Fair Value of Financial Instruments - Hierarchy Table on Nonrecurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Level 1
Fair Value Disclosures
Collateral dependent loans/Impaired loans	$ 0	$ 0
Level 2
Fair Value Disclosures
Collateral dependent loans/Impaired loans	0	0
Level 3
Fair Value Disclosures
Collateral dependent loans/Impaired loans	14,623,169	14,392,684
Nonrecurring
Fair Value Disclosures
Collateral dependent loans/Impaired loans	33,869	937
Nonrecurring | Level 1
Fair Value Disclosures
Collateral dependent loans/Impaired loans	0	0
Nonrecurring | Level 2
Fair Value Disclosures
Collateral dependent loans/Impaired loans	0	0
Nonrecurring | Level 3
Fair Value Disclosures
Collateral dependent loans/Impaired loans	$ 33,869	$ 937