Note 17 - Commitments and Contingencies - Commitments (Details) $ in Thousands	Mar. 31, 2017 USD ($)
Operating Leases, Future Minimum Payments, Current	$ 1,350
Purchase Obligation, Due in Next Twelve Months	23,700
Operating Leases, Future Minimum Payments, Due in Two Years	1,209
Purchase Obligation, Due in Second Year	2,776
Operating Leases, Future Minimum Payments, Due in Three Years	1,087
Purchase Obligation, Due in Third Year	0
Operating Leases, Future Minimum Payments, Due in Four Years	667
Purchase Obligation, Due in Fourth Year	0
Operating Leases, Future Minimum Payments, Due in Five Years	473
Purchase Obligation, Due in Fifth Year	0
Operating Leases, Total Minimum Payments	4,786
Purchase Obligation, Total Minimum Payments	$ 26,476