The First of Long Island Corporation (FLIC) 10-Q 9 Aug 17 2017 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Jul. 31, 2017
Document And Entity Information
Entity Registrant Name	FIRST OF LONG ISLAND CORP
Entity Central Index Key	740,663
Trading Symbol	flic
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding (in shares)		24,382,495
Document Type	10-Q
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Assets:
Cash and cash equivalents	$ 56,710	$ 36,929
Investment securities:
Held-to-maturity, at amortized cost (fair value of $9,372 and $11,637)	9,201	11,387
Available-for-sale, at fair value	739,573	815,299
Total securities	748,774	826,686
Loans:
Commercial and industrial	123,791	126,038
Secured by real estate:
Commercial mortgages	1,128,454	1,085,198
Residential mortgages	1,427,555	1,238,431
Home equity lines	88,392	86,461
Consumer and other	5,864	9,293
Total Loans	2,774,056	2,545,421
Allowance for loan losses	(32,136)	(30,057)
Total	2,741,920	2,515,364
Restricted stock, at cost	30,530	31,763
Bank premises and equipment, net	35,654	34,361
Bank-owned life insurance	58,842	33,097
Pension plan assets, net	17,384	17,316
Other assets	15,480	14,804
Total	3,705,294	3,510,320
Deposits:
Checking	850,316	808,311
Savings, NOW and money market	1,647,281	1,519,749
Time, $100,000 and over	203,825	178,918
Time, other	114,186	101,739
Total	2,815,608	2,608,717
Short-term borrowings	136,017	207,012
Long-term debt	412,362	379,212
Accrued expenses and other liabilities	9,061	9,481
Deferred income taxes payable	1,971	68
Total	3,375,019	3,204,490
Stockholders' Equity:
Common stock, par value $.10 per share: Authorized, 40,000,000 shares; Issued and outstanding, 24,129,266 and 23,699,107 shares	2,413	2,370
Surplus	111,569	101,738
Retained earnings	214,787	203,326
Total	328,769	307,434
Accumulated other comprehensive income (loss), net of tax	1,506	(1,604)
Total	330,275	305,830
Total	$ 3,705,294	$ 3,510,320

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Consolidated Balance Sheets [Abstract]
Held-to-maturity, at fair value	$ 9,372	$ 11,637
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	40,000,000	40,000,000
Common stock, shares issued (in shares)	24,129,266	23,699,107
Common stock, shares outstanding (in shares)	24,129,266	23,699,107

Consolidated Statements Of Inco

Consolidated Statements Of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Interest and dividend income:
Loans	$ 23,718	$ 20,241	$ 46,637	$ 40,055
Taxable	1,875	2,020	4,077	3,910
Nontaxable	3,377	3,420	6,754	6,823
Total	28,970	25,681	57,468	50,788
Interest expense:
Savings, NOW and money market deposits	1,574	1,410	3,065	2,343
Time deposits	1,361	1,299	2,549	2,674
Short-term borrowings	340	7	729	131
Long-term debt	1,902	1,692	3,672	3,666
Total	5,177	4,408	10,015	8,814
Net interest income	23,793	21,273	47,453	41,974
Provision for loan losses	1,293	139	2,081	392
Net interest income after provision for loan losses	22,500	21,134	45,372	41,582
Noninterest income:
Investment Management Division income	528	514	1,050	990
Service charges on deposit accounts	691	656	1,394	1,290
Net gains on sales of securities	1	1,844	58	1,844
Other	1,129	717	1,967	1,361
Total	2,349	3,731	4,469	5,485
Noninterest expense:
Salaries	5,938	5,471	11,862	11,049
Employee benefits	1,782	1,780	3,591	3,449
Occupancy and equipment	2,500	2,202	5,021	4,579
Debt extinguishment		1,756		1,756
Other	2,915	3,663	5,675	6,470
Total	13,135	14,872	26,149	27,303
Income before income taxes	11,714	9,993	23,692	19,764
Income tax expense	2,581	2,264	5,478	4,400
Net income	$ 9,133	$ 7,729	$ 18,214	$ 15,364
Earnings per share:
Basic	$ 0.38	$ 0.34	$ 0.76	$ 0.70
Diluted	0.37	0.34	0.75	0.69
Cash dividends declared per share	$ 0.14	$ 0.13	$ 0.28	$ 0.27

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Consolidated Statements Of Comprehensive Income [Abstract]
Net income	$ 9,133	$ 7,729	$ 18,214	$ 15,364
Other comprehensive income:
Change in net unrealized holding gains on available-for-sale securities	4,280	5,511	5,351	10,653
Change in funded status of pension plan	4	61	9	122
Other comprehensive income before income taxes	4,284	5,572	5,360	10,775
Income tax expense	1,798	2,335	2,250	4,607
Other comprehensive income	2,486	3,237	3,110	6,168
Comprehensive income	$ 11,619	$ 10,966	$ 21,324	$ 21,532

Consolidated Statements Of Chan

Consolidated Statements Of Changes In Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance (in shares) at Dec. 31, 2015	14,116,677
Balance at Dec. 31, 2015	$ 1,412	$ 56,931	$ 185,069	$ 7,524	$ 250,936
Net income			15,364		15,364
Other comprehensive income				6,168	6,168
Common stock issued in public offering, net of issuance costs (in shares)	1,300,000
Common stock issued in public offering, net of issuance costs	$ 130	35,132			35,262
Shares withheld upon the vesting and conversion of RSUs (in shares)	(13,393)
Shares withheld upon the vesting and conversion of RSU	$ (1)	(369)			(370)
Common stock issued under stock compensation plans (in shares)	82,762
Common stock issued under stock compensation plans	$ 8	462			470
Common stock issued under dividend reinvestment and stock purchase plan (in shares)	104,648
Common stock issued under dividend reinvestment and stock purchase plan	$ 10	2,889			2,899
Stock-based compensation		914			914
Cash dividends declared			(5,991)		(5,991)
Balance (in shares) at Jun. 30, 2016	15,590,694
Balance at Jun. 30, 2016	$ 1,559	95,959	194,442	13,692	305,652
Balance (in shares) at Dec. 31, 2016	23,699,107
Balance at Dec. 31, 2016	$ 2,370	101,738	203,326	(1,604)	305,830
Net income			18,214		18,214
Other comprehensive income				3,110	3,110
Shares withheld upon the vesting and conversion of RSUs (in shares)	(19,339)
Shares withheld upon the vesting and conversion of RSU	$ (2)	(525)			(527)
Common stock issued under stock compensation plans (in shares)	126,878
Common stock issued under stock compensation plans	$ 13	618			631
Common stock issued under dividend reinvestment and stock purchase plan (in shares)	322,620
Common stock issued under dividend reinvestment and stock purchase plan	$ 32	8,407			8,439
Stock-based compensation		1,331			1,331
Cash dividends declared			(6,753)		(6,753)
Balance (in shares) at Jun. 30, 2017	24,129,266
Balance at Jun. 30, 2017	$ 2,413	$ 111,569	$ 214,787	$ 1,506	$ 330,275

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash Flows From Operating Activities:
Net income	$ 18,214,000	$ 15,364,000
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	2,081,000	392,000
Provision (credit) for deferred income taxes	(348,000)	594,000
Depreciation and amortization	1,713,000	1,590,000
Premium amortization on investment securities, net	1,608,000	1,880,000
Net gains on sales of securities	(58,000)	(1,844,000)
Net loss on sales of loans held-for-sale		5,000
Loss on debt extinguishment		1,756,000
Stock-based compensation expense	1,331,000	914,000
Common stock issued in lieu of cash for director fees	27,000
Accretion of cash surrender value on bank-owned life insurance	(745,000)	(467,000)
Pension expense (credit)	(59,000)	9,000
Increase in other assets	(676,000)	(2,098,000)
Decrease in accrued expenses and other liabilities	(501,000)	(3,138,000)
Net cash provided by operating activities	22,587,000	14,957,000
Proceeds From Sales Of Investment Securities [Abstract]
Held-to-maturity	355,000	123,000
Available-for-sale	40,011,000	40,989,000
Proceeds from maturities and redemptions of investment securities:
Held-to-maturity	3,762,000	3,384,000
Available-for-sale	58,931,000	48,646,000
Purchases of investment securities
Held-to-maturity	(1,883,000)	(1,287,000)
Available-for-sale	(19,462,000)	(203,374,000)
Proceeds from sales of loans held-for-sale		100,000
Net increase in loans	(228,637,000)	(105,400,000)
Net decrease in restricted stock	1,233,000	5,361,000
Purchases of premises and equipment, net	(3,006,000)	(2,787,000)
Purchase of bank-owned life insurance	(25,000,000)
Net cash used in investing activities	(173,696,000)	(214,245,000)
Cash Flows From Financing Activities:
Net increase in deposits	206,891,000	340,180,000
Net decrease in short-term borrowings	(70,995,000)	(153,836,000)
Proceeds from long-term debt	42,050,000	23,500,000
Repayments of long-term debt	(8,900,000)	(31,756,000)
Proceeds from issuance of common stock, net	8,439,000	38,161,000
Proceeds from exercise of stock options	604,000	470,000
Repurchase and retirement of common stock	(527,000)	(370,000)
Cash dividends paid	(6,672,000)	(5,670,000)
Net cash provided by financing activities	170,890,000	210,679,000
Net increase in cash and cash equivalents	19,781,000	11,391,000
Cash and cash equivalents, beginning of year	36,929,000	39,635,000
Cash and cash equivalents, end of period	56,710,000	51,026,000
Cash paid for:
Interest	10,008,000	12,048,000
Income taxes	5,933,000	4,857,000
Noncash investing and financing activities:
Cash dividends payable	$ 3,449,000	$ 3,144,000

Basis Of Presentation

Basis Of Presentation	6 Months Ended
	Jun. 30, 2017
Basis Of Presentation [Abstract]
Basis Of Presentation	1 - BASIS OF PRESENTATION  The accounting and reporting policies of The First of Long Island Corporation (“Corporation”) reflect banking industry practice and conform to generally accepted accounting principles in the United States. In preparing the consolidated financial statements, management is required to make estimates, such as the allowance for loan losses, and assumptions that affect the reported asset and liability balances, revenue and expense amounts, and the disclosure of contingent assets and liabilities. Actual results could differ significantly from those estimates.  The consolidated financial statements include the accounts of the Corporation and its wholly-owned subsidiary, The First National Bank of Long Island (“Bank”). The Bank has two wholly owned subsidiaries: FNY Service Corp., an investment company, and The First of Long Island Agency, Inc. The Bank and FNY Service Corp. jointly own another subsidiary, The First of Long Island REIT, Inc., a real estate investment trust. The consolidated entity is referred to as the “Corporation” and the Bank and its subsidiaries are collectively referred to as the “Bank.” All intercompany balances and amounts have been eliminated. For further information refer to the consolidated financial statements and notes thereto included in the Corporation's Annual Report on Form 10-K for the year ended December 31, 2016 .  The consolidated financial information included herein as of and for the periods ended June 30, 2017 and 2016 is unaudited. However, such information reflects all adjustments which are, in the opinion of management, necessary for a fair statement of results for the interim periods. The December 31, 2016 consolidated balance sheet was derived from the Corporation's December 31, 2016 audited consolidated financial statements. When appropriate, items in the prior year financial statements are reclassified to conform to the current period presentation.  In the fourth quarter of 2016, the Corporation adopted Accounting Standards Update (“ASU”) 2016-09 “Improvements to Employee Share-Based Payment Accounting.” Earnings for the first three quarters of 2016 were adjusted retroactively to reflect the adoption of the ASU effective as of January 1, 2016. The ASU increased net income in the first half of 2017 and 2016 through credits to income tax expense by $597,000 and $314,000 , respectively , and in the second quarter of 2017 and 2016 by $312,000 and $109,000 , respectively .

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Share	2 - EARNINGS PER SHARE  The following table sets forth the calculation of basic and diluted earnings per share (“EPS”) for the periods indicated.      Six Months Ended Three Months Ended  June 30, June 30,  (dollars in thousands, except per share data) 2017 2016 2017 2016  Net income $ 18,214 $ 15,364 $ 9,133 $ 7,729  Income allocated to participating securities (1) 68 65 34 33  Income allocated to common stockholders $ 18,146 $ 15,299 $ 9,099 $ 7,696   Weighted average:  Common shares 23,975,687 21,902,417 24,091,447 22,529,255  Dilutive stock options and restricted stock units (1) 257,063 266,330 249,901 257,975  24,232,750 22,168,747 24,341,348 22,787,230  Earnings per share:  Basic $.76 $.70 $.38 $.34  Diluted .75 .69 .37 .34  (1) Restricted stock units (“RSUs”) awarded in 2016 accrue dividends at the same rate as the dividends declared by the Board of Directors on the Corporation’s common stock. For purposes of computing EPS, these RSUs are considered to participate with common stock in the earnings of the Corporation and, therefore, the Corporation is required to calculate basic and diluted EPS using the two-class method. Under the two-class method, net income for the period is allocated between common stockholders and participating securities according to dividends declared and participation rights in undistributed earnings.

Comprehensive Income

Comprehensive Income	6 Months Ended
	Jun. 30, 2017
Comprehensive Income [Abstract]
Comprehensive Income	3 - COMPREHENSIVE INCOME  Comprehensive income includes net income and other comprehensive income. Other comprehensive income includes revenues, expenses, gains and losses that under generally accepted accounting principles are included in comprehensive income but excluded from net income. Other comprehensive income for the Corporation consists of unrealized holding gains or losses on available-for-sale securities and changes in the funded status of the Bank’s defined benefit pension plan, both net of related income taxes. Accumulated other comprehensive income or loss is recognized as a separate component of stockholders’ equity.  The components of other comprehensive income and the related tax effects are as follows:     Six Months Ended Three Months Ended  June 30, June 30,  2017 2016 2017 2016  (in thousands)  Change in net unrealized holding gains on available-for-sale securities:  Change arising during the period $ 5,408 $ 12,480 $ 4,280 $ 7,338  Reclassification adjustment for gains included in net income (1) (57) (1,827) — (1,827)  Change in net unrealized holding gains on available-for-sale securities 5,351 10,653 4,280 5,511  Tax effect 2,246 4,608 1,796 2,310  3,105 6,045 2,484 3,201  Change in funded status of pension plan:  Amortization of net actuarial loss included in pension expense (2) 9 122 4 61  Tax effect 4 (1) 2 25  5 123 2 36  Other comprehensive income $ 3,110 $ 6,168 $ 2,486 $ 3,237  (1) Reclassification adjustment represents net realized gains arising from the sale of available-for-sale securities. The net realized gains are included in the consolidated statements of income in the line item, “Net gains on sales of securities.” See “Note 4 – Investment Securities” for the income tax expense related to the net realized gains, which is included in the consolidated statements of income in the line item, “Income tax expense.”  (2) Represents the amortization into expense of net actuarial loss relating to the Corporation’s defined benefit pension plan. This item is included in net periodic pension cost (see Note 7) and in the consolidated statements of income in the line item, “Employee benefits.” The related income tax expense is included in the consolidated statements of income in the line item, “Income tax expense.”  The following table sets forth the components of accumulated other comprehensive income ( loss ) , net of tax:      Current  Balance Period Balance  12/31/16 Change 6/30/17  (in thousands)  Unrealized holding gains on available-for-sale securities $ 1,654 $ 3,105 $ 4,759  Unrealized actuarial losses on pension plan (3,258) 5 (3,253)  Accumulated other comprehensive income (loss), net of tax $ (1,604) $ 3,110 $ 1,506 

Investment Securities

Investment Securities	6 Months Ended
	Jun. 30, 2017
Investments Securities [Abstract]
Investment Securities	4 - INVESTMENT SECURITIES  The following tables set forth the amortized cost and estimated fair values of the Bank’s investment securities.      June 30, 2017  Gross Gross  Amortized Unrealized Unrealized Fair  Cost Gains Losses Value  Held-to-Maturity Securities: (in thousands)  State and municipals $ 8,362 $ 117 $ — $ 8,479  Pass-through mortgage securities 334 28 — 362  Collateralized mortgage obligations 505 26 — 531  $ 9,201 $ 171 $ — $ 9,372  Available-for-Sale Securities:  State and municipals $ 443,586 $ 12,735 $ (1,477) $ 454,844  Pass-through mortgage securities 158,948 116 (2,347) 156,717  Collateralized mortgage obligations 129,063 249 (1,300) 128,012  $ 731,597 $ 13,100 $ (5,124) $ 739,573   December 31, 2016  Held-to-Maturity Securities:  State and municipals $ 10,419 $ 177 $ — $ 10,596  Pass-through mortgage securities 361 33 — 394  Collateralized mortgage obligations 607 40 — 647  $ 11,387 $ 250 $ — $ 11,637  Available-for-Sale Securities:  State and municipals $ 444,154 $ 10,137 $ (3,631) $ 450,660  Pass-through mortgage securities 188,527 156 (2,874) 185,809  Collateralized mortgage obligations 179,993 862 (2,025) 178,830  $ 812,674 $ 11,155 $ (8,530) $ 815,299  At June 30, 2017 and December 31, 2016 , investment securities with a carrying value of $453,295,000 and $415,419,000 , respectively, were pledged as collateral to secure public deposits and borrowed funds.  There were no holdings of any one issuer, other than the U.S. Government and its agencies, in an amount greater than 10% of stockholders’ equity at June 30, 2017 and December 31, 2016 .  Securities With Unrealized Losses. The following tables set forth securities with unrealized losses presented by the length of time the securities have been in a continuous unrealized loss position.      June 30, 2017  Less than 12 Months  12 Months or More Total  Fair Unrealized Fair Unrealized Fair Unrealized  Value Loss Value Loss Value Loss  (in thousands)  State and municipals $ 58,324 $ (1,465) $ 1,455 $ (12) $ 59,779 $ (1,477)  Pass-through mortgage securities 136,804 (2,200) 8,225 (147) 145,029 (2,347)  Collateralized mortgage obligations 99,013 (1,126) 6,620 (174) 105,633 (1,300)  Total temporarily impaired $ 294,141 $ (4,791) $ 16,300 $ (333) $ 310,441 $ (5,124)   December 31, 2016  State and municipals $ 117,181 $ (3,631) $ — $ — $ 117,181 $ (3,631)  Pass-through mortgage securities 175,000 (2,874) — — 175,000 (2,874)  Collateralized mortgage obligations 125,424 (1,820) 7,737 (205) 133,161 (2,025)  Total temporarily impaired $ 417,605 $ (8,325) $ 7,737 $ (205) $ 425,342 $ (8,530)  Because the unrealized losses reflected in the preceding tables are deemed by management to be attributable to changes in interest rates and not credit losses, and because management does not have the intent to sell these securities and it is not more likely than not that it will be required to sell these securities before their anticipated recovery, the Bank does not consider these securities to be other-than-temporarily impaired at June 30, 2017 .  Sales of Available-for-Sale Securities. Sales of available-for-sale securities were as follows:      Six Months Ended Three Months Ended  June 30, June 30,  2017 2016 2017 2016  (in thousands)  Proceeds $ 40,011 $ 40,989 $ — $ 40,989   Gross gains $ 366 $ 1,845 $ — $ 1,845  Gross losses (309) (18) — (18)  Net gain $ 57 $ 1,827 $ — $ 1,827  Income tax expense related to the net realized gains was $24,000 for the six months ended June 3 0 , 2017 and $761,000 for the six and three months ended June 30, 2016 .  Sales of Held-to-Maturity Securities. During the second quarter of 2017 the Bank sold one municipal security that was classified as held-to-maturity . The sale was in response to a significant deterioration in the creditworthiness of the issuer. The security sold had a carrying value of $354,000 at the time of sale and the Bank realized a gain upon sale of $1,000 .  During the second quarter of 2016, the Bank sold one mortgage-backed security that was classified as held-to-maturity. The sale occurred after the Bank collected 85% or more of the principal outstanding at acquisition. The security sold had a carrying value of $106,000 at the time of sale and the Bank realized a gain upon sale of $17,000 .  Maturities. The following table sets forth by maturity the amortized cost and fair value of the Bank’s state and municipal securities at June 3 0 , 2017 based on the earlier of their stated maturity or, if applicable, their pre-refunded date. The remaining securities in the Bank’s investment securities portfolio are mortgage-backed securities, consisting of pass-through securities and collateralized mortgage obligations. Although these securities are expected to have substantial periodic repayments they are reflected in the table below in aggregate amounts.      Amortized Cost Fair Value  Held-to-Maturity Securities: (in thousands)  Within one year $ 3,702 $ 3,719  After 1 through 5 years 4,126 4,224  After 5 through 10 years 534 536  After 10 years — —  Mortgage-backed securities 839 893  $ 9,201 $ 9,372  Available-for-Sale Securities:  Within one year $ 16,912 $ 17,172  After 1 through 5 years 79,797 82,739  After 5 through 10 years 172,873 177,968  After 10 years 174,004 176,965  Mortgage-backed securities 288,011 284,729  $ 731,597 $ 739,573 

Loans

Loans	6 Months Ended
	Jun. 30, 2017
Loans [Abstract]
Loans	5 - LOANS  The following tables set forth by class of loans the amount of loans individually and collectively evaluated for impairment and the portion of the allowance for loan losses allocable to such loans.     June 30, 2017  Loans Allowance for Loan Losses  Individually Evaluated for Impairment Collectively Evaluated for Impairment Ending Balance Individually Evaluated for Impairment Collectively Evaluated for Impairment Ending Balance  (in thousands)  Commercial and industrial $ 159 $ 123,632 $ 123,791 $ 50 $ 1,494 $ 1,544  Commercial mortgages:  Multifamily — 607,173 607,173 — 5,921 5,921  Other — 416,183 416,183 — 4,674 4,674  Owner-occupied 7,637 97,461 105,098 843 842 1,685  Residential mortgages:  Closed end 638 1,426,917 1,427,555 19 17,016 17,035  Revolving home equity 1,474 86,918 88,392 507 696 1,203  Consumer and other — 5,864 5,864 — 74 74  $ 9,908 $ 2,764,148 $ 2,774,056 $ 1,419 $ 30,717 $ 32,136   December 31, 2016  Commercial and industrial $ 131 $ 125,907 $ 126,038 $ — $ 1,408 $ 1,408  Commercial mortgages:  Multifamily — 610,385 610,385 — 6,119 6,119  Other — 371,142 371,142 — 4,296 4,296  Owner-occupied 558 103,113 103,671 — 959 959  Residential mortgages:  Closed end 856 1,237,575 1,238,431 45 15,695 15,740  Revolving home equity 1,770 84,691 86,461 482 919 1,401  Consumer and other — 9,293 9,293 — 134 134  $ 3,315 $ 2,542,106 $ 2,545,421 $ 527 $ 29,530 $ 30,057   The following tables present the activity in the allowance for loan losses for the six and three months ended June 3 0 , 2017 and 2016.     Balance at 1/1/17 Chargeoffs Recoveries Provision for Loan Losses (Credit) Balance at 6/30/17  (in thousands)  Commercial and industrial $ 1,408 $ 6 $ 7 $ 135 $ 1,544  Commercial mortgages:  Multifamily 6,119 — — (198) 5,921  Other 4,296 — — 378 4,674  Owner-occupied 959 — — 726 1,685  Residential mortgages:  Closed end 15,740 — 2 1,293 17,035  Revolving home equity 1,401 — — (198) 1,203  Consumer and other 134 6 1 (55) 74  $ 30,057 $ 12 $ 10 $ 2,081 $ 32,136   Balance at 4/1/17 Chargeoffs Recoveries Provision for Loan Losses (Credit) Balance at 6/30/17  (in thousands)  Commercial and industrial $ 1,527 $ — $ 4 $ 13 $ 1,544  Commercial mortgages:  Multifamily 5,806 — — 115 5,921  Other 4,303 — — 371 4,674  Owner-occupied 998 — — 687 1,685  Residential mortgages:  Closed end 16,758 — 1 276 17,035  Revolving home equity 1,339 — — (136) 1,203  Consumer and other 112 6 1 (33) 74  $ 30,843 $ 6 $ 6 $ 1,293 $ 32,136      Balance at 1/1/16 Chargeoffs Recoveries Provision for Loan Losses (Credit) Balance at 6/30/16  (in thousands)  Commercial and industrial $ 928 $ — $ 4 $ 242 $ 1,174  Commercial mortgages:  Multifamily 6,858 — — (512) 6,346  Other 3,674 — — 154 3,828  Owner-occupied 1,047 — — 128 1,175  Residential mortgages:  Closed end 13,639 — 8 501 14,148  Revolving home equity 1,016 — 12 (115) 913  Consumer and other 94 — 5 (6) 93  $ 27,256 $ — $ 29 $ 392 $ 27,677   Balance at 4/1/16 Chargeoffs Recoveries Provision for Loan Losses (Credit) Balance at 6/30/16  (in thousands)  Commercial and industrial $ 1,112 $ — $ — $ 62 $ 1,174  Commercial mortgages:  Multifamily 6,805 — — (459) 6,346  Other 3,853 — — (25) 3,828  Owner-occupied 1,093 — — 82 1,175  Residential mortgages:  Closed end 13,643 — — 505 14,148  Revolving home equity 927 — 9 (23) 913  Consumer and other 91 — 5 (3) 93  $ 27,524 $ — $ 14 $ 139 $ 27,677  For individually impaired loans, the following tables set forth by class of loans at June 30, 2017 and December 31, 2016 the recorded investment, unpaid principal balance and related allowance. The tables also set forth the average recorded investment of individually impaired loans and interest income recognized while the loans were impaired during the six and three months ended June 30, 2017 and 2016 . The recorded investment is the unpaid principal balance of the loans less any interest payments applied to principal and any direct chargeoffs plus or minus net deferred loan costs and fees. Any principal and interest payments received on nonaccrual impaired loans are applied to the recorded investment in the loans. The Bank recognizes interest income on other impaired loans using the accrual method of accounting.      Six Months Ended Three Months Ended  June 30, 2017 June 30, 2017 June 30, 2017  Unpaid Average Interest Average Interest  Recorded Principal Related Recorded Income Recorded Income  Investment Balance Allowance Investment Recognized Investment Recognized  (in thousands)  With no related allowance recorded:  Commercial and industrial $ 61 $ 61 $ — $ 81 $ 2 $ 63 $ —  Commercial mortgages - owner-occupied 545 628 — 549 11 547 7  Residential mortgages - closed end 257 350 — 266 — 261 —  With an allowance recorded:  Commercial and industrial 98 98 50 99 — 99 —  Commercial mortgages - owner-occupied 7,092 7,084 843 7,130 — 7,107 —  Residential mortgages:  Closed end 381 378 19 387 9 383 —  Revolving home equity 1,474 1,474 507 1,480 — 1,475 —  Total:  Commercial and industrial 159 159 50 180 2 162 —  Commercial mortgages - owner-occupied 7,637 7,712 843 7,679 11 7,654 7  Residential mortgages:  Closed end 638 728 19 653 9 644 —  Revolving home equity 1,474 1,474 507 1,480 — 1,475 —  $ 9,908 $ 10,073 $ 1,419 $ 9,992 $ 22 $ 9,935 $ 7       Six Months Ended Three Months Ended  December 31, 2016 June 30, 2016 June 30, 2016  Unpaid Average Interest Average Interest  Recorded Principal Related Recorded Income Recorded Income  Investment Balance Allowance Investment Recognized Investment Recognized  (in thousands)  With no related allowance recorded:  Commercial and industrial $ 131 $ 131 $ — $ — $ — $ — $ —  Commercial mortgages - owner-occupied 558 636 — 4,403 — 4,378 —  Residential mortgages:  Closed end 230 313 — 294 — 289 —  Revolving home equity 280 279 — 520 5 520 3  With an allowance recorded:  Residential mortgages:  Closed end 626 634 45 3,463 68 3,451 34  Revolving home equity 1,490 1,491 482 — — — —  Total:  Commercial and industrial 131 131 — — — — —  Commercial mortgages - owner-occupied 558 636 — 4,403 — 4,378 —  Residential mortgages:  Closed end 856 947 45 3,757 68 3,740 34  Revolving home equity 1,770 1,770 482 520 5 520 3  $ 3,315 $ 3,484 $ 527 $ 8,680 $ 73 $ 8,638 $ 37  Aging of Loans . The following tables present the aging of the recorded investment in loans by class of loans.      June 30, 2017  Past Due Total Past  90 Days or Due Loans &  30-59 Days 60-89 Days More and Nonaccrual Nonaccrual Total  Past Due Past Due Still Accruing Loans Loans Current Loans  (in thousands)  Commercial and industrial $ 123 $ 106 $ — $ 159 $ 388 $ 123,403 $ 123,791  Commercial mortgages:  Multifamily — — — — — 607,173 607,173  Other — — — — — 416,183 416,183  Owner-occupied — — — 7,092 7,092 98,006 105,098  Residential mortgages:  Closed end 1,442 — — 257 1,699 1,425,856 1,427,555  Revolving home equity 2,915 — — 1,474 4,389 84,003 88,392  Consumer and other 2 — — — 2 5,862 5,864  $ 4,482 $ 106 $ — $ 8,982 $ 13,570 $ 2,760,486 $ 2,774,056   December 31, 2016  Commercial and industrial $ 224 $ — $ — $ — $ 224 $ 125,814 $ 126,038  Commercial mortgages:  Multifamily — — — — — 610,385 610,385  Other — — — — — 371,142 371,142  Owner-occupied — — 621 558 1,179 102,492 103,671  Residential mortgages:  Closed end 881 — — 230 1,111 1,237,320 1,238,431  Revolving home equity — — — 1,770 1,770 84,691 86,461  Consumer and other 1 — — — 1 9,292 9,293  $ 1,106 $ — $ 621 $ 2,558 $ 4,285 $ 2,541,136 $ 2,545,421  The loans in the preceding table that were past due 90 days or more and still accruing at December 31, 2016 were well secured and in the process of collection. There were no loans in the process of foreclosure nor did the Bank hold any foreclosed residential real estate property at June 3 0 , 2017 or December 31, 2016.  Troubled Debt Restructurings. A restructuring constitutes a troubled debt restructuring when it includes a concession by the Bank and the borrower is experiencing financial difficulty. In order to determine whether a borrower is experiencing financial difficulty, an evaluation is performed of the probability that the borrower will be in payment default on any of its debt in the foreseeable future without the modification. The Bank performs the evaluation under its internal underwriting policy.  During the six months ended June 30, 2017 and 2016 , the Bank did not modify any loans in troubled debt restructurings.  At June 30, 2017 and December 31, 2016 , the Bank had an allowance for loan losses of $19,000 and $45,000 , respectively, allocated to specific troubled debt restructurings. The Bank had no commitments to lend additional amounts in connection with loans that were classified as troubled debt restructurings.  There were no troubled debt restructurings for which there was a payment default during the six months ended June 3 0 , 2017 and 2016 that were modified during the twelve-month period prior to default. A loan is considered to be in payment default once it is 90 days contractually past due under the modified terms.  Risk Characteristics . Credit risk within the Bank’s loan portfolio primarily stems from factors such as borrower size, geographic concentration, industry concentration, real estate values, local and national economic conditions and environmental impairment of properties securing mortgage loans. The Bank’s commercial loans, including those secured by mortgages, are primarily made to small and medium-sized businesses. Such loans sometimes involve a higher degree of risk than those to larger companies because such businesses may have shorter operating histories, higher debt-to-equity ratios and may lack sophistication in internal record keeping and financial and operational controls. In addition, the majority of the Bank’s loans are made to businesses and consumers on Long Island and in the boroughs of New York City, and a large percentage of these loans are mortgage loans secured by properties located in those areas. The primary source of repayment for multifamily loans is cash flows from the underlying properties, a substantial portion of which are rent stabilized or rent controlled. Such cash flows are dependent on the strength of the local economy.  Credit Quality Indicators. The Bank categorizes loans into risk categories based on relevant information about the borrower’s ability to service their debt including, but not limited to, current financial information for the borrower and any guarantors, payment experience, credit underwriting documentation, public records and current economic trends.  Commercial and industrial loans and commercial mortgage loans are risk rated utilizing a ten point rating system. The ten point risk rating system is described hereinafter.   Internally Assigned Risk Rating 1 – 2 Cash flow is of high quality and stable. Borrower has very good liquidity and ready access to traditional sources of credit. This category also includes loans to borrowers secured by cash and/or marketable securities within approved margin requirements. 3 – 4 Cash flow quality is strong, but shows some variability. Borrower has good liquidity and asset quality. Borrower has access to traditional sources of credit with minimal restrictions. 5 – 6 Cash flow quality is acceptable but shows some variability. Liquidity varies with operating cycle and assets provide an adequate margin of protection. Borrower has access to traditional sources of credit, but generally on a secured basis. 7 Watch - Cash flow has a high degree of variability and subject to economic downturns. Liquidity is strained and the ability of the borrower to access traditional sources of credit is diminished. 8 Special Mention - The borrower has potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or in the Bank’s credit position at some future date. Special mention assets are not adversely classified and do not expose the Bank to risk sufficient to warrant adverse classification. 9 Substandard - Loans are inadequately protected by the current sound worth and paying capacity of the borrower or the collateral pledged, if any. Loans so classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected. 10 Doubtful - Loans have all the inherent weaknesses of those classified substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable.  Risk ratings on commercial and industrial loans and commercial mortgages are initially assigned by the lending officer together with any necessary approval authority. The ratings are periodically reviewed and evaluated based upon borrower contact, credit department review or independent loan review.  The Bank's loan risk rating and review policy establishes requirements for the annual review of commercial real estate and commercial and industrial loans. The requirements include details of the scope of coverage and selection process based on loan-type and risk rating. Among other things, at least 60% of the recorded investment of commercial real estate loans as of December 31 of the prior year must be reviewed annually. The frequency of the review of other loans is determined by the Bank’s ongoing assessments of the borrower’s condition.  Residential mortgage loans, revolving home equity lines and other consumer loans are risk rated utilizing a three point rating system. In most cases, the borrower’s credit score dictates the risk rating. However, regardless of credit score, loans that are on management’s watch list or have been criticized or classified by management are assigned a risk rating of 3. A credit score is a tool used in the Bank’s loan approval process, and a minimum score of 680 is generally required for new loans. Credit scores for each borrower are updated at least annually. The risk ratings along with their definitions are as follows:   Internally Assigned Risk Rating 1 Credit score is equal to or greater than 680. 2 Credit score is 635 to 679. 3 Credit score is below 635 or, regardless of credit score, the loan has been classified, criticized or placed on watch.  The following tables present the recorded investment in commercial and industrial loans and commercial mortgage loans by class of loans and risk rating. Loans shown as Pass are all loans other than those risk rated Watch, Special Mention, Substandard or Doubtful.      June 30, 2017  Internally Assigned Risk Rating  Special  Pass Watch Mention Substandard Doubtful Total  (in thousands)  Commercial and industrial $ 122,588 $ 708 $ 336 $ 159 $ $ 123,791  Commercial mortgages:  Multifamily 597,595 2,381 7,197 — 607,173  Other 405,654 7,692 2,837 — 416,183  Owner-occupied 92,988 2,974 1,499 7,637 105,098  $ 1,218,825 $ 13,755 $ 11,869 $ 7,796 $ — $ 1,252,245   December 31, 2016  Commercial and industrial $ 125,097 $ 810 $ — $ 131 $ — $ 126,038  Commercial mortgages:  Multifamily 603,103 — 7,282 — — 610,385  Other 369,740 1,402 — — — 371,142  Owner-occupied 102,725 389 — 557 — 103,671  $ 1,200,665 $ 2,601 $ 7,282 $ 688 $ — $ 1,211,236  The following tables present the recorded investment in residential mortgage loans, home equity lines and other consumer loans by class of loans and risk rating. Loans shown as Pass are all loans other than those risk rated Watch, Special Mention, Substandard or Doubtful.      June 30, 2017  Internally Assigned Risk Rating  Special  Pass Watch Mention Substandard Doubtful Total  (in thousands)  Residential mortgages:  Closed end $ 1,424,616 $ 2,301 $ — $ 638 $ — $ 1,427,555  Revolving home equity 85,548 661 709 1,474 — 88,392  Consumer and other 5,462 — — — — 5,462  $ 1,515,626 $ 2,962 $ 709 $ 2,112 $ — $ 1,521,409   December 31, 2016  Residential mortgages:  Closed end $ 1,236,152 $ 982 $ 441 $ 856 $ — $ 1,238,431  Revolving home equity 84,189 — 501 1,771 — 86,461  Consumer and other 8,614 — — — — 8,614  $ 1,328,955 $ 982 $ 942 $ 2,627 $ — $ 1,333,506  Deposit account overdrafts were $402,000 and $679,000 at June 3 0 , 2017 and December 31, 2016, respectively. Overdrafts are not assigned a risk rating and are therefore excluded from consumer loans in the tables above.

Stock-based Compensation

Stock-based Compensation	6 Months Ended
	Jun. 30, 2017
Stock-based Compensation [Abstract]
Stock-based Compensation	6 - STOCK-BASED COMPENSATION  On April 22, 2014, the stockholders of the Corporation approved the 2014 Equity Incentive Plan (“2014 Plan”). Upon approval of the 2014 Plan, no further awards could be made under the 2006 Stock Compensation Plan (“2006 Plan”).  2014 Plan. Under the 2014 Plan, awards may be granted to employees and non-employee directors as non-qualified stock options (“NQSOs”), stock appreciation rights (“SARs”), restricted stock awards, RSUs, or any combination thereof, any of which may be subject to performance-based vesting conditions. Awards may also be granted to employees as incentive stock options (“ISOs”). The exercise price of ISOs and NQSOs granted under the 2014 Plan may not be less than the fair market value of the Corporation’s common stock on the date the stock option is granted. The 2014 Plan is administered by the Compensation Committee of the Board of Directors. Almost all of the awards granted to date under the 2014 Plan are RSUs. All awards granted under the 2014 Plan will immediately vest upon an involuntary termination following a change in control, total and permanent disability, as defined, or death, and with certain exceptions will immediately vest in the event of retirement, as defined. The Corporation has 2,250,000 shares of common stock reserved for awards under the 2014 Plan. Awards granted under the 2006 Plan that expire or are forfeited after April 22, 2014 will be added to the number of shares of common stock reserved for issuance of awards under the 2014 Plan. All of the 2,250,000 shares may be issued pursuant to the exercise of stock options or SARs. A maximum of 787,500 shares may be issued as restricted stock awards or RSUs. At June 30, 2017, 1,935,653 shares of common stock remain available for issuance of awards under the 2014 Plan of which 455,199 shares remain available for issuance as restricted stock awards or RSUs.  In 2017, 93,579 RSUs were awarded under the 2014 Plan, including 59,083 performance-based RSUs that vest based on the financial performance of the Corporation in 2019, 31,696 RSUs that vest in equal annual installments at the end of one , two and three years of service, 300 RSUs that vest at the end of a three -year service-based vesting period and 2,500 RSUs that vest at the end of a four -year service-based vesting period.  2006 Plan. The 2006 Plan was approved by the stockholders of the Corporation on April 18, 2006. The 2006 Plan permitted the granting of stock options, SARs, restricted stock awards and RSUs to employees and non-employee directors. Under the terms of the 2006 Plan, stock options and SARs could not have an exercise price that was less than 100% of the fair market value of one share of the underlying common stock on the date of grant. Through December 31, 2011, equity grants to executive officers and directors under the 2006 Plan consisted of a combination of NQSOs and RSUs, while equity grants to other officers consisted solely of NQSOs. Beginning in 2012, equity grants under the 2006 Plan consisted solely of RSUs.  Fair Value of RSUs. The grant date fair value of RSUs awarded prior to 2016 and in 2017 is equal to the market price of the shares underlying the awards on the grant date, discounted for dividends that are not paid or accrued on these RSUs. RSUs awarded in 2016 accrue dividends at the same rate as the dividends declared by the Board of Directors on the Corporation’s common stock. The grant date fair value of the 2016 RSU awards is equal to the market price of the shares underlying the awards on the grant date.  Fair Value of Stock Options. The grant date fair value of option awards is estimated on the date of grant using the Black-Scholes option pricing model.  Compensation Expense. The Corporation recorded compensation expense for share-based payments of $1,331,000 and $914,000 and recognized related income tax benefits of $559,000 and $383,000 for the six months ended June 30, 2017 and 2016, respectively.  Stock Option Activity. The following table presents a summary of options outstanding under the Corporation’s stock-based compensation plans as of June 30, 2017, and changes during the six month period then ended.      Weighted-  Weighted- Average Aggregate  Average Remaining Intrinsic  Number of Exercise Contractual Value  Options Price Term (yrs.) (in thousands)  Outstanding at January 1, 2017 257,262 $ 10.61  Exercised (60,697) 9.95  Forfeited or expired — —  Outstanding at June 30, 2017 196,565 $ 10.82 2.24 $ 3,495  Exercisable at June 30, 2017 196,115 $ 10.80 2.22 $ 3,491  All options outstanding at June 30, 2017 are either fully vested or expected to vest. The total intrinsic value of options exercised during the first six months of 2017 and 2016 was $1,062,000 and $421,000 , respectively.  RSU Activity. The following table presents a summary of RSUs outstanding under the Corporation’s stock-based compensation plans as of June 30, 2017 and changes during the six month period then ended.      Weighted-  Weighted- Average Aggregate  Average Remaining Intrinsic  Number of Grant-Date Contractual Value  RSUs Fair Value Term (yrs.) (in thousands)  Outstanding at January 1, 2017 245,010 $ 16.52  Granted 93,579 26.25  Converted (65,205) 17.48  Forfeited — —  Outstanding at June 30, 2017 273,384 $ 19.62 1.42 $ 7,819  Vested and Convertible at June 30, 2017 — $ — — $ —  The number of RSUs outstanding at January 1, 2017 in the table above represents the maximum number of shares of the Corporation’s common stock into which the RSUs can be converted. The performance-based RSUs granted in 2017 have a maximum payout potential of 1.25 shares of the Corporation’s common stock for each RSU awarded. All of the RSUs outstanding at June 30, 2017 are currently expected to vest and become convertible in the future. The total intrinsic value of RSUs converted during the first six months of 2017 and 2016 was $1,779,000 and $1,445,000 , respectively.  Unrecognized Compensation Cost. As of June 30, 2017, there was $2,491,000 of total unrecognized compensation cost related to non-vested equity awards comprised of $3,000 for stock options and $2,488,000 for RSUs. The total cost is expected to be recognized over a weighted-average period of 1.1 years, which is based on weighted-average periods of 2.9 years and 1.1 years for stock options and RSUs, respectively.  Cash Received and Tax Benefits Realized. Cash received from stock option exercises for the six months ended June 30, 2017 and 2016 was $604,000 and $470,000 , respectively. Tax benefits from stock option exercises for the six months ended June 30, 2017 and 2016 were $445,000 and $162,000 , respectively.  Other. No cash was used to settle stock options during the first six months of 2017 or 2016. The Corporation uses newly issued shares to settle stock option exercises and for the conversion of RSUs. During the first half of 2017, 976 shares of the Corporation’s common stock were issued to a member of the Board of Directors in payment of director fees.

Defined Benefit Pension Plan

Defined Benefit Pension Plan	6 Months Ended
	Jun. 30, 2017
Defined Benefits Pension Plan [Abstract]
Defined Benefit Pension Plan	7 - DEFINED BENEFIT PENSION PLAN  The following table sets forth the components of net periodic pension cost.      Six Months Ended Three Months Ended  June 30, June 30,  2017 2016 2017 2016  (in thousands)  Service cost plus expected expenses and net of  expected plan participant contributions $ 607 $ 572 $ 303 $ 286  Interest cost 795 792 397 396  Expected return on plan assets (1,470) (1,477) (734) (738)  Amortization of net actuarial loss 9 122 4 61  Net pension cost (credit) $ (59) $ 9 $ (30) $ 5  The Bank makes cash contributions to the pension plan (“Plan”) which comply with the funding requirements of applicable Federal laws and regulations. For funding purposes, the laws and regulations set forth both minimum required and maximum tax-deductible contributions. The Bank has no minimum required pension contribution for the Plan year ending September 30, 2017 and it cannot make a tax-deductible contribution for the tax year beginning January 1, 2017.

Fair Value Of Financial Instrum

Fair Value Of Financial Instruments	6 Months Ended
	Jun. 30, 2017
Fair Value Of Financial Instruments [Abstract]
Fair Value Of Financial Instruments	8 - FAIR V ALUE OF FINANCIAL INSTRUMENTS  Financial Instruments Recorded at Fair Value . When measuring fair value, the Corporation uses a fair value hierarchy, which is designed to maximize the use of observable inputs and minimize the use of unobservable inputs. The hierarchy involves three levels of inputs that may be used to measure fair value:  Level 1: Quoted prices (unadjusted) in active markets for identical assets or liabilities that the Corporation has the ability to access at the measurement date.  Level 2: Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; or inputs other than quoted prices that are observable or can be corroborated by observable market data.  Level 3: Significant unobservable inputs that reflect the Corporation’s own assumptions about the assumptions that market participants would use in pricing an asset or liability.  The Corporation deems transfers between levels of the fair value hierarchy to have occurred on the date of the event or change in circumstance that caused the transfer. There were no transfers between levels of the fair value hierarchy during the six months ended June 3 0 , 2017 or 2016.  The fair values of the Corporation’s investment securities designated as available-for-sale at June 3 0 , 2017 and December 31, 2016 are set forth in the tables that follow. These values are determined on a recurring basis using matrix pricing (Level 2 inputs). Matrix pricing, which is a mathematical technique widely used in the industry to value debt securities, does not rely exclusively on quoted prices for the specific securities but rather on the relationship of such securities to other benchmark quoted securities.      Fair Value Measurements Using:  Quoted Prices Significant  in Active Other Significant  Markets for Observable Unobservable  Identical Assets Inputs Inputs  Total (Level 1) (Level 2) (Level 3)  (in thousands)  June 30, 2017:  Available-for-Sale Securities:  State and municipals $ 454,844 $ — $ 454,844 $ —  Pass-through mortgage securities 156,717 — 156,717 —  Collateralized mortgage obligations 128,012 — 128,012 —  $ 739,573 $ — $ 739,573 $ —   December 31, 2016:  Available-for-Sale Securities:  State and municipals $ 450,660 $ — $ 450,660 $ —  Pass-through mortgage securities 185,809 — 185,809 —  Collateralized mortgage obligations 178,830 — 178,830 —  $ 815,299 $ — $ 815,299 $ —  Assets measured at fair value on a nonrecurring basis at June 3 0 , 2017 and December 31, 2016, are set forth in the table that follows. Real estate appraisals utilized in measuring the fair value of impaired loans may employ a single valuation approach or a combination of approaches including comparable sales and the income approach. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between the comparable sales and income data available. In arriving at fair value, the Corporation adjusts the value set forth in the appraisal by deducting costs to sell and a distressed sale adjustment when appropriate. The adjustments made by the appraisers and the Corporation are deemed to be significant unobservable inputs and therefore result in a Level 3 classification of the inputs used for determining the fair value of impaired loans. Because the Corporation has a small amount of impaired loans measured at fair value, the impact of unobservable inputs on the Corporation’s financial statements is not material.      Fair Value Measurements Using:  Quoted Prices Significant  in Active Other Significant  Markets for Observable Unobservable  Identical Assets Inputs Inputs  Total (Level 1) (Level 2) (Level 3)  (in thousands)  June 30, 2017:  Impaired loan:  Residential mortgage - revolving home equity $ 967 $ — $ — $ 967  Commercial mortgage - owner occupied 6,249 — — 6,249  $ 7,216 $ — $ — $ 7,216  December 31, 2016:  Impaired loan:  Residential mortgage - revolving home equity $ 1,009 $ — $ — $ 1,009  The impaired loan s set forth in the preceding table had principal balances of $8,566,000 and $1,491,000 at June 3 0 , 2017 and December 31, 2016, respectively, and valuation allowances of $1,350,000 and $482,000 , respectively. During the six months ended June 3 0 , 2017 and 2016, the Corporation recorded provisions (credit) for loan losses of $868,000 and $(9,000) , respectively, for impaired loans measured at fair value.  Financial Instruments Not Recorded at Fair Value. Fair value estimates are made at a specific point in time. Such estimates are generally subjective in nature and dependent upon a number of significant assumptions associated with each financial instrument or group of similar financial instruments, including estimates of discount rates, risks associated with specific financial instruments, estimates of future cash flows, and relevant available market information. Changes in assumptions could significantly affect the estimates. In addition, fair value estimates do not reflect the value of anticipated future business, premiums or discounts that could result from offering for sale at one time the Corporation’s entire holdings of a particular financial instrument, or the tax consequences of realizing gains or losses on the sale of financial instruments.  The following table sets forth the carrying amounts and estimated fair values of financial instruments that are not recorded at fair value in the Corporation’s financial statements.      Level of June 30, 2017 December 31, 2016  Fair Value Carrying Carrying  Hierarchy Amount Fair Value Amount Fair Value  (in thousands)  Financial Assets:  Cash and cash equivalents Level 1 $ 56,710 $ 56,710 $ 36,929 $ 36,929  Held-to-maturity securities Level 2 7,203 7,374 9,904 10,154  Held-to-maturity securities Level 3 1,998 1,998 1,483 1,483  Loans Level 3 2,734,704 2,689,690 2,514,355 2,472,849  Restricted stock Level 1 30,530 30,530 31,763 31,763  Accrued interest receivable:  Investment securities Level 2 4,233 4,233 4,564 4,564  Loans Level 3 6,949 6,949 6,418 6,418  Financial Liabilities:  Checking deposits Level 1 850,316 850,316 808,311 808,311  Savings, NOW and money market deposits Level 1 1,647,281 1,647,281 1,519,749 1,519,749  Time deposits Level 2 318,011 320,608 280,657 282,024  Short-term borrowings Level 1 136,017 136,017 207,012 207,012  Long-term debt Level 2 412,362 411,069 379,212 375,003  Accrued interest payable:  Checking, savings, NOW and money  market deposits Level 1 124 124 160 160  Time deposits Level 2 34 34 25 25  Short-term borrowings Level 1 4 4 8 8  Long-term debt Level 2 629 629 590 590  The following methods and assumptions are used by the Corporation in measuring the fair value of financial instruments disclosed in the preceding table.  Cash and cash equivalents . The recorded book value of cash and cash equivalents is their fair value.  Investment securities. Fair values are based on quoted prices for similar assets in active markets or derived principally from observable market data.  Loans . The total loan portfolio is divided into three segments: (1) residential mortgages; (2) commercial mortgages and commercial loans; and (3) consumer loans. Each segment is further divided into pools of loans with similar financial characteristics (i.e. product type, fixed versus variable rate, time to rate reset, length of term, conforming versus nonconforming). Cash flows for each pool, including estimated prepayments if applicable, are discounted utilizing market or internal benchmarks which management believes are reflective of current market rates for similar loan products. The discounted value of the cash flows is reduced by the related allowance for loan losses to arrive at an estimate of fair value.  Restricted stock . The recorded book value of Federal Home Loan Bank stock and Federal Reserve Bank stock is their fair value because the stock is redeemable at cost.  Deposit liabilities . The fair value of deposits with no stated maturity, such as checking deposits, money market deposits, NOW accounts and savings deposits, is equal to their recorded book value. The fair value of time deposits is based on the discounted value of contractual cash flows. The discount rate is equivalent to the rate at which the Bank could currently replace these deposits with wholesale borrowings from the Federal Home Loan Bank.  Borrowed funds . For short-term borrowings maturing within ninety days, the recorded book value is a reasonable estimate of fair value. The fair value of long-term debt is based on the discounted value of contractual cash flows. The discount rate is equivalent to the rate at which the Bank could currently replace these borrowings with wholesale borrowings from the Federal Home Loan Bank.  Accrued interest receivable and payable . For these short-term instruments, the recorded book value is a reasonable estimate of fair value.  Off-balance-sheet items. The fair value of off-balance sheet items is not considered to be material.

Impact Of Issued But Not Yet Ef

Impact Of Issued But Not Yet Effective Accounting Standards	6 Months Ended
	Jun. 30, 2017
Impact Of Issued But Not Yet Effective Accounting Standards [Abstract]
Impact Of Issued But Not Yet Effective Accounting Standards	9 - IMPACT OF ISSUED BUT NOT YET EFFECTIVE ACCOUNTING STANDARDS  The pronouncements discussed in this section are not intended to be an all-inclusive list and should be read in conjunction with the disclosure of issued but not yet effective accounting standards in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2016 and Quarterly Report on Form 10-Q for the quarter ended March 31, 2017 .  In May 2014, the Federal Accounting Standards Board (“FASB”) issued ASU 2014-09 “Revenue from Contracts with Customers.” The amendments in ASU 2014-09 provide a comprehensive framework for addressing revenue recognition issues that can be applied to all contracts with customers. While the guidance in ASU 2014-09 supersedes most existing industry-specific revenue recognition accounting guidance, much of a bank’s revenue comes from financial instruments such as debt securities and loans that are scoped-out of the guidance. The amendments in ASU 2014-09 also include improved disclosures to enable users of financial statements to better understand the nature, amount, timing and uncertainty of revenue that is recognized. For public entities such as the Corporation, ASU 2014-09, as amended, is effective for interim and annual reporting periods beginning after December 15, 2017. Early adoption is permitted for interim and annual reporting periods beginning after December 15, 2016. Management has identified the revenue streams that are within the scope of the ASU and is nearly complete in evaluating them to determine the impact that the amendments in the ASU could have on the Corporation’s financial position, results of operations and disclosures. Based on the work completed to date, management currently believes that implementation of ASU 2014-09 in 2018 will result in enhancements to certain revenue recognition disclosures, but that the amendments in the ASU will not have a material impact on the Corporation’s financial position or results of operations.  In June 2016, the FASB issued ASU 2016-13 “Measurement of Credit Losses on Financial Instruments.” ASU 2016-13 affects entities holding financial assets that are not accounted for at fair value through net income, including loans, debt securities, and other financial assets. The ASU requires financial assets measured at amortized cost to be presented at the net amount expected to be collected by recording an allowance for credit losses. ASU 2016-13 is effective for interim and annual reporting periods beginning after December 15, 2019. Early adoption is permitted beginning after December 15, 2018, including interim periods within those fiscal years. Management has established an internal committee to manage the implementation of the ASU. The committee is led by the Bank’s Chief Accounting Officer and includes the Chief Financial Officer and Chief Risk Officer. A broader advisory group has been established to assist in implementing the ASU and includes representatives of the Bank’s loan operations, credit administration, lending and technology functions. The committee is in the process of reviewing and evaluating third-party software solutions, and is analyzing the provisions of the ASU to understand the impact that it will have on the Corporation’s financial position, results of operations and disclosures.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Calculation Of Earnings Per Share	   Six Months Ended Three Months Ended  June 30, June 30,  (dollars in thousands, except per share data) 2017 2016 2017 2016  Net income $ 18,214 $ 15,364 $ 9,133 $ 7,729  Income allocated to participating securities (1) 68 65 34 33  Income allocated to common stockholders $ 18,146 $ 15,299 $ 9,099 $ 7,696   Weighted average:  Common shares 23,975,687 21,902,417 24,091,447 22,529,255  Dilutive stock options and restricted stock units (1) 257,063 266,330 249,901 257,975  24,232,750 22,168,747 24,341,348 22,787,230  Earnings per share:  Basic $.76 $.70 $.38 $.34  Diluted .75 .69 .37 .34  (1) Restricted stock units (“RSUs”) awarded in 2016 accrue dividends at the same rate as the dividends declared by the Board of Directors on the Corporation’s common stock. For purposes of computing EPS, these RSUs are considered to participate with common stock in the earnings of the Corporation and, therefore, the Corporation is required to calculate basic and diluted EPS using the two-class method. Under the two-class method, net income for the period is allocated between common stockholders and participating securities according to dividends declared and participation rights in undistributed earnings.

Comprehensive Income (Tables)

Comprehensive Income (Tables)	6 Months Ended
	Jun. 30, 2017
Comprehensive Income [Abstract]
Components Of Other Comprehensive Income And Related Tax Effects	   Six Months Ended Three Months Ended  June 30, June 30,  2017 2016 2017 2016  (in thousands)  Change in net unrealized holding gains on available-for-sale securities:  Change arising during the period $ 5,408 $ 12,480 $ 4,280 $ 7,338  Reclassification adjustment for gains included in net income (1) (57) (1,827) — (1,827)  Change in net unrealized holding gains on available-for-sale securities 5,351 10,653 4,280 5,511  Tax effect 2,246 4,608 1,796 2,310  3,105 6,045 2,484 3,201  Change in funded status of pension plan:  Amortization of net actuarial loss included in pension expense (2) 9 122 4 61  Tax effect 4 (1) 2 25  5 123 2 36  Other comprehensive income $ 3,110 $ 6,168 $ 2,486 $ 3,237  (1) Reclassification adjustment represents net realized gains arising from the sale of available-for-sale securities. The net realized gains are included in the consolidated statements of income in the line item, “Net gains on sales of securities.” See “Note 4 – Investment Securities” for the income tax expense related to the net realized gains, which is included in the consolidated statements of income in the line item, “Income tax expense.”  (2) Represents the amortization into expense of net actuarial loss relating to the Corporation’s defined benefit pension plan. This item is included in net periodic pension cost (see Note 7) and in the consolidated statements of income in the line item, “Employee benefits.” The related income tax expense is included in the consolidated statements of income in the line item, “Income tax expense.”
Components Of Accumulated Other Comprehensive Loss, Net Of Tax	   Current  Balance Period Balance  12/31/16 Change 6/30/17  (in thousands)  Unrealized holding gains on available-for-sale securities $ 1,654 $ 3,105 $ 4,759  Unrealized actuarial losses on pension plan (3,258) 5 (3,253)  Accumulated other comprehensive income (loss), net of tax $ (1,604) $ 3,110 $ 1,506 

Investment Securities (Tables)

Investment Securities (Tables)	6 Months Ended
	Jun. 30, 2017
Investments Securities [Abstract]
Amortization Cost And Estimated Fair Value Of Investment Securities	   June 30, 2017  Gross Gross  Amortized Unrealized Unrealized Fair  Cost Gains Losses Value  Held-to-Maturity Securities: (in thousands)  State and municipals $ 8,362 $ 117 $ — $ 8,479  Pass-through mortgage securities 334 28 — 362  Collateralized mortgage obligations 505 26 — 531  $ 9,201 $ 171 $ — $ 9,372  Available-for-Sale Securities:  State and municipals $ 443,586 $ 12,735 $ (1,477) $ 454,844  Pass-through mortgage securities 158,948 116 (2,347) 156,717  Collateralized mortgage obligations 129,063 249 (1,300) 128,012  $ 731,597 $ 13,100 $ (5,124) $ 739,573   December 31, 2016  Held-to-Maturity Securities:  State and municipals $ 10,419 $ 177 $ — $ 10,596  Pass-through mortgage securities 361 33 — 394  Collateralized mortgage obligations 607 40 — 647  $ 11,387 $ 250 $ — $ 11,637  Available-for-Sale Securities:  State and municipals $ 444,154 $ 10,137 $ (3,631) $ 450,660  Pass-through mortgage securities 188,527 156 (2,874) 185,809  Collateralized mortgage obligations 179,993 862 (2,025) 178,830  $ 812,674 $ 11,155 $ (8,530) $ 815,299 
Securities With A Continuous Unrealized Losses Position	   June 30, 2017  Less than 12 Months  12 Months or More Total  Fair Unrealized Fair Unrealized Fair Unrealized  Value Loss Value Loss Value Loss  (in thousands)  State and municipals $ 58,324 $ (1,465) $ 1,455 $ (12) $ 59,779 $ (1,477)  Pass-through mortgage securities 136,804 (2,200) 8,225 (147) 145,029 (2,347)  Collateralized mortgage obligations 99,013 (1,126) 6,620 (174) 105,633 (1,300)  Total temporarily impaired $ 294,141 $ (4,791) $ 16,300 $ (333) $ 310,441 $ (5,124)   December 31, 2016  State and municipals $ 117,181 $ (3,631) $ — $ — $ 117,181 $ (3,631)  Pass-through mortgage securities 175,000 (2,874) — — 175,000 (2,874)  Collateralized mortgage obligations 125,424 (1,820) 7,737 (205) 133,161 (2,025)  Total temporarily impaired $ 417,605 $ (8,325) $ 7,737 $ (205) $ 425,342 $ (8,530) 
Sales Of Available-For-Sale Securities	   Six Months Ended Three Months Ended  June 30, June 30,  2017 2016 2017 2016  (in thousands)  Proceeds $ 40,011 $ 40,989 $ — $ 40,989   Gross gains $ 366 $ 1,845 $ — $ 1,845  Gross losses (309) (18) — (18)  Net gain $ 57 $ 1,827 $ — $ 1,827 
Maturities	   Amortized Cost Fair Value  Held-to-Maturity Securities: (in thousands)  Within one year $ 3,702 $ 3,719  After 1 through 5 years 4,126 4,224  After 5 through 10 years 534 536  After 10 years — —  Mortgage-backed securities 839 893  $ 9,201 $ 9,372  Available-for-Sale Securities:  Within one year $ 16,912 $ 17,172  After 1 through 5 years 79,797 82,739  After 5 through 10 years 172,873 177,968  After 10 years 174,004 176,965  Mortgage-backed securities 288,011 284,729  $ 731,597 $ 739,573 

Loans (Tables)

Loans (Tables)	6 Months Ended
	Jun. 30, 2017
Loans [Abstract]
Loans Individually And Collectively Evaluated For Impairment	   June 30, 2017  Loans Allowance for Loan Losses  Individually Evaluated for Impairment Collectively Evaluated for Impairment Ending Balance Individually Evaluated for Impairment Collectively Evaluated for Impairment Ending Balance  (in thousands)  Commercial and industrial $ 159 $ 123,632 $ 123,791 $ 50 $ 1,494 $ 1,544  Commercial mortgages:  Multifamily — 607,173 607,173 — 5,921 5,921  Other — 416,183 416,183 — 4,674 4,674  Owner-occupied 7,637 97,461 105,098 843 842 1,685  Residential mortgages:  Closed end 638 1,426,917 1,427,555 19 17,016 17,035  Revolving home equity 1,474 86,918 88,392 507 696 1,203  Consumer and other — 5,864 5,864 — 74 74  $ 9,908 $ 2,764,148 $ 2,774,056 $ 1,419 $ 30,717 $ 32,136   December 31, 2016  Commercial and industrial $ 131 $ 125,907 $ 126,038 $ — $ 1,408 $ 1,408  Commercial mortgages:  Multifamily — 610,385 610,385 — 6,119 6,119  Other — 371,142 371,142 — 4,296 4,296  Owner-occupied 558 103,113 103,671 — 959 959  Residential mortgages:  Closed end 856 1,237,575 1,238,431 45 15,695 15,740  Revolving home equity 1,770 84,691 86,461 482 919 1,401  Consumer and other — 9,293 9,293 — 134 134  $ 3,315 $ 2,542,106 $ 2,545,421 $ 527 $ 29,530 $ 30,057 
Allowance For Loan Losses	   Balance at 1/1/17 Chargeoffs Recoveries Provision for Loan Losses (Credit) Balance at 6/30/17  (in thousands)  Commercial and industrial $ 1,408 $ 6 $ 7 $ 135 $ 1,544  Commercial mortgages:  Multifamily 6,119 — — (198) 5,921  Other 4,296 — — 378 4,674  Owner-occupied 959 — — 726 1,685  Residential mortgages:  Closed end 15,740 — 2 1,293 17,035  Revolving home equity 1,401 — — (198) 1,203  Consumer and other 134 6 1 (55) 74  $ 30,057 $ 12 $ 10 $ 2,081 $ 32,136   Balance at 4/1/17 Chargeoffs Recoveries Provision for Loan Losses (Credit) Balance at 6/30/17  (in thousands)  Commercial and industrial $ 1,527 $ — $ 4 $ 13 $ 1,544  Commercial mortgages:  Multifamily 5,806 — — 115 5,921  Other 4,303 — — 371 4,674  Owner-occupied 998 — — 687 1,685  Residential mortgages:  Closed end 16,758 — 1 276 17,035  Revolving home equity 1,339 — — (136) 1,203  Consumer and other 112 6 1 (33) 74  $ 30,843 $ 6 $ 6 $ 1,293 $ 32,136      Balance at 1/1/16 Chargeoffs Recoveries Provision for Loan Losses (Credit) Balance at 6/30/16  (in thousands)  Commercial and industrial $ 928 $ — $ 4 $ 242 $ 1,174  Commercial mortgages:  Multifamily 6,858 — — (512) 6,346  Other 3,674 — — 154 3,828  Owner-occupied 1,047 — — 128 1,175  Residential mortgages:  Closed end 13,639 — 8 501 14,148  Revolving home equity 1,016 — 12 (115) 913  Consumer and other 94 — 5 (6) 93  $ 27,256 $ — $ 29 $ 392 $ 27,677   Balance at 4/1/16 Chargeoffs Recoveries Provision for Loan Losses (Credit) Balance at 6/30/16  (in thousands)  Commercial and industrial $ 1,112 $ — $ — $ 62 $ 1,174  Commercial mortgages:  Multifamily 6,805 — — (459) 6,346  Other 3,853 — — (25) 3,828  Owner-occupied 1,093 — — 82 1,175  Residential mortgages:  Closed end 13,643 — — 505 14,148  Revolving home equity 927 — 9 (23) 913  Consumer and other 91 — 5 (3) 93  $ 27,524 $ — $ 14 $ 139 $ 27,677 
Impaired Loans	   Six Months Ended Three Months Ended  June 30, 2017 June 30, 2017 June 30, 2017  Unpaid Average Interest Average Interest  Recorded Principal Related Recorded Income Recorded Income  Investment Balance Allowance Investment Recognized Investment Recognized  (in thousands)  With no related allowance recorded:  Commercial and industrial $ 61 $ 61 $ — $ 81 $ 2 $ 63 $ —  Commercial mortgages - owner-occupied 545 628 — 549 11 547 7  Residential mortgages - closed end 257 350 — 266 — 261 —  With an allowance recorded:  Commercial and industrial 98 98 50 99 — 99 —  Commercial mortgages - owner-occupied 7,092 7,084 843 7,130 — 7,107 —  Residential mortgages:  Closed end 381 378 19 387 9 383 —  Revolving home equity 1,474 1,474 507 1,480 — 1,475 —  Total:  Commercial and industrial 159 159 50 180 2 162 —  Commercial mortgages - owner-occupied 7,637 7,712 843 7,679 11 7,654 7  Residential mortgages:  Closed end 638 728 19 653 9 644 —  Revolving home equity 1,474 1,474 507 1,480 — 1,475 —  $ 9,908 $ 10,073 $ 1,419 $ 9,992 $ 22 $ 9,935 $ 7       Six Months Ended Three Months Ended  December 31, 2016 June 30, 2016 June 30, 2016  Unpaid Average Interest Average Interest  Recorded Principal Related Recorded Income Recorded Income  Investment Balance Allowance Investment Recognized Investment Recognized  (in thousands)  With no related allowance recorded:  Commercial and industrial $ 131 $ 131 $ — $ — $ — $ — $ —  Commercial mortgages - owner-occupied 558 636 — 4,403 — 4,378 —  Residential mortgages:  Closed end 230 313 — 294 — 289 —  Revolving home equity 280 279 — 520 5 520 3  With an allowance recorded:  Residential mortgages:  Closed end 626 634 45 3,463 68 3,451 34  Revolving home equity 1,490 1,491 482 — — — —  Total:  Commercial and industrial 131 131 — — — — —  Commercial mortgages - owner-occupied 558 636 — 4,403 — 4,378 —  Residential mortgages:  Closed end 856 947 45 3,757 68 3,740 34  Revolving home equity 1,770 1,770 482 520 5 520 3  $ 3,315 $ 3,484 $ 527 $ 8,680 $ 73 $ 8,638 $ 37 
Aging Of The Recorded Investment In Loans	   June 30, 2017  Past Due Total Past  90 Days or Due Loans &  30-59 Days 60-89 Days More and Nonaccrual Nonaccrual Total  Past Due Past Due Still Accruing Loans Loans Current Loans  (in thousands)  Commercial and industrial $ 123 $ 106 $ — $ 159 $ 388 $ 123,403 $ 123,791  Commercial mortgages:  Multifamily — — — — — 607,173 607,173  Other — — — — — 416,183 416,183  Owner-occupied — — — 7,092 7,092 98,006 105,098  Residential mortgages:  Closed end 1,442 — — 257 1,699 1,425,856 1,427,555  Revolving home equity 2,915 — — 1,474 4,389 84,003 88,392  Consumer and other 2 — — — 2 5,862 5,864  $ 4,482 $ 106 $ — $ 8,982 $ 13,570 $ 2,760,486 $ 2,774,056   December 31, 2016  Commercial and industrial $ 224 $ — $ — $ — $ 224 $ 125,814 $ 126,038  Commercial mortgages:  Multifamily — — — — — 610,385 610,385  Other — — — — — 371,142 371,142  Owner-occupied — — 621 558 1,179 102,492 103,671  Residential mortgages:  Closed end 881 — — 230 1,111 1,237,320 1,238,431  Revolving home equity — — — 1,770 1,770 84,691 86,461  Consumer and other 1 — — — 1 9,292 9,293  $ 1,106 $ — $ 621 $ 2,558 $ 4,285 $ 2,541,136 $ 2,545,421 
Risk Ratings	The following tables present the recorded investment in commercial and industrial loans and commercial mortgage loans by class of loans and risk rating. Loans shown as Pass are all loans other than those risk rated Watch, Special Mention, Substandard or Doubtful.      June 30, 2017  Internally Assigned Risk Rating  Special  Pass Watch Mention Substandard Doubtful Total  (in thousands)  Commercial and industrial $ 122,588 $ 708 $ 336 $ 159 $ $ 123,791  Commercial mortgages:  Multifamily 597,595 2,381 7,197 — 607,173  Other 405,654 7,692 2,837 — 416,183  Owner-occupied 92,988 2,974 1,499 7,637 105,098  $ 1,218,825 $ 13,755 $ 11,869 $ 7,796 $ — $ 1,252,245   December 31, 2016  Commercial and industrial $ 125,097 $ 810 $ — $ 131 $ — $ 126,038  Commercial mortgages:  Multifamily 603,103 — 7,282 — — 610,385  Other 369,740 1,402 — — — 371,142  Owner-occupied 102,725 389 — 557 — 103,671  $ 1,200,665 $ 2,601 $ 7,282 $ 688 $ — $ 1,211,236  The following tables present the recorded investment in residential mortgage loans, home equity lines and other consumer loans by class of loans and risk rating. Loans shown as Pass are all loans other than those risk rated Watch, Special Mention, Substandard or Doubtful.      June 30, 2017  Internally Assigned Risk Rating  Special  Pass Watch Mention Substandard Doubtful Total  (in thousands)  Residential mortgages:  Closed end $ 1,424,616 $ 2,301 $ — $ 638 $ — $ 1,427,555  Revolving home equity 85,548 661 709 1,474 — 88,392  Consumer and other 5,462 — — — — 5,462  $ 1,515,626 $ 2,962 $ 709 $ 2,112 $ — $ 1,521,409   December 31, 2016  Residential mortgages:  Closed end $ 1,236,152 $ 982 $ 441 $ 856 $ — $ 1,238,431  Revolving home equity 84,189 — 501 1,771 — 86,461  Consumer and other 8,614 — — — — 8,614  $ 1,328,955 $ 982 $ 942 $ 2,627 $ — $ 1,333,506 

Stock-based Compensation (Table

Stock-based Compensation (Tables)	6 Months Ended
	Jun. 30, 2017
Stock-based Compensation [Abstract]
Stock Option Activity	   Weighted-  Weighted- Average Aggregate  Average Remaining Intrinsic  Number of Exercise Contractual Value  Options Price Term (yrs.) (in thousands)  Outstanding at January 1, 2017 257,262 $ 10.61  Exercised (60,697) 9.95  Forfeited or expired — —  Outstanding at June 30, 2017 196,565 $ 10.82 2.24 $ 3,495  Exercisable at June 30, 2017 196,115 $ 10.80 2.22 $ 3,491 
RSU Activity	   Weighted-  Weighted- Average Aggregate  Average Remaining Intrinsic  Number of Grant-Date Contractual Value  RSUs Fair Value Term (yrs.) (in thousands)  Outstanding at January 1, 2017 245,010 $ 16.52  Granted 93,579 26.25  Converted (65,205) 17.48  Forfeited — —  Outstanding at June 30, 2017 273,384 $ 19.62 1.42 $ 7,819  Vested and Convertible at June 30, 2017 — $ — — $ — 

Defined Benefit Pension Plan (T

Defined Benefit Pension Plan (Tables)	6 Months Ended
	Jun. 30, 2017
Defined Benefits Pension Plan [Abstract]
Net Pension Costs	   Six Months Ended Three Months Ended  June 30, June 30,  2017 2016 2017 2016  (in thousands)  Service cost plus expected expenses and net of  expected plan participant contributions $ 607 $ 572 $ 303 $ 286  Interest cost 795 792 397 396  Expected return on plan assets (1,470) (1,477) (734) (738)  Amortization of net actuarial loss 9 122 4 61  Net pension cost (credit) $ (59) $ 9 $ (30) $ 5 

Fair Value Of Financial Instr23

Fair Value Of Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2017
Fair Value Of Financial Instruments [Abstract]
Assets Measured On Recurring Basis	   Fair Value Measurements Using:  Quoted Prices Significant  in Active Other Significant  Markets for Observable Unobservable  Identical Assets Inputs Inputs  Total (Level 1) (Level 2) (Level 3)  (in thousands)  June 30, 2017:  Available-for-Sale Securities:  State and municipals $ 454,844 $ — $ 454,844 $ —  Pass-through mortgage securities 156,717 — 156,717 —  Collateralized mortgage obligations 128,012 — 128,012 —  $ 739,573 $ — $ 739,573 $ —   December 31, 2016:  Available-for-Sale Securities:  State and municipals $ 450,660 $ — $ 450,660 $ —  Pass-through mortgage securities 185,809 — 185,809 —  Collateralized mortgage obligations 178,830 — 178,830 —  $ 815,299 $ — $ 815,299 $ — 
Assets Measured On Non-recurring Basis	   Fair Value Measurements Using:  Quoted Prices Significant  in Active Other Significant  Markets for Observable Unobservable  Identical Assets Inputs Inputs  Total (Level 1) (Level 2) (Level 3)  (in thousands)  June 30, 2017:  Impaired loan:  Residential mortgage - revolving home equity $ 967 $ — $ — $ 967  Commercial mortgage - owner occupied 6,249 — — 6,249  $ 7,216 $ — $ — $ 7,216  December 31, 2016:  Impaired loan:  Residential mortgage - revolving home equity $ 1,009 $ — $ — $ 1,009 
Financial Instruments	   Level of June 30, 2017 December 31, 2016  Fair Value Carrying Carrying  Hierarchy Amount Fair Value Amount Fair Value  (in thousands)  Financial Assets:  Cash and cash equivalents Level 1 $ 56,710 $ 56,710 $ 36,929 $ 36,929  Held-to-maturity securities Level 2 7,203 7,374 9,904 10,154  Held-to-maturity securities Level 3 1,998 1,998 1,483 1,483  Loans Level 3 2,734,704 2,689,690 2,514,355 2,472,849  Restricted stock Level 1 30,530 30,530 31,763 31,763  Accrued interest receivable:  Investment securities Level 2 4,233 4,233 4,564 4,564  Loans Level 3 6,949 6,949 6,418 6,418  Financial Liabilities:  Checking deposits Level 1 850,316 850,316 808,311 808,311  Savings, NOW and money market deposits Level 1 1,647,281 1,647,281 1,519,749 1,519,749  Time deposits Level 2 318,011 320,608 280,657 282,024  Short-term borrowings Level 1 136,017 136,017 207,012 207,012  Long-term debt Level 2 412,362 411,069 379,212 375,003  Accrued interest payable:  Checking, savings, NOW and money  market deposits Level 1 124 124 160 160  Time deposits Level 2 34 34 25 25  Short-term borrowings Level 1 4 4 8 8  Long-term debt Level 2 629 629 590 590 

Basis of Presentation (Narrativ

Basis of Presentation (Narrative) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2017USD ($)item	Jun. 30, 2016USD ($)	Jun. 30, 2017USD ($)item	Jun. 30, 2016USD ($)
Income tax expense (benefit)	$ 2,581,000	$ 2,264,000	$ 5,478,000	$ 4,400,000
Bank [Member]
Number of subsidiaries | item	2		2
Accounting Standards Update 2016-09 [Member]
Income tax expense (benefit)	$ (312,000)	$ (109,000)	$ (597,000)	$ (314,000)

Earnings Per Share (Calculation

Earnings Per Share (Calculation Of Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share [Abstract]
Net income		$ 9,133	$ 7,729	$ 18,214	$ 15,364
Income allocated to participating securities	[1]	34	33	68	65
Income allocated to common stockholders		$ 9,099	$ 7,696	$ 18,146	$ 15,299
Common shares		24,091,447	22,529,255	23,975,687	21,902,417
Dilutive stock options and restricted stock units	[1]	249,901	257,975	257,063	266,330
Total		24,341,348	22,787,230	24,232,750	22,168,747
Basic		$ 0.38	$ 0.34	$ 0.76	$ 0.70
Diluted		$ 0.37	$ 0.34	$ 0.75	$ 0.69
[1]	Restricted stock units ("RSUs") awarded in 2016 accrue dividends at the same rate as the dividends declared by the Board of Directors on the Corporation's common stock. For purposes of computing EPS, these RSUs are considered to participate with common stock in the earnings of the Corporation and, therefore, the Corporation is required to calculate basic and diluted EPS using the two-class method. Under the two-class method, net income for the period is allocated between common stockholders and participating securities according to dividends declared and participation rights in undistributed earnings.

Comprehensive Income (Component

Comprehensive Income (Components Of Other Comprehensive Income And Related Tax Effects) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Change in net unrealized holding gains on available-for-sale securities:
Change arising during the period		$ 4,280	$ 7,338	$ 5,408	$ 12,480
Reclassification adjustment for gains included in net income	[1]		(1,827)	(57)	(1,827)
Change in net unrealized holding gains on available-for-sale securities		4,280	5,511	5,351	10,653
Tax effect		1,796	2,310	2,246	4,608
Total		2,484	3,201	3,105	6,045
Change in funded status of pension plan:
Amortization of net actuarial loss included in pension expense	[2]	4	61	9	122
Tax effect		2	25	4	(1)
Total		2	36	5	123
Other comprehensive income		$ 2,486	$ 3,237	$ 3,110	$ 6,168
[1]	Reclassification adjustment represents net realized gains arising from the sale of available-for-sale securities. The net realized gains are included in the consolidated statements of income in the line item, "Net gains on sales of securities." See "Note 4 - Investment Securities" for the income tax expense related to the net realized gains, which is included in the consolidated statements of income in the line item, "Income tax expense."
[2]	Represents the amortization into expense of net actuarial loss relating to the Corporation's defined benefit pension plan. This item is included in net periodic pension cost (see Note 7) and in the consolidated statements of income in the line item, "Employee benefits." The related income tax expense is included in the consolidated statements of income in the line item, "Income tax expense."

Comprehensive Income (Compone27

Comprehensive Income (Components Of Accumulated Other Comprehensive Loss, Net Of Tax) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			$ 305,830	$ 250,936
Current Period Change	$ 2,486	$ 3,237	3,110	6,168
Balance	330,275	305,652	330,275	305,652
Unrealized Holding Gains On Available-For-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			1,654
Current Period Change			3,105
Balance	4,759		4,759
Unrealized Actuarial Losses On Pension Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			(3,258)
Current Period Change			5
Balance	(3,253)		(3,253)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			(1,604)	7,524
Current Period Change			3,110	6,168
Balance	$ 1,506	$ 13,692	$ 1,506	$ 13,692

Investment Securities (Narrativ

Investment Securities (Narrative) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2017USD ($)itemsecurity	Jun. 30, 2016USD ($)security	Jun. 30, 2017USD ($)item	Jun. 30, 2016USD ($)	Dec. 31, 2016USD ($)item
Investment Securities [Line Items]
Marketable securities	$ 748,774,000		$ 748,774,000		$ 826,686,000
Income tax expense related to net realized gains		$ 761,000	24,000	$ 761,000
Municipal Security [Member]
Investment Securities [Line Items]
Held-to-maturity securities, Number of sales | security	1
Held-to-maturity securities, carrying value	$ 354,000		$ 354,000
Held-to-maturity securities, realized gain	$ 1,000
Mortgage-Backed Securities [Member]
Investment Securities [Line Items]
Held-to-maturity securities, Number of sales | security		1
Percent of amount collected		85.00%
Held-to-maturity securities, carrying value		$ 106,000		$ 106,000
Held-to-maturity securities, realized gain		$ 17,000
Excludes U.S. Government And Its Agencies [Member]
Investment Securities [Line Items]
Number of holdings greater than 10 percent of stockholders equity | item	0		0		0
Securities Pledged As Collateral [Member]
Investment Securities [Line Items]
Marketable securities	$ 453,295,000		$ 453,295,000		$ 415,419,000

Investment Securities (Amortiza

Investment Securities (Amortization Cost And Estimated Fair Value Of Investment Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule Of Amortized Cost And Estimated Fair Values [Line Items]
Held-to-maturity securities, Amortized Cost	$ 9,201	$ 11,387
Held-to-maturity securities, Gross Unrealized Gains	171	250
Held-to-maturity securities	9,372	11,637
Available-for-sale securities, Amortized Cost	731,597	812,674
Available-for-sale securities, Gross Unrealized Gains	13,100	11,155
Available-for-sale securities, Gross Unrealized Losses	(5,124)	(8,530)
Available-for-sale, at fair value	739,573	815,299
State And Municipals [Member]
Schedule Of Amortized Cost And Estimated Fair Values [Line Items]
Held-to-maturity securities, Amortized Cost	8,362	10,419
Held-to-maturity securities, Gross Unrealized Gains	117	177
Held-to-maturity securities	8,479	10,596
Available-for-sale securities, Amortized Cost	443,586	444,154
Available-for-sale securities, Gross Unrealized Gains	12,735	10,137
Available-for-sale securities, Gross Unrealized Losses	(1,477)	(3,631)
Available-for-sale, at fair value	454,844	450,660
Pass-Through Mortgage Securities [Member]
Schedule Of Amortized Cost And Estimated Fair Values [Line Items]
Held-to-maturity securities, Amortized Cost	334	361
Held-to-maturity securities, Gross Unrealized Gains	28	33
Held-to-maturity securities	362	394
Available-for-sale securities, Amortized Cost	158,948	188,527
Available-for-sale securities, Gross Unrealized Gains	116	156
Available-for-sale securities, Gross Unrealized Losses	(2,347)	(2,874)
Available-for-sale, at fair value	156,717	185,809
Collateralized Mortgage Obligations [Member]
Schedule Of Amortized Cost And Estimated Fair Values [Line Items]
Held-to-maturity securities, Amortized Cost	505	607
Held-to-maturity securities, Gross Unrealized Gains	26	40
Held-to-maturity securities	531	647
Available-for-sale securities, Amortized Cost	129,063	179,993
Available-for-sale securities, Gross Unrealized Gains	249	862
Available-for-sale securities, Gross Unrealized Losses	(1,300)	(2,025)
Available-for-sale, at fair value	$ 128,012	$ 178,830

Investment Securities (Securiti

Investment Securities (Securities With A Continuous Unrealized Losses Position) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	$ 294,141	$ 417,605
Less than 12 months, Unrealized Loss	(4,791)	(8,325)
12 months or more, Fair Value	16,300	7,737
12 months or more, Unrealized Loss	(333)	(205)
Total, Fair Value	310,441	425,342
Total, Unrealized Loss	(5,124)	(8,530)
State And Municipals [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	58,324	117,181
Less than 12 months, Unrealized Loss	(1,465)	(3,631)
12 months or more, Fair Value	1,455
12 months or more, Unrealized Loss	(12)
Total, Fair Value	59,779	117,181
Total, Unrealized Loss	(1,477)	(3,631)
Pass-Through Mortgage Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	136,804	175,000
Less than 12 months, Unrealized Loss	(2,200)	(2,874)
12 months or more, Fair Value	8,225
12 months or more, Unrealized Loss	(147)
Total, Fair Value	145,029	175,000
Total, Unrealized Loss	(2,347)	(2,874)
Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	99,013	125,424
Less than 12 months, Unrealized Loss	(1,126)	(1,820)
12 months or more, Fair Value	6,620	7,737
12 months or more, Unrealized Loss	(174)	(205)
Total, Fair Value	105,633	133,161
Total, Unrealized Loss	$ (1,300)	$ (2,025)

Investment Securities (Sales Of

Investment Securities (Sales Of Available-For-Sale Securities) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Investments Securities [Abstract]
Proceeds	$ 40,989	$ 40,011	$ 40,989
Gross gains	1,845	366	1,845
Gross losses	(18)	(309)	(18)
Net gain	$ 1,827	$ 57	$ 1,827

Investment Securities (Maturiti

Investment Securities (Maturities) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Held-to-Maturity Securities:
Held-to-maturity securities, Amortized Cost, Within one year	$ 3,702
Held-to-maturity securities, Fair Value, Within one year	3,719
Held-to-maturity securities, Amortized Cost, After 1 through 5 years	4,126
Held-to-maturity securities, Fair Value, After 1 through 5 years	4,224
Held-to-maturity securities, Amortized Cost, After 5 through 10 years	534
Held-to-maturity securities, Fair Value, After 5 through 10 years	536
Held-to-maturity securities, Amortized Cost, Mortgage-backed securities	839
Held-to-maturity securities, Fair Value, Mortgage-backed securities	893
Held-to-maturity securities, Amortized Cost	9,201	$ 11,387
Held-to-maturity securities, Fair Value	9,372	11,637
Available-for-Sale Securities:
Available-for-sale securities, Amortized Cost, Within one year	16,912
Available-for-sale securities, Fair Value, Within one year	17,172
Available-for-sale securities, Amortized Cost, After 1 through 5 years	79,797
Available-for-sale securities, Fair Value, After 1 through 5 years	82,739
Available-for-sale securities, Amortized Cost, After 5 through 10 years	172,873
Available-for-sale securities, Fair Value, After 5 through 10 years	177,968
Available-for-sale securities, Amortized Cost, After 10 years	174,004
Available-for-sale securities, Fair Value, After 10 years	176,965
Available-for-sale securities, Amortized Cost, Mortgage-backed securities	288,011
Available-for-sale securities, Fair Value, Mortgage-backed securities	284,729
Available-for-sale securities, Amortized Cost	731,597
Available-for-sale securities, Fair Value	$ 739,573	$ 815,299

Loans (Narrative) (Details)

Loans (Narrative) (Details)	6 Months Ended
	Jun. 30, 2017USD ($)contract	Jun. 30, 2016contract	Dec. 31, 2016USD ($)
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loans modified | contract	0	0
Allowance for loan losses, TDR	$ 19,000		$ 45,000
Number of days past due to be considered default	90 days
Minimum prior year principal balance of commercial Real estate loans required to be reviewed annually	60.00%
Deposit Liabilities Reclassified as Loans Receivable	$ 402,000		679,000
Mortgage loans in the process of foreclosure	$ 0		0
Number of contracts with payment default | contract	0	0
Commitments to lend additional amounts	$ 0		0
Residential Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Real estate acquired through foreclosure	$ 0		$ 0

Loans (Loans Individually And C

Loans (Loans Individually And Collectively Evaluated For Impairment) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment - Loans	$ 9,908		$ 3,315
Collectively evaluated for impairment - Loans	2,764,148		2,542,106
Total Loans	2,774,056		2,545,421
Individually evaluated for impairment - Allowance for Loan Losses	1,419		527
Collectively evaluated for impairment - Allowance for Loan Losses	30,717		29,530
Ending balance, allowance	32,136	$ 30,843	30,057	$ 27,677	$ 27,524	$ 27,256
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment - Loans	159		131
Collectively evaluated for impairment - Loans	123,632		125,907
Total Loans	123,791		126,038
Individually evaluated for impairment - Allowance for Loan Losses	50
Collectively evaluated for impairment - Allowance for Loan Losses	1,494		1,408
Ending balance, allowance	1,544	1,527	1,408	1,174	1,112	928
Commercial Mortgages [Member] | Multifamily Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment - Loans	607,173		610,385
Total Loans	607,173		610,385
Collectively evaluated for impairment - Allowance for Loan Losses	5,921		6,119
Ending balance, allowance	5,921	5,806	6,119	6,346	6,805	6,858
Commercial Mortgages [Member] | Other Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment - Loans	416,183		371,142
Total Loans	416,183		371,142
Collectively evaluated for impairment - Allowance for Loan Losses	4,674		4,296
Ending balance, allowance	4,674	4,303	4,296	3,828	3,853	3,674
Commercial Mortgages [Member] | Owner-occupied Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment - Loans	7,637		558
Collectively evaluated for impairment - Loans	97,461		103,113
Total Loans	105,098		103,671
Individually evaluated for impairment - Allowance for Loan Losses	843
Collectively evaluated for impairment - Allowance for Loan Losses	842		959
Ending balance, allowance	1,685	998	959	1,175	1,093	1,047
Residential Mortgages [Member] | Closed End Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment - Loans	638		856
Collectively evaluated for impairment - Loans	1,426,917		1,237,575
Total Loans	1,427,555		1,238,431
Individually evaluated for impairment - Allowance for Loan Losses	19		45
Collectively evaluated for impairment - Allowance for Loan Losses	17,016		15,695
Ending balance, allowance	17,035	16,758	15,740	14,148	13,643	13,639
Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment - Loans	1,474		1,770
Collectively evaluated for impairment - Loans	86,918		84,691
Total Loans	88,392		86,461
Individually evaluated for impairment - Allowance for Loan Losses	507		482
Collectively evaluated for impairment - Allowance for Loan Losses	696		919
Ending balance, allowance	1,203	1,339	1,401	913	927	1,016
Consumer And Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment - Loans	5,864		9,293
Total Loans	5,864		9,293
Collectively evaluated for impairment - Allowance for Loan Losses	74		134
Ending balance, allowance	$ 74	$ 112	$ 134	$ 93	$ 91	$ 94

Loans (Allowance For Loan Losse

Loans (Allowance For Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	$ 30,843	$ 27,524	$ 30,057	$ 27,256
Chargeoffs	6		12
Recoveries	6	14	10	29
Provision for loan losses	1,293	139	2,081	392
Allowance for loan losses, ending balance	32,136	27,677	32,136	27,677
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	1,527	1,112	1,408	928
Chargeoffs			6
Recoveries	4		7	4
Provision for loan losses	13	62	135	242
Allowance for loan losses, ending balance	1,544	1,174	1,544	1,174
Commercial Mortgages [Member] | Multifamily Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	5,806	6,805	6,119	6,858
Provision for loan losses	115	(459)	(198)	(512)
Allowance for loan losses, ending balance	5,921	6,346	5,921	6,346
Commercial Mortgages [Member] | Other Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	4,303	3,853	4,296	3,674
Provision for loan losses	371	(25)	378	154
Allowance for loan losses, ending balance	4,674	3,828	4,674	3,828
Commercial Mortgages [Member] | Owner-occupied Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	998	1,093	959	1,047
Provision for loan losses	687	82	726	128
Allowance for loan losses, ending balance	1,685	1,175	1,685	1,175
Residential Mortgages [Member] | Closed End Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	16,758	13,643	15,740	13,639
Recoveries	1		2	8
Provision for loan losses	276	505	1,293	501
Allowance for loan losses, ending balance	17,035	14,148	17,035	14,148
Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	1,339	927	1,401	1,016
Recoveries		9		12
Provision for loan losses	(136)	(23)	(198)	(115)
Allowance for loan losses, ending balance	1,203	913	1,203	913
Consumer And Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	112	91	134	94
Chargeoffs	6		6
Recoveries	1	5	1	5
Provision for loan losses	(33)	(3)	(55)	(6)
Allowance for loan losses, ending balance	$ 74	$ 93	$ 74	$ 93

Loans (Impaired Loans) (Details

Loans (Impaired Loans) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Total related allowance	$ 1,419		$ 1,419		$ 527
Total, recorded investment	9,908		9,908		3,315
Total, unpaid principal balance	10,073		10,073		3,484
Total, average recorded investment	9,935	$ 8,638	9,992	$ 8,680
Total, interest income recognized	7	37	22	73
Commercial And Industrial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no allowance recorded	61		61		131
Unpaid principal balance with no allowance recorded	61		61		131
Total related allowance	50		50
Average recorded investment with no allowance recorded	63		81
Interest income recognized with no allowance recorded			2
Recorded investment with an allowance recorded	98		98
Unpaid principal balance with an allowance recorded	98		98
Average recorded investment with an allowance recorded	99		99
Total, recorded investment	159		159		131
Total, unpaid principal balance	159		159		131
Total, average recorded investment	162		180
Total, interest income recognized			2
Commercial Mortgages [Member] | Owner-occupied Loan [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no allowance recorded	545		545		558
Unpaid principal balance with no allowance recorded	628		628		636
Total related allowance	843		843
Average recorded investment with no allowance recorded	547	4,378	549	4,403
Interest income recognized with no allowance recorded	7		11
Recorded investment with an allowance recorded	7,092		7,092
Unpaid principal balance with an allowance recorded	7,084		7,084
Average recorded investment with an allowance recorded	7,107		7,130
Total, recorded investment	7,637		7,637		558
Total, unpaid principal balance	7,712		7,712		636
Total, average recorded investment	7,654	4,378	7,679	4,403
Total, interest income recognized	7		11
Residential Mortgages [Member] | Closed End Loan [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no allowance recorded	257		257		230
Unpaid principal balance with no allowance recorded	350		350		313
Total related allowance	19		19		45
Average recorded investment with no allowance recorded	261	289	266	294
Recorded investment with an allowance recorded	381		381		626
Unpaid principal balance with an allowance recorded	378		378		634
Average recorded investment with an allowance recorded	383	3,451	387	3,463
Interest income recognized with an allowance recorded		34	9	68
Total, recorded investment	638		638		856
Total, unpaid principal balance	728		728		947
Total, average recorded investment	644	3,740	653	3,757
Total, interest income recognized		34	9	68
Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no allowance recorded					280
Unpaid principal balance with no allowance recorded					279
Total related allowance	507		507		482
Average recorded investment with no allowance recorded		520		520
Interest income recognized with no allowance recorded		3		5
Recorded investment with an allowance recorded	1,474		1,474		1,490
Unpaid principal balance with an allowance recorded	1,474		1,474		1,491
Average recorded investment with an allowance recorded	1,475		1,480
Total, recorded investment	1,474		1,474		1,770
Total, unpaid principal balance	1,474		1,474		$ 1,770
Total, average recorded investment	$ 1,475	520	$ 1,480	520
Total, interest income recognized		$ 3		$ 5

Loans (Aging Of The Recorded In

Loans (Aging Of The Recorded Investment In Loans) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	$ 8,982	$ 2,558
Total past due loan & nonaccrual loans	13,570	4,285
Current	2,760,486	2,541,136
Loans	2,774,056	2,545,421
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	159
Total past due loan & nonaccrual loans	388	224
Current	123,403	125,814
Loans	123,791	126,038
Commercial Mortgages [Member] | Multifamily Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	607,173	610,385
Loans	607,173	610,385
Commercial Mortgages [Member] | Other Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	416,183	371,142
Loans	416,183	371,142
Commercial Mortgages [Member] | Owner-occupied Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	7,092	558
Total past due loan & nonaccrual loans	7,092	1,179
Current	98,006	102,492
Loans	105,098	103,671
Residential Mortgages [Member] | Closed End Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	257	230
Total past due loan & nonaccrual loans	1,699	1,111
Current	1,425,856	1,237,320
Loans	1,427,555	1,238,431
Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	1,474	1,770
Total past due loan & nonaccrual loans	4,389	1,770
Current	84,003	84,691
Loans	88,392	86,461
Consumer And Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due loan & nonaccrual loans	2	1
Current	5,862	9,292
Loans	5,864	9,293
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	4,482	1,106
30 to 59 Days Past Due [Member] | Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	123	224
30 to 59 Days Past Due [Member] | Residential Mortgages [Member] | Closed End Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	1,442	881
30 to 59 Days Past Due [Member] | Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	2,915
30 to 59 Days Past Due [Member] | Consumer And Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	2	1
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	106
60 to 89 Days Past Due [Member] | Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	$ 106
Past Due 90 Days Or More And Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due		621
Past Due 90 Days Or More And Still Accruing [Member] | Commercial Mortgages [Member] | Owner-occupied Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due		$ 621

Loans (Risk Ratings) (Details)

Loans (Risk Ratings) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 2,774,056	$ 2,545,421
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	123,791	126,038
Commercial And Industrial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	122,588	125,097
Commercial And Industrial [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	708	810
Commercial And Industrial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	336
Commercial And Industrial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	159	131
Commercial And Industrial [Member] | Internal Investment Grade [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	123,791	126,038
Residential Mortgages [Member] | Closed End Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,427,555	1,238,431
Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	88,392	86,461
Residential Mortgages [Member] | Pass [Member] | Closed End Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,424,616	1,236,152
Residential Mortgages [Member] | Pass [Member] | Revolving Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	85,548	84,189
Residential Mortgages [Member] | Watch [Member] | Closed End Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,301	982
Residential Mortgages [Member] | Watch [Member] | Revolving Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	661
Residential Mortgages [Member] | Special Mention [Member] | Closed End Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans		441
Residential Mortgages [Member] | Special Mention [Member] | Revolving Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	709	501
Residential Mortgages [Member] | Substandard [Member] | Closed End Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	638	856
Residential Mortgages [Member] | Substandard [Member] | Revolving Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,474	1,771
Residential Mortgages [Member] | Internal Investment Grade [Member] | Closed End Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,427,555	1,238,431
Residential Mortgages [Member] | Internal Investment Grade [Member] | Revolving Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	88,392	86,461
Commercial Mortgages [Member] | Multifamily Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	607,173	610,385
Commercial Mortgages [Member] | Other Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	416,183	371,142
Commercial Mortgages [Member] | Owner-occupied Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	105,098	103,671
Commercial Mortgages [Member] | Pass [Member] | Multifamily Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	597,595	603,103
Commercial Mortgages [Member] | Pass [Member] | Other Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	405,654	369,740
Commercial Mortgages [Member] | Pass [Member] | Owner-occupied Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	92,988	102,725
Commercial Mortgages [Member] | Watch [Member] | Multifamily Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,381
Commercial Mortgages [Member] | Watch [Member] | Other Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	7,692	1,402
Commercial Mortgages [Member] | Watch [Member] | Owner-occupied Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,974	389
Commercial Mortgages [Member] | Special Mention [Member] | Multifamily Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	7,197	7,282
Commercial Mortgages [Member] | Special Mention [Member] | Other Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,837
Commercial Mortgages [Member] | Special Mention [Member] | Owner-occupied Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,499
Commercial Mortgages [Member] | Substandard [Member] | Owner-occupied Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	7,637	557
Commercial Mortgages [Member] | Internal Investment Grade [Member] | Multifamily Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	607,173	610,385
Commercial Mortgages [Member] | Internal Investment Grade [Member] | Other Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	416,183	371,142
Commercial Mortgages [Member] | Internal Investment Grade [Member] | Owner-occupied Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	105,098	103,671
Consumer And Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	5,864	9,293
Consumer And Other [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	5,462	8,614
Consumer And Other [Member] | Internal Investment Grade [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	5,462	8,614
Residential Mortgages, Home Equity Lines, And Other Consumer Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,515,626	1,328,955
Residential Mortgages, Home Equity Lines, And Other Consumer Loans [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,962	982
Residential Mortgages, Home Equity Lines, And Other Consumer Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	709	942
Residential Mortgages, Home Equity Lines, And Other Consumer Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,112	2,627
Residential Mortgages, Home Equity Lines, And Other Consumer Loans [Member] | Internal Investment Grade [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,521,409	1,333,506
Commercial And Industrial Loans And Commercial Real Estate Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,218,825	1,200,665
Commercial And Industrial Loans And Commercial Real Estate Loans [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	13,755	2,601
Commercial And Industrial Loans And Commercial Real Estate Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	11,869	7,282
Commercial And Industrial Loans And Commercial Real Estate Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	7,796	688
Commercial And Industrial Loans And Commercial Real Estate Loans [Member] | Internal Investment Grade [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 1,252,245	$ 1,211,236

Stock-based Compensation (Narra

Stock-based Compensation (Narrative) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Apr. 22, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense for share-based payments	$ 1,331,000	$ 914,000
Income tax benefits	559,000	383,000
Intrinsic value	1,062,000	421,000
Unrecognized compensation cost	$ 2,491,000
Weighted average period expected to be recognized	1 year 1 month 6 days
Proceeds from exercise of stock options	$ 604,000	470,000
Tax benefit from stock option exercised	$ 445,000	162,000
Board Of Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued for services	976
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of grants	93,579
Total intrinsic value of RSUs converted	$ 1,779,000	1,445,000
Unrecognized compensation cost	$ 2,488,000
Weighted average period expected to be recognized	1 year 1 month 6 days
Performance-Based RSUs [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Conversion rate of RSUs to common stock	1.25
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 3,000
Weighted average period expected to be recognized	2 years 10 months 24 days
Cash used to settle stock options	$ 0	$ 0
Equity Incentive Plan 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	2,250,000
Number of shares available for issuance	1,935,653
Equity Incentive Plan 2014 [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance	455,199
Number of grants	93,579
Equity Incentive Plan 2014 [Member] | Restricted Stock Units (RSUs) [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	787,500
Equity Incentive Plan 2014 [Member] | Restricted Stock Units (RSUs) [Member] | Equal Installment Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of grants	31,696
Equity Incentive Plan 2014 [Member] | Restricted Stock Units (RSUs) [Member] | Share-based Compensation Award, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	1 year
Equity Incentive Plan 2014 [Member] | Restricted Stock Units (RSUs) [Member] | Share-based Compensation Award, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	2 years
Equity Incentive Plan 2014 [Member] | Restricted Stock Units (RSUs) [Member] | Share-based Compensation Award, Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Equity Incentive Plan 2014 [Member] | Restricted Stock Units (RSUs) [Member] | Service-based Vesting, Three Year [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of grants	300
Award vesting period	3 years
Equity Incentive Plan 2014 [Member] | Restricted Stock Units (RSUs) [Member] | Service-based Vesting, Four Year Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of grants	2,500
Award vesting period	4 years
Equity Incentive Plan 2014 [Member] | Performance-Based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of grants	59,083
Compensation Plan 2006 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized			0
Compensation Plan 2006 [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum exercise price percentage	100.00%

Stock Based Compensation (Stock

Stock Based Compensation (Stock Option Activity) (Details) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2017USD ($)$ / sharesshares
Stock-based Compensation [Abstract]
Outstanding, Number of Options | shares	257,262
Outstanding, Weighted-Average Exercise Price | $ / shares	$ 10.61
Exercised, Number of Options | shares	(60,697)
Exercised, Weighted-Average Exercise Price | $ / shares	$ 9.95
Outstanding, Number of Options | shares	196,565
Outstanding, Weighted-Average Exercise Price | $ / shares	$ 10.82
Outstanding, Weighted-Average Remaining Contractual Term	2 years 2 months 27 days
Outstanding, Aggregate Intrinsic Value | $	$ 3,495
Exercisable, Number of Options | shares	196,115
Exercisable, Weighted-Average Exercise Price | $ / shares	$ 10.80
Exercisable, Weighted-Average Remaining Contractual Term	2 years 2 months 19 days
Exercisable, Aggregate Intrinsic Value | $	$ 3,491

Stock Based Compensation (RSU A

Stock Based Compensation (RSU Activity) (Details) - Restricted Stock Units (RSUs) [Member] $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2017USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, Number of RSUs (in shares) | shares	245,010
Outstanding, Weighted-Average Grant-Date Fair Value, RSUs (in dollars per share) | $ / shares	$ 16.52
Granted, Number of RSUs (in shares) | shares	93,579
Granted, Weighted-Average Grant-Date Fair Value, RSUs (in dollars per share) | $ / shares	$ 26.25
Converted, Number of RSUs (in shares) | shares	(65,205)
Converted, Weighted-Average Grant-Date Fair Value, RSUs (in dollars per share) | $ / shares	$ 17.48
Outstanding, Number of RSUs (in shares) | shares	273,384
Outstanding, Weighted-Average Grant-Date Fair Value, RSUs (in dollars per share) | $ / shares	$ 19.62
Outstanding, Weighted Average Remaining Contractual Term (yr.)	1 year 5 months 1 day
Outstanding, Aggregate Intrinsic Value, RSUs (in shares) | $	$ 7,819

Defined Benefit Pension Plan (N

Defined Benefit Pension Plan (Narrative) (Details)	1 Months Ended
	Sep. 30, 2017USD ($)
Scenario, Forecast [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension contribution	$ 0

Defined Benefit Pension Plan 43

Defined Benefit Pension Plan (Net Pension Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Defined Benefits Pension Plan [Abstract]
Service cost plus expected expenses and net of expected plan participant contributions	$ 303	$ 286	$ 607	$ 572
Interest cost	397	396	795	792
Expected return on plan assets	(734)	(738)	(1,470)	(1,477)
Amortization of net actuarial loss	4	61	9	122
Net pension cost (credit)	$ (30)	$ 5	$ (59)	$ 9

Fair Value Of Financial Instr44

Fair Value Of Financial Instruments (Narrative) (Details)	6 Months Ended
	Jun. 30, 2017USD ($)segment	Jun. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value, Transfers between levels	$ 0	$ 0
Unpaid principal balance	10,073,000		$ 3,484,000
Valuation allowance	1,419,000		527,000
Provisions for loan losses	$ 868,000	$ (9,000)
Number of loan portfolio segments | segment	3
Term of Maturity for Short-term Borrowings	90 days
Loans	$ 2,774,056,000		2,545,421,000
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unpaid principal balance	8,566,000		1,491,000
Valuation allowance	$ 1,350,000		$ 482,000

Fair Value Of Financial Instr45

Fair Value Of Financial Instruments (Assets Measured On Recurring Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	$ 739,573	$ 815,299
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	739,573	815,299
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	739,573	815,299
State And Municipals [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	454,844	450,660
State And Municipals [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	454,844	450,660
State And Municipals [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	454,844	450,660
Pass-Through Mortgage Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	156,717	185,809
Pass-Through Mortgage Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	156,717	185,809
Pass-Through Mortgage Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	156,717	185,809
Collateralized Mortgage Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	128,012	178,830
Collateralized Mortgage Obligations [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	128,012	178,830
Collateralized Mortgage Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	$ 128,012	$ 178,830

Fair Value Of Financial Instr46

Fair Value Of Financial Instruments (Assets Measured On Non-recurring Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loan	$ 9,908	$ 3,315
Residential Mortgages [Member] | Revolving Home Equity [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loan	1,474	1,770
Commercial Mortgages [Member] | Owner-occupied Loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loan	7,637	558
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loan	7,216
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loan	7,216
Fair Value, Measurements, Nonrecurring [Member] | Residential Mortgages [Member] | Revolving Home Equity [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loan	967	1,009
Fair Value, Measurements, Nonrecurring [Member] | Residential Mortgages [Member] | Revolving Home Equity [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loan	967	$ 1,009
Fair Value, Measurements, Nonrecurring [Member] | Commercial Mortgages [Member] | Owner-occupied Loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loan	6,249
Fair Value, Measurements, Nonrecurring [Member] | Commercial Mortgages [Member] | Owner-occupied Loan [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loan	$ 6,249

Fair Value Of Financial Instr47

Fair Value Of Financial Instruments (Financial Instruments) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Financial Assets:
Held-to-maturity securities	$ 9,372	$ 11,637
Restricted stock	30,530	31,763
Financial Liabilities:
Checking deposits	850,316	808,311
Savings, NOW and money market	1,647,281	1,519,749
Carrying Amount [Member] | Level 1 [Member]
Financial Assets:
Cash and cash equivalents	56,710	36,929
Restricted stock	30,530	31,763
Financial Liabilities:
Checking deposits	850,316	808,311
Savings, NOW and money market	1,647,281	1,519,749
Short-term borrowings	136,017	207,012
Accrued interest payable:
Checking, savings, NOW and money market deposits	124	160
Short-term borrowings	4	8
Carrying Amount [Member] | Level 2 [Member]
Financial Assets:
Held-to-maturity securities	7,203	9,904
Accrued interest receivable:
Investment securities	4,233	4,564
Financial Liabilities:
Time deposits	318,011	280,657
Long-term debt	412,362	379,212
Accrued interest payable:
Time deposits	34	25
Long-term debt	629	590
Carrying Amount [Member] | Level 3 [Member]
Financial Assets:
Held-to-maturity securities	1,998	1,483
Loans	2,734,704	2,514,355
Accrued interest receivable:
Loans	6,949	6,418
Fair Value [Member] | Level 1 [Member]
Financial Assets:
Cash and cash equivalents	56,710	36,929
Restricted stock	30,530	31,763
Financial Liabilities:
Checking deposits	850,316	808,311
Savings, NOW and money market	1,647,281	1,519,749
Short-term borrowings	136,017	207,012
Accrued interest payable:
Checking, savings, NOW and money market deposits	124	160
Short-term borrowings	4	8
Fair Value [Member] | Level 2 [Member]
Financial Assets:
Held-to-maturity securities	7,374	10,154
Accrued interest receivable:
Investment securities	4,233	4,564
Financial Liabilities:
Time deposits	320,608	282,024
Long-term debt	411,069	375,003
Accrued interest payable:
Time deposits	34	25
Long-term debt	629	590
Fair Value [Member] | Level 3 [Member]
Financial Assets:
Held-to-maturity securities	1,998	1,483
Loans	2,689,690	2,472,849
Accrued interest receivable:
Loans	$ 6,949	$ 6,418