Concentration of Credit Risk (Details Textual) |
12 Months Ended |
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Dec. 31, 2017 | |
| Credit Concentration Risk [Member] | |
| Concentration Risk [Line Items] | |
| Concentration Risk, Percentage | 89.50% |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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