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v3.22.1

ACQUISITIONS (Details) |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 01, 2022 USD ($) | Aug. 02, 2021 USD ($) | Jul. 01, 2021 USD ($) | Jun. 03, 2021 USD ($) | Dec. 31, 2021 USD ($) | Mar. 31, 2022 USD ($) | Sep. 30, 2021 USD ($) | Mar. 31, 2021 USD ($) | Sep. 30, 2021 USD ($) | Dec. 31, 2021 USD ($) | Oct. 04, 2021 item
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Purchase price of acquisition |  |  |  |  |  | $ 2,464,000 |  |  |  | $ 32,770,000 |
Contingent consideration |  |  |  |  |  | 0 |  |  |  | 2,900,000 |
Goodwill |  |  |  |  | $ 799,109,000 | 799,080,000 |  | $ 793,456,000 |  | 799,109,000 |
Revenue earned |  |  |  |  |  | 300,000 |  |  |  |  |
Direct expenses |  |  |  |  |  | 100,000 |  |  |  |  |
Cash |  |  |  |  |  | 2,464,000 |  | $ 0 |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration |  | $ 3,400,000 |  |  |  |  |  |  |  |  |
NuVantage Insurance, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  | $ 1,400,000 |  |  |  |  |  |  |
Goodwill |  |  |  | 1,400,000 |  |  |  |  |  |  |
Revenue earned |  |  |  |  |  | 300,000 |  |  |  |  |
Direct expenses |  |  |  |  |  |  | $ 300,000 |  | $ 300,000 |  |
Purchase price in cash |  |  |  | $ 2,900,000 |  |  |  |  |  |  |
NuVantage Insurance, Inc. [Member] | Maximum | Probability Adjusted Level Of Retained Revenue |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration, measurement input 2 |  |  |  |  | 5,800,000 |  |  |  |  | 5,800,000 |
NuVantage Insurance, Inc. [Member] | Minimum | Probability Adjusted Level Of Retained Revenue |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration, measurement input 2 |  |  |  |  | 5,600,000 |  |  |  |  | 5,600,000 |
Fringe Benefits Design of Minnesota, Inc ("FBD") [Member] |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Purchase price of acquisition |  |  |  |  |  |  |  |  |  | 16,750,000 |
Contingent consideration |  |  | $ 1,400,000 |  |  |  |  |  |  | 1,400,000 |
Goodwill |  |  | 2,000,000 |  | $ 2,017,000 |  |  |  |  | $ 2,017,000 |
Revenue earned |  |  |  |  |  | 1,400,000 |  |  |  |  |
Direct expenses |  |  |  |  |  | 1,100,000 |  |  |  |  |
Cash |  |  | $ 15,400,000 |  |  |  |  |  |  |  |
Contingent consideration, measurement input |  |  | 1.05 |  | 1.50 |  |  |  |  | 1.50 |
Period considered for additional consideration based on future retained revenue |  |  | 2 years |  |  |  |  |  |  |  |
Consideration payable term |  |  | 3 years |  |  |  |  |  |  |  |
Acquisition-related contingent consideration adjustment |  |  |  |  | $ 200,000 |  |  |  |  |  |
Fair value contingent consideration adjustment |  |  |  |  |  |  |  |  |  | $ 1,600,000 |
Fringe Benefits Design of Minnesota, Inc ("FBD") [Member] | Maximum |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration |  |  | $ 2,700,000 |  | 2,700,000 |  |  |  |  |  |
Fringe Benefits Design of Minnesota, Inc ("FBD") [Member] | Maximum | Probability Adjusted Level Of Retained Revenue |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration, measurement input 2 |  |  | 5,800,000 |  |  |  |  |  |  |  |
Fringe Benefits Design of Minnesota, Inc ("FBD") [Member] | Minimum |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration |  |  | 0 |  | 0 |  |  |  |  |  |
Fringe Benefits Design of Minnesota, Inc ("FBD") [Member] | Minimum | Probability Adjusted Level Of Retained Revenue |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration, measurement input 2 |  |  | 5,600,000 |  |  |  |  |  |  |  |
Fringe Benefits Design of Minnesota, Inc ("FBD") [Member] | Customer Lists [Member] |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  | $ 14,000,000 |  |  |  |  |  |  |  |
Thomas Gregory Associates [Member] |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Purchase price of acquisition | $ 2,500,000 |  |  |  |  |  |  |  |  | 13,120,000 |
Contingent consideration |  | 1,500,000 |  |  |  |  |  |  |  | 1,500,000 |
Intangibles | $ 2,500,000 |  |  |  |  |  |  |  |  |  |
Goodwill |  | 2,200,000 |  |  | $ 2,170,000 |  |  |  |  | 2,170,000 |
Revenue earned |  |  |  |  |  | 1,500,000 |  |  |  |  |
Direct expenses |  |  |  |  |  | 400,000 |  |  |  |  |
Cash |  | $ 11,600,000 |  |  |  |  |  |  |  |  |
Period considered for additional consideration based on future retained revenue |  | 3 years |  |  |  |  |  |  |  |  |
Thomas Gregory Associates [Member] | Within Two Years From Acquisition [Member] |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Consideration payable term |  | 2 years |  |  |  |  |  |  |  |  |
Thomas Gregory Associates [Member] | Within Three Years From Acquisition [Member] |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Consideration payable term |  | 3 years |  |  |  |  |  |  |  |  |
Thomas Gregory Associates [Member] | Maximum |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration |  |  |  |  |  |  |  |  |  | $ 3,400,000 |
Contingent consideration, measurement input |  | 1.09 |  |  | 1.65 |  |  |  |  | 1.65 |
Thomas Gregory Associates [Member] | Maximum | Probability Adjusted Level Of Retained Revenue |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration, measurement input 2 |  | $ 3,800,000 |  |  | $ 3,400,000 |  |  |  |  | $ 3,400,000 |
Thomas Gregory Associates [Member] | Minimum |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration |  | $ 0 |  |  |  |  |  |  |  | $ 0 |
Contingent consideration, measurement input |  | 0.82 |  |  | 1.38 |  |  |  |  | 1.38 |
Thomas Gregory Associates [Member] | Minimum | Probability Adjusted Level Of Retained Revenue |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration, measurement input 2 |  | $ 2,300,000 |  |  | $ 3,000,000 |  |  |  |  | $ 3,000,000 |
Thomas Gregory Associates [Member] | Customer Lists [Member] |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Intangibles |  | $ 10,900,000 |  |  |  |  |  |  |  |  |
Elmira Savings Bank [Member] |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |
Number of Branch Locations of Acquiree Bank | item |  |  |  |  |  |  |  |  |  |  | 12
Purchase price of acquisition |  |  |  |  |  | $ 82,800,000 |  |  |  |  |

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