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Investment Securities (Tables) | 3 Months Ended
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Mar. 31, 2016
Investments Debt And Equity Securities [Abstract] |
Schedule of amortized cost and fair value of debt securities classified as available-for-sale |
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  |  |
(in thousands) |  | Cost |  |  | Gains |  |  | Losses |  |  | Fair value |
March 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Government sponsored enterprises |  | $ | 42,111 |  |  | $ | 110 |  |  | $ | 9 |  |  |  | 42,212 |
Asset-backed securities |  |  | 175,869 |  |  |  | 866 |  |  |  | 892 |  |  |  | 175,843 |
Obligations of states and political subdivisions |  |  | 27,212 |  |  |  | 523 |  |  |  | 17 |  |  |  | 27,718 |
Total available-for-sale securities |  | $ | 245,192 |  |  | $ | 1,499 |  |  | $ | 918 |  |  | $ | 245,773 |
December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Government sponsored enterprises |  | $ | 73,605 |  |  | $ | 127 |  |  | $ | 235 |  |  | $ | 73,497 |
Asset-backed securities |  |  | 130,179 |  |  |  | 440 |  |  |  | 1,768 |  |  |  | 128,851 |
Obligations of states and political subdivisions |  |  | 32,224 |  |  |  | 493 |  |  |  | 11 |  |  |  | 32,706 |
Total available-for-sale securities |  | $ | 236,008 |  |  | $ | 1,060 |  |  | $ | 2,014 |  |  | $ | 235,054 |
Schedule of amortized cost and fair value of debt securities classified as available-for-sale by contractual maturity |
|  | Amortized |  |  | Fair |
(in thousands) |  | Cost |  |  | Value |
Due in one year or less |  | $ | 18,149 |  |  | $ | 18,155 |
Due after one year through five years |  |  | 40,630 |  |  |  | 40,934 |
Due after five years through ten years |  |  | 10,013 |  |  |  | 10,312 |
Due after ten years |  |  | 531 |  |  |  | 529 |
Total |  |  | 69,323 |  |  |  | 69,930 |
Asset-backed securities |  |  | 175,869 |  |  |  | 175,843 |
Total available-for-sale securities |  | $ | 245,192 |  |  | $ | 245,773 |
Schedule of gross unrealized losses on debt securities and fair value of related securities aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position |
|  | Less than 12 months |  |  | 12 months or more |  |  | Total |  |  | Total |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
(in thousands) |  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
At March 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Government sponsored enterprises |  | $ | 17,997 |  |  | $ | (9 | ) |  | $ | 0 |  |  | $ | 0 |  |  | $ | 17,997 |  |  | $ | (9 | )
Asset-backed securities |  |  | 57,446 |  |  |  | (523 | ) |  |  | 40,267 |  |  |  | (369 | ) |  |  | 97,713 |  |  |  | (892 | )
political subdivisions |  |  | 3,039 |  |  |  | (16 | ) |  |  | 251 |  |  |  | (1 | ) |  |  | 3,290 |  |  |  | (17 | )
Total |  | $ | 78,482 |  |  | $ | (548 | ) |  | $ | 40,518 |  |  | $ | (370 | ) |  | $ | 119,000 |  |  | $ | (918 | )
(in thousands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
At December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Government sponsored enterprises |  | $ | 43,539 |  |  | $ | (222 | ) |  | $ | 1,002 |  |  | $ | (13 | ) |  | $ | 44,541 |  |  | $ | (235 | )
Asset-backed securities |  |  | 56,095 |  |  |  | (620 | ) |  |  | 43,576 |  |  |  | (1,148 | ) |  |  | 99,671 |  |  |  | (1,768 | )
Obligations of states and political subdivisions |  |  | 2,571 |  |  |  | (6 | ) |  |  | 718 |  |  |  | (5 | ) |  |  | 3,289 |  |  |  | (11 | )
Total |  | $ | 102,205 |  |  | $ | (848 | ) |  | $ | 45,296 |  |  | $ | (1,166 | ) |  | $ | 147,501 |  |  | $ | (2,014 | )
Schedule of components of investment securities gains (losses), which are recognized in earnings |
|  | Three Months Ended March 31, |
(in thousands) |  | 2016 |  |  | 2015 |
Gains realized on sales |  | $ | 472 |  |  | $ | 0 |
Losses realized on sales |  |  | 0 |  |  |  | 0 |
Other-than-temporary impairment recognized |  |  | 0 |  |  |  | 0 |
Investment securities gains |  | $ | 472 |  |  | $ | 0 |

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