The First of Long Island Corporation (FLIC) 10-Q 10 May 19 2019 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2019	May 03, 2019
Document And Entity Information
Entity Registrant Name	FIRST OF LONG ISLAND CORP
Entity Central Index Key	0000740663
Trading Symbol	flic
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding (in shares)		24,900,813
Document Type	10-Q
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Small Business	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Assets:
Cash and cash equivalents	$ 44,017	$ 47,358
Investment securities:
Held-to-maturity, at amortized cost (fair value of $5,172 and $5,552)	5,124	5,504
Available-for-sale, at fair value	749,921	758,015
Total securities	755,045	763,519
Loans:
Commercial and industrial	100,944	98,785
Secured by real estate:
Commercial mortgages	1,304,886	1,281,295
Residential mortgages	1,777,332	1,809,651
Home equity lines	66,049	67,710
Consumer and other	5,107	5,958
Total Loans	3,254,318	3,263,399
Allowance for loan losses	(30,199)	(30,838)
Total	3,224,119	3,232,561
Restricted stock, at cost	29,411	40,686
Bank premises and equipment, net	41,081	41,267
Right of use asset - operating leases	15,191
Bank-owned life insurance	81,460	80,925
Pension plan assets, net	15,141	15,154
Deferred income tax benefit	837	3,447
Other assets	16,374	16,143
Total assets	4,222,676	4,241,060
Deposits:
Checking	925,141	935,574
Savings, NOW and money market	1,699,996	1,590,341
Time, $100,000 and over	292,370	309,165
Time, other	389,702	249,892
Total	3,307,209	3,084,972
Short-term borrowings	135,176	388,923
Long-term debt	366,472	362,027
Operating lease liability	15,999
Accrued expenses and other liabilities	11,378	16,951
Total liabilities	3,836,234	3,852,873
Stockholders' Equity:
Common stock, par value $.10 per share: Authorized, 80,000,000 shares; Issued and outstanding, 24,900,347 and 25,422,740 shares	2,490	2,542
Surplus	132,018	145,163
Retained earnings	256,512	249,922
Total	391,020	397,627
Accumulated other comprehensive loss, net of tax	(4,578)	(9,440)
Total	386,442	388,187
Total	$ 4,222,676	$ 4,241,060

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Consolidated Balance Sheets [Abstract]
Held-to-Maturity Securities, Fair Value	$ 5,172	$ 5,552
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	80,000,000	80,000,000
Common stock, shares issued (in shares)	24,900,347	25,422,740
Common stock, shares outstanding (in shares)	24,900,347	25,422,740

Consolidated Statements Of Inco

Consolidated Statements Of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Interest and dividend income:
Loans	$ 29,416	$ 26,664
Taxable	4,045	2,209
Nontaxable	3,092	3,431
Total interest and dividend income	36,553	32,304
Interest expense:
Savings, NOW and money market deposits	4,000	2,540
Time deposits	3,398	1,708
Short-term borrowings	1,965	783
Long-term debt	1,780	2,117
Total interest expense	11,143	7,148
Net interest income	25,410	25,156
Provision (credit) for loan losses	(457)	1,512
Net interest income after provision (credit) for loan losses	25,867	23,644
Noninterest income:
Investment Management Division income	481	581
Service charges on deposit accounts	705	700
Other	1,258	2,011
Total	2,444	3,292
Noninterest expense:
Salaries and employee benefits	9,258	9,217
Occupancy and equipment	2,937	2,813
Other	2,940	2,838
Total noninterest expense	15,135	14,868
Income before income taxes	13,176	12,068
Income tax expense	2,335	957
Net income	$ 10,841	$ 11,111
Earnings per share:
Basic	$ 0.43	$ 0.44
Diluted	0.43	0.44
Cash dividends declared per share	$ 0.17	$ 0.15

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Consolidated Statements Of Comprehensive Income [Abstract]
Net income	$ 10,841	$ 11,111
Other comprehensive income (loss):
Change in net unrealized holding gains (losses) on available-for-sale securities	8,417	(11,734)
Change in funded status of pension plan	88
Change in net unrealized loss on derivative instruments	(1,545)
Other comprehensive income (loss) before income taxes	6,960	(11,734)
Income tax expense (benefit)	2,098	(3,548)
Other comprehensive income (loss)	4,862	(8,186)
Comprehensive income	$ 15,703	$ 2,925

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, 2017	24,668,390
Balance at Dec. 31, 2017	$ 2,467	$ 127,122	$ 224,315	$ 546	$ 354,450
Net income			11,111		11,111
Other comprehensive income (loss)				(8,186)	(8,186)
Reclassification of stranded tax effects upon the adoption of ASU 2018-02			277	(277)
Shares withheld upon the vesting and conversion of RSUs (in shares)	(25,321)
Shares withheld upon the vesting and conversion of RSUs	$ (3)	(719)			(722)
Common stock issued under stock compensation plans (in shares)	112,237
Common stock issued under stock compensation plans	$ 11	101			112
Common stock issued under dividend reinvestment and stock purchase plan (in shares)	269,361
Common stock issued under dividend reinvestment and stock purchase plan	$ 27	7,292			7,319
Stock-based compensation		1,128			1,128
Cash dividends declared			(3,766)		(3,766)
Balance (in shares) at Mar. 31, 2018	25,024,667
Balance at Mar. 31, 2018	$ 2,502	134,924	231,937	(7,917)	361,446
Balance (in shares) at Dec. 31, 2018	25,422,740
Balance at Dec. 31, 2018	$ 2,542	145,163	249,922	(9,440)	388,187
Net income			10,841		10,841
Other comprehensive income (loss)				4,862	4,862
Repurchase of common stock (in shares)	(674,800)
Repurchase of common stock	$ (67)	(15,264)			(15,331)
Shares withheld upon the vesting and conversion of RSUs (in shares)	(39,947)
Shares withheld upon the vesting and conversion of RSUs	$ (4)	(826)			(830)
Common stock issued under stock compensation plans (in shares)	122,456
Common stock issued under stock compensation plans	$ 12	223			235
Common stock issued under dividend reinvestment and stock purchase plan (in shares)	69,898
Common stock issued under dividend reinvestment and stock purchase plan	$ 7	1,427			1,434
Stock-based compensation		1,295			1,295
Cash dividends declared			(4,251)		(4,251)
Balance (in shares) at Mar. 31, 2019	24,900,347
Balance at Mar. 31, 2019	$ 2,490	$ 132,018	$ 256,512	$ (4,578)	$ 386,442

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash Flows From Operating Activities:
Net income	$ 10,841,000	$ 11,111,000
Adjustments to reconcile net income to net cash provided by operating activities:
Provision (credit) for loan losses	(457,000)	1,512,000
Provision (credit) for deferred income taxes	512,000	(3,301,000)
Depreciation and amortization of premises and equipment	987,000	917,000
Amortization of right of use asset - operating leases	522,000
Premium amortization on investment securities, net	284,000	466,000
Stock-based compensation expense	1,295,000	1,128,000
Common stock issued in lieu of cash for director fees	32,000	16,000
Accretion of cash surrender value on bank-owned life insurance	(535,000)	(488,000)
Pension expense (credit)	101,000	(80,000)
(Increase) decrease in other assets	(231,000)	1,944,000
Decrease in accrued expenses and other liabilities	(2,381,000)	(478,000)
Net cash provided by operating activities	10,970,000	12,747,000
Proceeds from maturities and redemptions of investment securities:
Held-to-maturity	386,000	1,054,000
Available-for-sale	18,747,000	17,032,000
Purchases of investment securities:
Held-to-maturity		(338,000)
Available-for-sale	(2,526,000)	(122,960,000)
Net decrease (increase) in loans	8,899,000	(184,761,000)
Proceeds from sale of other real estate owned		5,125,000
Net decrease in restricted stock	11,275,000	4,130,000
Purchases of premises and equipment, net	(801,000)	(1,289,000)
Purchases of bank-owned life insurance		(20,000,000)
Net cash provided by (used in) investing activities	35,980,000	(302,007,000)
Cash Flows From Financing Activities:
Net increase in deposits	222,237,000	381,652,000
Net decrease in short-term borrowings	(253,747,000)	(108,364,000)
Proceeds from long-term debt	14,445,000	39,680,000
Repayment of long-term debt	(10,000,000)	(26,450,000)
Proceeds from issuance of common stock, net	1,434,000	7,319,000
Proceeds from exercise of stock options	203,000	96,000
Shares withheld upon the vesting and conversion of RSUs	(830,000)	(722,000)
Repurchases of common stock	(15,331,000)
Cash dividends paid	(8,702,000)	(3,705,000)
Net cash (used in) provided by financing activities	(50,291,000)	289,506,000
Net (decrease) increase in cash and cash equivalents	(3,341,000)	246,000
Cash and cash equivalents, beginning of year	47,358,000	69,672,000
Cash and cash equivalents, end of period	44,017,000	69,918,000
Supplemental Cash Flow Disclosures:
Cash paid for interest	10,896,000	7,091,000
Operating cash flows from operating leases	712,000
Noncash investing and financing activities:
Right-of-use assets obtained in exchange for operating lease liabilities	15,713,000
Cash dividends payable	$ 5,000	$ 3,859,000

Basis Of Presentation

Basis Of Presentation	3 Months Ended
	Mar. 31, 2019
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 (“GAAP”) 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. 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, 201 8 .  The consolidated financial information included herein as of and for the periods ended March 31, 2019 and 2018 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, 201 8 consolidated balance sheet was derived from the Corporation's December 31, 201 8 audited consolidated financial statements. When appropriate, items in the prior year financial statements are reclassified to conform to the current period presentation. 

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2019
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.      Three Months Ended  March 31,  (dollars in thousands, except per share data) 2019 2018  Net income $ 10,841 $ 11,111  Income allocated to participating securities (1) — 37  Income allocated to common stockholders $ 10,841 $ 11,074   Weighted average:  Common shares 25,284,357 24,962,520  Dilutive stock options and restricted stock units (1) 156,204 204,345  25,440,561 25,166,865  Earnings per share:  Basic $.43 $.44  Diluted .43 .44  (1) Restricted stock units (“RSUs”) awarded in 2016 accrue d dividends at the same rate as the dividends declared by the Board of Directors on the Corporation’s common stock. For purpose s of computing EPS, these RSUs we re considered to participate with common stock in the earnings of the Corporation and, there fore, the Corporation calculated basic and diluted EPS using the two-class method. Substantially all of the RSUs awarded in 2016 vested on December 31, 2018. As a result, beginning in 2019, the Corporation calculates basic and dilutive EPS using the trea sury stock method.

Comprehensive Income

Comprehensive Income	3 Months Ended
	Mar. 31, 2019
Comprehensive Income [Abstract]
Comprehensive Income	3 - COMPREHENSIVE INCOME  Comprehensive income includes net income and other comprehensive income (loss). Other comprehensive income (loss) includes revenues, expenses, gains and losses that under GAAP are included in comprehensive income but excluded from net income. Other comprehensive income (loss) for the Corporation consists of unrealized holding gains or losses on available-for-sale securities and derivative instruments and changes in the funded status of the Bank’s defined benefit pension plan, all net of related income taxes. Accumulated other comprehensive income (loss) is recognized as a separate component of stockholders’ equity.  The components of other comprehensive income (loss) and the related tax effects are as follows:     Three Months Ended  March 31,  (in thousands) 2019 2018  Change in net unrealized holding gains (losses) on available-for-sale securities:  Change arising during the period $ 8,417 $ (11,734)  Tax effect 2,536 (3,548)  5,881 (8,186)  Change in funded status of pension plan:  Amortization of net actuarial loss included in net income (1) 88 —  Tax effect 27 —  61 —  Change in unrealized loss on derivative instrument:  Amount of loss recognized during the period (1,614) —  Reclassification adjustment for net interest expense included in net income (2) 69 —  (1,545) —  Tax effect (465) —  (1,080) —  Other comprehensive income (loss) $ 4,862 $ (8,186)  (1) Represents the amortization of net actuarial loss relating to the Corporation’s defined benefit pension plan. This item is a component of net periodic pension cost (see “Note 7 – Defined Benefit Pension Plan”) and included in the consolidated statements of income in the line item, “Other noninterest income.”  (2) Represents the net interest expense recorded on derivative transactions and included in the consolidated statements of income under “Interest expense.”  The following table sets forth the components of accumulated other comprehensive loss , net of tax:      Current  Balance Period Balance  (in thousands) 12/31/18 Change 3/31/19  Unrealized holding gains (losses) on available-for-sale securities $ (2,955) $ 5,881 $ 2,926  Unrealized actuarial loss on pension plan (5,696) 61 (5,635)  Unrealized loss on derivative instruments (789) (1,080) (1,869)  Accumulated other comprehensive loss, net of tax $ (9,440) $ 4,862 $ (4,578)

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2019
Investment 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.      March 31, 2019  Gross Gross  Amortized Unrealized Unrealized Fair  (in thousands) Cost Gains Losses Value  Held-to-Maturity Securities:  State and municipals $ 4,809 $ 35 $ — $ 4,844  Pass-through mortgage securities 260 13 — 273  Collateralized mortgage obligations 55 — — 55  $ 5,124 $ 48 $ — $ 5,172  Available-for-Sale Securities:  State and municipals $ 408,205 $ 5,932 $ (1,792) $ 412,345  Pass-through mortgage securities 66,833 284 (558) 66,559  Collateralized mortgage obligations 151,695 1,755 (163) 153,287  Corporate bonds 119,000 — (1,270) 117,730  $ 745,733 $ 7,971 $ (3,783) $ 749,921   December 31, 2018  Held-to-Maturity Securities:  State and municipals $ 5,142 $ 36 $ — $ 5,178  Pass-through mortgage securities 267 11 — 278  Collateralized mortgage obligations 95 1 — 96  $ 5,504 $ 48 $ — $ 5,552  Available-for-Sale Securities:  State and municipals $ 422,235 $ 3,220 $ (5,417) $ 420,038  Pass-through mortgage securities 66,631 24 (1,169) 65,486  Collateralized mortgage obligations 154,378 886 (363) 154,901  Corporate bonds 119,000 — (1,410) 117,590  $ 762,244 $ 4,130 $ (8,359) $ 758,015  At March 31, 2019 and December 31, 2018 , investment securities with a carrying value of $391,614,000 and $342,712,000 , 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 March 31, 2019 and December 31, 2018 .  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.      March 31, 2019  Less than 12 Months  12 Months or More Total  Fair Unrealized Fair Unrealized Fair Unrealized  (in thousands) Value Loss Value Loss Value Loss  State and municipals $ — $ — $ 60,339 $ (1,792) $ 60,339 $ (1,792)  Pass-through mortgage securities — — 28,282 (558) 28,282 (558)  Collateralized mortgage obligations — — 7,160 (163) 7,160 (163)  Corporate bonds 117,730 (1,270) — — 117,730 (1,270)  Total temporarily impaired $ 117,730 $ (1,270) $ 95,781 $ (2,513) $ 213,511 $ (3,783)   December 31, 2018  State and municipals $ 102,882 $ (1,639) $ 62,995 $ (3,778) $ 165,877 $ (5,417)  Pass-through mortgage securities 38,421 (142) 23,425 (1,027) 61,846 (1,169)  Collateralized mortgage obligations 32,577 (89) 7,342 (274) 39,919 (363)  Corporate bonds 97,590 (1,410) — — 97,590 (1,410)  Total temporarily impaired $ 271,470 $ (3,280) $ 93,762 $ (5,079) $ 365,232 $ (8,359)  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 March 31, 2019 .  Sales of Available-for-Sale and Held-to-Maturity Securities. There were no sales of available-for-sale or held-to-maturity securities during the three months ended March 31, 2019 and 2018.   Maturities. The following table sets forth by maturity the amortized cost and fair value of the Bank’s state and municipal securities and corporate bonds at March 31, 2019 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 mortgage 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.      (in thousands) Amortized Cost Fair Value  Held-to-Maturity Securities:  Within one year $ 3,241 $ 3,243  After 1 through 5 years 1,568 1,601  After 5 through 10 years — —  After 10 years — —  Mortgage-backed securities 315 328  $ 5,124 $ 5,172  Available-for-Sale Securities:  Within one year $ 38,917 $ 39,170  After 1 through 5 years 41,470 41,908  After 5 through 10 years 290,124 291,350  After 10 years 156,694 157,647  Mortgage-backed securities 218,528 219,846  $ 745,733 $ 749,921 

Loans

Loans	3 Months Ended
	Mar. 31, 2019
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.     March 31, 2019  Loans Allowance for Loan Losses  (in thousands) Individually Evaluated for Impairment Collectively Evaluated for Impairment Ending Balance Individually Evaluated for Impairment Collectively Evaluated for Impairment Ending Balance  Commercial and industrial $ 15 $ 100,929 $ 100,944 $ — $ 1,047 $ 1,047  Commercial mortgages:  Multifamily — 781,835 781,835 — 6,435 6,435  Other — 435,579 435,579 — 3,517 3,517  Owner-occupied 519 86,953 87,472 — 685 685  Residential mortgages:  Closed end 1,692 1,775,640 1,777,332 15 18,056 18,071  Revolving home equity 714 65,335 66,049 — 402 402  Consumer and other 296 4,811 5,107 — 42 42  $ 3,236 $ 3,251,082 $ 3,254,318 $ 15 $ 30,184 $ 30,199   December 31, 2018  Commercial and industrial $ 22 $ 98,763 $ 98,785 $ — $ 1,158 $ 1,158  Commercial mortgages:  Multifamily — 756,714 756,714 — 5,851 5,851  Other — 433,330 433,330 — 3,783 3,783  Owner-occupied 520 90,731 91,251 — 743 743  Residential mortgages:  Closed end 1,814 1,807,837 1,809,651 16 18,828 18,844  Revolving home equity 743 66,967 67,710 — 410 410  Consumer and other 324 5,634 5,958 — 49 49  $ 3,423 $ 3,259,976 $ 3,263,399 $ 16 $ 30,822 $ 30,838  The following tables present the activity in the allowance for loan losses for the periods indicated.     (in thousands) Balance at 1/1/19 Chargeoffs Recoveries Provision for Loan Losses (Credit) Balance at 3/31/19  Commercial and industrial $ 1,158 $ 54 $ 4 $ (61) $ 1,047  Commercial mortgages:  Multifamily 5,851 — — 584 6,435  Other 3,783 — — (266) 3,517  Owner-occupied 743 — — (58) 685  Residential mortgages:  Closed end 18,844 134 1 (640) 18,071  Revolving home equity 410 — — (8) 402  Consumer and other 49 — 1 (8) 42  $ 30,838 $ 188 $ 6 $ (457) $ 30,199     (in thousands) Balance at 1/1/18 Chargeoffs Recoveries Provision for Loan Losses (Credit) Balance at 3/31/18  Commercial and industrial $ 1,441 $ 74 $ — $ (103) $ 1,264  Commercial mortgages:  Multifamily 6,423 — — 346 6,769  Other 4,734 — — 46 4,780  Owner-occupied 1,076 — — (158) 918  Residential mortgages:  Closed end 19,347 20 1 1,338 20,666  Revolving home equity 689 49 — 42 682  Consumer and other 74 — — 1 75  $ 33,784 $ 143 $ 1 $ 1,512 $ 35,154 For individually impaired loans, the following tables set forth by class of loans at March 31, 2019 and December 31, 2018 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 three months ended March 31, 2019 and 2018 . The recorded investment is the unpaid principal balance of the loans less any interest payments applied to principal and any direct chargeoffs plus o r 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.     Three Months Ended  March 31, 2019 March 31, 2019  Unpaid Average Interest  Recorded Principal Related Recorded Income  (in thousands) Investment Balance Allowance Investment Recognized  With no related allowance recorded:  Commercial and industrial $ 15 $ 15 $ — $ 17 $ —  Commercial mortgages - owner-occupied 519 602 — 519 8  Residential mortgages:  Closed end 1,538 1,557 — 1,546 1  Revolving home equity 714 734 — 729 —  Consumer and other 296 296 — 312 —  With an allowance recorded:  Residential mortgages - closed end 154 154 15 155 2  Total:  Commercial and industrial 15 15 — 17 —  Commercial mortgages - owner-occupied 519 602 — 519 8  Residential mortgages:  Closed end 1,692 1,711 15 1,701 3  Revolving home equity 714 734 — 729 —  Consumer and other 296 296 — 312 —  $ 3,236 $ 3,358 $ 15 $ 3,278 $ 11        Three Months Ended  December 31, 2018 March 31, 2018  Unpaid Average Interest  Recorded Principal Related Recorded Income  (in thousands) Investment Balance Allowance Investment Recognized  With no related allowance recorded:  Commercial and industrial $ 22 $ 22 $ — $ 99 $ 1  Commercial mortgages - owner-occupied 520 604 — 552 6  Residential mortgages:  Closed end 1,561 1,573 — 1,141 1  Revolving home equity 743 747 — — —  Consumer and other 324 324 — 117 1  With an allowance recorded:  Residential mortgages - closed end 253 253 16 286 3  Total:  Commercial and industrial 22 22 — 99 1  Commercial mortgages - owner-occupied 520 604 — 552 6  Residential mortgages:  Closed end 1,814 1,826 16 1,427 4  Revolving home equity 743 747 — — —  Consumer and other 324 324 — 117 1  $ 3,423 $ 3,523 $ 16 $ 2,195 $ 12  Aging of Loans . The following tables present the aging of the recorded investment in loans by class of loans.      March 31, 2019  Past Due Total Past  90 Days or Due Loans &  30-59 Days 60-89 Days More and Nonaccrual Nonaccrual Total  (in thousands) Past Due Past Due Still Accruing Loans Loans Current Loans  Commercial and industrial $ 445 $ — $ — $ — $ 445 $ 100,499 $ 100,944  Commercial mortgages:  Multifamily — — — — — 781,835 781,835  Other — — — — — 435,579 435,579  Owner-occupied 231 — — — 231 87,241 87,472  Residential mortgages:  Closed end 2,012 — — 1,372 3,384 1,773,948 1,777,332  Revolving home equity 96 249 — 714 1,059 64,990 66,049  Consumer and other — — — — — 5,107 5,107  $ 2,784 $ 249 $ — $ 2,086 $ 5,119 $ 3,249,199 $ 3,254,318   December 31, 2018  Commercial and industrial $ — $ 43 $ — $ — $ 43 $ 98,742 $ 98,785  Commercial mortgages:  Multifamily — — — — — 756,714 756,714  Other — — — — — 433,330 433,330  Owner-occupied — — — — — 91,251 91,251  Residential mortgages:  Closed end 864 — — 1,392 2,256 1,807,395 1,809,651  Revolving home equity — — — 743 743 66,967 67,710  Consumer and other 2 — — — 2 5,956 5,958  $ 866 $ 43 $ — $ 2,135 $ 3,044 $ 3,260,355 $ 3,263,399  There were no loans in the process of foreclosure nor did the Bank hold any foreclosed residential real estate property at March 31, 2019 or December 31, 201 8 .  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.  The Bank did not modify any loans in troubled debt restructurings during the first three months of 2019. During the three months ended March 31, 2018, the Bank modified two consumer loans to a single borrower into one loan in a troubled debt restructuring amounting to $350,000 . The term of the restructured loan was exte nded for 12 months and the post-modification interest rate was lower than the current market rate for new debt with similar risk .  At March 31, 2019 and December 31, 2018 , the Bank had an allowance for loan losses of $15,000 and $16,000 , respectively, allocated to specific troubled debt restructurings. The Bank had no commitments to lend additional amounts in connection with loans that were classified a s troubled debt restructurings.  There were no troubled debt restructurings for which there was a payment default during the three months ended March 31, 2019 and 2018 that were modified during the 12 -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 changes in the borrower ’ s financial condition, c redit concentration s , changes in collateral values , economic conditions and environmental contamination of properties securing mortgage loans. The Bank’s commercial loans, including those secured by real estate 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, most 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 sources of repayment for residential and commercial mortgage loans include employment and other income of the borrowers, the businesses of the borrowers and cash flows from the underlying properties. In t he case of multifamily mortgage loans , a substantial portion of the underlying properties are rent stabilized or rent controlled. These sources of repayment are dependent on, among other things, the strength of the local economy.  Credit Quality Indicators. The Corporation 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 , due diligence checks 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 s ystem 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 during the underwriting process and affirmed as part of the approval process . The ratings are periodically reviewed and evaluated based on 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 80% of the recorded investment of com mercial real estate loans as of December 31 of the prior year must be reviewed annually. Lines of credit are also reviewed annually at each proposed reaffirmation. 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 by management .  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.      March 31, 2019  Internally Assigned Risk Rating  Special  (in thousands) Pass Watch Mention Substandard Doubtful Total  Commercial and industrial $ 99,912 $ — $ 634 $ 398 $ — $ 100,944  Commercial mortgages:  Multifamily 781,835 — — — — 781,835  Other 435,579 — — — — 435,579  Owner-occupied 82,097 1,078 3,778 519 — 87,472  $ 1,399,423 $ 1,078 $ 4,412 $ 917 $ — $ 1,405,830   December 31, 2018  Commercial and industrial $ 97,684 $ — $ 667 $ 434 $ — $ 98,785  Commercial mortgages:  Multifamily 756,714 — — — — 756,714  Other 417,838 14,194 1,298 — — 433,330  Owner-occupied 85,710 1,090 3,911 540 — 91,251  $ 1,357,946 $ 15,284 $ 5,876 $ 974 $ — $ 1,380,080  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 by management as Watch, Special Mention, Substandard or Doubtful.      March 31, 2019  Internally Assigned Risk Rating  Special  (in thousands) Pass Watch Mention Substandard Doubtful Total  Residential mortgages:  Closed end $ 1,775,328 $ 312 $ — $ 1,692 $ — $ 1,777,332  Revolving home equity 65,088 — 247 714 — 66,049  Consumer and other 4,307 — — 296 — 4,603  $ 1,844,723 $ 312 $ 247 $ 2,702 $ — $ 1,847,984   December 31, 2018  Residential mortgages:  Closed end $ 1,807,525 $ 312 $ — $ 1,814 $ — $ 1,809,651  Revolving home equity 66,718 — 249 743 — 67,710  Consumer and other 4,958 — — 324 — 5,282  $ 1,879,201 $ 312 $ 249 $ 2,881 $ — $ 1,882,643  Deposit account overdrafts were $504,000 and $676,000 at March 31, 2019 and December 31, 2018 , 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	3 Months Ended
	Mar. 31, 2019
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 stock options and SARs 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 or SAR 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 upon the exercise of stock options or SARs. A maximum of 787,500 shares may be issued as restricted stock awards or upon the conversion of RSUs. At March 31, 2019 , 1,751,778 equity awards remain available to be granted under the 2014 Plan of which 298,633 may be granted as restricted stock awards or RSUs.  Details of RSUs. The following table summarizes the vesting schedule of RSUs outstanding at March 31, 2019 by the year they were originally granted.      Granted During the Year Ended December 31,  Total 2019 2018 2017 2016  Number of RSUs:  Granted during the year 379,435 107,144 70,688 94,329 107,274  Outstanding at March 31, 2019 220,890 107,144 44,338 66,408 3,000   Scheduled to vest during:  2019 94,126 23,535 14,359 53,232 3,000  2020 54,414 35,706 8,782 9,926 —  2021 36,632 12,185 21,197 3,250 —  2022 35,718 35,718 — — —  220,890 107,144 44,338 66,408 3,000  The RSUs in the table above include performance-based RSUs with vesting based on the financial performance of the Corporation in 201 9 and 20 20 and service-based RSUs with various service-based vesting periods. The grant date fair value of RSUs awarded in 2016 is equal to the market price of the shares underlying the awards on the grant date. The grant date fair value of RSUs awarded in 201 7 , 201 8 and 201 9 is equal to the market price of the shares underlying the awards on the grant date, discounted for dividends that are not paid on these RSUs.  The following table presents a summary of RSUs outstanding at March 31, 2019 and changes during the three 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, 2019 215,084 $ 23.79  Granted 107,144 19.48  Converted (101,338) 20.79  Outstanding at March 31, 2019 220,890 $ 23.08 1.41 $ 4,844  Vested and Convertible at March 31, 2019 — $ — — $ —  The performance-based RSUs granted in 2019 and 2018 have a maximum payout potential of 1.50 shares of the Corporati on’s common stock for each RSU awarded. Performance-based RSU’s granted in 2017 have a maximum payout potential of 1.25 shares for each RSU awarded. All other RSUs outstanding at March 31, 2019 have a maximum payout potential of one share of the Corporation’s common stock for each RSU awarded. All of the RSUs outstanding at March 31, 2019 are currently expected to vest and become convertible in the future. The total intrinsic value of RSUs converted during the first three months of 201 9 and 201 8 was $2,107,000 and $2,884,000 , respectively.  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 employ ees and non-employee directors. 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. Stock options granted under the 2006 Plan have a five year vesting period and a ten year term.  Fair Value of Stock Options. The grant date fair value of options was estimated on the date of grant using the Black-Scholes option pricing model. Substantially all outstanding stock options were expensed in prior years.  Stock Option Activity. The following table presents a summary of options outstanding at March 31, 2019 , and changes during the three 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, 2019 96,112 $ 11.80  Exercised (19,656) 10.32  Forfeited or expired — —  Outstanding at March 31, 2019 76,456 $ 12.18 1.43 $ 745  Exercisable at March 31, 2019 76,156 $ 12.16 1.42 $ 744  All options outstanding at March 31, 2019 are either fully vested or expected to vest. The total intrinsic value of options exercised during the first three months of 2019 and 2018 was $203,000 and $205,000 , respectively. Cash received from option exercises in the first three months of 2019 and 2018 was $203,000 and $96,000 , respectively . Tax benefits from stock option exercises for the three months ended March 31, 2019 and 2018 were $61,000 and $62,000 , respectively.  Compensation Expense. The Corporation recorded compensation expense for share-based payments of $1,295,000 and $1,128,000 and reco rd ed related income tax benefits of $390,000 and $340,000 for the thre e months ended March 31, 2019 and 2018 , respectively.  Unrecognized Compensation Cost. As of March 31, 201 9 , there was $1,797,000 of total unrecognized compensation cost related to non-vested equity awards comprised of $1,000 for stock options and $1,796,000 for RSUs. The total cost is expected to be recognized over a weighted-average period of 1.3 years, which is based on weighted-average periods of 1.2 years and 1.3 years for stock options and RSUs, respectively.  Other. No cash was used to settle stock options during the first three months of 201 9 or 201 8 . The Corporation uses newly issued shares to settle st ock option exercises and for the conversion of RSUs. During the three months ended March 31, 2019 and 2018, 1,462 and 557 shares, respectively , of the Corporation’s common stock were issued to member s of the Board of Directors in payment of director fees.

Defined Benefit Pension Plan

Defined Benefit Pension Plan	3 Months Ended
	Mar. 31, 2019
Defined Benefit Pension Plan [Abstract]
Retirement Plans	7 - DEFINED BENEFIT PENSION PLAN  The following table sets forth the components of net periodic pension credit .      Three Months Ended  March 31,  (in thousands) 2019 2018  Service cost $ 317 $ 342  Interest cost 446 397  Expected return on plan assets (750) (819)  Amortization of net actuarial loss 88 —  Net pension cost (credit) $ 101 $ (80)  Components of net pension cost (credit) other than the service cost component are included in the line item “Other noninterest income” in the consolidated statements of income. The service cost component is included in the line item “Salaries and employee benefits” in the consolidated statements of income.  The Bank makes cash contributions to the pension plan (“Plan”) which comply with the fund ing requirements of applicable f ederal 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, 2019. Its maximum tax-deductible contribution for the tax year beginning January 1, 2019 is $7,700,000 . The contribution the Bank will make in 2019, if any, has not yet been determined.

Fair Value Of Financial Instrum

Fair Value Of Financial Instruments	3 Months Ended
	Mar. 31, 2019
Fair Value Of Financial Instruments [Abstract]
Fair Value Of Financial Instruments	8 - FAIR VALUE 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 three months ended March 31, 2019 or 2018 .  The fair values of the Corporation’s financial assets and liabilities measured at fair value on a recurring basis are set forth in the table that follows. The fair values of available-for-sale securities 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. Where no significant other observable inputs were available, Level 3 inputs were used. The fair values of interest rate swaps are based on valuation models using observable market data as of the measurement date resulting in a Level 2 classification.      Fair Value Measurements Using:  Quoted Prices Significant  in Active Other Significant  Markets for Observable Unobservable  Identical Assets Inputs Inputs  (in thousands) Total (Level 1) (Level 2) (Level 3)  March 31, 2019:  Financial Assets:  Available-for-Sale Securities:  State and municipals $ 412,345 $ — $ 412,075 $ 270  Pass-through mortgage securities 66,559 — 66,559 —  Collateralized mortgage obligations 153,287 — 153,287 —  Corporate bonds 117,730 — 117,730 —  $ 749,921 $ — $ 749,651 $ 270  Financial Liabilities:  Derivative - interest rate swaps $ 2,675 $ — $ 2,675 $ —   December 31, 2018:  Financial Assets:  Available-for-Sale Securities:  State and municipals $ 420,038 $ — $ 420,038 $ —  Pass-through mortgage securities 65,486 — 65,486 —  Collateralized mortgage obligations 154,901 — 154,901 —  Corporate bonds 117,590 — 117,590 —  $ 758,015 $ — $ 758,015 $ —  Financial Liabilities:  Derivative - interest rate swaps $ 1,130 $ — $ 1,130 $ —  The Corporation had no assets measured at fair value on a nonrecurring basis at March 31, 2019 or December 31, 2018.  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, liquidity, 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 income 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 March 31, 2019 December 31, 2018  Fair Value Carrying Carrying  (in thousands) Hierarchy Amount Fair Value Amount Fair Value  Financial Assets:  Cash and cash equivalents Level 1 $ 44,017 $ 44,017 $ 47,358 $ 47,358  Held-to-maturity securities Level 2 2,402 2,450 2,445 2,493  Held-to-maturity securities Level 3 2,722 2,722 3,059 3,059  Loans Level 3 3,224,119 3,107,542 3,232,561 3,079,946  Restricted stock Level 1 29,411 29,411 40,686 40,686   Financial Liabilities:  Checking deposits Level 1 925,141 925,141 935,574 935,574  Savings, NOW and money market deposits Level 1 1,699,996 1,699,996 1,590,341 1,590,341  Time deposits Level 2 682,072 680,348 559,057 553,900  Short-term borrowings Level 1 135,176 135,176 388,923 388,923  Long-term debt Level 2 366,472 362,368 362,027 354,651  

Leases

Leases	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Leases	9 – LEASES  As described in “Note 12 – Adoption of New Accounting Standards,” the Bank adopted Accounting Standards Update (“ASU”) 2016-02 “Leases” and all subsequent amendments on January 1, 2019.  The Bank leases certain branch and back-office locations under long-term, non-cancelable operating lease agreements. The leases expire at various dates through 2028 and have a weighted average remaining term of 7.75 years at March 31, 2019. Many of the Bank’s leases include renewal options of up to 10 years. The exercise of lease renewal options is at the Bank’s sole discretion.  Rental payments required by the Bank’s lease agreements may increase over time based on certain variable components such as real estate taxes and common area maintenance charges.  The Bank determines if an arrangement is a lease at inception. ASU 2016-02 requires the recognition of a right-of-use (“ROU”) asset and lease liability at the commencement date based on the present value of lease payments over the lease term. As most of the Bank’s leases do not provide an implicit interest rate, the Bank uses its incremental borrowing rate to determine the present value of the lease payments. The weighted average discount rate was 3.10% at March 31, 2019. For leases entered into on a going forward basis, the Bank’s ROU asset and lease liability may include options to extend the lease when it is reasonably certain that the Bank will exercise that option. Lease expense will be recognized on a straight-line basis over the lease term.  Leases with an initial term of 12 months or less are not recorded on the balance sheet. The Bank has one such lease at March 31, 2019 and recognize s lease expense for this lease on a straight-line basis over the lease term .  The components of lease expense for the three months ended March 31, 2019 are as follows:    (in thousands)  Operating lease cost $ 642  Variable lease cost 135  Short-term lease cost 2  $ 779  The following is a maturity analysis of the operating lease liability as of March 31, 2019.       (dollars in thousands)  12 months ended March 31, 2020 $ 2,531  2021 2,446  2022 2,382  2023 2,285  2024 1,979  Thereafter 6,438  Total lease payments 18,061  Less: interest 2,062  Present value of lease payments $ 15,999  Related Party Leases. Buildings occupied by two of the Bank’s branch offices are leased from a director of the Corporation and the Bank with a total lease liability of $155,000 at March 31, 2019. The leases expire on October 31, 2022 and December 31, 2019 with options to renew.

Revenue From Contracts With Cus

Revenue From Contracts With Customers	3 Months Ended
	Mar. 31, 2019
Revenue From Contracts With Customers [Abstract]
Revenue From Contracts With Customers	10 – REVENUE FROM CONTRACTS WITH CUSTOMERS  T he noninterest income section of the co nsolidated statements of income includes the f ollowing types of revenues earned from the Bank's contracts with customers.  Investment Management Division Revenues. The Bank holds customer assets in a fiduciary capacity and provides various services, including trust account services, estate settlement, custody and asset management. The services are performed for customer s over time, requiring a time-based measure of progress. Fees are assessed based on market valu es of customer assets held or under management as of a certain point in time, and income cannot be estimated prior to the end of the measurement period. Volatility in equity and other market values will impact the amount of revenue that will be earned. Fees are generally earned and collected on a monthly or quarterly basis, accrued to income as earned and included in the consolidated statements of income in the line item "Investment Management Division income."  Deposit Account Revenues. Fees are earned and collected on a monthl y basis for account maintenance and activity -based service charges o n deposit accounts. The services are performed for customer s over time, requiring a time-based measure of progress. Customers may be required to maintain minimum balances and average balances. Additional fees may also be earned for overdrafts, replacement of debit cards, bill payment, lockbox services and ACH services, among others, and are earned and collected as transactions take place. All deposit account fees are accrued to inco me as earned, either monthly or at the point of sale , and included in the consolidated statements of income in the line item "Service charges on deposit accounts."  Transaction and Branch Service Fees. The following revenue streams are components of “Other noninterest income” on the consolidated statements of income. These components totaled $493,000 and $455,000 for the three months ended March 31, 2019 and 2018, respectively. Other items included in “Other noninterest income,” such as bank-owned life insurance (“BOLI”) income, non-service components of net pension cost and real estate tax refunds are excluded from revenue from contracts with customers.  Debit/Credit Card Revenue s . The Bank earns a fee when its customers use their debit or credit cards in point-of-sale transactions. These fees are generally known as interchange fees. Interchange fees from cardholder transactions represent a percentage of the underlying transaction value and are recorded daily, concurrently with the transaction processing services provided to the cardholder.  Branch Service s Revenues. The Bank charges fees for safe deposit box rentals, wire transfers, money orders, checkbook printing, official checks an d ATM usage. Fees are earned, collected and generally recorded as revenue when the service is provided.  Investment Advisory Services. The Bank provides branch space to a third party who sells financial products to the Bank’s customers and pays commissions to the Bank based on the products sold. Commissions are variable and based on the market values of financial assets sold. C ommissions are accrued to incom e as earned. 

Derivatives

Derivatives	3 Months Ended
	Mar. 31, 2019
Derivatives [Abstract]
Derivatives	11 – DERIVATIVES  As part of its asset liability management activities , the Co rporation may utilize interest rate swap s to help manage its interest rate risk posi tion. The notional amount of an interest rate swap does not represent the amount exchanged by the parties. The exchange of cash flows is determined by reference to the notional amount and the other terms of the interest rate swap agreement s.  The Bank entered into an interest rate swap with a notional amount totaling $150 million on May 22, 2018 and a second interest rate swap with a notional amount of $50 million on January 17, 2019. The interest rate swaps were designated as cash flow hedge s of certain Federal Home Loan Bank (“ FHLB ”) advances and brokered certificates of deposit. The swaps w ere determined to be fully effective during the period presented and therefore no amount of ineffectiveness has been included in net income. The aggregate fa ir value of the swaps is recorded in other liabilities , with changes in fair value net of related income taxes recorded in other comprehensive income (loss). The amount included in accumulated other comprehensive income (loss) would be reclassified to current earnings should the hedge s no longer be considered effective. The Corporation expects the hedge s to remain fully effective during the remaining term of the swaps .  The following table summarizes informati on about the interest rate swaps designated as c ash flow hedges.     March 31, 2019 December 31, 2018  Notional amount $200 million $150 million  Weighted average fixed pay rate 2.83% 2.90%  Weighted average 3-month LIBOR receive rate 2.70% 2.38%  Weighted average maturity 2.81 Years 2.43 Years  Interest expense recorded on the swap transaction , which totaled $69,000 for the three months ended March 31, 201 9 , is recorded as a component of i nterest expense in the consolidated statements of income . Amounts reported in accumulated other comprehensive income (loss) related to swaps will be reclassified to interest expense as interest payments are received /made on the Bank’s variable-rate liabilities. During the three months ended March 31, 2019, the Corporation had $69,000 of reclassifications to interest expense . During the next twelve months, the Corporation estimates that $667,000 will be reclassified as an increase to interest expense.  The following table presents the net losses recorded in the consolidated statements of i ncome and the consolidated statements of c omprehensive income (loss) relating to interest rate swaps for the three months ended March 31, 2019.     Amount of Loss  Amount of Loss Amount of Loss Recognized in Other  Recognized in OCI Reclassified from OCI Noninterest Income  (in thousands) (Effective Portion) to Interest Expense (Ineffective Portion)  Interest rate contract:  Three months ended March 31, 2019 $ 1,614 $ 69 $ —  The following table reflects the amounts relating to the interest rate swap included in the consolidated balance sheet at March 31, 2019.     March 31, 2019 December 31, 2018  Notional Fair Value Notional Fair Value  (in thousands) Amount Asset Liability Amount Asset Liability  Included in other liabilities $ — $ 2,675 $ — $ 1,130  Interest rate swap hedging FHLB advances $ 50,000 $ 150,000  Interest rate swap hedging brokered  certificates of deposit $ 150,000 $ —   Credit Risk Related Contingent Features . The Bank’s agreement with its interest rate swap counterparty s ets forth minimum collateral posting thresholds . If the termination value of the swap is a net asset position, the counterparty may be required to post collateral against its obligations to the Bank under the agreement. However, if the termination value of the swap is a net liability position, the Bank may be required to post collateral to the counterparty. At March 31 , 201 9 , the Bank is in compliance with the collateral posting provisions to its counterparty under the agreement of approximately $2.7 million . If the Bank had breached any of these provisions at March 31 , 201 9 , it could have been required to settle its obligations under the agreement at the termination value.

Adoption Of New Accounting Stan

Adoption Of New Accounting Standards	3 Months Ended
	Mar. 31, 2019
Basis Of Presentation [Abstract]
Adoption of New Accounting Standards	12 – ADOPTION OF NEW ACCOUNTING STANDARDS  In February 2016, the Financial Accounting Standards Board (“FASB”) issued ASU 2016-02 “Leases.” ASU 2016-02 affects any entity that enters into a lease and is intended to increase the transparency and comparability of financial statements among organizations. The ASU requires, among other changes, a lessee to recognize on its balance sheet a lease asset and a lease liability for those leases previously classified as operating leases. The lease asset represents the right to use the underlying asset for the lease term and the lease liability represents the discounted value of the required lease payments to the lessor. The ASU also requires entities to disclose key information about leasing arrangements. The Corporation implemented ASU 2016-02 on January 1, 2019 utilizing the transition method described in ASU 2018-11 “Leases – Targeted Improvements.” Upon adoption of the ASU, the Corporation recorded a right-of-use asset and lease liability of $15.7 million and $16.5 million, respectively, for its outstanding operating leases. Implementation did not significantly impact the Corporation’s results of operations, cash flows or regulatory capital ratios. See “Note 9 – Leases” for disclosures required by ASU 2016-02.  The Corporation elected the package of practical expedients permitted in ASU 2016-02. Accordingly, the Bank accounted for its existing operating leases as operating leases under the new guidance, without reassessing (a) whether the contracts contain a lease under ASU 2016-02, (b) whether classification of the operating leases would be different in accordance with ASU 2016-02, or (c) whether the unamortized initial direct costs before transition adjustments (as of December 31, 2018) would have met the definition of initial direct costs in ASU 2016-02 at lease commencement. 

Impact Of Issued But Not Yet Ef

Impact Of Issued But Not Yet Effective Accounting Standards	3 Months Ended
	Mar. 31, 2019
Impact Of Issued But Not Yet Effective Accounting Standards [Abstract]
Impact Of Issued But Not Yet Effective Accounting Standards	1 3 – IMPACT OF IS SUED BUT NOT YET EFFECTIVE ACCOUNTING STANDARDS  The pronouncements discussed in this section are not inten ded to be an all-inclusive list, but rather only those pronouncements that could potentially have an impact on the Corporation’s financial position, results of operations or disclosures .  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, 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. 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, Chief Risk Officer, Controller, Manager of Accounting Controls and Chief Auditor. A broader group of Bank staff has been identified to assist in implementing the ASU, including representatives of the Bank’s loan operations, credit administration, lending, investments and technology functions. The committee has selected and engaged a third-party software provider, developed an implementation timeline, accumulated the historical data needed to implement the ASU and is reviewing the accounting policy decisions, documentation and internal control processes needed to fully implement the ASU.  In August 2018, the FASB issued ASU 2018-13 “Changes to the Disclosure Requirements for Fair Value Measurement” and ASU 2018-14 “Changes to the Disclosure Requirements for Defined Benefit Plans.” These ASUs modify certain disclosure requirements pertaining to fair value measurements and defined benefit plans, respectively, as part of the FASB’s disclosure framework project, and are intended to improve the effectiveness of disclosures in the notes to financial statements. ASU 2018-13 is effective for fiscal years and interim periods within those fiscal years beginning after December 15, 2019. ASU 2018-14 is effective for fiscal years ending after December 15, 2020. Early adoption is permitted. The adoption of these ASUs will modify the Corporation’s disclosures but will not impact its financial position or results of operations.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Calculation Of Earnings Per Share	   Three Months Ended  March 31,  (dollars in thousands, except per share data) 2019 2018  Net income $ 10,841 $ 11,111  Income allocated to participating securities (1) — 37  Income allocated to common stockholders $ 10,841 $ 11,074   Weighted average:  Common shares 25,284,357 24,962,520  Dilutive stock options and restricted stock units (1) 156,204 204,345  25,440,561 25,166,865  Earnings per share:  Basic $.43 $.44  Diluted .43 .44  (1) Restricted stock units (“RSUs”) awarded in 2016 accrue d dividends at the same rate as the dividends declared by the Board of Directors on the Corporation’s common stock. For purpose s of computing EPS, these RSUs we re considered to participate with common stock in the earnings of the Corporation and, there fore, the Corporation calculated basic and diluted EPS using the two-class method. Substantially all of the RSUs awarded in 2016 vested on December 31, 2018. As a result, beginning in 2019, the Corporation calculates basic and dilutive EPS using the trea sury stock method.

Comprehensive Income (Tables)

Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2019
Comprehensive Income [Abstract]
Components Of Other Comprehensive Income And Related Tax Effects	   Three Months Ended  March 31,  (in thousands) 2019 2018  Change in net unrealized holding gains (losses) on available-for-sale securities:  Change arising during the period $ 8,417 $ (11,734)  Tax effect 2,536 (3,548)  5,881 (8,186)  Change in funded status of pension plan:  Amortization of net actuarial loss included in net income (1) 88 —  Tax effect 27 —  61 —  Change in unrealized loss on derivative instrument:  Amount of loss recognized during the period (1,614) —  Reclassification adjustment for net interest expense included in net income (2) 69 —  (1,545) —  Tax effect (465) —  (1,080) —  Other comprehensive income (loss) $ 4,862 $ (8,186)  (1) Represents the amortization of net actuarial loss relating to the Corporation’s defined benefit pension plan. This item is a component of net periodic pension cost (see “Note 7 – Defined Benefit Pension Plan”) and included in the consolidated statements of income in the line item, “Other noninterest income.”  (2) Represents the net interest expense recorded on derivative transactions and included in the consolidated statements of income under “Interest expense.”
Components Of Accumulated Other Comprehensive Income (Loss), Net Of Tax	    Current  Balance Period Balance  (in thousands) 12/31/18 Change 3/31/19  Unrealized holding gains (losses) on available-for-sale securities $ (2,955) $ 5,881 $ 2,926  Unrealized actuarial loss on pension plan (5,696) 61 (5,635)  Unrealized loss on derivative instruments (789) (1,080) (1,869)  Accumulated other comprehensive loss, net of tax $ (9,440) $ 4,862 $ (4,578) 

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2019
Investment Securities [Abstract]
Amortization Cost And Estimated Fair Value Of Investment Securities	   March 31, 2019  Gross Gross  Amortized Unrealized Unrealized Fair  (in thousands) Cost Gains Losses Value  Held-to-Maturity Securities:  State and municipals $ 4,809 $ 35 $ — $ 4,844  Pass-through mortgage securities 260 13 — 273  Collateralized mortgage obligations 55 — — 55  $ 5,124 $ 48 $ — $ 5,172  Available-for-Sale Securities:  State and municipals $ 408,205 $ 5,932 $ (1,792) $ 412,345  Pass-through mortgage securities 66,833 284 (558) 66,559  Collateralized mortgage obligations 151,695 1,755 (163) 153,287  Corporate bonds 119,000 — (1,270) 117,730  $ 745,733 $ 7,971 $ (3,783) $ 749,921   December 31, 2018  Held-to-Maturity Securities:  State and municipals $ 5,142 $ 36 $ — $ 5,178  Pass-through mortgage securities 267 11 — 278  Collateralized mortgage obligations 95 1 — 96  $ 5,504 $ 48 $ — $ 5,552  Available-for-Sale Securities:  State and municipals $ 422,235 $ 3,220 $ (5,417) $ 420,038  Pass-through mortgage securities 66,631 24 (1,169) 65,486  Collateralized mortgage obligations 154,378 886 (363) 154,901  Corporate bonds 119,000 — (1,410) 117,590  $ 762,244 $ 4,130 $ (8,359) $ 758,015 
Securities With A Continuous Unrealized Losses Position	   March 31, 2019  Less than 12 Months  12 Months or More Total  Fair Unrealized Fair Unrealized Fair Unrealized  (in thousands) Value Loss Value Loss Value Loss  State and municipals $ — $ — $ 60,339 $ (1,792) $ 60,339 $ (1,792)  Pass-through mortgage securities — — 28,282 (558) 28,282 (558)  Collateralized mortgage obligations — — 7,160 (163) 7,160 (163)  Corporate bonds 117,730 (1,270) — — 117,730 (1,270)  Total temporarily impaired $ 117,730 $ (1,270) $ 95,781 $ (2,513) $ 213,511 $ (3,783)   December 31, 2018  State and municipals $ 102,882 $ (1,639) $ 62,995 $ (3,778) $ 165,877 $ (5,417)  Pass-through mortgage securities 38,421 (142) 23,425 (1,027) 61,846 (1,169)  Collateralized mortgage obligations 32,577 (89) 7,342 (274) 39,919 (363)  Corporate bonds 97,590 (1,410) — — 97,590 (1,410)  Total temporarily impaired $ 271,470 $ (3,280) $ 93,762 $ (5,079) $ 365,232 $ (8,359) 
Maturities	   (in thousands) Amortized Cost Fair Value  Held-to-Maturity Securities:  Within one year $ 3,241 $ 3,243  After 1 through 5 years 1,568 1,601  After 5 through 10 years — —  After 10 years — —  Mortgage-backed securities 315 328  $ 5,124 $ 5,172  Available-for-Sale Securities:  Within one year $ 38,917 $ 39,170  After 1 through 5 years 41,470 41,908  After 5 through 10 years 290,124 291,350  After 10 years 156,694 157,647  Mortgage-backed securities 218,528 219,846  $ 745,733 $ 749,921 

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2019
Loans [Abstract]
Loans Individually And Collectively Evaluated For Impairment	   March 31, 2019  Loans Allowance for Loan Losses  (in thousands) Individually Evaluated for Impairment Collectively Evaluated for Impairment Ending Balance Individually Evaluated for Impairment Collectively Evaluated for Impairment Ending Balance  Commercial and industrial $ 15 $ 100,929 $ 100,944 $ — $ 1,047 $ 1,047  Commercial mortgages:  Multifamily — 781,835 781,835 — 6,435 6,435  Other — 435,579 435,579 — 3,517 3,517  Owner-occupied 519 86,953 87,472 — 685 685  Residential mortgages:  Closed end 1,692 1,775,640 1,777,332 15 18,056 18,071  Revolving home equity 714 65,335 66,049 — 402 402  Consumer and other 296 4,811 5,107 — 42 42  $ 3,236 $ 3,251,082 $ 3,254,318 $ 15 $ 30,184 $ 30,199   December 31, 2018  Commercial and industrial $ 22 $ 98,763 $ 98,785 $ — $ 1,158 $ 1,158  Commercial mortgages:  Multifamily — 756,714 756,714 — 5,851 5,851  Other — 433,330 433,330 — 3,783 3,783  Owner-occupied 520 90,731 91,251 — 743 743  Residential mortgages:  Closed end 1,814 1,807,837 1,809,651 16 18,828 18,844  Revolving home equity 743 66,967 67,710 — 410 410  Consumer and other 324 5,634 5,958 — 49 49  $ 3,423 $ 3,259,976 $ 3,263,399 $ 16 $ 30,822 $ 30,838 
Allowance For Loan Losses	   (in thousands) Balance at 1/1/19 Chargeoffs Recoveries Provision for Loan Losses (Credit) Balance at 3/31/19  Commercial and industrial $ 1,158 $ 54 $ 4 $ (61) $ 1,047  Commercial mortgages:  Multifamily 5,851 — — 584 6,435  Other 3,783 — — (266) 3,517  Owner-occupied 743 — — (58) 685  Residential mortgages:  Closed end 18,844 134 1 (640) 18,071  Revolving home equity 410 — — (8) 402  Consumer and other 49 — 1 (8) 42  $ 30,838 $ 188 $ 6 $ (457) $ 30,199     (in thousands) Balance at 1/1/18 Chargeoffs Recoveries Provision for Loan Losses (Credit) Balance at 3/31/18  Commercial and industrial $ 1,441 $ 74 $ — $ (103) $ 1,264  Commercial mortgages:  Multifamily 6,423 — — 346 6,769  Other 4,734 — — 46 4,780  Owner-occupied 1,076 — — (158) 918  Residential mortgages:  Closed end 19,347 20 1 1,338 20,666  Revolving home equity 689 49 — 42 682  Consumer and other 74 — — 1 75  $ 33,784 $ 143 $ 1 $ 1,512 $ 35,154 
Impaired Loans	   Three Months Ended  March 31, 2019 March 31, 2019  Unpaid Average Interest  Recorded Principal Related Recorded Income  (in thousands) Investment Balance Allowance Investment Recognized  With no related allowance recorded:  Commercial and industrial $ 15 $ 15 $ — $ 17 $ —  Commercial mortgages - owner-occupied 519 602 — 519 8  Residential mortgages:  Closed end 1,538 1,557 — 1,546 1  Revolving home equity 714 734 — 729 —  Consumer and other 296 296 — 312 —  With an allowance recorded:  Residential mortgages - closed end 154 154 15 155 2  Total:  Commercial and industrial 15 15 — 17 —  Commercial mortgages - owner-occupied 519 602 — 519 8  Residential mortgages:  Closed end 1,692 1,711 15 1,701 3  Revolving home equity 714 734 — 729 —  Consumer and other 296 296 — 312 —  $ 3,236 $ 3,358 $ 15 $ 3,278 $ 11        Three Months Ended  December 31, 2018 March 31, 2018  Unpaid Average Interest  Recorded Principal Related Recorded Income  (in thousands) Investment Balance Allowance Investment Recognized  With no related allowance recorded:  Commercial and industrial $ 22 $ 22 $ — $ 99 $ 1  Commercial mortgages - owner-occupied 520 604 — 552 6  Residential mortgages:  Closed end 1,561 1,573 — 1,141 1  Revolving home equity 743 747 — — —  Consumer and other 324 324 — 117 1  With an allowance recorded:  Residential mortgages - closed end 253 253 16 286 3  Total:  Commercial and industrial 22 22 — 99 1  Commercial mortgages - owner-occupied 520 604 — 552 6  Residential mortgages:  Closed end 1,814 1,826 16 1,427 4  Revolving home equity 743 747 — — —  Consumer and other 324 324 — 117 1  $ 3,423 $ 3,523 $ 16 $ 2,195 $ 12 
Aging Of The Recorded Investment In Loans	   March 31, 2019  Past Due Total Past  90 Days or Due Loans &  30-59 Days 60-89 Days More and Nonaccrual Nonaccrual Total  (in thousands) Past Due Past Due Still Accruing Loans Loans Current Loans  Commercial and industrial $ 445 $ — $ — $ — $ 445 $ 100,499 $ 100,944  Commercial mortgages:  Multifamily — — — — — 781,835 781,835  Other — — — — — 435,579 435,579  Owner-occupied 231 — — — 231 87,241 87,472  Residential mortgages:  Closed end 2,012 — — 1,372 3,384 1,773,948 1,777,332  Revolving home equity 96 249 — 714 1,059 64,990 66,049  Consumer and other — — — — — 5,107 5,107  $ 2,784 $ 249 $ — $ 2,086 $ 5,119 $ 3,249,199 $ 3,254,318   December 31, 2018  Commercial and industrial $ — $ 43 $ — $ — $ 43 $ 98,742 $ 98,785  Commercial mortgages:  Multifamily — — — — — 756,714 756,714  Other — — — — — 433,330 433,330  Owner-occupied — — — — — 91,251 91,251  Residential mortgages:  Closed end 864 — — 1,392 2,256 1,807,395 1,809,651  Revolving home equity — — — 743 743 66,967 67,710  Consumer and other 2 — — — 2 5,956 5,958  $ 866 $ 43 $ — $ 2,135 $ 3,044 $ 3,260,355 $ 3,263,399 
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.      March 31, 2019  Internally Assigned Risk Rating  Special  (in thousands) Pass Watch Mention Substandard Doubtful Total  Commercial and industrial $ 99,912 $ — $ 634 $ 398 $ — $ 100,944  Commercial mortgages:  Multifamily 781,835 — — — — 781,835  Other 435,579 — — — — 435,579  Owner-occupied 82,097 1,078 3,778 519 — 87,472  $ 1,399,423 $ 1,078 $ 4,412 $ 917 $ — $ 1,405,830   December 31, 2018  Commercial and industrial $ 97,684 $ — $ 667 $ 434 $ — $ 98,785  Commercial mortgages:  Multifamily 756,714 — — — — 756,714  Other 417,838 14,194 1,298 — — 433,330  Owner-occupied 85,710 1,090 3,911 540 — 91,251  $ 1,357,946 $ 15,284 $ 5,876 $ 974 $ — $ 1,380,080  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 by management as Watch, Special Mention, Substandard or Doubtful.      March 31, 2019  Internally Assigned Risk Rating  Special  (in thousands) Pass Watch Mention Substandard Doubtful Total  Residential mortgages:  Closed end $ 1,775,328 $ 312 $ — $ 1,692 $ — $ 1,777,332  Revolving home equity 65,088 — 247 714 — 66,049  Consumer and other 4,307 — — 296 — 4,603  $ 1,844,723 $ 312 $ 247 $ 2,702 $ — $ 1,847,984   December 31, 2018  Residential mortgages:  Closed end $ 1,807,525 $ 312 $ — $ 1,814 $ — $ 1,809,651  Revolving home equity 66,718 — 249 743 — 67,710  Consumer and other 4,958 — — 324 — 5,282  $ 1,879,201 $ 312 $ 249 $ 2,881 $ — $ 1,882,643 

Stock-based Compensation (Table

Stock-based Compensation (Tables)	3 Months Ended
	Mar. 31, 2019
Stock-based Compensation [Abstract]
Summary Of RSU Vested And Expected To Vest	   Granted During the Year Ended December 31,  Total 2019 2018 2017 2016  Number of RSUs:  Granted during the year 379,435 107,144 70,688 94,329 107,274  Outstanding at March 31, 2019 220,890 107,144 44,338 66,408 3,000   Scheduled to vest during:  2019 94,126 23,535 14,359 53,232 3,000  2020 54,414 35,706 8,782 9,926 —  2021 36,632 12,185 21,197 3,250 —  2022 35,718 35,718 — — —  220,890 107,144 44,338 66,408 3,000 
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, 2019 215,084 $ 23.79  Granted 107,144 19.48  Converted (101,338) 20.79  Outstanding at March 31, 2019 220,890 $ 23.08 1.41 $ 4,844  Vested and Convertible at March 31, 2019 — $ — — $ — 
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, 2019 96,112 $ 11.80  Exercised (19,656) 10.32  Forfeited or expired — —  Outstanding at March 31, 2019 76,456 $ 12.18 1.43 $ 745  Exercisable at March 31, 2019 76,156 $ 12.16 1.42 $ 744 

Defined Benefit Pension Plan (T

Defined Benefit Pension Plan (Tables)	3 Months Ended
	Mar. 31, 2019
Defined Benefit Pension Plan [Abstract]
Net Pension Costs	   Three Months Ended  March 31,  (in thousands) 2019 2018  Service cost $ 317 $ 342  Interest cost 446 397  Expected return on plan assets (750) (819)  Amortization of net actuarial loss 88 —  Net pension cost (credit) $ 101 $ (80) 

Fair Value Of Financial Instr_2

Fair Value Of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2019
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  (in thousands) Total (Level 1) (Level 2) (Level 3)  March 31, 2019:  Financial Assets:  Available-for-Sale Securities:  State and municipals $ 412,345 $ — $ 412,075 $ 270  Pass-through mortgage securities 66,559 — 66,559 —  Collateralized mortgage obligations 153,287 — 153,287 —  Corporate bonds 117,730 — 117,730 —  $ 749,921 $ — $ 749,651 $ 270  Financial Liabilities:  Derivative - interest rate swaps $ 2,675 $ — $ 2,675 $ —   December 31, 2018:  Financial Assets:  Available-for-Sale Securities:  State and municipals $ 420,038 $ — $ 420,038 $ —  Pass-through mortgage securities 65,486 — 65,486 —  Collateralized mortgage obligations 154,901 — 154,901 —  Corporate bonds 117,590 — 117,590 —  $ 758,015 $ — $ 758,015 $ —  Financial Liabilities:  Derivative - interest rate swaps $ 1,130 $ — $ 1,130 $ — 
Financial Instruments	   Level of March 31, 2019 December 31, 2018  Fair Value Carrying Carrying  (in thousands) Hierarchy Amount Fair Value Amount Fair Value  Financial Assets:  Cash and cash equivalents Level 1 $ 44,017 $ 44,017 $ 47,358 $ 47,358  Held-to-maturity securities Level 2 2,402 2,450 2,445 2,493  Held-to-maturity securities Level 3 2,722 2,722 3,059 3,059  Loans Level 3 3,224,119 3,107,542 3,232,561 3,079,946  Restricted stock Level 1 29,411 29,411 40,686 40,686   Financial Liabilities:  Checking deposits Level 1 925,141 925,141 935,574 935,574  Savings, NOW and money market deposits Level 1 1,699,996 1,699,996 1,590,341 1,590,341  Time deposits Level 2 682,072 680,348 559,057 553,900  Short-term borrowings Level 1 135,176 135,176 388,923 388,923  Long-term debt Level 2 366,472 362,368 362,027 354,651 

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Components Of Lease Cost	   (in thousands)  Operating lease cost $ 642  Variable lease cost 135  Short-term lease cost 2  $ 779 
Maturity Analysis For Operating Lease Liability	   (dollars in thousands)  12 months ended March 31, 2020 $ 2,531  2021 2,446  2022 2,382  2023 2,285  2024 1,979  Thereafter 6,438  Total lease payments 18,061  Less: interest 2,062  Present value of lease payments $ 15,999 

Derivatives (Tables)

Derivatives (Tables) - Cash Flow Hedging [Member]	3 Months Ended
	Mar. 31, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Schedule Of Interest Rate Swaps	   March 31, 2019 December 31, 2018  Notional amount $200 million $150 million  Weighted average fixed pay rate 2.83% 2.90%  Weighted average 3-month LIBOR receive rate 2.70% 2.38%  Weighted average maturity 2.81 Years 2.43 Years 
Schedule Of Gains (Losses) Recorded In Accumulated Other Comprehensive Income And The Consolidated Statements Of Income	   Amount of Loss  Amount of Loss Amount of Loss Recognized in Other  Recognized in OCI Reclassified from OCI Noninterest Income  (in thousands) (Effective Portion) to Interest Expense (Ineffective Portion)  Interest rate contract:  Three months ended March 31, 2019 $ 1,614 $ 69 $ — 
Schedule Of Cash Flow Hedges Included In the Consolidated Balance Sheets	   March 31, 2019 December 31, 2018  Notional Fair Value Notional Fair Value  (in thousands) Amount Asset Liability Amount Asset Liability  Included in other liabilities $ — $ 2,675 $ — $ 1,130  Interest rate swap hedging FHLB advances $ 50,000 $ 150,000  Interest rate swap hedging brokered  certificates of deposit $ 150,000 $ —  

Basis of Presentation (Narrativ

Basis of Presentation (Narrative) (Details)	Mar. 31, 2019item
Bank [Member]
Number of subsidiaries	2

Earnings Per Share (Calculation

Earnings Per Share (Calculation Of Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Net income		$ 10,841	$ 11,111
Income allocated to participating securities	[1]		37
Income allocated to common stockholders		$ 10,841	$ 11,074
Common shares		25,284,357	24,962,520
Dilutive stock options and restricted stock units	[1]	156,204	204,345
Total		25,440,561	25,166,865
Basic		$ 0.43	$ 0.44
Diluted		$ 0.43	$ 0.44
[1]	Restricted stock units ("RSUs") awarded in 2016 accrued 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 were considered to participate with common stock in the earnings of the Corporation and, therefore, the Corporation calculated basic and diluted EPS using the two-class method. Substantially all of the RSUs awarded in 2016 vested on December 31, 2018. As a result, beginning in 2019, the Corporation calculates basic and dilutive EPS

Comprehensive Income (Component

Comprehensive Income (Components Of Other Comprehensive Income And Related Tax Effects) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Change in net unrealized holding gains (losses) on available-for-sale securities:
Change arising during the period		$ 8,417	$ (11,734)
Tax effect		2,536	(3,548)
Total		5,881	(8,186)
Change in funded status of pension plan:
Amortization of net actuarial loss included in net income	[1]	88
Tax effect		27
Total		61
Change in unrealized loss on derivative instrument:
Amount of loss recognized during the period		(1,614)
Reclassification adjustment for net interest expense included in net income	[2]	69
Change in unrealized loss on derivative instruments		(1,545)
Tax effect		(465)
Total		(1,080)
Other comprehensive income (loss)		$ 4,862	$ (8,186)
[1]	Represents the amortization of net actuarial loss relating to the Corporation's defined benefit pension plan. This item is a component of net periodic pension cost (see "Note 7 - Defined Benefit Pension Plan") and included in the consolidated statements of income in the line item, "Other noninterest income."
[2]	Represents the net interest expense recorded on derivative transactions and included in the consolidated statements of income under "Interest expense."

Comprehensive Income (Compone_2

Comprehensive Income (Components Of Accumulated Other Comprehensive Income (Loss), Net Of Tax) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 388,187	$ 354,450
Current Period Change	4,862	(8,186)
Balance	386,442	361,446
Unrealized Holding Gains (Losses) On Available-For-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(2,955)
Current Period Change	5,881
Balance	2,926
Unrealized Actuarial Losses On Pension Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(5,696)
Current Period Change	61
Balance	(5,635)
Unrealized Loss On Derivative Instrument [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(789)
Current Period Change	(1,080)
Balance	(1,869)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(9,440)	546
Current Period Change	4,862	(8,186)
Adoption of ASU 2018-02		(277)
Balance	$ (4,578)	$ (7,917)

Investment Securities (Narrativ

Investment Securities (Narrative) (Details)	3 Months Ended
	Mar. 31, 2019USD ($)itemsecurity	Mar. 31, 2018security	Dec. 31, 2018USD ($)item
Investment Securities [Line Items]
Held-to-maturity securities, Number of sales	0	0
Available-for-Sale Securities, Number of sales	0	0
Restricted investment securities | $	$ 391,614,000		$ 342,712,000
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

Investment Securities (Amortiza

Investment Securities (Amortization Cost And Estimated Fair Value Of Investment Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Schedule Of Amortized Cost And Estimated Fair Values [Line Items]
Held-to-Maturity Securities, Amortized Cost	$ 5,124	$ 5,504
Held-to-Maturity Securities, Gross Unrealized Gains	48	48
Held-to-Maturity Securities, Fair Value	5,172	5,552
Available-for-Sale Securities, Amortized Cost	745,733	762,244
Available-for-Sale Securities, Gross Unrealized Gains	7,971	4,130
Available-for-Sale Securities, Gross Unrealized Losses	(3,783)	(8,359)
Available-for-Sale Securities, Fair value	749,921	758,015
Corporate Bonds [Member]
Schedule Of Amortized Cost And Estimated Fair Values [Line Items]
Available-for-Sale Securities, Amortized Cost	119,000	119,000
Available-for-Sale Securities, Gross Unrealized Losses	(1,270)	(1,410)
Available-for-Sale Securities, Fair value	117,730	117,590
State And Municipals [Member]
Schedule Of Amortized Cost And Estimated Fair Values [Line Items]
Held-to-Maturity Securities, Amortized Cost	4,809	5,142
Held-to-Maturity Securities, Gross Unrealized Gains	35	36
Held-to-Maturity Securities, Fair Value	4,844	5,178
Available-for-Sale Securities, Amortized Cost	408,205	422,235
Available-for-Sale Securities, Gross Unrealized Gains	5,932	3,220
Available-for-Sale Securities, Gross Unrealized Losses	(1,792)	(5,417)
Available-for-Sale Securities, Fair value	412,345	420,038
Pass-Through Mortgage Securities [Member]
Schedule Of Amortized Cost And Estimated Fair Values [Line Items]
Held-to-Maturity Securities, Amortized Cost	260	267
Held-to-Maturity Securities, Gross Unrealized Gains	13	11
Held-to-Maturity Securities, Fair Value	273	278
Available-for-Sale Securities, Amortized Cost	66,833	66,631
Available-for-Sale Securities, Gross Unrealized Gains	284	24
Available-for-Sale Securities, Gross Unrealized Losses	(558)	(1,169)
Available-for-Sale Securities, Fair value	66,559	65,486
Collateralized Mortgage Obligations [Member]
Schedule Of Amortized Cost And Estimated Fair Values [Line Items]
Held-to-Maturity Securities, Amortized Cost	55	95
Held-to-Maturity Securities, Gross Unrealized Gains		1
Held-to-Maturity Securities, Fair Value	55	96
Available-for-Sale Securities, Amortized Cost	151,695	154,378
Available-for-Sale Securities, Gross Unrealized Gains	1,755	886
Available-for-Sale Securities, Gross Unrealized Losses	(163)	(363)
Available-for-Sale Securities, Fair value	$ 153,287	$ 154,901

Investment Securities (Securiti

Investment Securities (Securities With A Continuous Unrealized Losses Position) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	$ 117,730	$ 271,470
Less than 12 months, Unrealized Loss	(1,270)	(3,280)
12 months or more, Fair Value	95,781	93,762
12 months or more, Unrealized Loss	(2,513)	(5,079)
Total, Fair Value	213,511	365,232
Total, Unrealized Loss	(3,783)	(8,359)
State And Municipals [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value		102,882
Less than 12 months, Unrealized Loss		(1,639)
12 months or more, Fair Value	60,339	62,995
12 months or more, Unrealized Loss	(1,792)	(3,778)
Total, Fair Value	60,339	165,877
Total, Unrealized Loss	(1,792)	(5,417)
Pass-Through Mortgage Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value		38,421
Less than 12 months, Unrealized Loss		(142)
12 months or more, Fair Value	28,282	23,425
12 months or more, Unrealized Loss	(558)	(1,027)
Total, Fair Value	28,282	61,846
Total, Unrealized Loss	(558)	(1,169)
Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value		32,577
Less than 12 months, Unrealized Loss		(89)
12 months or more, Fair Value	7,160	7,342
12 months or more, Unrealized Loss	(163)	(274)
Total, Fair Value	7,160	39,919
Total, Unrealized Loss	(163)	(363)
Corporate Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	117,730	97,590
Less than 12 months, Unrealized Loss	(1,270)	(1,410)
Total, Fair Value	117,730	97,590
Total, Unrealized Loss	$ (1,270)	$ (1,410)

Investment Securities (Maturiti

Investment Securities (Maturities) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Held-to-Maturity Securities:
Held-to-maturity securities, Amortized Cost, Within one year	$ 3,241
Held-to-maturity securities, Fair Value, Within one year	3,243
Held-to-maturity securities, Amortized Cost, After 1 through 5 years	1,568
Held-to-maturity securities, Fair Value, After 1 through 5 years	1,601
Held-to-maturity securities, Amortized Cost, Mortgage-backed securities	315
Held-to-maturity securities, Fair Value, Mortgage-backed securities	328
Held-to-maturity securities, Amortized Cost	5,124	$ 5,504
Held-to-maturity securities, Fair Value	5,172	5,552
Available-for-Sale Securities:
Available-for-sale securities, Amortized Cost, Within one year	38,917
Available-for-sale securities, Fair Value, Within one year	39,170
Available-for-sale securities, Amortized Cost, After 1 through 5 years	41,470
Available-for-sale securities, Fair Value, After 1 through 5 years	41,908
Available-for-sale securities, Amortized Cost, After 5 through 10 years	290,124
Available-for-sale securities, Fair Value, After 5 through 10 years	291,350
Available-for-sale securities, Amortized Cost, After 10 years	156,694
Available-for-sale securities, Fair Value, After 10 years	157,647
Available-for-sale securities, Amortized Cost, Mortgage-backed securities	218,528
Available-for-sale securities, Fair Value, Mortgage-backed securities	219,846
Available-for-sale securities, Amortized Cost	745,733
Available-for-sale securities, Fair Value	$ 749,921	$ 758,015

Loans (Narrative) (Details)

Loans (Narrative) (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2019USD ($)contractloanitem	Mar. 31, 2018USD ($)contractloan	Dec. 31, 2018USD ($)loanitem
Financing Receivable, Recorded Investment, Past Due [Line Items]
Allowance for loan losses, TDR	$ 15,000		$ 16,000
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			80.00%
Deposit liabilities reclassified as loans receivable	$ 504,000		$ 676,000
Number of contracts with payment default | contract	0	0
Number of commitments to lend | item	0		0
Number of loans in the process of foreclosure | loan	0		0
Number of loans modified | loan	0	1
Residential Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Real estate acquired through foreclosure	$ 0		$ 0
Number of loans modified | loan		2
Post modification balance		$ 350,000

Loans (Loans Individually And C

Loans (Loans Individually And Collectively Evaluated For Impairment) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment - Loans	$ 3,236	$ 3,423
Collectively Evaluated for Impairment - Loans	3,251,082	3,259,976
Total Loans	3,254,318	3,263,399
Individually Evaluated for Impairment - Allowance for Loan Losses	15	16
Collectively Evaluated for Impairment - Allowance for Loan Losses	30,184	30,822
Ending balance, allowance	30,199	30,838	$ 35,154	$ 33,784
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment - Loans	15	22
Collectively Evaluated for Impairment - Loans	100,929	98,763
Total Loans	100,944	98,785
Collectively Evaluated for Impairment - Allowance for Loan Losses	1,047	1,158
Ending balance, allowance	1,047	1,158	1,264	1,441
Commercial Mortgages [Member] | Multifamily Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively Evaluated for Impairment - Loans	781,835	756,714
Total Loans	781,835	756,714
Collectively Evaluated for Impairment - Allowance for Loan Losses	6,435	5,851
Ending balance, allowance	6,435	5,851	6,769	6,423
Commercial Mortgages [Member] | Other Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively Evaluated for Impairment - Loans	435,579	433,330
Total Loans	435,579	433,330
Collectively Evaluated for Impairment - Allowance for Loan Losses	3,517	3,783
Ending balance, allowance	3,517	3,783	4,780	4,734
Commercial Mortgages [Member] | Owner-occupied Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment - Loans	519	520
Collectively Evaluated for Impairment - Loans	86,953	90,731
Total Loans	87,472	91,251
Collectively Evaluated for Impairment - Allowance for Loan Losses	685	743
Ending balance, allowance	685	743	918	1,076
Residential Mortgages [Member] | Closed-end [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment - Loans	1,692	1,814
Collectively Evaluated for Impairment - Loans	1,775,640	1,807,837
Total Loans	1,777,332	1,809,651
Individually Evaluated for Impairment - Allowance for Loan Losses	15	16
Collectively Evaluated for Impairment - Allowance for Loan Losses	18,056	18,828
Ending balance, allowance	18,071	18,844	20,666	19,347
Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment - Loans	714	743
Collectively Evaluated for Impairment - Loans	65,335	66,967
Total Loans	66,049	67,710
Collectively Evaluated for Impairment - Allowance for Loan Losses	402	410
Ending balance, allowance	402	410	682	689
Consumer And Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment - Loans	296	324
Collectively Evaluated for Impairment - Loans	4,811	5,634
Total Loans	5,107	5,958
Collectively Evaluated for Impairment - Allowance for Loan Losses	42	49
Ending balance, allowance	$ 42	$ 49	$ 75	$ 74

Loans (Allowance For Loan Losse

Loans (Allowance For Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	$ 30,838	$ 33,784
Chargeoffs	188	143
Recoveries	6	1
Provision for Loan Losses (Credit)	(457)	1,512
Allowance for loan losses, ending balance	30,199	35,154
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	1,158	1,441
Chargeoffs	54	74
Recoveries	4
Provision for Loan Losses (Credit)	(61)	(103)
Allowance for loan losses, ending balance	1,047	1,264
Commercial Mortgages [Member] | Multifamily Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	5,851	6,423
Provision for Loan Losses (Credit)	584	346
Allowance for loan losses, ending balance	6,435	6,769
Commercial Mortgages [Member] | Other Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	3,783	4,734
Provision for Loan Losses (Credit)	(266)	46
Allowance for loan losses, ending balance	3,517	4,780
Commercial Mortgages [Member] | Owner-occupied Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	743	1,076
Provision for Loan Losses (Credit)	(58)	(158)
Allowance for loan losses, ending balance	685	918
Residential Mortgages [Member] | Closed-end [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	18,844	19,347
Chargeoffs	134	20
Recoveries	1	1
Provision for Loan Losses (Credit)	(640)	1,338
Allowance for loan losses, ending balance	18,071	20,666
Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	410	689
Chargeoffs		49
Provision for Loan Losses (Credit)	(8)	42
Allowance for loan losses, ending balance	402	682
Consumer And Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	49	74
Recoveries	1
Provision for Loan Losses (Credit)	(8)	1
Allowance for loan losses, ending balance	$ 42	$ 75

Loans (Impaired Loans) (Details

Loans (Impaired Loans) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Related Allowance	$ 15		$ 16
Total, recorded investment	3,236		3,423
Total, unpaid principal balance	3,358		3,523
Total, average recorded investment	3,278	$ 2,195
Total, interest income recognized	11	12
Commercial And Industrial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance recorded	15		22
Unpaid principal balance with no related allowance recorded	15		22
Average recorded investment with no related allowance recorded	17	99
Interest income recognized with no related allowance recorded		1
Total, recorded investment	15		22
Total, unpaid principal balance	15		22
Total, average recorded investment	17	99
Total, interest income recognized		1
Commercial Mortgages [Member] | Owner-occupied Loan [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance recorded	519		520
Unpaid principal balance with no related allowance recorded	602		604
Average recorded investment with no related allowance recorded	519	552
Interest income recognized with no related allowance recorded	8	6
Total, recorded investment	519		520
Total, unpaid principal balance	602		604
Total, average recorded investment	519	552
Total, interest income recognized	8	6
Residential Mortgages [Member] | Closed-end [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance recorded	1,538		1,561
Unpaid principal balance with no related allowance recorded	1,557		1,573
Related Allowance	15		16
Average recorded investment with no related allowance recorded	1,546	1,141
Interest income recognized with no related allowance recorded	1	1
Recorded investment with an allowance recorded	154		253
Unpaid principal balance with an allowance recorded	154		253
Average recorded investment with an allowance recorded	155	286
Interest income recognized with an allowance recorded	2	3
Total, recorded investment	1,692		1,814
Total, unpaid principal balance	1,711		1,826
Total, average recorded investment	1,701	1,427
Total, interest income recognized	3	4
Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance recorded	714		743
Unpaid principal balance with no related allowance recorded	734		747
Average recorded investment with no related allowance recorded	729
Total, recorded investment	714		743
Total, unpaid principal balance	734		747
Total, average recorded investment	729
Consumer And Other [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance recorded	296		324
Unpaid principal balance with no related allowance recorded	296		324
Average recorded investment with no related allowance recorded	312	117
Interest income recognized with no related allowance recorded		1
Total, recorded investment	296		324
Total, unpaid principal balance	296		$ 324
Total, average recorded investment	$ 312	117
Total, interest income recognized		$ 1

Loans (Aging Of The Recorded In

Loans (Aging Of The Recorded Investment In Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	$ 2,086	$ 2,135
Total past due loans & nonaccrual loans	5,119	3,044
Current	3,249,199	3,260,355
Loans	3,254,318	3,263,399
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due loans & nonaccrual loans	445	43
Current	100,499	98,742
Loans	100,944	98,785
Commercial Mortgages [Member] | Multifamily Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	781,835	756,714
Loans	781,835	756,714
Commercial Mortgages [Member] | Other Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	435,579	433,330
Loans	435,579	433,330
Commercial Mortgages [Member] | Owner-occupied Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due loans & nonaccrual loans	231
Current	87,241	91,251
Loans	87,472	91,251
Residential Mortgages [Member] | Closed-end [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	1,372	1,392
Total past due loans & nonaccrual loans	3,384	2,256
Current	1,773,948	1,807,395
Loans	1,777,332	1,809,651
Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	714	743
Total past due loans & nonaccrual loans	1,059	743
Current	64,990	66,967
Loans	66,049	67,710
Consumer And Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due loans & nonaccrual loans		2
Current	5,107	5,956
Loans	5,107	5,958
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	2,784	866
30 to 59 Days Past Due [Member] | Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	445
30 to 59 Days Past Due [Member] | Commercial Mortgages [Member] | Owner-occupied Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	231
30 to 59 Days Past Due [Member] | Residential Mortgages [Member] | Closed-end [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	2,012	864
30 to 59 Days Past Due [Member] | Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	96
30 to 59 Days Past Due [Member] | Consumer And Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due		2
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	249	43
60 to 89 Days Past Due [Member] | Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due		$ 43
60 to 89 Days Past Due [Member] | Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	$ 249

Loans (Risk Ratings) (Details)

Loans (Risk Ratings) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 3,254,318	$ 3,263,399
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	100,944	98,785
Commercial And Industrial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	99,912	97,684
Commercial And Industrial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	634	667
Commercial And Industrial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	398	434
Commercial And Industrial [Member] | Internal Investment Grade [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	100,944	98,785
Residential Mortgages [Member] | Closed-end [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,777,332	1,809,651
Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	66,049	67,710
Residential Mortgages [Member] | Pass [Member] | Closed-end [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,775,328	1,807,525
Residential Mortgages [Member] | Pass [Member] | Revolving Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	65,088	66,718
Residential Mortgages [Member] | Watch [Member] | Closed-end [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	312	312
Residential Mortgages [Member] | Special Mention [Member] | Revolving Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	247	249
Residential Mortgages [Member] | Substandard [Member] | Closed-end [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,692	1,814
Residential Mortgages [Member] | Substandard [Member] | Revolving Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	714	743
Residential Mortgages [Member] | Internal Investment Grade [Member] | Closed-end [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,777,332	1,809,651
Residential Mortgages [Member] | Internal Investment Grade [Member] | Revolving Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	66,049	67,710
Commercial Mortgages [Member] | Multifamily Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	781,835	756,714
Commercial Mortgages [Member] | Other Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	435,579	433,330
Commercial Mortgages [Member] | Owner-occupied Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	87,472	91,251
Commercial Mortgages [Member] | Pass [Member] | Multifamily Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	781,835	756,714
Commercial Mortgages [Member] | Pass [Member] | Other Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	435,579	417,838
Commercial Mortgages [Member] | Pass [Member] | Owner-occupied Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	82,097	85,710
Commercial Mortgages [Member] | Watch [Member] | Other Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans		14,194
Commercial Mortgages [Member] | Watch [Member] | Owner-occupied Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,078	1,090
Commercial Mortgages [Member] | Special Mention [Member] | Other Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans		1,298
Commercial Mortgages [Member] | Special Mention [Member] | Owner-occupied Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	3,778	3,911
Commercial Mortgages [Member] | Substandard [Member] | Owner-occupied Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	519	540
Commercial Mortgages [Member] | Internal Investment Grade [Member] | Multifamily Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	781,835	756,714
Commercial Mortgages [Member] | Internal Investment Grade [Member] | Other Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	435,579	433,330
Commercial Mortgages [Member] | Internal Investment Grade [Member] | Owner-occupied Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	87,472	91,251
Consumer And Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	5,107	5,958
Consumer And Other [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	4,307	4,958
Consumer And Other [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	296	324
Consumer And Other [Member] | Internal Investment Grade [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	4,603	5,282
Residential Mortgages, Home Equity Lines, And Other Consumer Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,844,723	1,879,201
Residential Mortgages, Home Equity Lines, And Other Consumer Loans [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	312	312
Residential Mortgages, Home Equity Lines, And Other Consumer Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	247	249
Residential Mortgages, Home Equity Lines, And Other Consumer Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,702	2,881
Residential Mortgages, Home Equity Lines, And Other Consumer Loans [Member] | Internal Investment Grade [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,847,984	1,882,643
Commercial And Industrial Loans And Commercial Real Estate Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,399,423	1,357,946
Commercial And Industrial Loans And Commercial Real Estate Loans [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,078	15,284
Commercial And Industrial Loans And Commercial Real Estate Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	4,412	5,876
Commercial And Industrial Loans And Commercial Real Estate Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	917	974
Commercial And Industrial Loans And Commercial Real Estate Loans [Member] | Internal Investment Grade [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 1,405,830	$ 1,380,080

Stock-based Compensation (Narra

Stock-based Compensation (Narrative) (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2019USD ($)shares	Mar. 31, 2018USD ($)shares	Dec. 31, 2018	Dec. 31, 2017	Apr. 22, 2014shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense for share-based payments	$ 1,295,000	$ 1,128,000
Income tax benefits	390,000	340,000
Intrinsic value	203,000	205,000
Unrecognized compensation cost	$ 1,797,000
Weighted average period expected to be recognized	1 year 3 months 18 days
Proceeds from exercise of stock options	$ 203,000	96,000
Tax benefit from stock option exercised	$ 61,000	$ 62,000
Board Of Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued for services | shares	1,462	557
RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of RSUs converted	$ 2,107,000	$ 2,884,000
Unrecognized compensation cost	$ 1,796,000
Weighted average period expected to be recognized	1 year 3 months 18 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	1.50		1.50	1.25
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 1,000
Weighted average period expected to be recognized	1 year 2 months 12 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 | shares	2,250,000
Number of shares available for issuance | shares	1,751,778
Equity Incentive Plan 2014 [Member] | RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance | shares	298,633
Equity Incentive Plan 2014 [Member] | RSUs [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized | shares	787,500
Compensation Plan 2006 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized | shares					0
Compensation Plan 2006 [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	5 years
Award expiration period	10 years

Stock-based Compensation (Summa

Stock-based Compensation (Summary Of RSU Vested And Expected To Vest) (Details) - RSUs [Member] - shares	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of RSU granted	107,144
Number of RSUs outstanding	220,890	215,084
Equity Incentive Plan 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of RSU granted	379,435
Number of RSUs outstanding	220,890
Total RSUs Outstanding	220,890
Equity Incentive Plan 2014 [Member] | December 31, 2019 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSUs Outstanding	94,126
Equity Incentive Plan 2014 [Member] | December 31, 2020 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSUs Outstanding	54,414
Equity Incentive Plan 2014 [Member] | December 31, 2021[Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSUs Outstanding	36,632
Equity Incentive Plan 2014 [Member] | December 31, 2022 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSUs Outstanding	35,718
Equity Incentive Plan 2014 [Member] | 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of RSU granted	107,274
Number of RSUs outstanding	3,000
Total RSUs Outstanding	3,000
Equity Incentive Plan 2014 [Member] | 2016 [Member] | December 31, 2019 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSUs Outstanding	3,000
Equity Incentive Plan 2014 [Member] | 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of RSU granted	94,329
Number of RSUs outstanding	66,408
Total RSUs Outstanding	66,408
Equity Incentive Plan 2014 [Member] | 2017 [Member] | December 31, 2019 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSUs Outstanding	53,232
Equity Incentive Plan 2014 [Member] | 2017 [Member] | December 31, 2020 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSUs Outstanding	9,926
Equity Incentive Plan 2014 [Member] | 2017 [Member] | December 31, 2021[Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSUs Outstanding	3,250
Equity Incentive Plan 2014 [Member] | 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of RSU granted	70,688
Number of RSUs outstanding	44,338
Total RSUs Outstanding	44,338
Equity Incentive Plan 2014 [Member] | 2018 [Member] | December 31, 2019 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSUs Outstanding	14,359
Equity Incentive Plan 2014 [Member] | 2018 [Member] | December 31, 2020 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSUs Outstanding	8,782
Equity Incentive Plan 2014 [Member] | 2018 [Member] | December 31, 2021[Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSUs Outstanding	21,197
Equity Incentive Plan 2014 [Member] | 2019 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of RSU granted	107,144
Number of RSUs outstanding	107,144
Total RSUs Outstanding	107,144
Equity Incentive Plan 2014 [Member] | 2019 [Member] | December 31, 2019 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSUs Outstanding	23,535
Equity Incentive Plan 2014 [Member] | 2019 [Member] | December 31, 2020 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSUs Outstanding	35,706
Equity Incentive Plan 2014 [Member] | 2019 [Member] | December 31, 2021[Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSUs Outstanding	12,185
Equity Incentive Plan 2014 [Member] | 2019 [Member] | December 31, 2022 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total RSUs Outstanding	35,718

Stock-based Compensation (RSU A

Stock-based Compensation (RSU Activity) (Details) - RSUs [Member] $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, Number of RSUs | shares	215,084
Outstanding, Weighted-Average Grant-Date Fair Value | $ / shares	$ 23.79
Granted, Number of RSUs | shares	107,144
Granted, Weighted-Average Grant-Date Fair Value | $ / shares	$ 19.48
Converted, Number of RSUs | shares	(101,338)
Converted, Weighted-Average Grant-Date Fair Value | $ / shares	$ 20.79
Outstanding, Number of RSUs | shares	220,890
Outstanding, Weighted-Average Grant-Date Fair Value | $ / shares	$ 23.08
Outstanding, Weighted Average Remaining Contractual Term	1 year 4 months 28 days
Outstanding, Aggregate Intrinsic Value | $	$ 4,844
Number of RSUs vested and convertible | shares
Vested and Convertible, Weighted-Average Grant-Date Fair Value | $ / shares
Vested and Convertible, Aggregate Intrinsic Value | $

Stock-based Compensation (Stock

Stock-based Compensation (Stock Option Activity) (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)$ / sharesshares
Stock-based Compensation [Abstract]
Outstanding, Number of Options | shares	96,112
Outstanding, Weighted-Average Exercise Price | $ / shares	$ 11.80
Exercised, Number of Options | shares	(19,656)
Exercised, Weighted-Average Exercise Price | $ / shares	$ 10.32
Forfeited or expired, Number of Options | shares
Forfeited or expired, Weighted-Average Exercise Price | $ / shares
Outstanding, Number of Options | shares	76,456
Outstanding, Weighted-Average Exercise Price | $ / shares	$ 12.18
Outstanding, Weighted-Average Remaining Contractual Term	1 year 5 months 5 days
Outstanding, Aggregate Intrinsic Value | $	$ 745
Exercisable, Number of Options | shares	76,156
Exercisable, Weighted-Average Exercise Price | $ / shares	$ 12.16
Exercisable, Weighted-Average Remaining Contractual Term	1 year 5 months 1 day
Exercisable, Aggregate Intrinsic Value | $	$ 744

Defined Benefit Pension Plan (N

Defined Benefit Pension Plan (Narrative) (Details) - Pension Plan [Member] - USD ($)	3 Months Ended
	Mar. 31, 2019	Jan. 01, 2019
Defined Benefit Plan Disclosure [Line Items]
Estimated minimum pension contribution	$ 0
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions from employer		$ 7,700,000

Defined Benefit Pension Plan _2

Defined Benefit Pension Plan (Net Pension Costs) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Defined Benefit Pension Plan [Abstract]
Service cost	$ 317	$ 342
Interest cost	446	397
Expected return on plan assets	(750)	(819)
Amortization of net actuarial loss	88
Net pension cost (credit)	$ 101	$ (80)

Fair Value Of Financial Instr_3

Fair Value Of Financial Instruments (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value, Transfers between levels	$ 0	$ 0
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	$ 0		$ 0

Fair Value Of Financial Instr_4

Fair Value Of Financial Instruments (Assets Measured On Recurring Basis) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	$ 749,921	$ 758,015
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	749,921	758,015
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	749,651	758,015
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	270
Corporate Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	117,730	117,590
Corporate Bonds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	117,730	117,590
Corporate Bonds [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	117,730	117,590
State And Municipals [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	412,345	420,038
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	412,345	420,038
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	412,075	420,038
State And Municipals [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	270
Pass-Through Mortgage Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	66,559	65,486
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	66,559	65,486
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	66,559	65,486
Collateralized Mortgage Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	153,287	154,901
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	153,287	154,901
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	153,287	154,901
Interest Rate Swaps [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative	2,675	1,130
Interest Rate Swaps [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative	$ 2,675	$ 1,130

Fair Value Of Financial Instr_5

Fair Value Of Financial Instruments (Financial Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financial Assets:
Held-to-maturity securities	$ 5,172	$ 5,552
Restricted stock	29,411	40,686
Financial Liabilities:
Checking deposits	925,141	935,574
Savings, NOW and money market deposits	1,699,996	1,590,341
Carrying Amount [Member] | Level 1 [Member]
Financial Assets:
Cash and cash equivalents	44,017	47,358
Restricted stock	29,411	40,686
Financial Liabilities:
Checking deposits	925,141	935,574
Savings, NOW and money market deposits	1,699,996	1,590,341
Short-term borrowings	135,176	388,923
Carrying Amount [Member] | Level 2 [Member]
Financial Assets:
Held-to-maturity securities	2,402	2,445
Financial Liabilities:
Time deposits	682,072	559,057
Long-term debt	366,472	362,027
Carrying Amount [Member] | Level 3 [Member]
Financial Assets:
Held-to-maturity securities	2,722	3,059
Loans	3,224,119	3,232,561
Fair Value [Member] | Level 1 [Member]
Financial Assets:
Cash and cash equivalents	44,017	47,358
Restricted stock	29,411	40,686
Financial Liabilities:
Checking deposits	925,141	935,574
Savings, NOW and money market deposits	1,699,996	1,590,341
Short-term borrowings	135,176	388,923
Fair Value [Member] | Level 2 [Member]
Financial Assets:
Held-to-maturity securities	2,450	2,493
Financial Liabilities:
Time deposits	680,348	553,900
Long-term debt	362,368	354,651
Fair Value [Member] | Level 3 [Member]
Financial Assets:
Held-to-maturity securities	2,722	3,059
Loans	$ 3,107,542	$ 3,079,946

Leases (Narrative) (Details)

Leases (Narrative) (Details)	3 Months Ended
	Mar. 31, 2019USD ($)item
Renewal term	10 years
Weighted-average remaining lease term	7 years 9 months
Weighted-average discount rate	3.10%
Operating lease liability	$ 15,999,000
Related Party Leases [Member]
Number of buildings occupied and leased from related party | item	2
Operating lease liability	$ 155,000

Leases (Components Of Lease Cos

Leases (Components Of Lease Cost) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Leases [Abstract]
Operating lease cost	$ 642
Variable lease cost	135
Short-term lease cost	2
Total lease expense	$ 779

Leases (Maturity Analysis For O

Leases (Maturity Analysis For Operating Lease Liability) (Details) $ in Thousands	Mar. 31, 2019USD ($)
Leases [Abstract]
2020	$ 2,531
2021	2,446
2022	2,382
2023	2,285
2024	1,979
Thereafter	6,438
Total lease payments	18,061
Interest	2,062
Present value of lease liabilities	$ 15,999

Revenue From Contracts With C_2

Revenue From Contracts With Customers (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenue From Contracts With Customers [Abstract]
Revenue	$ 493,000	$ 455,000

Derivatives (Narrative) (Detail

Derivatives (Narrative) (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2020	Jan. 17, 2019	Dec. 31, 2018	May 22, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 11,143,000	$ 7,148,000
Collateral posted	2,700,000
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Gain (Loss), Cash Flow Hedge [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	69,000
Scenario, Forecast [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Gain (Loss), Cash Flow Hedge [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense			$ 667,000
FHLB [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	69,000
Cash Flow Hedging [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Notional amount	$ 200,000,000			$ 50,000,000	$ 150,000,000	$ 150,000,000

Derivatives (Schedule Of Intere

Derivatives (Schedule Of Interest Rate Swaps) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Jan. 17, 2019	May 22, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Weighted average maturity		2 years 5 months 5 days
Cash Flow Hedging [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 200	$ 150	$ 50	$ 150
Weighted average fixed pay rate	2.83%	2.90%
Weighted average 3-month LIBOR receive rate	2.70%	2.38%
Weighted average maturity	2 years 9 months 22 days

Derivatives (Schedule Of Gains

Derivatives (Schedule Of Gains (Losses) Recorded In Accumulated Other Comprehensive Income And The Consolidated Statements Of Income) (Details) - Cash Flow Hedging [Member] - Interest Rate Contract [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Recognized in OCI (Effective Portion)	$ 1,614
Amount of Loss Reclassified from OCI to Interest Expense	$ 69

Derivatives (Schedule Of Cash F

Derivatives (Schedule Of Cash Flow Hedges Included In the Consolidated Balance Sheets) (Details) - Cash Flow Hedging [Member] - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 17, 2019	Dec. 31, 2018	May 22, 2018
Derivatives, Fair Value [Line Items]
Notional amount	$ 200,000	$ 50,000	$ 150,000	$ 150,000
Interest Rate Swaps [Member] | FHLB [Member]
Derivatives, Fair Value [Line Items]
Notional amount	50,000		150,000
Interest Rate Swaps [Member] | Brokered Certificates of Deposit [Member]
Derivatives, Fair Value [Line Items]
Notional amount	150,000
Interest Rate Swaps [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair Value Liability	$ 2,675		$ 1,130

Adoption Of New Accounting St_2

Adoption Of New Accounting Standards (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right of use asset - operating leases	$ 15,191
Operating lease liability	$ 15,999
Accounting Standards Update 2018-11 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right of use asset - operating leases		$ 15,700
Operating lease liability		$ 16,500