Note 14 - Employee Stock Option and Retirement Plans - Changes to the Current Estimate of the Vesting Percentage and Related Expense (Details) $ in Thousands	9 Months Ended
	May 31, 2017 USD ($)
Performance-based Options, Two Year Measurement Period [Member] | Code Red, Inc. [Member] | Share-based Compensation Award, Tranche One [Member]
Remaining Expense to be Recognized
Cumulative Catch-up Adjustment	(694)	[1]
Performance-based Options, Two Year Measurement Period [Member] | Code Red, Inc. [Member] | Share-based Compensation Award, Tranche Two [Member]
Remaining Expense to be Recognized	127
Cumulative Catch-up Adjustment	(520)	[1]
Performance-based Options, Two Year Measurement Period [Member] | Code Red, Inc. [Member] | Share-based Compensation Award, Tranche Three [Member]
Remaining Expense to be Recognized	506
Cumulative Catch-up Adjustment		[1]
Performance-based Options, Two Year Measurement Period [Member] | Code Red, Inc. [Member] | Share-based Compensation Award, Tranche Four [Member]
Remaining Expense to be Recognized	886
Cumulative Catch-up Adjustment	520	[1]
Performance-based Options, Two Year Measurement Period [Member] | Code Red, Inc. [Member] | Share-based Compensation Award, Tranche Five [Member]
Remaining Expense to be Recognized	1,265
Cumulative Catch-up Adjustment	1,041	[1]
Performance-based Options, Four Year Measurement Period [Member] | Code Red, Inc. [Member] | Share-based Compensation Award, Tranche One [Member]
Remaining Expense to be Recognized
Cumulative Catch-up Adjustment		[1]
Performance-based Options, Four Year Measurement Period [Member] | Code Red, Inc. [Member] | Share-based Compensation Award, Tranche Two [Member]
Remaining Expense to be Recognized	8,269
Cumulative Catch-up Adjustment	3,981	[1]
Performance-based Options, Four Year Measurement Period [Member] | Code Red, Inc. [Member] | Share-based Compensation Award, Tranche Three [Member]
Remaining Expense to be Recognized	11,577
Cumulative Catch-up Adjustment	5,574	[1]
Performance-based Options, Four Year Measurement Period [Member] | Code Red, Inc. [Member] | Share-based Compensation Award, Tranche Four [Member]
Remaining Expense to be Recognized	16,538
Cumulative Catch-up Adjustment	7,963	[1]
Performance Shares [Member] | Portware LLC [Member] | Share-based Compensation Award, Tranche One [Member]
Remaining Expense to be Recognized
Cumulative Catch-up Adjustment		[1]
Performance Shares [Member] | Portware LLC [Member] | Share-based Compensation Award, Tranche Two [Member]
Remaining Expense to be Recognized	417
Cumulative Catch-up Adjustment	83	[1]
Performance Shares [Member] | Portware LLC [Member] | Share-based Compensation Award, Tranche Three [Member]
Remaining Expense to be Recognized	583
Cumulative Catch-up Adjustment	116	[1]
Performance Shares [Member] | Portware LLC [Member] | Share-based Compensation Award, Tranche Four [Member]
Remaining Expense to be Recognized	833
Cumulative Catch-up Adjustment	166	[1]
Performance Shares, Additional Granted [Member] | Portware LLC [Member] | Share-based Compensation Award, Tranche One [Member]
Remaining Expense to be Recognized
Cumulative Catch-up Adjustment		[1]
Performance Shares, Additional Granted [Member] | Portware LLC [Member] | Share-based Compensation Award, Tranche Two [Member]
Remaining Expense to be Recognized	2,502
Cumulative Catch-up Adjustment	$ 202	[1]

[1] Amounts represent the cumulative catch-up adjustment to be recorded if there was a change in the vesting percentage as of May 31, 2017.