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Deposits (Tables) | 12 Months Ended
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Dec. 31, 2022
Schedule of deposits and related interest expense | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2022 | ​ | 2021 |
​ | ​ | (Dollars in Thousands) |
Deposits: |  | ​ |  |  | ​ |  | ​
Demand - non-interest bearing | ​ | ​ | ​ | ​ | ​ | ​ | ​
Domestic | ​ | $ | 4,744,299 | ​ | $ | 4,805,999 | ​
Foreign | ​ |  | 1,101,756 | ​ |  | 1,032,527 | ​
Total demand non-interest bearing | ​ |  | 5,846,055 | ​ |  | 5,838,526 | ​
Savings and interest-bearing demand | ​ | ​ | ​ | ​ | ​ | ​ | ​
Domestic | ​ |  | 3,448,717 | ​ |  | 3,555,279 | ​
Foreign | ​ |  | 1,297,051 | ​ |  | 1,035,269 | ​
Total savings and interest-bearing demand | ​ |  | 4,745,768 | ​ |  | 4,590,548 | ​
Time, certificates of deposit $100,000 or more | ​ | ​ | ​ | ​ | ​ | ​ | ​
Domestic | ​ |  | 652,073 | ​ |  | 794,757 | ​
Foreign | ​ |  | 892,619 | ​ |  | 866,160 | ​
Less than $100,000 | ​ | ​ | ​ | ​ | ​ | ​ | ​
Domestic | ​ |  | 276,660 | ​ |  | 286,499 | ​
Foreign | ​ |  | 246,832 | ​ |  | 241,387 | ​
Total time, certificates of deposit | ​ |  | 2,068,184 | ​ |  | 2,188,803 | ​
Total deposits | ​ | $ | 12,660,007 | ​ | $ | 12,617,877 | ​
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2022 | ​ | 2021 | ​ | 2020 |
​ | ​ | (Dollars in Thousands) |
Interest expense: |  | ​ |  |  | ​ |  |  | ​ |  | ​
Savings and interest-bearing demand | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Domestic |  | $ | 9,196 | ​ | $ | 3,268 | ​ | $ | 5,098 | ​
Foreign |  | ​ | 3,490 | ​ |  | 842 | ​ |  | 1,260 | ​
Total savings and interest-bearing demand |  | ​ | 12,686 | ​ |  | 4,110 | ​ |  | 6,358 | ​
Time, certificates of deposit $100,000 or more | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Domestic |  | ​ | 5,528 | ​ |  | 6,652 | ​ |  | 8,827 | ​
Foreign |  | ​ | 3,867 | ​ |  | 3,452 | ​ |  | 7,536 | ​
Less than $100,000 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Domestic |  | ​ | 1,027 | ​ |  | 984 | ​ |  | 1,781 | ​
Foreign |  | ​ | 735 | ​ |  | 567 | ​ |  | 1,086 | ​
Total time, certificates of deposit |  | ​ | 11,157 | ​ |  | 11,655 | ​ |  | 19,230 | ​
Total interest expense on deposits | ​ | $ | 23,843 | ​ | $ | 15,765 | ​ | $ | 25,588 | ​
​
Scheduled maturities of time deposits | Scheduled maturities of time deposits as of December 31, 2022 were as follows: ​
​ | ​ | ​ | ​ | ​
​ |  | Total |
​ | ​ | (in thousands) |
2023 | ​ | $ | 1,922,183 | ​
2024 | ​ |  | 113,090 | ​
2025 | ​ |  | 19,939 | ​
2026 | ​ |  | 11,575 | ​
2027 | ​ |  | 1,390 | ​
Thereafter | ​ |  | 7 | ​
Total | ​ | $ | 2,068,184 | ​
​
Scheduled maturities of time deposits in amounts of $100,000 or more | ​
​ | ​ | ​ | ​
​ | ​ | Total
​ | ​ | (in thousands)
Due within 3 months or less |  | $ | 692,708
Due after 3 months and within 6 months | ​ |  | 341,445
Due after 6 months and within 12 months | ​ |  | 411,772
Due after 12 months | ​ |  | 98,767
​ | ​ | $ | 1,544,692
​

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