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Earnings Per Share (Calculation of Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Feb. 28, 2017	Feb. 29, 2016
Earnings Per Share [Abstract]
Net (loss) income (in dollars)	$ (525)	$ 3,216
Weighted average shares outstanding (in shares)	48,733	50,810
Dilutive impact from common stock equivalents (in shares)	0	630
Diluted weighted average shares outstanding (in shares)	48,733	51,440
Basic (loss) earnings per share (in dollars per share)	$ (0.01)	$ 0.06
Diluted (loss) earnings per share (in dollars per share)	$ (0.01)	$ 0.06

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Amount after tax of income (loss) from continuing operations attributable to the parent.

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