Income Taxes (Deferred Tax Asets And Liabilities) (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred Tax Assets:
Allowance for loan and lease losses	$ 16,231	$ 15,022
Employee benefits	1,852	1,779
Pension plan OCI	5,175	5,873
Deferred loan fees and costs	315	212
Non-qualified stock option expense	522	503
Losses on other real estate owned	32	98
Other than temporary impairment	322	322
Loan and deposit premium/discount	293	476
Reserve for recourse loans	199	199
Loss carryforward	0	273
Other	9	6
Gross deferred tax assets	24,950	24,763
Valuation allowance	0	(287)
Net deferred tax assets	24,950	24,476
Deferred Tax Liabilities:
Unrealized gains on investments available for sale	(4,319)	(5,327)
Pension plan costs	(1,709)	(2,124)
Depreciation	(1,338)	(55)
Intangible assets	(1,542)	(1,276)
Bond accretion	(228)	(174)
Other	(18)	(16)
Gross deferred tax liabilities	(9,154)	(8,972)
Net deferred tax asset	$ 15,796	$ 15,504