Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues	$ 0	$ 0	$ 0	$ 0
Operating expenses
General and administrative expense (recovery)	4,700	(5,076)	11,515	6,960
Invitation to bid contract costs	0	10,163	0	10,163
Land option and lease expense	447	451	858	862
Depreciation expense	64	43	80	85
Total operating expenses	5,211	5,581	12,453	18,070
Total operating loss	(5,211)	(5,581)	(12,453)	(18,070)
Other income (expense)
(Loss) gain on common stock warrant liabilities	(565)	(1,641)	7,774	(1,838)
Loss on redemption of investment securities	0	0	(412)	0
Interest income, net	2	409	235	875
Other	0	94	(16)	271
Total other (expense) income	(563)	(1,138)	7,581	(692)
Net loss attributable to NextDecade Corporation	(5,774)	(6,719)	(4,872)	(18,762)
Preferred stock dividends	(3,509)	0	(6,952)	(4,972)
Deemed dividends on Series A Convertible Preferred Stock	(21)	(488)	(97)	(1,039)
Net loss attributable to common stockholders	$ (9,304)	$ (7,207)	$ (11,921)	$ (24,773)
Net loss per common share - basic and diluted (in dollars per share)	$ (0.08)	$ (0.07)	$ (0.10)	$ (0.23)
Weighted average shares outstanding - basic and diluted (in shares)	117,388	107,061	117,370	107,001