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INVESTMENT SECURITIES (Tables) | 12 Months Ended
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Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract] |
Unrealized Gain (Loss) on Investments [Table Text Block] | The following tables present information related to the Company’s portfolio of securities available-for-sale and held-to-maturity at December 31, 2014 and 2013.
|  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
|  | December 31, 2014
|  | (Dollars in Thousands)
Investment Securities Available-for-Sale: |  |  |  |  |  |  |  |
Federal agency obligations |  |  | $ |  | 32,650 |  |  |  | $ |  | 217 |  |  |  | $ |  | (50 | ) |  |  |  | $ |  | 32,817 |
Residential mortgage pass-through securities |  |  |  | 58,836 |  |  |  |  | 1,531 |  |  |  |  | (11 | ) |  |  |  |  | 60,356 |
Commercial mortgage pass-through securities |  |  |  | 3,042 |  |  |  |  | 4 |  |  |  |  | — |  |  |  |  | 3,046 |
Obligations of U.S. states and political subdivisions |  |  |  | 8,201 |  |  |  |  | 205 |  |  |  |  | — |  |  |  |  | 8,406 |
Trust preferred securities |  |  |  | 16,086 |  |  |  |  | 489 |  |  |  |  | (269 | ) |  |  |  |  | 16,306 |
Corporate bonds and notes |  |  |  | 119,838 |  |  |  |  | 5,950 |  |  |  |  | (11 | ) |  |  |  |  | 125,777 |
Asset-backed securities |  |  |  | 27,393 |  |  |  |  | 140 |  |  |  |  | (31 | ) |  |  |  |  | 27,502 |
Certificates of deposit |  |  |  | 2,098 |  |  |  |  | 27 |  |  |  |  | (2 | ) |  |  |  |  | 2,123 |
Equity securities |  |  |  | 376 |  |  |  |  | — |  |  |  |  | (69 | ) |  |  |  |  | 307 |
Other securities |  |  |  | 12,941 |  |  |  |  | 33 |  |  |  |  | (82 | ) |  |  |  |  | 12,892 |
Total |  |  | $ |  | 281,461 |  |  |  | $ |  | 8,596 |  |  |  | $ |  | (525 | ) |  |  |  | $ |  | 289,532 |
Investment Securities Held-to-Maturity: |  |  |  |  |  |  |  |
U.S. Treasury and agency securities |  |  | $ |  | 28,264 |  |  |  | $ |  | 920 |  |  |  | $ |  | — |  |  |  | $ |  | 29,184 |
Federal agency obligations |  |  |  | 27,103 |  |  |  |  | 322 |  |  |  |  | (28 | ) |  |  |  |  | 27,397 |
Residential mortgage-backed securities |  |  |  | 5,955 |  |  |  |  | 28 |  |  |  |  | — |  |  |  |  | 5,983 |
Commercial mortgage-backed securities |  |  |  | 4,266 |  |  |  |  | 50 |  |  |  |  | — |  |  |  |  | 4,316 |
Obligations of U.S. states and political subdivisions |  |  |  | 120,144 |  |  |  |  | 4,512 |  |  |  |  | (60 | ) |  |  |  |  | 124,596 |
Corporate bonds and notes |  |  |  | 38,950 |  |  |  |  | 1,026 |  |  |  |  | (7 | ) |  |  |  |  | 39,969 |
Total |  |  | $ |  | 224,682 |  |  |  | $ |  | 6,858 |  |  |  | $ |  | (95 | ) |  |  |  | $ |  | 231,445 |
Total investment securities |  |  | $ |  | 506,143 |  |  |  | $ |  | 15,454 |  |  |  | $ |  | (620 | ) |  |  |  | $ |  | 520,977 |
|  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
|  | December 31, 2013
|  | (Dollars in Thousands)
Investment Securities Available-for-Sale: |  |  |  |  |  |  |  |
U.S. Treasury and agency securities |  |  | $ |  | 14,344 |  |  |  | $ |  | — |  |  |  | $ |  | (825 | ) |  |  |  | $ |  | 13,519 |
Federal agency obligations |  |  |  | 20,567 |  |  |  |  | 29 |  |  |  |  | (655 | ) |  |  |  |  | 19,941 |
Residential mortgage pass-through securities |  |  |  | 48,312 |  |  |  |  | 791 |  |  |  |  | (229 | ) |  |  |  |  | 48,874 |
Commercial mortgage pass-through securities |  |  |  | 7,145 |  |  |  |  | 3 |  |  |  |  | (157 | ) |  |  |  |  | 6,991 |
Obligations of U.S. states and political subdivisions |  |  |  | 30,804 |  |  |  |  | 711 |  |  |  |  | (55 | ) |  |  |  |  | 31,460 |
Trust preferred securities |  |  |  | 19,763 |  |  |  |  | 150 |  |  |  |  | (510 | ) |  |  |  |  | 19,403 |
Corporate bonds and notes |  |  |  | 154,182 |  |  |  |  | 4,930 |  |  |  |  | (482 | ) |  |  |  |  | 158,630 |
Asset-backed securities |  |  |  | 15,733 |  |  |  |  | 246 |  |  |  |  | — |  |  |  |  | 15,979 |
Certificates of deposit |  |  |  | 2,250 |  |  |  |  | 32 |  |  |  |  | (20 | ) |  |  |  |  | 2,262 |
Equity securities |  |  |  | 376 |  |  |  |  | — |  |  |  |  | (89 | ) |  |  |  |  | 287 |
Other securities |  |  |  | 5,671 |  |  |  |  | 68 |  |  |  |  | (15 | ) |  |  |  |  | 5,724 |
Total |  |  | $ |  | 319,147 |  |  |  | $ |  | 6,960 |  |  |  | $ |  | (3,037 | ) |  |  |  | $ |  | 323,070 |
Investment Securities Held-to-Maturity: |  |  |  |  |  |  |  |
U.S. Treasury and agency securities |  |  | $ |  | 28,056 |  |  |  | $ |  | — |  |  |  | $ |  | (1,019 | ) |  |  |  | $ |  | 27,037 |
Federal agency obligations |  |  |  | 15,249 |  |  |  |  | 23 |  |  |  |  | (389 | ) |  |  |  |  | 14,883 |
Residential mortgage-backed securities |  |  |  | 2,246 |  |  |  |  | — |  |  |  |  | (64 | ) |  |  |  |  | 2,182 |
Commercial mortgage-backed securities |  |  |  | 4,417 |  |  |  |  | 41 |  |  |  |  | (62 | ) |  |  |  |  | 4,396 |
Obligations of U.S. states and political subdivisions |  |  |  | 127,418 |  |  |  |  | 1,303 |  |  |  |  | (3,688 | ) |  |  |  |  | 125,033 |
Corporate bonds and notes |  |  |  | 37,900 |  |  |  |  | 149 |  |  |  |  | (622 | ) |  |  |  |  | 37,427 |
Total |  |  | $ |  | 215,286 |  |  |  | $ |  | 1,516 |  |  |  | $ |  | (5,844 | ) |  |  |  | $ |  | 210,958 |
Total investment securities |  |  | $ |  | 534,433 |  |  |  | $ |  | 8,476 |  |  |  | $ |  | (8,881 | ) |  |  |  | $ |  | 534,028 |
Investments Classified by Contractual Maturity Date [Table Text Block] | The following table presents information for investments in securities available-for-sale and held-to-maturity at December 31, 2014, based on scheduled maturities. Actual maturities can be expected to differ from scheduled maturities due to prepayment or early call options of the issuer.
|  | December 31, 2014
| Amortized Cost |  | Fair Value
|  | (Dollars in Thousands)
Investment Securities Available-for-Sale: |  |  |  |
Due in one year or less |  |  | $ |  | 12,903 |  |  |  | $ |  | 13,054 |
Due after one year through five years |  |  |  | 42,369 |  |  |  |  | 43,670 |
Due after five years through ten years |  |  |  | 93,793 |  |  |  |  | 98,615 |
Due after ten years |  |  |  | 57,201 |  |  |  |  | 57,592 |
Residential mortgage pass-through securities |  |  |  | 58,836 |  |  |  |  | 60,356 |
Commercial mortgage pass-through securities |  |  |  | 3,042 |  |  |  |  | 3,046 |
Equity securities |  |  |  | 376 |  |  |  |  | 307 |
Other securities |  |  |  | 12,941 |  |  |  |  | 12,892 |
Total |  |  | $ |  | 281,461 |  |  |  | $ |  | 289,532 |
Investment Securities Held-to-Maturity: |  |  |  |
Due in one year or less |  |  | $ |  | 5,001 |  |  |  | $ |  | 5,054 |
Due after one year through five years |  |  |  | 9,211 |  |  |  |  | 9,367 |
Due after five years through ten years |  |  |  | 70,030 |  |  |  |  | 72,302 |
Due after ten years |  |  |  | 130,219 |  |  |  |  | 134,423 |
Residential mortgage-backed securities |  |  |  | 5,955 |  |  |  |  | 5,983 |
Commercial mortgage-backed securities |  |  |  | 4,266 |  |  |  |  | 4,316 |
Total |  |  | $ |  | 224,682 |  |  |  | $ |  | 231,445 |
Total investment securities |  |  | $ |  | 506,143 |  |  |  | $ |  | 520,977 |
Schedule of Realized Gain (Loss) [Table Text Block] | Gross gains and losses from the sales calls and maturities of investment securities for the years ended December 31, 2014, 2013 and 2012 were as follows:
(Dollars in Thousands) |  | Years Ended December 31,
| 2014 |  | 2013 |  | 2012
Proceeds |  |  | $ |  | 81,844 |  |  |  | $ |  | 122,165 |  |  |  | $ |  | 130,059 |
Gross gains on sales of investment securities |  |  |  | 2,837 |  |  |  |  | 2,451 |  |  |  |  | 2,905 |
Gross losses on sales of investment securities |  |  |  | 19 |  |  |  |  | 88 |  |  |  |  | 23 |
Net gains on sales of investment securities |  |  |  | 2,818 |  |  |  |  | 2,363 |  |  |  |  | 2,882 |
Less: tax provision on net gains |  |  |  | (986 | ) |  |  |  |  | (645 | ) |  |  |  |  | (879 | ) |
Net gains on sales of investment securities |  |  | $ |  | 1,832 |  |  |  | $ |  | 1,718 |  |  |  | $ |  | 2,003 |
Schedule of OTTI Charges for period | Summary of Other-than-Temporary Impairment Charges
|  | Years Ended December 31,
| 2014 |  | 2013 |  | 2012
|  | (Dollars in Thousands)
One variable rate private label CMO |  |  | $ |  | — |  |  |  | $ |  | — |  |  |  | $ |  | 484 |
Pooled trust preferred securities |  |  |  | — |  |  |  |  | 628 |  |  |  |  | 68 |
Principal losses on a variable rate CMO |  |  |  | — |  |  |  |  | 24 |  |  |  |  | 318 |
Total other-than-temporary impairment charges |  |  | $ |  | — |  |  |  | $ |  | 652 |  |  |  | $ |  | 870 |
Schedule of Preferred Security and Associated Ratings [Table Text Block] | The following table presents detailed information for each single issue trust preferred security held by the Company at December 31, 2014, of which all but one has at least one rating below investment grade.
Issuer |  | Class/ Tranche |  | Amortized Cost |  | Fair Value |  | Gross Unrealized Gain (Loss) |  | Lowest Credit Rating Assigned |  |  |  |  |  |  |  |
|  | (dollars in thousands)
Countrywide Capital IV |  |  |  | n/a |  |  |  | $ |  | 1,771 |  |  |  | $ |  | 1,805 |  |  |  |  | 34 |  |  |  |  | BB |  |  |  |  |  |  |  |  |
Countrywide Capital V |  |  |  | n/a |  |  |  |  | 2,747 |  |  |  |  | 2,833 |  |  |  |  | 86 |  |  |  |  | BB |  |  |  |  |  |  |  |  |
Countrywide Capital V |  |  |  | n/a |  |  |  |  | 250 |  |  |  |  | 257 |  |  |  |  | 7 |  |  |  |  | BB |  |  |  |  |  |  |  |  |
Nationsbank Cap Trust III |  |  |  | n/a |  |  |  |  | 1,575 |  |  |  |  | 1,306 |  |  |  |  | (269 | ) |  |  |  |  | BB |  |  |  |  |  |  |  |  |
Morgan Stanley Cap Trust IV |  |  |  | n/a |  |  |  |  | 2,500 |  |  |  |  | 2,535 |  |  |  |  | 35 |  |  |  |  | BB |  |  |  |  |  |  |  |  |
Morgan Stanley Cap Trust IV |  |  |  | n/a |  |  |  |  | 1,743 |  |  |  |  | 1,773 |  |  |  |  | 30 |  |  |  |  | BB |  |  |  |  |  |  |  |  |
Goldman Sachs |  |  |  | n/a |  |  |  |  | 1,000 |  |  |  |  | 1,185 |  |  |  |  | 185 |  |  |  |  | BB |  |  |  |  |  |  |  |  |
Stifel Financial |  |  |  | n/a |  |  |  |  | 4,500 |  |  |  |  | 4,612 |  |  |  |  | 112 |  |  |  |  | BBB | - |  |  |  |  |  |  |  |  |
Total |  |  |  |  | $ |  | 16,086 |  |  |  | $ |  | 16,306 |  |  |  |  | 220 |  |  |  |  |  |  |  |  |  |  |
Schedule of Unrealized Loss on Investments [Table Text Block] | The following tables indicate gross unrealized losses not recognized in income and fair value, aggregated by investment category and the length of time individual securities have been in a continuous unrealized loss position at December 31, 2014 and 2013:
|  | December 31, 2014
| Total |  | Less than 12 Months |  | 12 Months or Longer
| Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
|  | (Dollars in Thousands)
Investment Securities Available-for-Sale: |  |  |  |  |  |  |  |  |  |  |  |
Federal agency obligation |  |  | $ |  | 6,755 |  |  |  | $ |  | (50 | ) |  |  |  | $ |  | 2,770 |  |  |  | $ |  | (9 | ) |  |  |  | $ |  | 3,985 |  |  |  | $ |  | (41 | ) |
Residential mortgage pass-through securities |  |  |  | 5,694 |  |  |  |  | (11 | ) |  |  |  |  | 5,694 |  |  |  |  | (11 | ) |  |  |  |  | — |  |  |  |  | — |
Trust preferred securities |  |  |  | 1,307 |  |  |  |  | (269 | ) |  |  |  |  | — |  |  |  |  | — |  |  |  |  | 1,307 |  |  |  |  | (269 | ) |
Corporate bonds and notes |  |  |  | 1,961 |  |  |  |  | (11 | ) |  |  |  |  | 1,961 |  |  |  |  | (11 | ) |  |  |  |  | — |  |  |  |  | — |
Asset-backed securities |  |  |  | 9,773 |  |  |  |  | (31 | ) |  |  |  |  | 9,773 |  |  |  |  | (31 | ) |  |  |  |  | — |  |  |  |  | — |
Certificates of deposit |  |  |  | 369 |  |  |  |  | (2 | ) |  |  |  |  | 369 |  |  |  |  | (2 | ) |  |  |  |  | — |  |  |  |  | — |
Equity securities |  |  |  | 307 |  |  |  |  | (69 | ) |  |  |  |  | — |  |  |  |  | — |  |  |  |  | 307 |  |  |  |  | (69 | ) |
Other securities |  |  |  | 5,417 |  |  |  |  | (82 | ) |  |  |  |  | 1,978 |  |  |  |  | (21 | ) |  |  |  |  | 3,439 |  |  |  |  | (61 | ) |
Total |  |  | $ |  | 31,583 |  |  |  | $ |  | (525 | ) |  |  |  | $ |  | 22,545 |  |  |  | $ |  | (85 | ) |  |  |  | $ |  | 9,038 |  |  |  | $ |  | (440 | ) |
Investment Securities Held-to-Maturity: |  |  |  |  |  |  |  |  |  |  |  |
Federal agency obligation |  |  |  | 3,228 |  |  |  |  | (28 | ) |  |  |  |  | 3,228 |  |  |  |  | (28 | ) |  |  |  |  | — |  |  |  |  | — |
Obligations of U.S. states and political subdivisions |  |  |  | 8,341 |  |  |  |  | (60 | ) |  |  |  |  | 1,401 |  |  |  |  | (3 | ) |  |  |  |  | 6,940 |  |  |  |  | (57 | ) |
Corporate bonds and notes |  |  |  | 993 |  |  |  |  | (7 | ) |  |  |  |  | 993 |  |  |  |  | (7 | ) |  |  |  |  | — |  |  |  |  | — |
Total |  |  |  | 12,562 |  |  |  |  | (95 | ) |  |  |  |  | 5,622 |  |  |  |  | (38 | ) |  |  |  |  | 6,940 |  |  |  |  | (57 | ) |
Total Temporarily Impaired Securities |  |  | $ |  | 44,145 |  |  |  | $ |  | (620 | ) |  |  |  | $ |  | 28,167 |  |  |  | $ |  | (123 | ) |  |  |  | $ |  | 15,978 |  |  |  | $ |  | (497 | ) |
|  | December 31, 2013
| Total |  | Less than 12 Months |  | 12 Months or Longer
| Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
|  | (Dollars in Thousands)
Investment Securities Available-for-Sale: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury and agency securities |  |  | $ |  | 13,519 |  |  |  | $ |  | (825 | ) |  |  |  | $ |  | 13,519 |  |  |  | $ |  | (825 | ) |  |  |  | $ |  | — |  |  |  | $ |  | — |
Federal agency obligation |  |  |  | 17,200 |  |  |  |  | (655 | ) |  |  |  |  | 17,200 |  |  |  |  | (655 | ) |  |  |  |  | — |  |  |  |  | — |
Residential mortgage pass-through securities |  |  |  | 18,293 |  |  |  |  | (229 | ) |  |  |  |  | 18,293 |  |  |  |  | (229 | ) |  |  |  |  | — |  |  |  |  | — |
Commercial mortgage pass-through securities |  |  |  | 2,924 |  |  |  |  | (157 | ) |  |  |  |  | 2,924 |  |  |  |  | (157 | ) |  |  |  |  | — |  |  |  |  | — |
Obligations of U.S. states and political subdivisions |  |  |  | 4,199 |  |  |  |  | (55 | ) |  |  |  |  | 4,199 |  |  |  |  | (55 | ) |  |  |  |  | — |  |  |  |  | — |
Trust preferred securities |  |  |  | 5,306 |  |  |  |  | (510 | ) |  |  |  |  | 4,031 |  |  |  |  | (211 | ) |  |  |  |  | 1,275 |  |  |  |  | (299 | ) |
Corporate bonds and notes |  |  |  | 32,498 |  |  |  |  | (482 | ) |  |  |  |  | 30,533 |  |  |  |  | (448 | ) |  |  |  |  | 1,965 |  |  |  |  | (34 | ) |
Certificates of deposit |  |  |  | 552 |  |  |  |  | (20 | ) |  |  |  |  | 552 |  |  |  |  | (20 | ) |  |  |  |  | — |  |  |  |  | — |
Equity securities |  |  |  | 287 |  |  |  |  | (89 | ) |  |  |  |  | — |  |  |  |  | — |  |  |  |  | 287 |  |  |  |  | (89 | ) |
Other securities |  |  |  | 985 |  |  |  |  | (15 | ) |  |  |  |  | — |  |  |  |  | — |  |  |  |  | 985 |  |  |  |  | (15 | ) |
Total |  |  |  | 95,763 |  |  |  |  | (3,037 | ) |  |  |  |  | 91,251 |  |  |  |  | (2,600 | ) |  |  |  |  | 4,512 |  |  |  |  | (437 | ) |
Investment Securities Held-to-Maturity: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury and agency securities |  |  |  | 27,037 |  |  |  |  | (1,019 | ) |  |  |  |  | 27,037 |  |  |  |  | (1,019 | ) |  |  |  |  | — |  |  |  |  | — |
Federal agency obligation |  |  |  | 13,492 |  |  |  |  | (389 | ) |  |  |  |  | 13,197 |  |  |  |  | (388 | ) |  |  |  |  | 295 |  |  |  |  | (1 | ) |
Residential mortgage pass-through securities |  |  |  | 2,182 |  |  |  |  | (64 | ) |  |  |  |  | 2,182 |  |  |  |  | (64 | ) |  |  |  |  | — |  |  |  |  | — |
Commercial mortgage-backed securities |  |  |  | 1,395 |  |  |  |  | (62 | ) |  |  |  |  | 1,395 |  |  |  |  | (62 | ) |  |  |  |  | — |  |  |  |  | — |
Obligations of U.S. states and political subdivisions |  |  |  | 66,034 |  |  |  |  | (3,688 | ) |  |  |  |  | 57,072 |  |  |  |  | (2,957 | ) |  |  |  |  | 8,962 |  |  |  |  | (731 | ) |
Corporate bonds and notes |  |  |  | 27,210 |  |  |  |  | (622 | ) |  |  |  |  | 27,210 |  |  |  |  | (622 | ) |  |  |  |  | — |  |  |  |  | — |
Total |  |  |  | 137,350 |  |  |  |  | (5,844 | ) |  |  |  |  | 128,093 |  |  |  |  | (5,112 | ) |  |  |  |  | 9,257 |  |  |  |  | (732 | ) |
Total Temporarily Impaired Securities |  |  | $ |  | 233,113 |  |  |  | $ |  | (8,881 | ) |  |  |  | $ |  | 219,344 |  |  |  | $ |  | (7,712 | ) |  |  |  | $ |  | 13,769 |  |  |  | $ |  | (1,169 | ) |

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- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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- Definition Tabular disclosure of unrealized gains and losses on investments. + References No definition available. + Details
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