| Notes Payable (Tables) | 3 Months Ended | ||||||||||||||||||||||||||||||
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| Mar. 31, 2019 | |||||||||||||||||||||||||||||||
| Debt Disclosure [Abstract] | |||||||||||||||||||||||||||||||
| Schedule of notes payable maturities | Scheduled principal payments as of March 31, 2019 with respect to notes payable are summarized as follows: 
 
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| X | ||||||||||
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- References No definition available. 
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| X | ||||||||||
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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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