Note 3 - Acquisition (Tables)

12 Months Ended

Dec. 31, 2014

Business Combinations [Abstract]

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

Purchase price paid	$	5,091
Assets (liabilities acquired):
Inventory		1,552
Customer relationship intangible assets		2,510
Other identified intangible assets		780
Goodwill		1,339
Deferred service revenue		(780	)
Accrued warranty liability		(310	)
Total	$	5,091