Unaudited Quarterly Financial Data Unaudited Quarterly Financial Data (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Feb. 28, 2014	Nov. 30, 2013	Aug. 31, 2013	May 31, 2013	Feb. 28, 2013	Nov. 30, 2012	Aug. 31, 2012	May 31, 2012	Feb. 28, 2014	Feb. 28, 2013	Feb. 29, 2012
Unaudited Quarterly Financial Data [Abstract]
Revenue, Net	$ 187,105	$ 245,814	$ 183,818	$ 192,972	$ 206,790	$ 243,036	$ 191,715	$ 194,036	$ 809,709	$ 835,577	$ 707,062
Gross Profit	52,896	68,798	54,102	54,452	61,691	69,949	54,686	50,496	230,248	236,822	202,955
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ (49,026)	$ 15,424	$ 4,863	$ 2,142	$ 10,270	$ 13,202	$ 3,720	$ (4,700)	$ (26,597)	$ 22,492	$ 25,649
Earnings Per Share, Basic	$ (2.01)	$ 0.63	$ 0.20	$ 0.09	$ 0.44	$ 0.56	$ 0.16	$ (0.20)	$ (1.10)	$ 0.96	$ 1.11
Earnings Per Share, Diluted	$ (2.01)	$ 0.63	$ 0.20	$ 0.09	$ 0.43	$ 0.56	$ 0.16	$ (0.20)	$ (1.10)	$ 0.95	$ 1.10