Goodwill and Other Intangible Assets - Components of Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 26,445	$ 27,980
Accumulated Amortization and Fair Value Adjustments	14,349	15,360
Net Carrying Amount	12,096	12,620
Core Deposit Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,520	1,520
Accumulated Amortization and Fair Value Adjustments	339	276
Net Carrying Amount	1,181	1,244
Customer Related Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,381	14,227
Accumulated Amortization and Fair Value Adjustments	7,305	8,728
Net Carrying Amount	5,076	5,499
Mortgage Servicing Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,544	12,233
Accumulated Amortization and Fair Value Adjustments	6,705	6,356
Net Carrying Amount	$ 5,839	$ 5,877