Loans and Leases (Summary of Changes In Amounts Of Loans Outstanding) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Related Party Transactions [Abstract]
Balance at January 1	$ 21,756	$ 18,921	$ 20,494
Additions	8,684	7,060	886
Repayments	(9,390)	(4,225)	(2,459)
Balance at December 31	$ 21,050	$ 21,756	$ 18,921