Acquisitions - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	Mar. 09, 2020	Mar. 31, 2021	Mar. 31, 2020
Business Acquisition [Line Items]
Acquisition and integration related expenses		$ 245	$ 5,472
Bankmanagers Corporation
Business Acquisition [Line Items]
Total assets	$ 1,150,905
Total deposits	950,076
Loans	$ 687,923
Fixed exchange ratio (in shares)	29.9675
Cash paid per share (in dollars per share)	$ 623.02
Special dividends paid (in dollars per share)	$ 346.00
Consideration transferred	$ 174,382
Common stock, shares issued (in shares)	4,930,231
Cash paid	$ 102,499
Goodwill	$ 59,649