CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Nov. 30, 2014		Nov. 30, 2013		Nov. 30, 2014		Nov. 30, 2013
Revenues:
Rentals and leases	$ 33,469		$ 35,205		$ 67,358		$ 70,862
Sales of equipment and other revenues	26,234		22,671		54,216		47,182
Total revenues	59,703	[1]	57,876	[1]	121,574	[1]	118,044	[1]
Operating expenses:
Depreciation of rental and lease equipment	14,670		14,241		28,585		28,614
Costs of rentals and leases, excluding depreciation	4,547		4,798		9,121		9,610
Costs of sales of equipment and other revenues	19,661		15,699		40,563		33,217
Selling, general and administrative expenses	14,598		14,226		29,619		28,905
Total operating expenses	53,476		48,964		107,888		100,346
Operating profit	6,227		8,912		13,686		17,698
Interest income, net	79		87		182		169
Other income	1,390		0		1,390		0
Income before income taxes	7,696		8,999		15,258		17,867
Income tax provision	2,901		3,418		5,692		6,589
Net income	$ 4,795		$ 5,581		$ 9,566		$ 11,278
Earnings per share:
Basic (in dollars per share)	$ 0.20		$ 0.23		$ 0.39		$ 0.46
Diluted (in dollars per share)	$ 0.20		$ 0.23		$ 0.39		$ 0.46
Shares used in per share calculation:
Basic (in shares)	24,404		24,331		24,380		24,313
Diluted (in shares)	24,408		24,350		24,393		24,340
Cash dividend declared per share (in dollars per share)	$ 0.20		$ 0		$ 0.40		$ 0.40

[1] Revenues by country are based on the shipping destination.