Note 6 - Debt - Summary of Debt (Details) (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Capital Lease Obligations [Member]
Debt instrument, unamortized discount	$ 52	$ 210
Related Party July 2018 Note Payable To Great Harbor LLC [Member]
Debt instrument, unamortized discount	1,303
Related Party Debt November 2014 Note Payable to Golisano Holdings LLC (Formerly Penta Mezzanine SBIC Fund I, L.P.) [Member]
Debt instrument, unamortized discount	881	1,491
Related-Party Debt January 2015 Note Payable to Golisano Holdings LLC (Formerly Payable to JL-BBNC Mezz Utah, LLC) [Member]
Debt instrument, unamortized discount	1,143	1,829
February 2015 Note Payable to Golisano Holdings LLC (Formerly Payable to Penta Mezzanine SBIC Fund I, L.P.) [Member]
Debt instrument, unamortized discount	$ 78	$ 130