Note 9 - Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2012

Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block]

	Payments by Period
	Total		2013		2014		2015		2016		Thereafter
Operating leases	$	1,165	$	912	$	206	$	45	$	2	$	-
Outstanding purchase commitments		15,542		15,542		-		-		-		-
	$	16,707	$	16,454	$	206	$	45	$	2	$	-

Schedule of Product Warranty Liability [Table Text Block]

	Year Ended December 31,
	2012			2011			2010
Balance at beginning of year	$	561		$	764		$	294
Warranty provision for product sales		917			870			801
Settlements made during the period		(675	)		(626	)		(107	)
Unused warranty provision		(472	)		(447	)		(224	)
Balance at end of period	$	331		$	561		$	764