Note 4 - Fair Value Measures (Tables)

12 Months Ended

Aug. 31, 2018

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	Fair Value Measurements at August 31, 2018
(in thousands)	Level 1		Level 2		Level 3		Total
Assets
Corporate money market funds (1)	$	75	$	—	$	—	$	75
Mutual Funds (2)		—		18,668		—		18,668
Certificates of deposit (3 )		—		10,591		—		10,591
Derivative instruments (4 )		—		90		—		90
Total assets measured at fair value	$	75	$	29,349	$	—	$	29,424
Liabilities
Derivative instruments ( 4 )	$	—	$	4,036	$	—	$	4,036
Total liabilities measured at fair value	$	—	$	4,036	$	—	$	4,036

	Fair Value Measurements at August 31, 2017
(in thousands)	Level 1		Level 2		Level 3		Total
Assets
Corporate money market funds (1)	$	26,677	$	—	$	—	$	26,677
Mutual Funds (2)		—		18,364		—		18,364
Certificates of deposit ( 3 )		—		14,080		—		14,080
Derivative instruments ( 4 )		—		6,142		—		6,142
Total assets measured at fair value	$	26,677	$	38,586	$	—	$	65,263
Liabilities
Derivative instruments ( 4 )	$	—	$	—	$	—	$	—
Total liabilities measured at fair value	$	—	$	—	$	—	$	—