Note 4 - Fair Value Measures (Tables)

6 Months Ended

Feb. 29, 2016

Notes Tables

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

	Fair Value Measurements at February 29, 2016
(in thousands)	Level 1		Level 2		Level 3		Total
Assets
Corporate money market funds (1)	$	92,369	$	—	$	—	$	92,369
Certificates of deposit (2)		—		22,931		—		22,931
Total assets measured at fair value	$	92,369	$	22,931	$	—	$	115,300
Liabilities
Derivative instruments (3)	$	—	$	4,114	$	—	$	4,114
Total liabilities measured at fair value	$	—	$	4,114	$	—	$	4,114

	Fair Value Measurements at August 31, 2015
(in thousands)	Level 1		Level 2		Level 3		Total
Assets
Corporate money market funds (1)	$	89,443	$	—	$	—	$	89,443
Certificates of deposit (2)		—		23,497		—		23,497
Derivative instruments (3)		—		1,035		—		1,035
Total assets measured at fair value	$	89,443	$	24,532	$	—	$	113,975
Liabilities
Derivative instruments (3)	$	—	$	1,602	$	—	$	1,602
Total liabilities measured at fair value	$	—	$	1,602	$	—	$	1,602