Note 4 - Balance Sheet Components (Details) - Prepaid Expenses and Other Current Assets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Prepaid Expenses and Other Current Assets [Abstract]
Prepaid expenses	$ 2,221	$ 1,607
Refundable tax	271	510
Deferred commissions	815	593
Gain on unsettled foreign currency forward contracts	191	1
Other current assets	1,855	818
Prepaid expenses and other current assets	$ 5,353	$ 3,529