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Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Thousands		12 Months Ended
	May 01, 2019	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Goodwill acquired		$ 485	$ 16,275
Amortization expense of intangibles		785	$ 600
LBC Bancshares, Inc
Finite-Lived Intangible Assets [Line Items]
Goodwill acquired	$ 15,700
Goodwill, subsequent adjustments		$ 485
LBC Bancshares, Inc \| Core Deposits
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	3,100
PFB Mortgage
Finite-Lived Intangible Assets [Line Items]
Goodwill acquired	$ 541