| Discontinued Operations | 9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Sep. 30, 2018 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Discontinued Operations and Disposal Groups [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Discontinued Operations | 
 
 The components of liabilities classified as discontinued operations relate to Commercial Services and consist of the following as of September 30, 2018 and December 31, 2017: 
 
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- References No definition available. 
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- Definition The entire disclosure related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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