Note 17 - Notes Payable - Summary of Notes Payable (Details) - USD ($) $ in Thousands		Jun. 30, 2019	Dec. 31, 2018
Acquisition Note Payable - related party			$ 5,304
Convertible Debt [Member]
Acquisition Note Payable - related party	[1]	$ 5,304	$ 5,304

[1] The note payable to International Electronic Devices, Inc. (formerly CUI, Inc.) is associated with the acquisition of CUI, Inc. The promissory note is due May 15, 2020 and includes a 5% interest rate per annum, with interest payable monthly and the principal due as a balloon payment at maturity. The note contains a contingent conversion feature, such that in the event of default on the note the holder of the note can, at the holder's option, convert the note principal into common stock at $0.001 per share. As of June 30, 2019, the Company is in compliance with all terms of this promissory note and the conversion feature is not effective. At June 30, the note is classified in current liabilities since its maturity date is in less than one year.