Note 2 - Acquisition (Tables)

12 Months Ended

Dec. 31, 2014

Business Combinations [Abstract]

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

Cash paid at the Acquisition Date	$	11,735
Contingent consideration		2,507
Total	$	14,242

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

Cash	$	145
Other tangible assets acquired, net of liabilities assumed		42
Intangible assets:
Know-how		1,018
Developed technologies		4,421
IPR&D		2,045
Total identifiable net assets acquired		7,671
Goodwill		6,571
Total net assets acquired	$	14,242

Business Acquisition, Pro Forma Information [Table Text Block]

	Year Ended December 31,
	2014		2013
Revenue	$	282,584	$	238,181
Net income	$	33,777	$	20,187
Diluted net income per share	$	0.85	$	0.52