Premises And Equipment, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Premises and equipment	$ 84,187	$ 77,476
Accumulated depreciation and amortization	(44,742)	(41,082)
Premises and equipment, net	39,445	36,394
Depreciation and amortization	5,429	4,583	$ 4,181
Land And Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment	5,917	4,797
Buildings And Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment	46,402	42,826
Furniture Fixtures Equipment And Vehicles [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment	31,868	29,853
Occupancy And Equipment Expense [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$ 4,400	$ 4,000	$ 3,800