Property, Plant and Equipment (Tables)

12 Months Ended

May 31, 2013

Summary of Property, Plant and Equipment

A summary of property, plant and equipment as of May 31, 2013 and 2012 is as follows (in thousands):

	May 31,
	2013			2012
Land	$	3,108		$	1,285
Buildings and leasehold improvements		18,445			15,095
Machinery and equipment		137,439			121,533
Furniture and fixtures		4,469			2,246
Computers and computer software		8,871			7,980
Automobiles		3,842			2,624
Construction in progress		3,816			1,912
Total		179,990			152,675
Accumulated depreciation and amortization		(105,051	)		(90,634	)
Property, plant, and equipment, net	$	74,939		$	62,041