CONSOLIDATED STATEMENTS OF EARNINGS - USD ($) $ in Thousands		12 Months Ended
		Mar. 31, 2016	Mar. 31, 2015		Mar. 31, 2014
Revenues:
Vessel revenues		$ 955,400	$ 1,468,358		$ 1,418,461
Other operating revenues		23,662	27,159		16,642
Total revenues		979,062	1,495,517		1,435,103
Costs and expenses:
Vessel operating costs		561,133	834,368		795,890
Costs of other operating revenues		18,811	26,505		15,745
General and administrative		153,811	189,819		187,976
Vessel operating leases		33,662	28,322		21,910
Depreciation and amortization		182,309	175,204		167,480
Gain on asset dispositions, net		(26,037)	(23,796)		(21,063)
Asset impairments		117,311	14,525		9,341
Goodwill impairment			283,699	[1]	56,283
Restructuring charge		7,586	4,052
Total costs and expenses		1,048,586	1,532,698		1,233,562
Operating income (loss)		(69,524)	(37,181)		201,541
Other income (expenses):
Foreign exchange gain (loss)		(5,403)	8,678		1,541
Equity in net earnings (losses) of unconsolidated companies		(13,581)	10,179		15,801
Interest income and other, net		2,703	1,927		2,123
Loss on early extinguishment of debt					(4,144)
Interest and other debt costs, net		(53,752)	(50,029)		(43,814)
Total other income (expenses)		(70,033)	(29,245)		(28,493)
Earnings (loss) before income taxes		(139,557)	(66,426)		173,048
Income tax (benefit) expense		20,819	(1,077)		32,793
Net earnings (loss)		(160,376)	(65,349)		140,255
Less: Net losses attributable to noncontrolling interests		(193)	(159)
Net earnings (loss) attributable to Tidewater Inc.		$ (160,183)	$ (65,190)		$ 140,255
Basic (loss) earnings per common share	[2]	$ (3.41)	$ (1.34)		$ 2.84
Diluted (loss) earnings per common share	[3]	$ (3.41)	$ (1.34)		$ 2.82
Weighted average common shares outstanding		46,981,102	48,658,840		49,392,749
Dilutive effect of stock options and restricted stock					287,365
Adjusted weighted average common shares		46,981,102	48,658,840		49,680,114

[1] The total carrying amount of goodwill at March 31, 2014 is net of accumulated impairment charges $30.9 million and $56.3 million related to the Middle East/North Africa and Asia/Pacific segments, respectively.

[2] The company calculates “Loss per share, basic” by dividing “Net loss available to common shareholders” by “Weighted average outstanding share of common stock, basic”.

[3] The company calculates “Loss per share, diluted” by dividing “Net loss available to common shareholders” by “Weighted average common stock and equivalents”.