Acquisitions (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2017 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Business Combinations [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Schedule of Business Acquisitions, by Acquisition [Table Text Block] | The purchase price allocation for the acquisition is as follows:
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Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block] | The following table reports the intangible assets by asset category and useful life:
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