Goodwill and Other Intangible Assets - Components of Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 33,246	$ 37,193
Accumulated Amortization	21,716	25,203
Net Carrying Amount	11,530	11,990
Covenants Not To Compete [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	0	710
Accumulated Amortization	0	710
Net Carrying Amount	0	0
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,788	6,788
Accumulated Amortization	3,376	3,143
Net Carrying Amount	3,412	3,645
Customer Related Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	8,819	12,381
Accumulated Amortization	7,426	10,804
Net Carrying Amount	1,393	1,577
Servicing Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	17,639	17,314
Accumulated Amortization	10,914	10,546
Net Carrying Amount	$ 6,725	$ 6,768