Summary of Significant Accounting Policies and Practices (Tables)

12 Months Ended

May 31, 2013

Estimated Useful Lives of Assets

Depreciation and amortization of assets are computed by the straight-line method over the following estimated useful lives of the assets:

Classification	Useful Life
Buildings		20-40 years
Leasehold improvements		2-15 years
Machinery and equipment		2-12 years
Furniture and fixtures		2-10 years
Computers and computer software		2-5 years
Automobiles		2-5 years

Summary of Goodwill

A summary of goodwill is as follows (in thousands):

	Twelve Months Ended May 31, 2013							Twelve Months Ended May 31, 2012
	TCM Division		TMS Division			Total		TCM Division			TMS Division			Total
Balance at beginning of year	$	75,131	$	19,871		$	95,002	$	76,872		$	12,648		$	89,520
Acquisitions		9,009		(1,221	)		7,788		—			8,926			8,926
Foreign currency adjustments		195		481			676		(1,741	)		(1,703	)		(3,444	)
Balance at end of year	$	84,335	$	19,131		$	103,466	$	75,131		$	19,871		$	95,002

Amounts Used In Basic and Diluted Earnings Per Share

Amounts used in basic and diluted earnings per share, for all periods presented, are as follows (in thousands):

	Twelve Months Ended May 31,
	2013		2012		2011
Weighted-average number of basic shares outstanding		20,203		19,667		19,206
Stock options, stock units and performance awards		759		758		728
Assumed conversion of non-controlling interest		204		235		149
Total shares and dilutive securities		21,166		20,660		20,083