Contingencies	9 Months Ended
Feb. 28, 2015
Contingencies [Abstract]
Contingencies	4. Contingencies Financial Instruments The Company maintained cash collateralized standby letters of credit (“LOC”) with banks totaling $3.3 million at February 28, 2015. The cash collateralizing the LOCs is included in the line item “Other assets” in the Condensed Consolidated Balance Sheets. The outstanding LOCs are for the benefit of certain insurance companies. None of the LOCs are recorded as a liability on the consolidated balance sheets. Legal Contingencies The Company is a defendant in certain legal actions, and intends to vigorously defend its position in these actions. If the Company’s assessment of a contingency indicates it is probable a material loss has been incurred and the amount of the liability can be reasonably estimated, the estimated liability is accrued in the Company’s financial statements. If the assessment indicates a potentially material loss contingency is not probable, but is reasonably possible, or is probable but cannot be reasonably estimated, then the nature of the contingent liability, together with an estimate of the possible loss or range of possible loss will be disclosed, or a statement will be made that such an estimate cannot be made. These legal actions are discussed in detail at Part II, Item 1, of this report.

Contingencies

9 Months Ended

Feb. 28, 2015

4. Contingencies

Financial Instruments

The Company maintained cash collateralized standby letters of credit (“LOC”) with banks totaling $3.3 million at February 28, 2015. The cash collateralizing the LOCs is included in the line item “Other assets” in the Condensed Consolidated Balance Sheets. The outstanding LOCs are for the benefit of certain insurance companies. None of the LOCs are recorded as a liability on the consolidated balance sheets.

Legal Contingencies

The Company is a defendant in certain legal actions, and intends to vigorously defend its position in these actions. If the Company’s assessment of a contingency indicates it is probable a material loss has been incurred and the amount of the liability can be reasonably estimated, the estimated liability is accrued in the Company’s financial statements. If the assessment indicates a potentially material loss contingency is not probable, but is reasonably possible, or is probable but cannot be reasonably estimated, then the nature of the contingent liability, together with an estimate of the possible loss or range of possible loss will be disclosed, or a statement will be made that such an estimate cannot be made.

These legal actions are discussed in detail at Part II, Item 1, of this report.