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Borrowing Arrangements (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Debt Instrument [Line Items]    
Other borrowings $ 625,627 $ 221,153
FHLB borrowings 333,183 153,358
Other borrowings:    
Debt Instrument [Line Items]    
Other borrowings 625,627 221,153
Average amount outstanding during the period [1] 202,135 77,845
Maximum amount outstanding during the period [2] $ 625,627 $ 316,563
Weighted average interest rate during the period [3] 4.90% 2.40%
Interest rate at end of the period [4] 4.60% 4.10%
FHLB borrowings:    
Debt Instrument [Line Items]    
FHLB borrowings $ 333,183 $ 153,358
Average amount outstanding during the period [1] 404,199 135,926
Maximum amount outstanding during the period [2] $ 533,242 $ 423,645
Weighted average interest rate during the period [3] 3.20% 2.40%
Interest rate at end of the period [5] 5.20% 4.70%
[1] The average amount outstanding during the period was computed by dividing the total daily outstanding principal balances by the number of days in the period.
[2] The maximum amount outstanding at any month-end during the period.
[3] The weighted average interest rate during the period was computed by dividing the actual interest expense (annualized for interim periods) by the average amount outstanding during the period. The weighted average interest rate on other borrowings and FHLB borrowings includes the effect of interest rate swaps.
[4] Stated rate.
[5] The interest rate on FHLB borrowings includes the effect of interest rate swaps.