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Note 4 - Debt and Equity Securities (Tables) | 3 Months Ended
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Mar. 31, 2016
Notes Tables |
Trading Securities [Table Text Block] |
|  | Amortized Cost |  | Fair Value |  | Gross Unrealized Gains |  | Gross Unrealized Losses
|  | (In thousands)
Securites held-to-maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Municipals |  | $ | 7,885 |  |  | $ | 7,885 |  |  | $ | - |  |  | $ | - |
Total |  | $ | 7,885 |  |  | $ | 7,885 |  |  | $ | - |  |  | $ | - |
|  | Amortized Cost |  | Fair Value |  | Gross Unrealized Gains |  | Gross Unrealized Losses
|  | (In thousands)
Securites held-to-maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Municipals |  | $ | 6,180 |  |  | $ | 6,180 |  |  | $ | - |  |  | $ | - |
Total |  | $ | 6,180 |  |  | $ | 6,180 |  |  | $ | - |  |  | $ | - |
|  | Amortized Cost |  | Fair Value |  | Gross Unrealized Gains |  | Gross Unrealized Losses
|  | (In thousands)
Corporate |  | $ | 115,993 |  |  | $ | 111,399 |  |  | $ | 592 |  |  | $ | 5,186 |
Municipals |  |  | 127,023 |  |  |  | 131,869 |  |  |  | 4,846 |  |  |  | - |
Mutual funds |  |  | 21,507 |  |  |  | 21,507 |  |  |  | - |  |  |  | - |
Collateralized loan obligations |  |  | 101,613 |  |  |  | 100,926 |  |  |  | 33 |  |  |  | 720 |
Other |  |  | 7,154 |  |  |  | 7,150 |  |  |  | - |  |  |  | 4 |
Total other securities |  |  | 373,290 |  |  |  | 372,851 |  |  |  | 5,471 |  |  |  | 5,910 |
REMIC and CMO |  |  | 462,677 |  |  |  | 470,194 |  |  |  | 8,107 |  |  |  | 590 |
GNMA |  |  | 10,832 |  |  |  | 11,122 |  |  |  | 325 |  |  |  | 35 |
FNMA |  |  | 167,229 |  |  |  | 170,511 |  |  |  | 3,543 |  |  |  | 261 |
FHLMC |  |  | 16,351 |  |  |  | 16,585 |  |  |  | 234 |  |  |  | - |
Total mortgage-backed securities |  |  | 657,089 |  |  |  | 668,412 |  |  |  | 12,209 |  |  |  | 886 |
Total securities available for sale |  | $ | 1,030,379 |  |  | $ | 1,041,263 |  |  | $ | 17,680 |  |  | $ | 6,796 |
|  | Amortized Cost |  | Fair Value |  | Gross Unrealized Gains |  | Gross Unrealized Losses
|  | (In thousands)
Corporate |  | $ | 115,976 |  |  | $ | 111,674 |  |  | $ | 134 |  |  | $ | 4,436 |
Municipals |  |  | 127,696 |  |  |  | 131,583 |  |  |  | 3,887 |  |  |  | - |
Mutual funds |  |  | 21,290 |  |  |  | 21,290 |  |  |  | - |  |  |  | - |
Collateralized loan obligations |  |  | 53,225 |  |  |  | 52,898 |  |  |  | - |  |  |  | 327 |
Other |  |  | 7,214 |  |  |  | 7,212 |  |  |  | - |  |  |  | 2 |
Total other securities |  |  | 325,401 |  |  |  | 324,657 |  |  |  | 4,021 |  |  |  | 4,765 |
REMIC and CMO |  |  | 469,987 |  |  |  | 469,936 |  |  |  | 3,096 |  |  |  | 3,147 |
GNMA |  |  | 11,635 |  |  |  | 11,798 |  |  |  | 302 |  |  |  | 139 |
FNMA |  |  | 170,327 |  |  |  | 170,057 |  |  |  | 1,492 |  |  |  | 1,762 |
FHLMC |  |  | 16,961 |  |  |  | 16,949 |  |  |  | 87 |  |  |  | 99 |
Total mortgage-backed securities |  |  | 668,910 |  |  |  | 668,740 |  |  |  | 4,977 |  |  |  | 5,147 |
Total securities available for sale |  | $ | 994,311 |  |  | $ | 993,397 |  |  | $ | 8,998 |  |  | $ | 9,912 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | Amortized Cost |  | Fair Value
|  | (In thousands)
Due in one year or less |  | $ | 6,845 |  |  | $ | 6,845 |
Due after one year through five years |  |  | 1,040 |  |  |  | 1,040 |
Total securities held-to-maturity |  | $ | 7,885 |  |  | $ | 7,885 |
|  | Amortized Cost |  | Fair Value
|  | (In thousands)
Due in one year or less |  | $ | 5,993 |  |  | $ | 6,003 |
Due after one year through five years |  |  | 1,825 |  |  |  | 1,855 |
Due after five years through ten years |  |  | 74,821 |  |  |  | 74,261 |
Due after ten years |  |  | 269,144 |  |  |  | 269,225 |
Total other securities |  |  | 351,783 |  |  |  | 351,344 |
Mutual funds |  |  | 21,507 |  |  |  | 21,507 |
Mortgage-backed securities |  |  | 657,089 |  |  |  | 668,412 |
Total securities available for sale |  | $ | 1,030,379 |  |  | $ | 1,041,263 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block] |
|  |  |  | Total |  | Less than 12 months |  | 12 months or more
|  | Count |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
|  |  |  | (Dollars in thousands)
Corporate |  |  | 11 |  |  | $ | 74,813 |  |  | $ | 5,186 |  |  | $ | 56,128 |  |  | $ | 3,871 |  |  | $ | 18,685 |  |  | $ | 1,315 |
Collateralized loan obligations |  |  | 9 |  |  |  | 72,328 |  |  |  | 720 |  |  |  | 72,328 |  |  |  | 720 |  |  |  | - |  |  |  | - |
Other |  |  | 1 |  |  |  | 296 |  |  |  | 4 |  |  |  | - |  |  |  | - |  |  |  | 296 |  |  |  | 4 |
Total other securities |  |  | 21 |  |  |  | 147,437 |  |  |  | 5,910 |  |  |  | 128,456 |  |  |  | 4,591 |  |  |  | 18,981 |  |  |  | 1,319 |
REMIC and CMO |  |  | 10 |  |  |  | 49,379 |  |  |  | 590 |  |  |  | 13,733 |  |  |  | 60 |  |  |  | 35,646 |  |  |  | 530 |
GNMA |  |  | 1 |  |  |  | 6,786 |  |  |  | 35 |  |  |  | - |  |  |  | - |  |  |  | 6,786 |  |  |  | 35 |
FNMA |  |  | 4 |  |  |  | 26,415 |  |  |  | 261 |  |  |  | - |  |  |  | - |  |  |  | 26,415 |  |  |  | 261 |
Total mortgage-backed securities |  |  | 15 |  |  |  | 82,580 |  |  |  | 886 |  |  |  | 13,733 |  |  |  | 60 |  |  |  | 68,847 |  |  |  | 826 |
Total securities available for sale |  |  | 36 |  |  | $ | 230,017 |  |  | $ | 6,796 |  |  | $ | 142,189 |  |  | $ | 4,651 |  |  | $ | 87,828 |  |  | $ | 2,145 |
|  |  |  | Total |  | Less than 12 months |  | 12 months or more
|  | Count |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
|  |  |  | (Dollars in thousands)
Corporate |  |  | 12 |  |  | $ | 85,563 |  |  | $ | 4,436 |  |  | $ | 76,218 |  |  | $ | 3,782 |  |  | $ | 9,345 |  |  | $ | 654 |
Collateralized loan obligations |  |  | 7 |  |  |  | 52,898 |  |  |  | 327 |  |  |  | 52,898 |  |  |  | 327 |  |  |  | - |  |  |  | - |
Other |  |  | 1 |  |  |  | 298 |  |  |  | 2 |  |  |  | - |  |  |  | - |  |  |  | 298 |  |  |  | 2 |
Total other securities |  |  | 20 |  |  |  | 138,759 |  |  |  | 4,765 |  |  |  | 129,116 |  |  |  | 4,109 |  |  |  | 9,643 |  |  |  | 656 |
REMIC and CMO |  |  | 33 |  |  |  | 238,132 |  |  |  | 3,147 |  |  |  | 182,010 |  |  |  | 1,642 |  |  |  | 56,122 |  |  |  | 1,505 |
GNMA |  |  | 1 |  |  |  | 6,977 |  |  |  | 139 |  |  |  | 6,977 |  |  |  | 139 |  |  |  | - |  |  |  | - |
FNMA |  |  | 20 |  |  |  | 102,225 |  |  |  | 1,762 |  |  |  | 75,769 |  |  |  | 1,043 |  |  |  | 26,456 |  |  |  | 719 |
FHLMC |  |  | 3 |  |  |  | 14,715 |  |  |  | 99 |  |  |  | 14,715 |  |  |  | 99 |  |  |  | - |  |  |  | - |
Total mortgage-backed securities |  |  | 57 |  |  |  | 362,049 |  |  |  | 5,147 |  |  |  | 279,471 |  |  |  | 2,923 |  |  |  | 82,578 |  |  |  | 2,224 |
Total securities available for sale |  |  | 77 |  |  | $ | 500,808 |  |  | $ | 9,912 |  |  | $ | 408,587 |  |  | $ | 7,032 |  |  | $ | 92,221 |  |  | $ | 2,880 |

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