Goodwill and Other Intangible Assets - Components of Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 34,978	$ 34,248
Accumulated Amortization and Fair Value Adjustments	19,743	17,597
Net Carrying Amount	15,235	16,651
Covenants Not To Compete [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	710	710
Accumulated Amortization and Fair Value Adjustments	409	205
Net Carrying Amount	301	505
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,788	6,788
Accumulated Amortization and Fair Value Adjustments	1,593	1,004
Net Carrying Amount	5,195	5,784
Customer Related Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,381	12,381
Accumulated Amortization and Fair Value Adjustments	9,190	8,504
Net Carrying Amount	3,191	3,877
Servicing Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	15,099	14,369
Accumulated Amortization and Fair Value Adjustments	8,551	7,884
Net Carrying Amount	$ 6,548	$ 6,485