Note 14 - Share-based Compensation (Tables)

3 Months Ended

Aug. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

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

	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (years)		Aggregate Intrinsic Value (1)
Service-based options outstanding at May 31, 2015		158,329		$	100.00
Granted		279,247			100.00
Exercised		-			-
Forfeited		(3,000	)		100.00
Expired or cancelled		-			100.00
Service-based options outstanding at August 31, 2015		434,576			100.00		8.8	$	-
Exercisable at August 31, 2015		107,633		$	100.00		6.6	$	-

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

	Number of Shares		Weighted-Average Grant-Date Fair Value
Nonvested restricted stock units outstanding at May 31, 2015		2,400	$	84.55
Granted		34,566		104.24
Vested		-		-
Forfeited		-		-
Nonvested restricted stock units outstanding at August 31, 2015		36,966	$	102.98