Note 10 - Share-based Employee Compensation (Tables)

12 Months Ended

May 31, 2016

Notes Tables

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

	Stock Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (years)		Aggregate Intrinsic Value
Service-based vesting:
Outstanding at beginning of year		2,441		$	7.78
Cancellations and forfeitures		(270	)		6.51
Expired		(105	)		8.83
Outstanding at end of year		2,066		$	7.89		3.04	$	–
Exercisable at end of year		1,671		$	8.20		2.60	$	–
Market -based vesting:
Outstanding at beginning of year		515		$	8.60
Cancellations and forfeitures		(515	)		8.60
Outstanding at end of year		–		$	–

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	2015			2014
Risk-free interest rate		1.48	%		1.17	%
Expected dividend yield		0	%		0	%
Expected stock price volatility		44.27	%		58.03	%
Expected life (in years)		4.50			4.50

	2014
Risk-free interest rate		0.45	%
Expected dividend yield		0	%
Expected stock price volatility		42.86	%
Expected life (in years)		2.40

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

	2016
	Shares			Weighted Average Fair Value
Service-Based Vesting:
Unvested at beginning of year		803		$	6.98
Granted		344			6.45
Vested		(346	)		7.44
Cancellations and forfeitures		(237	)		7.19
Unvested at end of year		564		$	6.29
Performance-Based Vesting:
Unvested at beginning of year		–		$	–
Granted		262			6.51
Cancellations and forfeitures		(37	)		6.51
Unvested at end of year		225		$	6.51