Note 16 - Commitments and Contingencies (Details) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 28, 2014	Feb. 28, 2013	Aug. 31, 2013 sqft
Note 16 - Commitments and Contingencies (Details) [Line Items]
Operating Leases, Future Minimum Payments Due	$ 214,797,000		$ 214,797,000
Area of Real Estate Increase (Decrease) (in Square Feet)					11,000
Operating Leases, Rent Expense	9,400,000	9,100,000	18,300,000	18,400,000
Line of Credit Facility, Amount Outstanding					1,800,000
Long-term Purchase Commitment, Amount					50,200,000
Largest Individual Client Percent Of Total Subscriptions	2.00%		2.00%
Percentage Of Subscription From Ten Largest Clients	15.00%		15.00%
Allowance for Doubtful Accounts Receivable	1,700,000		1,700,000		1,600,000
Norwalk, Connecticut [Member]
Note 16 - Commitments and Contingencies (Details) [Line Items]
Area of Real Estate Property (in Square Feet)	193,000		193,000
NEW YORK
Note 16 - Commitments and Contingencies (Details) [Line Items]
Area of Real Estate Property (in Square Feet)	821,000		821,000
Operating Leases, Future Minimum Payments Due	$ 93,700,000		$ 93,700,000