Note 14 - Stockholders' Equity (Tables)

12 Months Ended

Aug. 31, 2019

Notes Tables

Dividends Declared [Table Text Block]

Year Ended	Dividends per Share of Common Stock		Record Date	Total amount (in thousands)		Payment Date
Fiscal 2019
First Quarter	$	0.64	November 30, 2018	$	24,372	December 18, 2018
Second Quarter	$	0.64	February 28, 2019	$	24,385	March 19, 2019
Third Quarter	$	0.72	May 31, 2019	$	27,506	June 18, 2019
Fourth Quarter	$	0.72	August 30, 2019	$	27,445	September 19, 2019
Fiscal 2018
First Quarter	$	0.56	November 30, 2017	$	21,902	December 19, 2017
Second Quarter	$	0.56	February 28, 2018	$	21,799	March 20, 2018
Third Quarter	$	0.64	May 31, 2018	$	24,566	June 19, 2018
Fourth Quarter	$	0.64	August 31, 2018	$	24,443	September 18, 2018