Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating activities:
Net loss attributable to NextDecade Corporation	$ (221,640)	$ (60,071)
Adjustment to reconcile net loss to net cash used in operating activities
Depreciation	168	162
Share-based compensation expense	26,553	7,472
Loss on common stock warrant liabilities	1,879	5,747
Derivative loss, net	44,803	0
Net cash provided by settlement of derivative instruments	4,138	0
Amortization of right-of-use assets	2,980	756
Gain on sale of assets	(5,712)	0
Amortization of debt issuance costs	41,390	0
Loss on debt extinguishment	9,531	0
Interest expense	26,432	0
Amortization of other non-current assets	0	354
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(940)	(314)
Accounts payable	4,057	684
Operating lease liabilities	(179)	(678)
Accrued expenses and other liabilities	(7,080)	5,812
Net cash used in operating activities	(73,620)	(40,076)
Investing activities:
Acquisition of property, plant and equipment	(1,737,636)	(33,753)
Acquisition of other non-current assets	(15,164)	(7,135)
Net cash used in investing activities	(1,752,800)	(40,888)
Financing activities:
Proceeds from debt issuance	2,083,000	0
Proceeds from sale of equity in subsidiaries	457,659	0
Proceeds from sale of preferred stock	0	10,500
Proceeds from sale of common stock	254,400	115,000
Repayment of debt	(233,000)	0
Debt and equity issuance costs	(494,270)	(3,952)
Preferred stock dividends	(53)	(75)
Shares repurchased related to share-based compensation	(9,627)	(3,272)
Net cash provided by financing activities	2,058,109	118,201
Net increase in cash, cash equivalents and restricted cash	231,689	37,237
Cash, cash equivalents and restricted cash – beginning of period	62,789	25,552
Cash, cash equivalents and restricted cash – end of period	294,478	62,789
Balance per Consolidated Balance Sheet:
Cash and cash equivalents	38,241	62,789
Restricted cash	256,237
Total cash, cash equivalents and restricted cash	$ 294,478	$ 62,789