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Summary of Significant Accounting Policies - Property and Equipment (Details)
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12 Months Ended |
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Dec. 31, 2014
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| Vehicles [Member] | Minimum |
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| Property, Plant and Equipment [Line Items] |
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| Useful life of property and equipment |
5 years |
| Vehicles [Member] | Maximum |
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| Property, Plant and Equipment [Line Items] |
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| Useful life of property and equipment |
10 years |
| Furniture, fixtures and equipment [Member] | Minimum |
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| Property, Plant and Equipment [Line Items] |
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| Useful life of property and equipment |
5 years |
| Furniture, fixtures and equipment [Member] | Maximum |
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| Property, Plant and Equipment [Line Items] |
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| Useful life of property and equipment |
10 years |
| Land Improvements [Member] |
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| Property, Plant and Equipment [Line Items] |
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| Useful life of property and equipment |
20 years |
| Building Improvements [Member] |
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| Property, Plant and Equipment [Line Items] |
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| Useful life of property and equipment |
40 years |
| Building [Member] |
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| Property, Plant and Equipment [Line Items] |
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| Useful life of property and equipment |
40 years |