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Employee Benefit Plans - Estimated Benefits to be Paid in Each of Next Five Years and in the Aggregate for the Five Years Thereafter (Detail)
$ in Thousands
Dec. 31, 2021
USD ($)
Defined Benefit Plan Disclosure [Line Items]  
2022 $ 6,586
2023 6,698
2024 7,077
2025 7,461
2026 7,784
2027 and thereafter 269,911
Total 305,517
Farmers Capital Bank Corporation Postretirement Medical Benefit Plan [Member]  
Defined Benefit Plan Disclosure [Line Items]  
2022 599
2023 604
2024 606
2025 593
2026 598
2027 and thereafter 14,125
Total $ 17,125