Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	May 31, 2012	May 31, 2011
Assets
Cash and cash equivalents	$ 9,290	$ 41,441
Accounts receivable, net of allowance for doubtful accounts of $522 and $602	35,915	30,616
Rental and lease equipment, net of accumulated depreciation of $204,108 and $191,160	243,173	195,632
Other property, net of accumulated depreciation and amortization of $17,832 and $16,825	13,871	14,127
Goodwill	3,109	3,109
Intangibles, net of amortization of $1,304 and $2,201	1,201	1,214
Other assets	23,272	19,788
Total assets	329,831	305,927
Liabilities:
Accounts payable	8,555	8,237
Accrued expenses	11,870	10,437
Deferred revenue	6,904	5,874
Deferred tax liability	54,371	41,004
Total liabilities	81,700	65,552
Commitments and contingencies (Note 11)
Shareholders' equity:
Preferred stock, $1 par - shares authorized 1,000,000; none issued
Common stock, no par - shares authorized 40,000,000; issued and outstanding 2012 - 23,987,826; 2011 - 23,980,581	36,179	34,742
Retained earnings	211,952	205,633
Total shareholders' equity	248,131	240,375
Total liabilities and shareholders' equity	$ 329,831	$ 305,927