Note 4. Inventories (Detail) - Inventory (USD $) In Thousands, unless otherwise specified	May 31, 2012	May 31, 2011
	$ 33,370	$ 32,914
Successor [Member]
Raw materials and supplies	10,228
Work in process	3,550
Finished goods	19,592
	33,370
Predecessor [Member]
Raw materials and supplies		9,506
Work in process		4,012
Finished goods		19,396
		$ 32,914