Note 4 - Fair Value Measures (Tables)

12 Months Ended

Aug. 31, 2014

Disclosure Text Block [Abstract]

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

	Fair Value Measurements at Reporting Date Using
August 31, 2014	Level 1		Level 2		Level 3		Total
Assets
Corporate money market funds (1)	$	75,363	$	0	$	0	$	75,363
Certificates of deposit (2)		0		20,008		0		20,008
Derivative Instruments (3)		0		1,406		0		1,406
Total assets measured at fair value	$	75,363	$	21,414	$	0	$	96,777
Liabilities
Derivative instruments (3)	$	0	$	591	$	0	$	591
Total liabilities measured at fair value	$	0	$	591	$	0	$	591

	Fair Value Measurements at Reporting Date Using
August 31, 2013	Level 1		Level 2		Level 3		Total
Assets
Corporate money market funds (1)	$	156,693	$	0	$	0	$	156,693
Certificates of deposit (2)		0		12,725		0		12,725
Total assets measured at fair value	$	156,693	$	12,725	$	0	$	169,418
Liabilities
Derivative instruments (3)	$	0	$	7,740	$	0	$	7,740
Total liabilities measured at fair value	$	0	$	7,740	$	0	$	7,740