Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Core deposit intangible
Goodwill	$ 24,885	$ 24,885
Other intangible assets	3,354	4,298
Amortization of Intangible Assets	944	$ 1,049	$ 1,057
Gross Carrying Amount	9,261
Accumulated Amortization	(5,907)
Net Carrying Amount	3,354
Estimated Amortization
Year 2017	(588)
Year 2018	(549)
Year 2019	(522)
Year 2020	(441)
Year 2021	(419)
Year 2016
Core deposit intangible
Net Carrying Amount	3,354
Year 2017
Core deposit intangible
Net Carrying Amount	2,766
Year 2018
Core deposit intangible
Net Carrying Amount	2,217
Year 2019
Core deposit intangible
Net Carrying Amount	1,695
Year 2020
Core deposit intangible
Net Carrying Amount	1,254
Year 2021
Core deposit intangible
Net Carrying Amount	$ 835