| **Consolidated Statements of Comprehensive Loss (USD $)In Thousands, unless otherwise specified**        | 12 Months Ended |
|----------------------------------------------------------------------------------------------------------|-----------------|
||
| **Statement of Comprehensive Income [Abstract]**                                                         |            |   |   |
| Net loss                                                                                                 | $ (1,483)       | $ (40,005) | $ (137,314) |
| **Other comprehensive income (loss):**                                                                   |            |   |   |
| Unrealized gains arising from termination of supplemental executive retirement plans                     | 0               | 440 | 0 |
| Tax effect                                                                                               | 0               | (173) | 0 |
| Unrealized gains arising from termination of supplemental executive retirement plans, net of tax         | 0               | 267 | 0 |
| Unrealized holdings gains arising during the period on available-for-sale securities                     | (26,703)        | 9,684 | 8,634 |
| Tax effect                                                                                               | 10,256          | (3,824) | (3,409) |
| Unrealized holdings gains arising during the period on available-for-sale securities, net of tax         | (16,447)        | 5,860 | 5,225 |
| Reclassification adjustment for gain on available-for-sale securities included in net income             | (2,772)         | (4,121) | (7,296) |
| Tax effect                                                                                               | 1,093           | 1,627 | 2,881 |
| Reclassification adjustment for gain on available-for-sale securities included in net income, net of tax | (1,679)         | (2,494) | (4,415) |
| Net actuarial gain on pension and post retirement liability                                              | (302)           | 503 | 347 |
| Tax effect                                                                                               | 115             | (199) | (137) |
| Net actuarial gain on pension and post retirement liability, net of tax                                  | (187)           | 304 | 210 |
| Change in pension and post retirement liability                                                          | 1,690           | (481) | (2,145) |
| Tax effect                                                                                               | (659)           | 190 | 847 |
| Change in pension and post-retirement liability, net of tax                                              | 1,031           | (291) | (1,298) |
| Other comprehensive income/(loss), net of tax                                                            | (17,282)        | 3,646 | (278) |
| Comprehensive loss                                                                                       | $ (18,765)      | $ (36,359) | $ (137,592) |

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| - Definition
Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.
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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
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Amount of tax expense (benefit) related to gain (loss) adjustment to other comprehensive income (loss) resulting from settlement or curtailment of pension and other postretirement defined benefit plans.
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Amount before tax of gain (loss) adjustment to other comprehensive income (loss) resulting from settlement or curtailment of defined benefit pension and other postretirement defined benefit plans.
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Amount after tax of other comprehensive income (loss) attributable to parent entity.
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Amount of tax (expense) benefit, before reclassification adjustments, related to (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement benefit plans.
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Amount before tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.
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Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.
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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.
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