulated Other Comprehensive Income [Line Items]
Net income	(36)	(24)
Amortization of Pension and Postretirement Benefit Items [Member] | Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member]
Reclassification Adjustment Out of Accumulated Other Comprehensive Income [Line Items]
Income tax effect	13	16
Net income	(36)	(24)
Amortization of Net Actuarial Gain (Loss) [Member] | Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member]
Reclassification Adjustment Out of Accumulated Other Comprehensive Income [Line Items]
Salaries and employee benefits	(72)	(63)
Amortization of Prior Service Cost [Member] | Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member]
Reclassification Adjustment Out of Accumulated Other Comprehensive Income [Line Items]
Salaries and employee benefits	$ 23	$ 23

Revenue from Contracts with C48

Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Sources of non-interest income [Abstract]
Other	[1]	$ 617	$ 665
Total non-interest income		4,679	4,727
Overdraft Fees [Member]
Sources of non-interest income [Abstract]
Non-interest income		827	859
Other [Member]
Sources of non-interest income [Abstract]
Non-interest income		114	79
Interchange Income [Member]
Sources of non-interest income [Abstract]
Non-interest income		1,306	1,266
Wealth Management Fees [Member]
Sources of non-interest income [Abstract]
Non-interest income		$ 1,815	$ 1,858
[1]	Not within the scope of ASC 606.