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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2017
Accounting Policies [Abstract] |
Estimated Useful Lives for Various Asset | The estimated useful lives for the various asset categories are as follows:
1) Land and Land Improvements |  | Non-depreciating assets
2) Buildings |  | 25 years
3) Furniture and Fixtures |  | 5 years
4) Computer Equipment and Software |  | 5 years or term of license
5) Other Equipment |  | 5 years
6) Vehicles |  | 5 years
7) Leasehold Improvements |  | Lesser of estimated useful life of the asset (generally 15 years unless established otherwise) or the remaining term of the lease, including renewal options in the lease that are reasonably assured of exercise

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