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Deposits (Tables) | 12 Months Ended
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Dec. 31, 2021
Schedule of deposits and related interest expense | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2021 | ​ | 2020 |
​ | ​ | (Dollars in Thousands) |
Deposits: |  | ​ |  |  | ​ |  | ​
Demand - non-interest bearing | ​ | ​ | ​ | ​ | ​ | ​ | ​
Domestic | ​ | $ | 4,805,999 | ​ | $ | 3,781,277 | ​
Foreign | ​ |  | 1,032,527 | ​ |  | 934,537 | ​
Total demand non-interest bearing | ​ |  | 5,838,526 | ​ |  | 4,715,814 | ​
Savings and interest bearing demand | ​ | ​ | ​ | ​ | ​ | ​ | ​
Domestic | ​ |  | 3,555,279 | ​ |  | 2,919,314 | ​
Foreign | ​ |  | 1,035,269 | ​ |  | 933,191 | ​
Total savings and interest bearing demand | ​ |  | 4,590,548 | ​ |  | 3,852,505 | ​
Time, certificates of deposit $100,000 or more | ​ | ​ | ​ | ​ | ​ | ​ | ​
Domestic | ​ |  | 794,757 | ​ |  | 797,692 | ​
Foreign | ​ |  | 866,160 | ​ |  | 822,387 | ​
Less than $100,000 | ​ | ​ | ​ | ​ | ​ | ​ | ​
Domestic | ​ |  | 286,499 | ​ |  | 291,473 | ​
Foreign | ​ |  | 241,387 | ​ |  | 241,989 | ​
Total time, certificates of deposit | ​ |  | 2,188,803 | ​ |  | 2,153,541 | ​
Total deposits | ​ | $ | 12,617,877 | ​ | $ | 10,721,860 | ​
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2021 | ​ | 2020 | ​ | 2019 |
​ | ​ | (Dollars in Thousands) |
Interest expense: |  | ​ |  |  | ​ |  |  | ​ |  | ​
Savings and interest bearing demand | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Domestic |  | $ | 3,268 | ​ | $ | 5,098 | ​ | $ | 13,462 | ​
Foreign |  | ​ | 842 | ​ |  | 1,260 | ​ |  | 2,917 | ​
Total savings and interest bearing demand |  | ​ | 4,110 | ​ |  | 6,358 | ​ |  | 16,379 | ​
Time, certificates of deposit $100,000 or more | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Domestic |  | ​ | 6,652 | ​ |  | 8,827 | ​ |  | 7,804 | ​
Foreign |  | ​ | 3,452 | ​ |  | 7,536 | ​ |  | 9,407 | ​
Less than $100,000 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Domestic |  | ​ | 984 | ​ |  | 1,781 | ​ |  | 2,232 | ​
Foreign |  | ​ | 567 | ​ |  | 1,086 | ​ |  | 1,527 | ​
Total time, certificates of deposit |  | ​ | 11,655 | ​ |  | 19,230 | ​ |  | 20,970 | ​
Total interest expense on deposits | ​ | $ | 15,765 | ​ | $ | 25,588 | ​ | $ | 37,349 | ​
​
Scheduled maturities of time deposits | Scheduled maturities of time deposits as of December 31, 2021 were as follows: ​
​ | ​ | ​ | ​ | ​
​ |  | Total |
​ | ​ | (in thousands) |
2022 | ​ | $ | 2,071,684 | ​
2023 | ​ |  | 86,480 | ​
2024 | ​ |  | 20,788 | ​
2025 | ​ |  | 9,608 | ​
2026 | ​ |  | 231 | ​
Thereafter | ​ |  | 12 | ​
Total | ​ | $ | 2,188,803 | ​
Scheduled maturities of time deposits in amounts of $100,000 or more | ​
​ | ​ | ​ | ​
​ | ​ | Total
​ | ​ | (in thousands)
Due within 3 months or less |  | $ | 677,946
Due after 3 months and within 6 months | ​ |  | 407,731
Due after 6 months and within 12 months | ​ |  | 506,392
Due after 12 months | ​ |  | 68,848
​ | ​ | $ | 1,660,917

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