Note 9 - Acquisition (Tables)

9 Months Ended

Sep. 30, 2014

Business Combinations [Abstract]

Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table Text Block]

Cash consideration	$	1,724
Estimated fair value of contingent consideration		1,247
Total consideration transferred	$	2,971

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

Assets acquired:
Cash	$	8
Accounts receivable		15
Inventory		40
Prepaid expenses and other		12
Property and equipment		359
In-process research and development		2,627
Total assets acquired		3,061
Liabilities assumed:
Accounts payable		(97	)
Accrued liabilities		(14	)
Other current liabilities		(34	)
Total liabilities assumed		(145	)
Net assets acquired		2,916
Add: goodwill		55
Total consideration transferred	$	2,971

Business Acquisition, Pro Forma Information [Table Text Block]

	Pro Forma
	Three months ended September 30,						Nine months ended September 30,
(in thousands, except share and per share data)	2014			2013			2014			2013
Total revenues	$	13,335		$	10,772		$	37,459		$	28,663
Net loss	$	(5,987	)	$	(3,508	)	$	(15,707	)	$	(6,204	)
Net loss per share—basic and diluted	$	(0.35	)	$	(1.50	)	$	(0.91	)	$	(2.75	)
Weighted average shares outstanding—basic and diluted	$	17,333,441		$	2,331,990		$	17,300,881		$	2,256,494