Affordable Housing Projects Tax Credit Partnerships - Tax Credits and Other Tax Benefits Recognized and Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Effective Yield Method
Tax credits and other tax benefits recognized	$ 2,938	$ 2,930	$ 8,814	$ 8,789
Amortization Expense in Provision for Income Taxes	2,347	1,891	7,042	5,674
Proportional Amortization Method
Tax credits and other tax benefits recognized	1,794	753	4,839	2,260
Amortization Expense in Provision for Income Taxes	$ 1,345	$ 645	$ 3,580	$ 1,934