Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

		December 31, 2012						December 31, 2011
	Fair Value Hierarchy	Cost		Unrealized Gain		Estimated Fair Value		Cost		Unrealized Gain		Estimated Fair Value
Asset Backed	Level 2	$	952	$	3	$	955	$	2,136	$	2	$	2,138
Corporate Bonds	Level 2		698		1		699		616		1		617
US Treasuries	Level 2		3,200		-		3,200		1,600		-		1,600
Total		$	4,850	$	4	$	4,854	$	4,352	$	3	$	4,355

Allowance for Credit Losses on Financing Receivables [Table Text Block]

Year Ended December 31:	Balance at Beginning of Period		Charged to Expense		(Write-offs) Net of Recoveries			Balance at End of Period
2012	$	18	$	1	$	(2	)	$	17
2011	$	23	$	-	$	(5	)	$	18
2010	$	41	$	-	$	(18	)	$	23

Schedule of Inventory, Current [Table Text Block]

	Years ended December 31,
	2012		2011
Raw Materials	$	1,616	$	1,231
Work-in-Process		462		214
Finished Goods		141		111
Total	$	2,219	$	1,556

Property, Plant and Equipment [Table Text Block]

Year ended December 31:	Depreciation Expense
2012	$	200
2011	$	217
2010	$	278

Property, Plan and Equipment, Estimated Useful Lives [Table Text Block]

Machinery and equipment (years)	3 -5
Leasehold improvements	Term of the respective leases
Furniture and fixtures (years)	3 -10

Capitalized Software Amortization [Table Text Block]

Year ended December 31:	Amortization Expense		Accumulated Amortization
2012		$   177		$   3,401
2011		$   348		$   3,306
2010		$   447		$   2,945