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Borrowings (Tables)
12 Months Ended
Dec. 31, 2021
Debt Disclosure [Abstract]  
Carrying Value of Repurchase Agreements by Maturity and Category of Collateral The following tables summarize the carrying value of the Company’s repurchase agreements by remaining contractual maturity and category of collateral:
December 31, 2021December 31, 2020
Remaining Contractual Maturity of the Agreements
(Dollars in thousands)Overnight and Continuous
State and local governments$— 787,016 
Corporate bonds— 217,567 
Residential mortgage-backed securities1,020,794 — 
Total$1,020,794 1,004,583