Note 10 - Intangible Assets - Estimated Future Amortization Expense (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
2017	$ 5,042,000
2018	4,912,000
2019	4,839,000
2020	4,522,000
2021	4,522,000
Thereafter	28,916,000
Total	$ 52,753,000	$ 25,900,000