Note 4 - Inventories (Detail) - Inventory (USD $) In Thousands, unless otherwise specified	Aug. 31, 2012	May 31, 2012
	$ 35,139	$ 33,370
Successor [Member]
Raw materials and supplies	9,959
Work in process	3,410
Finished goods	21,770
	35,139
Predecessor [Member]
Raw materials and supplies		10,228
Work in process		3,550
Finished goods		19,592
		$ 33,370