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Deposits (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Schedule of Deposits and Weighted Average Rate on Deposits | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Weighted |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Average |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Rate |
​ |  | 2021 |  | 2020 |  | 2021 |
​ | ​ | (Dollars in thousands) | ​ | ​ |
Interest-bearing deposits: |  | ​ |  |  | ​ |  |  |  | ​
Certificate of deposit accounts | ​ | $ | 946,575 | ​ | $ | 1,138,361 |  | 0.57 | %
Savings accounts | ​ |  | 156,554 | ​ |  | 168,183 |  | 0.13 | ​
Money market accounts | ​ |  | 2,342,003 | ​ |  | 1,682,345 |  | 0.22 | ​
NOW accounts | ​ |  | 1,920,779 | ​ |  | 2,323,172 |  | 0.11 | ​
Total interest-bearing deposits | ​ |  | 5,365,911 | ​ |  | 5,312,061 |  |  | ​
Non-interest bearing demand deposits | ​ |  | 967,621 | ​ |  | 778,672 |  |  | ​
Total due to depositors | ​ |  | 6,333,532 | ​ |  | 6,090,733 |  |  | ​
Mortgagors' escrow deposits | ​ |  | 51,913 | ​ |  | 45,622 |  | 0.01 | ​
Total deposits | ​ | $ | 6,385,445 | ​ | $ | 6,136,355 |  |  | ​
Schedule of Interest Expense on Deposits | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2021 |  | 2020 |  | 2019
​ | ​ | (In thousands)
Certificate of deposit accounts | ​ | $ | 7,340 | ​ | $ | 18,096 | ​ | $ | 35,078
Savings accounts | ​ |  | 255 | ​ |  | 495 | ​ |  | 1,378
Money market accounts | ​ |  | 7,271 | ​ |  | 14,368 | ​ |  | 27,819
NOW accounts | ​ |  | 5,453 | ​ |  | 9,309 | ​ |  | 23,553
Total due to depositors | ​ |  | 20,319 | ​ |  | 42,268 | ​ |  | 87,828
Mortgagors' escrow deposits | ​ |  | 5 | ​ |  | 44 | ​ |  | 229
Total interest expense on deposits | ​ | $ | 20,324 | ​ | $ | 42,312 | ​ | $ | 88,057
Schedule of Remaining Maturities of Certificates of Deposit Accounts | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2021 |  | 2020
​ | ​ | (In thousands)
Within 12 months | ​ | $ | 755,874 | ​ | $ | 923,235
More than 12 months to 24 months | ​ |  | 122,366 | ​ |  | 139,088
More than 24 months to 36 months | ​ |  | 43,830 | ​ |  | 58,125
More than 36 months to 48 months | ​ |  | 22,249 | ​ |  | 14,488
More than 48 months to 60 months | ​ |  | 1,092 | ​ |  | 3,394
More than 60 months | ​ |  | 1,165 | ​ |  | 31
Total certificate of deposit accounts | ​ | $ | 946,575 | ​ | $ | 1,138,361

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