Mergers and Acquisitions - Additional Information (Detail) - USD ($) $ in Millions		12 Months Ended
	Jan. 22, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Merger expenses		$ 2.0	$ 0.0	$ 0.0
Howard Bancorp, Inc.
Business Acquisition [Line Items]
Merger expenses		$ 1.8
Howard Bancorp, Inc. | Subsequent Event
Business Acquisition [Line Items]
Assets acquired as a result of merger	$ 2,400.0
Loans acquired as a result of merger	1,800.0
Deposits acquired as a result of merger	1,800.0
Value of acquisition	$ 443.0
Howard Bancorp, Inc. | Common Stock | Subsequent Event
Business Acquisition [Line Items]
Common shares issued (in shares)	34,074,495
Common shares to be acquired, shares (in shares)	18,930,329