Note 3 - Summary of Significant Accounting Policies - Quantitative Information about Level 3 Fair Value Measurements (Details) - Fair Value, Inputs, Level 3 [Member] - Fair Value, Measurements, Nonrecurring [Member]	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Intangible Assets [Member] | Multi-period Excess Earning [Member]
Discount rate	20.00%	23.00%
Decline in EBIT without non-compete agreement		10.00%
Annual customer attrition rate		15.00%
Goodwill [Member] | Discounted Cash Flow [Member]
Remaining useful life (Year)	5 years	5 years
Discount rate	20.00%	23.00%
Terminal growth rate	3.50%	3.50%
Minimum [Member] | Intangible Assets [Member] | Multi-period Excess Earning [Member]
Remaining useful life (Year)	1 year	1 year
Contributory asset charge	12.90%	12.40%
Maximum [Member] | Intangible Assets [Member] | Multi-period Excess Earning [Member]
Remaining useful life (Year)	9 years 182 days	7 years
Contributory asset charge	24.00%	28.00%