Note 5 - Segment Information (Details) - Customers with Sales Greater than 10% (Sales Revenue, Net [Member], Customer Concentration Risk [Member])	3 Months Ended			6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013		Jun. 30, 2014	Jun. 30, 2013
Customer A [Member]
Revenue, Major Customer [Line Items]
Customers	26.00%	31.00%		26.00%	32.00%
Customer B [Member]
Revenue, Major Customer [Line Items]
Customers		11.00%	[1]	10.00%

[1] Represents less than 10%.