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, gross	$ 120,825	$ 110,585
Accumulated depreciation	(39,552)	(32,115)
Premises and equipment, net	81,273	78,470
Depreciation [Abstract]
Depreciation of premises and equipment	7,437	6,099	$ 5,059
Land and Land Improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	12,574	10,927
Buildings and Leasehold Improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	56,446	56,772
Furniture, Fixtures and Equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	12,275	10,898
Software
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 39,530	$ 31,988