Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

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

		December 31, 2014						December 31, 2013
	Fair Value Hierarchy	Cost		Unrealized Gain		Fair Value		Cost		Unrealized (Loss) Gain			Fair Value
Asset Backed	Level 2	$	96	$	7	$	103	$	460	$	(4	)	$	456
Corporate Bonds	Level 2		76		-		76		164		1			165
US Treasuries	Level 2		3,400		-		3,400		4,500		-			4,500
Total		$	3,572	$	7	$	3,579	$	5,124	$	(3	)	$	5,121

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

	Balance at							Balance
	Beginning		Charged to					at End
Year Ended December 31:	of Period		Expense		Recoveries			of Period
2014	$	17	$	13	$	(17	)	$	13
2013	$	17	$	13	$	(13	)	$	17
2012	$	18	$	1	$	(2	)	$	17

Schedule of Inventory, Current [Table Text Block]

	Years ended December 31,
	2014		2013
Raw Materials	$	1,510	$	2,108
Work-in-Process		467		903
Finished Goods		159		321
Total	$	2,136	$	3,332

Property, Plant and Equipment [Table Text Block]

Year ended December 31:	Depreciation Expense
2014	$	284
2013	$	129
2012	$	200

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
2014	$	65	$	3,560
2013	$	92	$	3,495
2012	$	177	$	3,401