Goodwill and Other Intangible Assets (Summary of Finite-Lived Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Indefinite-lived Intangible Assets by Major Class [Line Items]
Total other intangible assets, net	$ 21,851	$ 24,209
Community banking | Core deposit intangibles
Indefinite-lived Intangible Assets by Major Class [Line Items]
Gross carrying amount	37,272	34,841
Accumulated amortization	(21,614)	(17,382)
Net carrying amount	15,658	17,459
Specialty finance | Customer list intangibles
Indefinite-lived Intangible Assets by Major Class [Line Items]
Gross carrying amount	1,800	1,800
Accumulated amortization	(1,159)	(1,052)
Net carrying amount	641	748
Wealth management | Customer list and other intangibles
Indefinite-lived Intangible Assets by Major Class [Line Items]
Gross carrying amount	7,940	7,940
Accumulated amortization	(2,388)	(1,938)
Net carrying amount	$ 5,552	$ 6,002