Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Indefinite-lived trade name intangible	$ 7,040	$ 7,040
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	49,710	49,710
Accumulated Amortization	(26,560)	(24,532)
Net Carrying Amount	23,150	25,178
Core deposit intangible
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	41,745	41,745
Accumulated Amortization	(22,558)	(21,032)
Net Carrying Amount	19,187	20,713
Customer relationship intangible
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,265	5,265
Accumulated Amortization	(1,661)	(1,195)
Net Carrying Amount	3,604	4,070
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,700	2,700
Accumulated Amortization	(2,341)	(2,305)
Net Carrying Amount	$ 359	$ 395