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Note 4 - Stock Benefit Plans (Detail) - Stock-based Compensation Expenses (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 01, 2011	Jun. 30, 2012	Jul. 01, 2011
Stock-based compensation expense by caption:
Stock-based compensation	$ 411	$ 452	$ 436	$ 460
Stock Options [Member]
Stock-based compensation expense by caption:
Stock-based compensation	26	12	42	16
Restricted Stock [Member]
Stock-based compensation expense by caption:
Stock-based compensation	385	440	394	444
Selling, Marketing, and Administrative [Member]
Stock-based compensation expense by caption:
Stock-based compensation	$ 411	$ 452	$ 436	$ 460

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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