Basis of Presentation - (Tables)

6 Months Ended

Jun. 30, 2019

Basis of Presentation [Abstract]

Schedule of cash flow, supplemental disclosures

The following table presents certain supplementary cash flows information for the six months ended June 30, 2019 and 2018:

	Six Months Ended June 30,
(In thousands)	2019		2018
Supplementary Cash Flows information:
Warrants exercised for common stock	$	—	$	2,409
Interest paid (net of interest capitalized)	4		754
Additions to equipment in process included in accounts payable	365		459
Right-of-use asset and lease liability recognized	560		—