Note 11 - Deferred Revenue (Tables)

12 Months Ended

May 31, 2014

Deferred Revenue Disclosure [Abstract]

Deferred Revenue, by Arrangement, Disclosure [Table Text Block]

	For the Years Ended May 31
	2014			2013
Balance at beginning of year	$	2,413			3,037
Additions to deferred revenue from new contracts		8,658			7,843
Revenue recognized during the year		(8,246	)		(8,496	)
Foreign currency translation adjustment		74			29
Balance at end of year		2,899			2,413
Less current portion		(2,813	)		(2,252	)
Deferred revenue, net of current portion	$	86			161