Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues	$ 0	$ 0	$ 0	$ 0
Operating expenses
General and administrative expense	5,069	3,579	16,582	10,405
Invitation to bid contract costs	0	0	0	10,163
Land option and lease expense	423	754	1,281	1,750
Depreciation expense	65	80	146	164
Total operating expenses	5,557	4,413	18,009	22,482
Total operating loss	(5,557)	(4,413)	(18,009)	(22,482)
Other income (expense)
(Loss) gain on common stock warrant liabilities	(1,627)	873	6,147	(965)
Loss on redemption of investment securities	0	0	(412)	0
Interest income, net	7	319	241	1,193
Other	(1)	(7)	(17)	264
Total other (expense) income	(1,621)	1,185	5,959	492
Net loss attributable to NextDecade Corporation	(7,178)	(3,228)	(12,050)	(21,990)
Preferred stock dividends	(3,613)	(2,849)	(10,565)	(7,821)
Deemed dividends on Series A Convertible Preferred Stock	(16)	(286)	(113)	(1,324)
Net loss attributable to common stockholders	$ (10,807)	$ (6,363)	$ (22,728)	$ (31,135)
Net loss per common share - basic and diluted (in dollars per share)	$ (0.09)	$ (0.06)	$ (0.19)	$ (0.29)
Weighted average shares outstanding - basic and diluted (in shares)	117,564	107,181	117,450	107,062