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Note 8 - Stockholders' Equity - Schedule of Dividends Payable (Details) - $ / shares					12 Months Ended
	Jul. 25, 2018	Apr. 25, 2018	Jan. 24, 2018	Nov. 20, 2017	Aug. 31, 2018	Aug. 31, 2017
Declaration date	Jul. 25, 2018	Apr. 25, 2018	Jan. 24, 2018	Nov. 20, 2017
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.40	$ 0
Record date	Aug. 08, 2018	May 09, 2018	Feb. 08, 2018	Dec. 08, 2017
Payable date	Aug. 22, 2018	May 23, 2018	Feb. 21, 2018	Dec. 21, 2017

X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

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Date the dividend to be paid was declared, in CCYY-MM-DD format.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
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- Definition

Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

+ References

No definition available.

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