Note 6 - Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

	December 31,
	2014			2013
Laboratory and production equipment	$	48,522		$	34,443
Office, software and computer equipment		15,855			8,649
Furniture and fixtures		1,762			834
Leasehold improvements		5,212			3,952
		71,351			47,878
Less accumulated depreciation		(35,853	)		(25,418	)
	$	35,498		$	22,460