Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenues	$ 0	$ 0
Operating Expenses
General and administrative expenses	16,803	20,213
Development expense	1,615	0
Land option and lease expenses	905	1,603
Depreciation expense	184	196
Total operating expenses	19,507	22,012
Total operating loss	(19,507)	(22,012)
Other income (expense)
(Loss) gain on Common Stock Warrant liabilities	(2,533)	7,870
Loss on redemption of investment securities	0	(412)
Interest income, net	2	243
Other	(1)	(18)
Total other (expense) income	(2,532)	7,683
Net loss attributable to NextDecade Corporation	(22,039)	(14,329)
Preferred stock dividends	(18,294)	(14,327)
Deemed dividends on Series A Convertible Preferred Stock	(63)	(128)
Net loss attributable to common stockholders	$ (40,396)	$ (28,784)
Net loss per common share - basic and diluted (in dollars per share)	$ (0.34)	$ (0.24)
Weighted average shares outstanding - basic and diluted (in shares)	119,201	117,524