Note 13 - Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

	2014			2013
Beginning balance - January 1,	$	1,537		$	1,537
Provision charged to warranty expense		119			-
Less: warranty claims		(119	)		-
Ending balance - September 30,		1,537			1,537
Current portion of warranty liability		200			200
Non-current portion of warranty liability	$	1,337		$	1,337