Premises and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Total premise and equipment	$ 63,516	$ 62,497
Accumulated depreciation and amortization	(24,198)	(22,280)
Total premise and equipment, net	39,318	40,217
Land
Property, Plant and Equipment [Line Items]
Total premise and equipment	2,596	2,600
Furniture And Equipment
Property, Plant and Equipment [Line Items]
Total premise and equipment	14,912	12,641
Tenant Improvements
Property, Plant and Equipment [Line Items]
Total premise and equipment	$ 8,325	8,023
Buildings
Property, Plant and Equipment [Line Items]
Premises and equipment, useful life	39 years
Total premise and equipment	$ 37,683	$ 39,233
Minimum | Furniture And Equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, useful life	3 years
Minimum | Tenant Improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, useful life	2 years
Maximum | Furniture And Equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, useful life	7 years
Maximum | Tenant Improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, useful life	15 years