Goodwill and Intangible Assets - Additional Information (Details) - USD ($)		12 Months Ended
	Mar. 26, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Intangible Assets [Line Items]
Goodwill impairment loss		$ 0	$ 0
Goodwill acquired		0	31,358,000
Amortization expense for intangible assets totaled		$ 3,800,000	$ 3,500,000	$ 2,000,000.0
Core deposit intangible | Minimum
Intangible Assets [Line Items]
Core deposit intangible amortization period		7 years
Core deposit intangible | Maximum
Intangible Assets [Line Items]
Core deposit intangible amortization period		10 years
Salin
Intangible Assets [Line Items]
Goodwill acquired	$ 31,200,000