Computation of Earnings Per Share (Tables)

6 Months Ended

Nov. 30, 2012

Computation of Earnings Per Share [Abstract]

Reconciliation of the denominator used in the computation of basic and diluted earnings per share

	Three Months Ended				Six Months Ended
	November 30,				November 30,
	2012		2011		2012		2011
Denominator:
Denominator for basic earnings per share - weighted average common shares outstanding		23,988		23,981		23,994		23,981
Dilutive effect of restricted stock		237		168		227		158
Diluted shares used in per share calculation		24,225		24,149		24,221		24,139
Net income	$	6,239	$	6,019	$	11,325	$	14,524
Earnings per share:
Basic	$	0.26	$	0.25	$	0.47	$	0.61
Diluted	$	0.26	$	0.25	$	0.47	$	0.60