Note 12 - Commitments and Contingencies (Details) - USD ($)	1 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Note 12 - Commitments and Contingencies (Details) [Line Items]
Lease Purchase Option	$ 1,700,000
Operating Leases, Rent Expense		$ 1,800,000	$ 1,500,000	$ 1,200,000
Indemnification Agreement [Member]
Note 12 - Commitments and Contingencies (Details) [Line Items]
Other Liabilities		$ 0
Minimum [Member]
Note 12 - Commitments and Contingencies (Details) [Line Items]
Warranty Term		1 year
Maximum [Member]
Note 12 - Commitments and Contingencies (Details) [Line Items]
Warranty Term		2 years