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Note 5 - Derivative Instruments (Details)
€ in Millions, £ in Millions, PHP in Millions, ₨ in Billions
3 Months Ended 9 Months Ended
May. 31, 2015
USD ($)
May. 31, 2014
USD ($)
May. 31, 2015
USD ($)
May. 31, 2014
USD ($)
May. 31, 2015
INR (₨)
May. 31, 2015
PHP
May. 31, 2015
GBP (£)
May. 31, 2015
EUR (€)
Aug. 31, 2014
USD ($)
Note 5 - Derivative Instruments (Details) [Line Items]                  
Gain (Loss) on Discontinuation of Foreign Currency Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net $ 0 $ 0 $ 0 $ 0          
Through the Fourth Quarter of Fiscal 2017 [Member] | India, Rupees                  
Note 5 - Derivative Instruments (Details) [Line Items]                  
Percent of Foreign Exchange Contracts Hedged     75.00%            
Through the Fourth Quarter of Fiscal 2015 [Member] | Philippines, Pesos                  
Note 5 - Derivative Instruments (Details) [Line Items]                  
Percent of Foreign Exchange Contracts Hedged     50.00%            
Through the Second Quarter of Fiscal 2016 [Member] | United Kingdom, Pounds                  
Note 5 - Derivative Instruments (Details) [Line Items]                  
Percent of Foreign Exchange Contracts Hedged     50.00%            
Through the Second Quarter of Fiscal 2016 [Member] | Euro Member Countries, Euro                  
Note 5 - Derivative Instruments (Details) [Line Items]                  
Percent of Foreign Exchange Contracts Hedged     50.00%            
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Cash Flow Hedging [Member]                  
Note 5 - Derivative Instruments (Details) [Line Items]                  
Derivative Asset, Notional Amount 88,215,000   $ 88,215,000   ₨ 3.3 PHP 135.2 £ 15.0 € 13.0 $ 44,979,000
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred     500,000            
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | India, Rupees | Cash Flow Hedging [Member]                  
Note 5 - Derivative Instruments (Details) [Line Items]                  
Derivative Asset, Notional Amount 47,860,000   47,860,000           38,479,000
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Philippines, Pesos | Cash Flow Hedging [Member]                  
Note 5 - Derivative Instruments (Details) [Line Items]                  
Derivative Asset, Notional Amount 3,000,000   3,000,000           6,500,000
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | United Kingdom, Pounds | Cash Flow Hedging [Member]                  
Note 5 - Derivative Instruments (Details) [Line Items]                  
Derivative Asset, Notional Amount 22,618,000   22,618,000           0
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Euro Member Countries, Euro | Cash Flow Hedging [Member]                  
Note 5 - Derivative Instruments (Details) [Line Items]                  
Derivative Asset, Notional Amount $ 14,737,000   $ 14,737,000           $ 0