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Noncontrolling Interests (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2016 | Apr. 02, 2015 | Nov. 25, 2014
Business Acquisition [Line Items] |  |  |
Acquisition date | Dec. 17, 2014 |  |
Robtec [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Acquired ownership percentage | 70.00% |  | 70.00%
Acquisition date | Nov. 25, 2014 |  |
Easyway [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Acquired ownership percentage | 65.00% | 65.00% |
Acquisition date | Apr. 02, 2015 |  |

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