Note 13 - Commitments and Contingencies (Details) - The Accrual for Warranty Claims (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2013	Dec. 31, 2012
The Accrual for Warranty Claims [Abstract]
Beginning balance - January 1,	$ 1,679	$ 1,537	$ 1,537
Provision charged to warranty expense	136
Less: warranty claims	(20)
Ending balance – June 30,	1,795	1,537	1,537
Current portion of warranty liability	200	200
Non-current portion of warranty liability	$ 1,595	$ 1,337