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Segments and Geographic Information (Details 1) - USD ($) $ in Thousands	3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
	May 31, 2016	Feb. 29, 2016	Nov. 30, 2015	Aug. 31, 2015	May 31, 2015	Feb. 28, 2015	Nov. 30, 2014	Aug. 31, 2014	Nov. 30, 2015	Nov. 30, 2014	Feb. 29, 2016	Feb. 28, 2015	May 31, 2016	May 31, 2015	May 31, 2014
Net Sales by Geography
Net sales	$ 93,419	$ 87,434	$ 89,284	$ 83,753	$ 90,697	$ 86,597	$ 92,149	$ 87,091	$ 173,037	$ 179,240	$ 260,471	$ 265,837	$ 353,890	$ 356,534	$ 354,425
United States
Net Sales by Geography
Net sales													283,519	280,611	280,161
International
Net Sales by Geography
Net sales													67,531	71,746	68,219
Supply Agreement
Net Sales by Geography
Net sales													$ 2,840	$ 4,177	$ 6,045

X

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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- References

No definition available.

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