Other Non-Interest Income And Other Non-Interest Expense (Selected Components of Other Non-Interest Income And Other Non-Interest Expense) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other Income and Expenses [Abstract]
Letter of credit fees	$ 790	$ 706	$ 881
Extension fees	503	560	558
Other income	5,521	4,219	5,260
Total other non-interest income	6,814	5,485	6,699
Professional fees	4,819	4,544	4,479
Other real estate owned	76	100	(303)
Postage and delivery	1,173	1,286	1,299
Communications	1,587	1,507	1,606
Other expenses	10,896	10,581	9,129
Total other non-interest expense	$ 18,551	$ 18,018	$ 16,210