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Subsequent Event	3 Months Ended
Subsequent Event	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent Events [Text Block]	SUBSEQUENT EVENT After March 31, 2015, our board of directors approved a plan to sell the remaining 30 drilling rigs removed from service in December 2014 within the next year. The approximate carrying value of these rigs is $8.9 million.