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Other Intangibles (Tables)
 9 Months Ended
Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of core deposit intangibles The carrying basis and accumulated amortization of recognized core deposit intangibles and other intangibles are noted below.
September 30, 2021December 31, 2020
Gross carrying amount$102,396 $102,396 
Other intangibles acquired2,247 — 
Accumulated amortization(77,705)(73,421)
Total core deposit and other intangibles$26,938 $28,975 
Schedule of estimated future amortization expense Estimated future amortization expense is summarized as follows:
Amortization Expense
2021$1,463 
20225,402 
20235,145 
20244,510 
20253,754 
After 20256,664 
$26,938