| **Income Taxes Income Taxes (Narrative) (Details) (Details) (USD $)**                                                  | 12 Months Ended |
|------------------------------------------------------------------------------------------------------------------------|-----------------|
||
| **Income Tax [Line Items]**                                                                                            |            |   |   |
| Deferred tax valuation allowance, percent                                                                              | 100.00%         |   |   |
| Net deferred tax assets                                                                                                | $ 10,215,000    | $ 838,000 |   |
| Amount in retained earnings for additions to the tax bad debt reserve for which no federal tax provision has been made |            | 5,000,000 |   |
| Net unrealized built-in losses, realization period subject to limitations                                              | 5 years         |   |   |
| Net unrealized build-in losses, carryforward period                                                                    | 20 years        |   |   |
| Increase (decrease) in valuation allowance                                                                             | 34,359,000      | (15,392,000) | (52,299,000) |
| Deferred tax assets related to NOL carryforwards                                                                       | 135,050,000     | 145,472,000 |   |
| Effective income tax rate                                                                                              | 39.485%         |   |   |
| Granite Corp. [Member]                                                                                                 |            |   |   |
| **Income Tax [Line Items]**                                                                                            |            |   |   |
| Increase (decrease) in valuation allowance                                                                             | (28,300,000)    |   |   |
| Deferred tax assets related to NOL carryforwards                                                                       | 2,900,000       |   |   |
| State Jurisdiction [Member]                                                                                            |            |   |   |
| **Income Tax [Line Items]**                                                                                            |            |   |   |
| Increase (decrease) in valuation allowance                                                                             | $ (5,300,000)   |   |   |
| State income tax rate                                                                                                  | 6.90%           |   |   |
| Tax Year 2014 [Member]                                                                                                 |            |   |   |
| **Income Tax [Line Items]**                                                                                            |            |   |   |
| Effective income tax rate                                                                                              | 38.25%          |   |   |
| Tax Year 2014 [Member] | State Jurisdiction [Member]                                                                   |            |   |   |
| **Income Tax [Line Items]**                                                                                            |            |   |   |
| State income tax rate                                                                                                  | 6.00%           |   |   |
| Tax Year 2015 [Member] | State Jurisdiction [Member]                                                                   |            |   |   |
| **Income Tax [Line Items]**                                                                                            |            |   |   |
| State income tax rate                                                                                                  | 5.00%           |   |   |

| X                                                                                                                                                                                                                                                                          |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Deferred Tax Assets, Valuation Allowance, Percent
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                      |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Deferred Tax Liability, Additions to Tax Bad Debt Reserve, No Federal Tax Provision Made
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                            |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Effective Income Tax Rate Reconciliation, at State Statutory Income Tax Rate, Percent
+ References
No definition available.
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| X                                                                                                                                              |
|------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                                                                                                                                 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Net Unrealized Built-in Losses, Carryforward Period
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                          |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Net Unrealized Built-in Losses, Realization Period Subject to Limitations
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of the change in the period in the valuation allowance for a specified deferred tax asset.
+ References
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