Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets:
Cash and cash equivalents	$ 38,968	$ 47,358
Investment securities:
Held-to-maturity, at amortized cost (fair value of $5,552)		5,504
Available-for-sale, at fair value	697,544	758,015
Total securities	697,544	763,519
Loans	3,188,249	3,263,399
Allowance for loan losses	(29,289)	(30,838)
Total	3,158,960	3,232,561
Restricted stock, at cost	30,899	40,686
Bank premises and equipment, net	40,017	41,267
Right-of-use asset - operating leases	14,343
Bank-owned life insurance	83,119	80,925
Pension plan assets, net	18,275	15,154
Deferred income tax benefit	317	3,447
Other assets	15,401	16,143
Total assets	4,097,843	4,241,060
Deposits:
Checking	911,978	935,574
Savings, NOW and money market	1,720,599	1,590,341
Time, $100,000 and over	242,359	309,165
Time, other	269,080	249,892
Total	3,144,016	3,084,972
Short-term borrowings	190,710	388,923
Long-term debt	337,472	362,027
Operating lease liability	15,220
Accrued expenses and other liabilities	21,317	16,951
Total liabilities	3,708,735	3,852,873
Commitments and Contingent Liabilities (Note L)
Stockholders' Equity:
Common stock, par value $0.10 per share: Authorized, 80,000,000 shares; Issued and outstanding, 23,934,632 and 25,422,740 shares	2,393	2,542
Surplus	111,744	145,163
Retained earnings	274,376	249,922
Total	388,513	397,627
Accumulated other comprehensive income (loss), net of tax	595	(9,440)
Total	389,108	388,187
Total	4,097,843	4,241,060
Commercial And Industrial [Member]
Investment securities:
Loans	103,879	98,785
Allowance for loan losses	(1,493)	(1,158)
Commercial Mortgages [Member]
Investment securities:
Loans	1,401,289	1,281,295
Consumer And Other [Member]
Investment securities:
Loans	2,431	5,958
Allowance for loan losses	(13)	(49)
Closed-end [Member] | Residential Mortgages [Member]
Investment securities:
Loans	1,621,419	1,809,651
Allowance for loan losses	(15,698)	(18,844)
Revolving Home Equity [Member] | Residential Mortgages [Member]
Investment securities:
Loans	59,231	67,710
Allowance for loan losses	$ (515)	$ (410)