Note 6 - Long-term Debt and Lease Obligation - Carrying Amount of the Company's Outstanding Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Lease Obligation	$ 12,755
Other loans	144	193
Debt discount and debt issuance costs, net of accumulated accretion	(10,572)	(7,564)
Debt, gross	114,831	108,266
Less current portion	170	48
Debt, non-current	114,661	108,218
Senior Secured Debt, Due September 28, 2019 [Member]
Senior secured debt	43,550	51,815
Convertible Note Instrument, Due March 5, 2018 [Member]
Convertible note instrument	2,154	4,018
Convertible Note Instrument, Due March 5, 2020 [Member]
Convertible note instrument	$ 66,800	$ 59,804

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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