Goodwill and Other Intangible Assets (Other Intangibles) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2010
Other Intangible Assets
Gross intangibles	$ 15,871	$ 10,872
Acquired intangibles	10,318	4,999
Accumulated amortization	(11,590)	(7,513)
Total acquired intangibles	14,599	8,358
Other intangible assets	16,986	10,596
Core Deposits
Other Intangible Assets
Gross intangibles	7,013	2,226
Acquired intangibles	8,623	4,787
Accumulated amortization	(4,396)	(1,156)
Total acquired intangibles	11,240	5,857
Customer Relationships
Other Intangible Assets
Gross intangibles	8,858	8,646
Acquired intangibles	1,695	212
Accumulated amortization	(7,194)	(6,357)
Total acquired intangibles	3,359	2,501
Servicing rights
Other Intangible Assets
Total acquired intangibles	2,387	2,238	$ 2,295	$ 2,073
Other intangible assets	$ 2,387	$ 2,238