Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jan. 27, 2019	Oct. 28, 2018
Statement of Financial Position [Abstract]
Trade accounts receivable, allowances	$ 31	$ 759
Preferred stock, par value (usd per share)	$ 1.00	$ 1.00
Preferred stock, shares authorized (shares)	500,000	500,000
Preferred stock, shares issued (shares)	0	0
Common stock, par value (usd per share)	$ 0.10	$ 0.10
Common stock, shares authorized (shares)	120,000,000	120,000,000
Common stock, shares issued (shares)	23,738,003	23,738,003
Common stock, shares outstanding (shares)	21,191,030	21,179,068
Treasury stock, shares (shares)	2,546,973	2,558,935

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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