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Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Line Items]
Goodwill adjustments	$ 1,907
Goodwill acquired	73,164
Amortization expense	4,571	$ 4,401	$ 4,789
Community banking
Goodwill [Line Items]
Goodwill increase	35,600
Goodwill adjustments	0
Goodwill acquired	35,565
Specialty finance
Goodwill [Line Items]
Goodwill adjustments	1,907
Goodwill acquired	0
Wealth management
Goodwill [Line Items]
Goodwill adjustments	0
Goodwill acquired	$ 37,599
Core deposit intangibles \| Community banking
Goodwill [Line Items]
Finite-lived intangibles, useful life	10 years
Customer list intangibles \| Specialty finance
Goodwill [Line Items]
Finite-lived intangibles, useful life	18 years
Customer list intangibles \| Wealth management
Goodwill [Line Items]
Finite-lived intangibles, useful life	10 years