| **Nature of Operations and Basis of Presentation (Details) (USD $)**                             | 12 Months Ended |              | 6 Months Ended | 12 Months Ended |        |            | 12 Months Ended |
|--------------------------------------------------------------------------------------------------|-----------------|--------------|----------------|-----------------|--------|------------|-----------------|
||
| **Nature of Operations [Line Items]**                                                            |            |         |           |            |   |       |            |   |   |   |   |   |   |   |
| Number of business segments                                                                      | 1               |         |           |            |   |       |            |   |   |   |   |   |   |   |
| Amortized cost                                                                                   | $ 151,795,000   |         |           |            |   |       |            |   |   |   |   |   |   |   |
| Loans placed on nonaccrual, period of delinquency                                                | 90 days         |         |           |            |   |       |            |   |   |   |   |   |   |   |
| Change to accrual status, minimum repayment performance                                          | 6 months        |         |           |            |   |       |            |   |   |   |   |   |   |   |
| Uncollectible loan criteria, period of unpaid scheduled payments                                 | 4 months        |         |           |            |   |       |            |   |   |   |   |   |   |   |
| Allowance of loan losses                                                                         | 26,785,000      | 29,314,000   | 39,360,000     | 93,687,000      |   | 5,400,000  | 5,600,000       |   |   |   |   |   |   |   |
| Accretable yield                                                                                 |            |         |           |            |   | 20,500,000 | 16,000,000      | 4,800,000 |   |   |   |   |   |   |
| Estimated useful lives of premises and equipment                                                 |            |         |           |            |   |       |            |   | 10 years | 50 years | 3 years | 10 years |   |   |
| Estimated useful lives of intangible assets                                                      |            |         |           |            |   |       |            |   |   |   |   |   | 8 years | 10 years |
| Cumulative pre-tax loss position, period                                                         | 3 years         |         |           |            |   |       |            |   |   |   |   |   |   |   |
| Total comprehensive loss                                                                         | (18,765,000)    | (36,359,000) | (137,592,000)  |            |   |       |            |   |   |   |   |   |   |   |
| Deferred income tax related to the components of other comprehensive loss                        | 11,000,000      | 200,000      | 2,600,000      |            |   |       |            |   |   |   |   |   |   |   |
| Pension Expense                                                                                  | 300,000         | 400,000      | 400,000        |            |   |       |            |   |   |   |   |   |   |   |
| Deferred gain recognized in other comprehensive income                                           | 0               | 440,000      | 0              |            |   |       |            |   |   |   |   |   |   |   |
| Employer matching contribution percentage                                                        | 50.00%          |         |           |            | 50.00% |       |            |   |   |   |   |   |   |   |
| Percentage of pay deferred by employee eligible for employer matching contributions              | 6.00%           |         |           |            | 6.00%  |       |            |   |   |   |   |   |   |   |
| Matching and discretionary contributions                                                         | $ 500,000       | $ 600,000    | $ 400,000      |            |   |       |            |   |   |   |   |   |   |   |
| Non-tax qualified profit-sharing supplemental executive retirement plan, remaining balances paid |            |         |           |            |   | 2          |            |   |   |   |   |   |   |   |

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Cumulative Pre-Tax Loss Position, Period
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Loans Placed on Nonaccrual, Period of Delinquency
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Nonaccrual Loan, Change to Accrual Status, Minimum Period of Repayment Performance
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Uncollectible Loan Criteria, Period of Unpaid Scheduled Payments
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The aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans with deteriorating of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.
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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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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from unrealized losses in other comprehensive income.
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The amount of the cost recognized during the period for defined contribution plans.
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Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.
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Percentage employer matches of the employee's percentage contribution matched.
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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
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Amount before other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.
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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.
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| - Definition
Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.
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| - Definition
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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| - Definition
The amount of pension benefit costs recognized during the period for (1) defined benefit plans and (2) defined contribution plans. For defined benefit plans, pension expense includes the following components: service cost, interest cost, expected return on plan assets, gain (loss) on plan assets, prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments. For defined contribution plans, the pension expense generally equals the firm's contribution to employees' accounts (if the firm contributes) during the period.
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| - Definition
Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.
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