Basis of Presentation, Business Description and Summary of Significant Accounting Policies (Tables)

12 Months Ended

May 31, 2017

Accounting Policies [Abstract]

Property, plant and equipment

Property, plant and equipment are stated at cost, less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the assets. Refer below for useful lives by category:

	Estimated useful lives
Building and building improvements	39 years
Machinery and equipment	3 to 8 years
Computer software and equipment	3 to 10 years

roperty, plant and equipment are summarized as follows:

	May 31, 2017			May 31, 2016
(in thousands)
Building and building improvements	$	40,597		$	39,585
Machinery and equipment	25,434			24,078
Computer software and equipment	25,668			24,691
Construction in progress	1,464			1,743
	93,163			90,097
Less accumulated depreciation and amortization	(49,652		)	(43,536		)
	43,511			46,561
Land and land improvements	1,723			1,723
	$	45,234		$	48,284