Fair Value Measurements (Tables)

9 Months Ended

Feb. 28, 2013

Assets and Liabilities Measured at Fair Value on Recurring Basis

Our assets and liabilities measured at fair value on a recurring basis were determined as follows:

	At February 28, 2013
	Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Balance
Assets
Money market funds	$	1,014	$	—	$	—	$	1,014
Supplemental executive retirement plan		2,932		—		—		2,932
Foreign exchange forward contracts		—		71		—		71
Total assets measured at fair value	$	3,946	$	71	$	—	$	4,017

	At May 31, 2012
	Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Balance
Assets
Money market funds	$	2,507	$	—	$	—	$	2,507
Supplemental executive retirement plan		2,370		—		—		2,370
Foreign exchange forward contracts		—		179		—		179
Total assets measured at fair value	$	4,877	$	179	$	—	$	5,056