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Deposits and Related Interest (Tables) | 3 Months Ended
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Mar. 31, 2018
Deposits, by Component, Alternative [Abstract] |
Deposits By Component [Table Text Block] |
| March 31, |  | December 31,
| 2018 |  | 2017
| (In thousands)
Non-interest bearing demand deposits | $ | 1,071,648 |  | $ | 969,525
Interest-bearing savings and demand deposits |  | 2,274,855 |  |  | 2,274,116
Individual retirement accounts |  | 219,427 |  |  | 231,376
Retail certificates of deposit |  | 592,307 |  |  | 595,983
Institutional certificates of deposit |  | 200,595 |  |  | 209,951
Total core deposits |  | 4,358,832 |  |  | 4,280,951
Brokered deposits |  | 474,596 |  |  | 518,531
Total deposits | $ | 4,833,428 |  | $ | 4,799,482
Interest Expense Domestic Deposit Liabilities [Table Text Block] |
| Quarter Ended March 31,
| 2018 |  | 2017
| (In thousands)
Demand and savings deposits | $ | 2,812 |  | $ | 2,909
Certificates of deposit |  | 4,486 |  |  | 4,444
| $ | 7,298 |  | $ | 7,353
Maturities Of Time Deposits [Table Text Block] |
| March 31, |  | December 31,
|  | 2018 |  |  | 2017
| (In thousands)
Within one year: |  |  |  |  |
Three (3) months or less | $ | 318,599 |  | $ | 316,382
Over 3 months through 1 year |  | 462,655 |  |  | 508,285
|  | 781,254 |  |  | 824,667
Over 1 through 2 years |  | 462,528 |  |  | 470,670
Over 2 through 3 years |  | 121,506 |  |  | 137,016
Over 3 through 4 years |  | 36,936 |  |  | 36,125
Over 4 through 5 years |  | 37,247 |  |  | 38,623
| $ | 1,439,471 |  | $ | 1,507,101

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