Acquisitions - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Mar. 26, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Common stock, shares outstanding		43,880,562	44,975,771
Acquisition of goodwill		$ 151,238	$ 151,238	$ 119,880
Salin
Business Acquisition [Line Items]
Exchange ratio per share	23907.50%
Cash paid for each share (in USD per share)	$ 87,417.17
Common stock, shares outstanding	275
Common stock issued (in shares)	6,563,697
Market closing price per share	$ 15.65
Estimated transaction value	$ 126,700
Costs related to the acquisition	5,600
Total purchase price	126,722
Net intangible assets acquired	19,818
Acquisition of goodwill	$ 31,358
Core deposit intangible amortization period		10 years