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Note 11 - Stock-Based Compensation (Detail) - Allocation of Share-Based Compensation Expense (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Cost of Sales [Member]
Allocated Share-Based Compensation Expense	$ 2	$ 3	$ 4	$ 6
Selling Expense [Member]
Allocated Share-Based Compensation Expense	2	5	4	10
Engineering and Product Development Expense [Member]
Allocated Share-Based Compensation Expense	6	13	12	26
General and Administrative Expense [Member]
Allocated Share-Based Compensation Expense	24	18	41	45
Total [Member]
Allocated Share-Based Compensation Expense	$ 34	$ 39	$ 61	$ 87

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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