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Noncash Investing and Financing Activities	12 Months Ended
Noncash Investing and Financing Activities	Dec. 31, 2017
Noncash Investing and Financing Activities disclosure
Noncash Investing and Financing Activities disclosure [Text Block]	17. NONCASH INVESTING AND FINANCING ACTIVITIES There were no material noncash financing or investing activities during the years ended December 31, 2017, 2016 and 2015.