Consolidated Income Statements - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenues:
Revenue	$ 1,352,786	$ 1,345,835	$ 1,009,985
Costs and expenses:
Vessel operating costs	680,582	693,107	556,515
Costs of other operating revenues	6,420	3,555	4,342
General and Administrative Expense	134,531	110,817	95,283
Depreciation and amortization	262,339	242,770	180,331
Gain on asset dispositions, net	(13,682)	(15,762)	(8,701)
Total costs and expenses	1,070,190	1,034,487	827,770
Operating income	282,596	311,348	182,215
Other income (expense):
Foreign exchange gain (loss)	22,683	(15,276)	(1,370)
Equity in net earnings of unconsolidated companies	0	0	39
Interest income and other, net	8,169	6,383	6,517
Loss on early extinguishment of debt	(27,113)	0	0
Interest and other debt costs, net	(66,090)	(72,967)	(48,472)
Total other expense	(62,351)	(81,860)	(43,286)
Income before income taxes	220,245	229,488	138,929
Income tax expense (benefit)	(113,208)	50,216	43,308
Net income	333,453	179,272	95,621
Less: Net losses attributable to noncontrolling interests	(1,208)	(1,384)	(1,564)
Net income attributable to Tidewater Inc.	$ 334,661	$ 180,656	$ 97,185
Basic income per common share (in dollars per share)	$ 6.69	$ 3.44	$ 1.88
Diluted income per common share (in dollars per share)	$ 6.64	$ 3.4	$ 1.84
Weighted average common shares outstanding (in shares)	50,053	52,452	51,591
Dilutive effect of warrants, restricted stock units and stock options (in shares)	379	619	1,346
Adjusted weighted average common shares (in shares)	50,432	53,071	52,937
Vessel [Member]
Revenues:
Revenue	$ 1,338,931	$ 1,337,637	$ 998,993
Product and Service, Other [Member]
Revenues:
Revenue	$ 13,855	$ 8,198	$ 10,992