Note 5 - Fair Value Measures (Tables)

6 Months Ended

Feb. 28, 2019

Notes Tables

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

	Fair Value Measurements at February 28, 2019
(in thousands)	Level 1		Level 2		Level 3		Total
Assets
Corporate money market funds (1)	$	38,000	$	—	$	—	$	38,000
Mutual funds (2)		—		18,541		—		18,541
Certificates of deposit ( 3 )		—		8,528		—		8,528
Derivative instruments (4 )		—		680		—		680
Total assets measured at fair value	$	38,000	$	27,749	$	—	$	65,749
Liabilities
Derivative instruments (4)	$	—	$	2,293	$	—	$	2,293
Total liabilities measured at fair value	$	—	$	2,293	$	—	$	2,293

	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