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Business Combinations - Additional Information (Details) $ in Thousands |  | 9 Months Ended
--- | --- | ---
Jan. 01, 2020 USD ($) | Sep. 30, 2021 USD ($) 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

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