Note 12 - Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

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

2015	$	1,094
2016		763
2017		297
2018 and thereafter		168
Total	$	2,322

Schedule of Product Warranty Liability [Table Text Block]

	Year Ended December 31,
	2014			2013			2012
Balance at beginning of period	$	451		$	331		$	561
Warranty provision for product sales		282			476			917
Settlements made		(42	)		(117	)		(675	)
Unused warranty provision		(451	)		(239	)		(472	)
Balance at end of period	$	240		$	451		$	331