
	Six Months Ended June 30,
	2020		2019
	(in thousands)
Cash flows from operating activities:
Net loss	$	(5,659)	$	(4,809)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization		544		544
Accretion of asset retirement obligation		121		111
Decrease in derivative at fair value		125		—
Loss (gain) on trading securities		—		158
Asset write off		100		19
Gain on sale of assets		—		(104)
Stock compensation		666		653
Changes in operating assets and liabilities from continuing operations:
Decrease (increase) in lease receivable		95		(29)
(Increase) decrease in prepaid expenses and other assets		(516)		144
(Increase) decrease in inventories		45		(2)
Increase in value added tax recoverable, net		—		(3)
Decrease (increase) in other long term assets		598		(465)
Decrease in reclamation liability		(2)		(63)
(Decrease) increase in accounts payable and accrued liabilities		(950)		130
(Decrease) increase in other current liabilities		(953)		1,689
Decrease in deferred revenue		(245)		(146)
(Decrease) increase in other long term liabilities		(82)		388
Net cash used in operating activities	$	(6,113)	$	(1,785)

The following table sets forth supplemental cash flow information and non-cash transactions:


	Six Months Ended June 30,
	2020		2019
	(in thousands)
Supplemental disclosure:
Interest paid	$	64	$	—
Income taxes paid	$	284	$	—

Supplemental disclosure of non-cash transactions:
Deferred equity offering costs amortized	$	32	$	58