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Noncash Investing and Financing Activities	6 Months Ended
Nov. 30, 2011
Noncash Investing and Financing Activities [Abstract]
Noncash Investing and Financing Activities	Note 7: Noncash Investing and Financing Activities We had accounts payable and other accruals related to acquired rental and lease equipment totaling $5,313 and $4,860 as of November 30, 2011 and May 31, 2011, respectively, and $4,800 and $6,167 as of November 30, 2010 and May 31, 2010, respectively, all of which amounts were subsequently paid. During the six months ended November 30, 2011 and the fiscal year ended May 31, 2011, we transferred $460 and $520, respectively, of demonstration equipment, included in other assets, to rental and lease equipment. There were no similar activities for the six months ended November 30, 2010 or the fiscal year ended May 31, 2010.

Noncash Investing and Financing Activities

6 Months Ended

Nov. 30, 2011

Noncash Investing and Financing Activities [Abstract]

Noncash Investing and Financing Activities

Note 7: Noncash Investing and Financing Activities

We had accounts payable and other accruals related to acquired rental and lease equipment totaling $5,313 and $4,860 as of November 30, 2011 and May 31, 2011, respectively, and $4,800 and $6,167 as of November 30, 2010 and May 31, 2010, respectively, all of which amounts were subsequently paid. During the six months ended November 30, 2011 and the fiscal year ended May 31, 2011, we transferred $460 and $520, respectively, of demonstration equipment, included in other assets, to rental and lease equipment. There were no similar activities for the six months ended November 30, 2010 or the fiscal year ended May 31, 2010.