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Borrowings - Other short-term borrowings - (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Short-term Debt [Line Items]    
Maximum aggregate balance outstanding at any month-end $ 375,000 $ 75,000
Average monthly aggregate balance outstanding $ 99,083 $ 343
Weighted average interest rate for the year 3.46% 0.35%
Weighted average interest rate at December 31 4.47% 0.35%