Annual report pursuant to Section 13 and 15(d)

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details)

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Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Available-for-sale securities    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning of period level 3 fair value $ 249,174 $ 105,157
Realized (losses) gains (24,218) (22,055)
Unrealized (losses) gains 0 0
Provision for credit losses (10,593) 0
Total gains (losses) included in net income (34,811) (22,055)
Other comprehensive (loss) income (4,963) (934)
Purchases 0 14,318
Sales (214,673) 0
Settlements 0 0
Gross transfers into level 3 23,785 550,695
Gross transfers out of level 3 (5,481) (398,007)
End of period level 3 fair value 13,031 249,174
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period 0 0
Change in unrealized gains or losses for the period included in other comprehensive (loss) income for assets held at the end of the reporting period 19,804 8,389
Mortgage servicing rights    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning of period level 3 fair value 1,909,444 1,993,440
Realized (losses) gains (544,157) (313,402)
Unrealized (losses) gains (391,540) (384,257)
Provision for credit losses 0 0
Total gains (losses) included in net income (935,697) (697,659)
Other comprehensive (loss) income 0 0
Purchases 623,284 627,815
Sales (2,012) (1,898)
Settlements (2,890) (16,050)
Gross transfers into level 3 0 0
Gross transfers out of level 3 0 0
End of period level 3 fair value 1,596,153 1,909,444
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period (199,016) (331,919)
Change in unrealized gains or losses for the period included in other comprehensive (loss) income for assets held at the end of the reporting period $ 0 $ 0