Business Combinations - Additional Information (Details) $ in Thousands		6 Months Ended
	Jan. 01, 2020 USD ($)	Jun. 30, 2021 USD ($) property
Core Deposits
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life		10 years
Two River Bancorp Inc.
Business Acquisition [Line Items]
Purchase accounting adjustments, assets	$ 1,111,621
Purchase accounting adjustments, loans	940,072
Purchase accounting adjustments, deposits	941,750
Total consideration paid	197,050
Cash consideration	48,400
Number of properties subject to lease agreement | property		14
Core deposit intangible	12,130	$ 12,100
Country Bank Holding Company, Inc
Business Acquisition [Line Items]
Purchase accounting adjustments, assets	793,680
Purchase accounting adjustments, loans	618,408
Purchase accounting adjustments, deposits	652,653
Total consideration paid	112,836
Number of properties subject to lease agreement | property		5
Core deposit intangible	$ 2,117	$ 2,100