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Other Intangibles (Tables)
 3 Months Ended
Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of core deposit intangibles The carrying basis and accumulated amortization of recognized core deposit intangibles are noted below.
March 31, 2021December 31, 2020
Gross carrying amount$102,396 $102,396 
Accumulated amortization(74,778)(73,421)
Total core deposit intangibles$27,618 $28,975 
Schedule of estimated future amortization expense Estimated future amortization expense is summarized as follows:
Amortization Expense
2021$4,072 
20225,027 
20234,827 
20244,241 
20253,526 
After 20255,925 
$27,618