Borrowings - Schedule of Details of Short-term Borrowings (Parenthetical) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Short Term Debt [Line Items]
Securities Sold Under Agreements to Repurchase	$ 600,590	$ 604,306
Long-term Repurchase Agreements with Government Entities
Short Term Debt [Line Items]
Securities Sold Under Agreements to Repurchase	500	2,100
Long-term Repurchase Agreements with Private Institutions
Short Term Debt [Line Items]
Securities Sold Under Agreements to Repurchase	$ 600,000	$ 600,000