Warrants

12 Months Ended

Dec. 31, 2018

Derivative Financial Instruments Indexed to, and Potentially Settled in, Entity's Own Stock [Abstract]

Warrants

12. Warrants

A summary of warrants outstanding and exercisable as of December 31, 2018 (in thousands, except as noted):

	Warrants Outstanding						Warrants Exercisable
			Weighted
			Average		Weighted				Weighted
			Remaining		Average				Average
	Number		Contractual		Exercise		Number		Exercise
Year Issued	Outstanding		Life		Price		Exercisable		Price
			(in years)		(per share)				(per share)
2014		1		0.1	$	948.00		1	$	948.00
2016		6		3.0		466.26		6		466.26
2017 (Note 10)		56		3.7		55.63		56		55.63
2018 (Note 10)		120		5.2		19.20		-		-
		183		4.6	$	52.24		63	$	114.28