Note 11 - Intangible Assets - Intangible Assets Acquired (Details) - USD ($)		12 Months Ended
	Oct. 16, 2015	Aug. 31, 2017
Amortization period (Year)		11 years 182 days
Acquisition cost		$ 93,200,000
Portware LLC [Member]
Amortization period (Year)		11 years 182 days
Acquisition cost	$ 75,500,000	$ 93,194,000
Portware LLC [Member] | Customer Relationships [Member]
Amortization period (Year)		16 years 36 days
Acquisition cost		$ 50,152,000
Portware LLC [Member] | Software Technology [Member]
Amortization period (Year)		6 years 109 days
Acquisition cost		$ 40,826,000
Portware LLC [Member] | Noncompete Agreements [Member]
Amortization period (Year)		3 years 36 days
Acquisition cost		$ 862,000
Portware LLC [Member] | Trade Names [Member]
Amortization period (Year)		4 years
Acquisition cost		$ 1,354,000