Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Aug. 31, 2012	Aug. 31, 2011
Cash flows from operating activities:
Net income	$ 5,086	$ 8,505
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	14,358	12,835
Remeasurement loss on foreign currency	19	66
Provision for losses on accounts receivable	100	6
Gain on sale of rental and lease equipment	(2,644)	(2,412)
Gain on bargain purchase, net of deferred taxes		(3,194)
Stock compensation expense	289	326
Excess tax benefit for share based compensation	(90)	(37)
Deferred income taxes	(554)	2,384
Change in operating assets and liabilities:
Accounts receivable	1,716	(1,434)
Other assets	1,645	2,080
Accounts payable	(116)	(1,883)
Accrued expenses	1,357	(1,417)
Deferred revenue	(166)	440
Net cash provided by operating activities	21,000	16,265
Cash flows from investing activities:
Proceeds from sale of rental and lease equipment	6,308	5,456
Cash paid for acquisition		(10,673)
Payments for purchase of rental and lease equipment	(19,821)	(24,130)
Payments for purchase of other property	(109)	(108)
Net cash used in investing activities	(13,622)	(29,455)
Cash flows from financing activities:
Minimum tax withholdings on share based compensation	(36)
Excess tax benefit for share based compensation	90	37
Payment of dividends	(4,865)	(4,796)
Net cash used in financing activities	(4,811)	(4,759)
Effect of exchange rate changes on cash	(178)	0
Net increase in cash and cash equivalents	2,389	(17,949)
Cash and cash equivalents at beginning of period	9,290	41,441
Cash and cash equivalents at end of period	$ 11,679	$ 23,492