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Note 13 - Subsequent Event (Details Textual) - USD ($) $ in Thousands, shares in Millions	1 Months Ended			3 Months Ended		9 Months Ended
	Jun. 11, 2018	Feb. 03, 2018	Jan. 28, 2017	May 05, 2018	Apr. 29, 2017	May 05, 2018
Stock Repurchased and Retired During Period, Value		$ 4,597		$ 732
The August 2017 Share Repurchase Program [Member]
Stock Repurchased and Retired During Period, Shares						1.1
Stock Repurchased and Retired During Period, Value						$ 10,000
The August 2017 Share Repurchase Program [Member] | Subsequent Event [Member]
Stock Repurchased and Retired During Period, Shares	41,000.0
Stock Repurchased and Retired During Period, Value	$ 300
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 9,700

X

- Definition

Amount remaining of a stock repurchase plan authorized.

+ References

No definition available.

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X

- Definition

Number of shares that have been repurchased and retired during the period.

+ References

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-Topic 210
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- Definition

Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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