Goodwill and Other Intangible Assets - Goodwill and Other Intangibles (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Total	$ 106,235	$ 111,110
Core deposit intangible
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	153,496	146,355
Accumulated amortization	(59,634)	(48,992)
Total	93,862	97,363	$ 111,808
Books of Business Intangible
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	19,937	19,937
Accumulated amortization	(7,564)	(6,190)
Total	$ 12,373	$ 13,747	$ 15,532