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Fair Value - Changes in Fair Value for Items Measured at Fair Value Pursuant to Election of the Fair Value (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Schedule of Trading Securities and Other Trading Assets [Line Items]
Interest Income	$ 151,572	$ 145,573	$ 449,619	$ 435,015
Interest (Expense)	(10,454)	(14,513)	(32,102)	(55,044)
Residential loans held for sale
Schedule of Trading Securities and Other Trading Assets [Line Items]
Other Gains and (Losses)	(453)	(1,360)	(2,043)	3,658
Interest Income	0	16	2	18
Interest (Expense)	(2)	0	(3)	(2)
Total Changes in Fair Values Included in Current Period Earnings	$ (455)	$ (1,344)	$ (2,044)	$ 3,674

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For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

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Amount of the cost of borrowed funds accounted for as interest expense.

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