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Securities Sold Under Agreements to Repurchase (Tables)
3 Months Ended
Mar. 31, 2021
Securities Sold under Agreements to Repurchase [Abstract]  
Schedule of Securities Sold Under Agreements to Repurchase and Weighted Average Interest Rates The following table presents securities sold under agreements to repurchase and related weighted-average interest rates:
At or for the
Three Months
Ended
March 31,
2021
At
December 31,
2020
At or for the
Three Months
Ended
March 31,
2020
(dollars in thousands)
Outstanding at period end$395,242 $431,166 $318,067 
Average amount outstanding during the period398,662 N/A329,091 
Maximum amount outstanding at any month-end during the period395,242 N/A318,067 
Weighted-average interest rate:
During the period0.12 %N/A0.47 %
At period end0.12 %0.12 %0.22 %
Schedule of Remaining Contractual Maturity of Secured Borrowings and Class of Collateral Pledged Under Repurchase Agreements
The following table presents the contractual maturity of our secured borrowings and class of collateral pledged:
 At March 31, 2021
 Remaining Contractual Maturity of the Agreements
(dollars in thousands)Overnight and ContinuousUp to
30 Days
 30-90 DaysGreater Than 90 daysTotal
Repurchase Agreements:     
U.S. Treasury and agency securities$395,242 $ $ $ $395,242 
Total$395,242 $ $ $ $395,242