Loans payable (Tables)

12 Months Ended

Dec. 31, 2019

Loans payable

Schedule of loans payable

	Year ended December 31,
	2019		2018
Loans from FFG	$	7,305	$	8,316
Unamortized debt discount		(2,586)		(3,924)
Total Loans payable, net	$	4,719	$	4,392

Schedule of aggregate minimum future principal payments due in connection with the FFG Loans

As of December 31, 2019, the aggregate minimum future principal payments due in connection with the FFG Loans are summarized as follows (in thousands):

Year ending December 31,	Amount
2020		1,280
2021		—
2022		3,029
2023		1,806
2024		1,190
Thereafter		—
Total	$	7,305