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Consolidated Condensed Financial Statements - Inventory (Details) (USD $)
In Thousands, unless otherwise specified
May 31, 2014
Nov. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Raw materials $ 107,548 $ 80,741
Work in process 40,624 34,402
Finished products 126,327 103,643
Inventories $ 274,499 $ 218,786