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Business (Details) In Thousands, unless otherwise specified |  | 0 Months Ended |
--- | --- | --- | ---
Nov. 30, 2012 item | Dec. 08, 2010 Common Stock | Aug. 03, 2011 Ning Xiang
Business |  |  |
Ownership interest acquired (as a percent) |  |  | 51.00%
New common shares issued in initial public offering |  | 6,038 |
Number of wholly owned subsidiaries | 7 |  |

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