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DEPOSITS (Tables) | 12 Months Ended
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Dec. 31, 2017
Summary of Deposit Balances [Table Text Block] |
The following table summarizes deposit balances as of the dates indicated: |  |  |  |  |
| December 31,
| 2017 |  | 2016
(In thousands) |  |  |  |  |
Type of account and interest rate: |  |  |  |  |
Non-interest-bearing checking accounts | $ | 1,833,665 |  | $ | 1,484,155
Interest-bearing savings accounts - 0.05% to 0.40% (2016- 0.05% to 0.40%) |  | 2,401,385 |  |  | 2,518,496
Interest-bearing checking accounts - 0.05% to 1.00% |  |  |  |  |
(2016- 0.05% to 1.00%) |  | 1,207,511 |  |  | 1,075,929
Certificates of deposit- 0.10% to 4.00% (2016- 0.10% to 4.00%) |  | 2,429,585 |  |  | 2,312,928
Brokered certificates of deposit- 0.85% to 2.80% (2016- 0.60% to 2.80%) |  | 1,150,485 |  |  | 1,439,697
| $ | 9,022,631 |  | $ | 8,831,205
Brokered Certificates Of Deposit Mature [Table Text Block] |
Brokered CDs mature as follows:
| December 31,
| 2017
(In thousands) |  |
Three months or less | $ | 194,703
Over three months to six months |  | 133,093
Over six months to one year |  | 329,077
One to three years |  | 360,566
Three to five years |  | 131,666
Over five years |  | 1,380
Total | $ | 1,150,485
Schedule of cash deposits maturity [Table Text Block] |
The following table presents the contractual maturities of CDs, including brokered CDs, as of December 31, 2017: |
|  | Total |  |  |
(In thousands) |  |  |  |  |
Three months or less | $ | 537,114 |  |  |
Over three months to six months |  | 500,020 |  |  |
Over six months to one year |  | 928,613 |  |  |
Over one year to two years |  | 896,331 |  |  |
Over two years to three years |  | 294,459 |  |  |
Over three years to four years |  | 229,232 |  |  |
Over four years to five years |  | 187,463 |  |  |
Over five years |  | 6,838 |  |  |
Total | $ | 3,580,070 |  |  |
Schedule of Interest Expenses on Deposits [Table Text Block] |
A table showing interest expense on deposits follows: |  |  |  |  |  |  |  |
|  | Year Ended December 31,
|  | 2017 |  |  | 2016 |  |  | 2015
(In thousands) |  |  |  |  |  |  |  |
Interest-bearing checking accounts | $ | 4,566 |  | $ | 4,914 |  | $ | 5,440
Savings |  | 12,520 |  |  | 12,392 |  |  | 13,660
Certificates of deposit |  | 30,277 |  |  | 28,068 |  |  | 25,246
Brokered certificates of deposit |  | 19,174 |  |  | 21,928 |  |  | 24,904
Total | $ | 66,537 |  | $ | 67,302 |  | $ | 69,250

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- Definition Tabular disclosure of the aggregate amount of payments due on known contractual obligations for the five years following the date of the latest balance sheet and the combined aggregate amount of maturities of known contractual obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 303 -Paragraph a -Subparagraph 5 + Details
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