Note 5 - Segment Information (Details) - Customers with Sales Greater than 10% (Customer Concentration Risk [Member], Sales Revenue, Net [Member])	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Customer A [Member]
Revenue, Major Customer [Line Items]
Customers	26.00%	34.00%
Customer B [Member]
Revenue, Major Customer [Line Items]
Customers	10.00%		[1]

[1] Represents less than 10%.