Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Intangible amortization	$ 7,121	$ 8,105	$ 7,179
Core deposit intangible
Finite-Lived Intangible Assets [Line Items]
Intangible amortization	6,940	7,965	7,048
Customer relationship intangible
Finite-Lived Intangible Assets [Line Items]
Intangible amortization	$ 181	$ 140	$ 131