Note 11 - Share Based Compensation - Recognition of Unvested Share-based Awards Expenses (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Unrecognized expenses unvested share based awards	$ 600
Fiscal Year 2017 [Member]
Unrecognized expenses unvested share based awards	578
Time-based Restricted Stock Units [Member] | Fiscal Year 2017 [Member]
Unrecognized expenses unvested share based awards	578
Performance-based Restricted Stock Units [Member] | Fiscal Year 2017 [Member]
Unrecognized expenses unvested share based awards