SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND PRACTICES (Tables)

12 Months Ended

May. 31, 2015

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

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


	Twelve Months Ended May 31, 2015
	MS			IHT			Quest Integrity			Total
Balance at beginning of year	$	19,685		$	63,249		$	30,829		$	113,763
Acquisitions		103			—			—			103
Foreign currency adjustments		(2,322	)		(2,512	)		(1,259	)		(6,093	)

Balance at May 31, 2015	$	17,466		$	60,737		$	29,570		$	107,773


	Twelve Months Ended May 31, 2014
	MS		IHT			Quest Integrity		Total
Balance at beginning of year	$	19,131	$	53,800		$	30,535	$	103,466
Acquisitions		—		10,386			—		10,386
Foreign currency adjustments		554		(937	)		294		(89	)

Balance at May 31, 2014	$	19,685	$	63,249		$	30,829	$	113,763

Information regarding the change in carrying value of the non-controlling interest is set forth below (in thousands):


Carrying value of non-controlling interest at May 31, 2014	$	5,678
Income attributable to non-controlling interest		427
Other comprehensive income attributable to non-controlling interest		(71	)

Carrying value of non-controlling interest at May 31, 2015	$	6,034

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


	Twelve Months Ended May 31,
	2015		2014		2013
Weighted-average number of basic shares outstanding		20,500		20,439		20,203
Stock options, stock units and performance awards		419		633		759
Assumed conversion of non-controlling interest		732		213		204

Total shares and dilutive securities		21,651		21,285		21,166