Note 4 - Fair Value Measures (Tables)

9 Months Ended

May 31, 2017

Notes Tables

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

	Fair Value Measurements at May 31, 2017
(in thousands)	Level 1		Level 2		Level 3		Total
Assets
Corporate money market funds (1)	$	22,106	$	—	$	—	$	22,106
Mutual funds (2)		—		15,542		—		15,542
Certificates of deposit ( 3 )		—		16,385		—		16,385
Derivative instruments (4 )		—		5,468		—		5,468
Total assets measured at fair value	$	22,106	$	37,396	$	—	$	59,502
Liabilities
Derivative instruments ( 4 )	$	—	$	596	$	—	$	596
Total liabilities measured at fair value	$	—	$	596	$	—	$	596

	Fair Value Measurements at August 31, 2016
(in thousands)	Level 1		Level 2		Level 3		Total
Assets
Corporate money market funds (1)	$	92,765	$	—	$	—	$	92,765
Certificates of deposit ( 3 )		—		24,217		—		24,217
Derivative instruments ( 4 )		—		869		—		869
Total assets measured at fair value	$	92,765	$	25,086	$	—	$	117,851
Liabilities
Derivative instruments ( 4 )	$	—	$	2,791	$	—	$	2,791
Total liabilities measured at fair value	$	—	$	2,791	$	—	$	2,791