Supplemental Cash Flow Information (Tables)

3 Months Ended

Mar. 31, 2021

Supplemental Cash Flow Information [Abstract]

Schedule of supplemental cash flow information

The following table provides supplemental cash flow information (dollars in thousands):

	Three Months Ended March 31,
	2021		2020
Cash paid for interest	$	—	$	3,313
Significant non-cash financing and investing activities:
Increase in debt from in-kind interest	3,671		16,420
Plant, equipment, and mine development additions included in accounts payable	911		364
Plant, equipment, and mine development acquired by note payable	407		—
Vesting of restricted stock units	115		—
Accrual of deferred financing and equity issuance costs	—		382