Goodwill and Other Intangible Assets (Estimated Aggregated Future Amortization Expense) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other Intangible Assets
2015	$ 3,410
2016	2,781
2017	2,140
2018	1,490
2019	865
Thereafter	396
Total acquired intangibles	11,082	$ 14,599
Core Deposits
Other Intangible Assets
2015	2,688
2016	2,175
2017	1,658
2018	1,138
2019	648
Thereafter	249
Total acquired intangibles	8,556	11,240
Customer Relationships
Other Intangible Assets
2015	722
2016	606
2017	482
2018	352
2019	217
Thereafter	147
Total acquired intangibles	2,526	3,359
Servicing rights
Other Intangible Assets
Total acquired intangibles	$ 2,305	$ 2,387	$ 2,238	$ 2,295