Senior Convertible Bonds (Tables)

12 Months Ended

Dec. 31, 2018

Senior Convertible Bonds [Abstract]

Schedule of senior convertible bonds

	December 31, 2018			December 31, 2017			December 31, 2016
	US$ thousands			US$ thousands			US$  thousands
10% Senior Convertible Bonds	$	3,470		$	3,470		$	3,470
Debt discount amortization, net	$	(993	)	$	(1,267	)	$	(1,513	)
Bonds converted to shares	$	(203	)	$	(111	)	$	(13	)
Offering cost, net	$	(63	)	$	(90	)	$	(118	)
10% senior Convertible bonds – Long Term Liability	$	2,211		$	2,002		$	1,826