| **Consolidated Statements of Comprehensive Loss (Unaudited) (USD $)In Thousands, unless otherwise specified** | 3 Months Ended | 6 Months Ended |
|---------------------------------------------------------------------------------------------------------------|----------------|----------------|
||
| **Statement of Comprehensive Income [Abstract]**                                                              |           |           |   |   |
| Net income (loss)                                                                                             | $ 2,792        | $ (3,183)      | $ 4,069 | $ (7,779) |
| **Other comprehensive income (loss):**                                                                        |           |           |   |   |
| Unrealized holdings gains (losses) arising during the period on available-for-sale securities                 | 8,266          | (16,514)       | 13,557 | (21,448) |
| Tax effect                                                                                                    | (3,161)        | 6,523          | (5,185) | 8,472 |
| Unrealized holdings gains (losses) arising during the period on available-for-sale securities, net of tax     | 5,105          | (9,991)        | 8,372 | (12,976) |
| Reclassification adjustment for gain on available-for-sale securities included in net income                  | (720)          | (345)          | (720) | (2,723) |
| Tax effect                                                                                                    | 275            | 136            | 275 | 1,076 |
| Reclassification adjustment for gain on available-for-sale securities included in net income, net of tax      | (445)          | (209)          | (445) | (1,647) |
| Unrealized gain (loss) on interest rate swaps                                                                 | (414)          | 0              | (373) | 0 |
| Tax effect                                                                                                    | 159            | 0              | 143 | 0 |
| Unrealized gain (loss) on interest rate swaps, net of tax                                                     | (255)          | 0              | (230) | 0 |
| Change in defined benefit plans liability                                                                     | 0              | (255)          | 0 | (509) |
| Tax effect                                                                                                    | 0              | 101            | 0 | 201 |
| Change in defined benefit plans liability, net of tax                                                         | 0              | (154)          | 0 | (308) |
| Other comprehensive income (loss), net of tax                                                                 | 4,405          | (10,354)       | 7,697 | (14,931) |
| Comprehensive income (loss)                                                                                   | $ 7,197        | $ (13,537)     | $ 11,766 | $ (22,710) |

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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 before tax, after reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans, attributable to parent entity.
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Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans, attributable to parent entity.
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Amount of tax (expense) benefit, after reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans, attributable to parent entity.
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Amount before tax, after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).
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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).
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Amount of tax expense (benefit), after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).
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Amount after tax of other comprehensive income (loss) attributable to parent entity.
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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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Amount before tax and reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities.
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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.
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Amount of tax expense (benefit) before reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities.
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