Basis of Presentation (Tables)

9 Months Ended

Feb. 28, 2014

Accounting Policies [Abstract]

Fair Value of Foreign Exchange Forward Contracts

The fair value of our foreign exchange forward contracts in the consolidated balance sheets is shown in the table below:

Derivatives Not Designated as Hedging Instruments	Consolidated Balance Sheet Location	February 28, 2014		May 31, 2013
Foreign exchange forward contracts	Other assets	$	—	$	114
Foreign exchange forward contracts	Accrued expenses	25		—

Losses Recognized in Income for Derivative Instruments

The table below provides data about the amount of losses recognized in income for derivative instruments not designated as hedging instruments:

Derivatives Not Designated as Hedging Instruments	Location of Loss Recognized in Income on Derivatives	Three Months Ended February 28, 2014			Three Months Ended February 28, 2013
Foreign exchange forward contracts	Selling, general and administrative expenses	$	(32	)	$	(64	)
Derivatives Not Designated as Hedging Instruments	Location of Loss Recognized in Income on Derivatives	Nine Months Ended February 28, 2014			Nine Months Ended February 28, 2013
Foreign exchange forward contracts	Selling, general and administrative expenses	$	(266	)	$	(454	)

Summary of Other Assets

Other assets consisted of the following:

	February 28, 2014		May 31, 2013
Net investment in sales-type leases	$	8,784	$	9,437
Demonstration equipment	6,369		6,057
SERP	3,354		2,947
Prepaid expenses and other	3,292		2,905
	$	21,800	$	21,346