Note 6 - Deferred Service Contract Revenue (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013	Jun. 30, 2014 Nonsoftware Service, Support and Maintenance Arrangement [Member]	Jun. 30, 2014 Nonsoftware Service, Support and Maintenance Arrangement [Member]
Note 6 - Deferred Service Contract Revenue (Details) [Line Items]
Deferred Revenue, Costs Incurred	$ 1.8	$ 3.5	$ 1.8	$ 3.5