Goodwill and Intangible Assets - (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 260,567	$ 260,567	$ 210,344
Amortization of intangible assets		5,690	5,673	$ 5,543
Finite-Lived Intangible Assets [Line Items]
Core deposit intangible, net, end of year		22,286
Goodwill		365,164	260,567	210,344
Goodwill Acquired Through Acquisition		$ 104,597	50,223
Core Deposits [Member]
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-lived intangible assets useful life	10 years	10 years
Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Residual Value		$ 4,892	2,681
Amortization		(5,690)	(5,673)
Core deposit intangible, net, end of year		$ 22,286	$ 23,084	$ 26,076