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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2017
Summary of Significant Accounting Policies [Abstract] |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
Computer software |  |  |  |  |  |  |  |  |  | 3 to 15
Land rights |  |  |  |  |  |  |  |  |  | 50 to 143
Naming rights |  |  |  |  |  |  |  |  |  | 1 to 24
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |

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