Note 6 - Goodwill (Tables)

9 Months Ended

Feb. 28, 2014

Disclosure Text Block Supplement [Abstract]

Schedule of Goodwill [Table Text Block]

	February 28, 2014		May 31, 2013
Balance at beginning of period	$	1,003,463		966,338
Additions:
Acquisition of businesses		1,089		36,889
Foreign currency translation adjustment		1,226		236
Balance at end of period	$	1,005,778		1,003,463