Note 22 - Commitments and Contingencies (Tables)

12 Months Ended

May 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

Year Ended May 31:
2015	$	4,345
2016		4,102
2017		3,774
2018		3,601
2019		3,129
Thereafter		12,915
	$	31,866

Long-term Purchase Commitment [Table Text Block]

Year Ended May 31:
2015	$	21,640
2016		6,823
2017		3,799
2018		3,928
2019		4,083