Note 12 - Summary of Significant Accounting Policies (Details Textual) - December 31, 2016 [Member]	3 Months Ended
	Mar. 31, 2017 USD ($)
Reclassification of Deferred Tax Assets from Current Assets to Noncurrent Assets [Member]
Prior Period Reclassification Adjustment	$ 471,000
Reclassification of Deferred Tax Liabilities to Noncurrent Assets [Member]
Prior Period Reclassification Adjustment	$ 2,389,000