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Income Taxes (Tables)
6 Months Ended
Jun. 30, 2021
Income Tax Disclosure [Abstract]  
Income Tax Rate Reconciliation
Income Tax Rate Reconciliation
Three Months Ended June 30,Six Months Ended June 30,
2021202020212020
Tax provision at U.S. federal statutory rate$233 $125 $297 $197 
Tax-exempt interest(10)(12)(21)(24)
Increase in deferred tax valuation allowance 13 
Sale of business(5)— (5)— 
Tax law change(7)— (7)— 
Other (12)(12)
Provision for income taxes$205 $124 $259 $195