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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2017
Accounting Policies [Abstract] |
Property and Equipment, Estimated Useful Lives |
Building and site improvements | 15 - 45 years
Furniture and equipment | 3 - 15 years
Leasehold improvements | 2 - 15 years

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- Definition Tabular disclosure of the estimated lives of property, plant and equipment. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Period Type: | duration