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Affordable Housing Projects Tax Credit Partnerships - Tax Credits and Other Tax Benefits Recognized and Amortization Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Effective Yield Method        
Tax credits and other tax benefits recognized $ 2,151 $ 2,938 $ 4,302 $ 5,876
Amortization Expense in Provision for Income Taxes 1,670 2,147 3,362 4,293
Proportional Amortization Method        
Tax credits and other tax benefits recognized 2,879 1,523 5,470 3,046
Amortization Expense in Provision for Income Taxes $ 2,385 $ 1,318 $ 4,711 $ 2,637