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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands | 4 Months Ended | 5 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jul. 31, 2017 | Dec. 31, 2017 | Dec. 31, 2018 | Mar. 31, 2017
Revenues: |  |  |  |  |
Total revenues |  |  | $ 178,753 | $ 406,520 |
Costs and expenses: |  |  |  |  |
Vessel operating costs |  |  | 120,502 | 269,580 |
Costs of other operating revenues |  |  | 3,792 | 5,530 |
General and administrative |  |  | 46,619 | 110,023 |
Vessel operating leases |  |  | 1,215 |  |
Depreciation and amortization |  |  | 20,337 | 58,293 |
Gain on asset dispositions, net |  |  | (6,616) | (10,624) |
Impairment of due from affiliate |  |  |  | 20,083 |
Long-lived asset impairments | [1] |  | 16,777 | 61,132 |
Total costs and expenses |  |  | 202,626 | 514,017 |
Operating loss |  |  | (23,873) | (107,497) |
Other income (expense): |  |  |  |  |
Foreign exchange gain (loss) |  |  | (407) | 106 |
Equity in net earnings (losses) of unconsolidated companies |  |  | 2,130 | (18,864) |
Interest income and other, net |  |  | 2,771 | 11,294 |
Reorganization items |  |  | (4,299) |  |
Loss on early extinguishment of debt |  |  |  | (8,119) |
Interest and other debt costs, net |  |  | (13,009) | (30,439) |
Total other income (expenses) |  |  | (12,814) | (46,022) |
Loss before income taxes |  |  | (36,687) | (153,519) |
Income tax (benefit) expense |  |  | 2,039 | 18,252 |
Net loss |  |  | (38,726) | (171,771) |
Less: Net income (losses) attributable to noncontrolling interests |  |  | 540 | (254) |
Net loss attributable to Tidewater Inc. |  |  | $ (39,266) | $ (171,517) |
Basic loss per common share | [2] |  | $ (1.82) | $ (6.45) |
Diluted loss per common share | [3] |  | $ (1.82) | $ (6.45) |
Weighted average common shares outstanding | [4] |  | 21,539,143 | 26,589,883 |
Adjusted weighted average common shares |  |  | 21,539,143 | 26,589,883 |
Vessel Revenues |  |  |  |  |
Revenues: |  |  |  |  |
Total revenues |  |  | $ 171,884 | $ 397,206 |
Other Operating Revenues |  |  |  |  |
Revenues: |  |  |  |  |
Total revenues |  |  | $ 6,869 | $ 9,314 |
Predecessor |  |  |  |  |
Revenues: |  |  |  |  |
Total revenues |  | $ 151,369 |  |  | $ 601,611
Costs and expenses: |  |  |  |  |
Vessel operating costs |  | 116,438 |  |  | 359,171
Costs of other operating revenues |  | 2,348 |  |  | 12,729
General and administrative |  | 41,832 |  |  | 145,879
Vessel operating leases |  | 6,165 |  |  | 33,766
Depreciation and amortization |  | 47,447 |  |  | 167,291
Gain on asset dispositions, net |  | (3,561) |  |  | (24,099)
Long-lived asset impairments | [1] | 184,748 |  |  | 484,727
Total costs and expenses |  | 395,417 |  |  | 1,179,464
Operating loss |  | (244,048) |  |  | (577,853)
Other income (expense): |  |  |  |  |
Foreign exchange gain (loss) |  | (3,181) |  |  | (1,638)
Equity in net earnings (losses) of unconsolidated companies |  | 4,786 |  |  | 5,710
Interest income and other, net |  | 2,384 |  |  | 5,193
Reorganization items |  | (1,396,905) |  |  |
Interest and other debt costs, net |  | (11,179) |  |  | (75,026)
Total other income (expenses) |  | (1,404,095) |  |  | (65,761)
Loss before income taxes |  | (1,648,143) |  |  | (643,614)
Income tax (benefit) expense |  | (1,234) |  |  | 6,397
Net loss |  | (1,646,909) |  |  | (650,011)
Less: Net income (losses) attributable to noncontrolling interests |  |  |  |  | 10,107
Net loss attributable to Tidewater Inc. |  | $ (1,646,909) |  |  | $ (660,118)
Basic loss per common share | [2] | $ (34.95) |  |  | $ (14.02)
Diluted loss per common share | [3] | $ (34.95) |  |  | $ (14.02)
Weighted average common shares outstanding | [4] | 47,121,330 |  |  | 47,071,066
Adjusted weighted average common shares |  | 47,121,330 |  |  | 47,071,066
Predecessor | Vessel Revenues |  |  |  |  |
Revenues: |  |  |  |  |
Total revenues |  | $ 146,597 |  |  | $ 583,816
Predecessor | Other Operating Revenues |  |  |  |  |
Revenues: |  |  |  |  |
Total revenues |  | $ 4,772 |  |  | $ 17,795
[1] | The twelve months ended December 31, 2018, the period August 1, 2017 through December 31, 2017 and the twelve months ended March 31, 2017 included $3.5 million, $2.3 million and $2.2 million respectively, of impairments related to inventory and other non-vessel assets. There were no impairments to non-vessel assets during the period April 1, 2017 through July 31, 2017.
[2] | We calculate “Loss per share, basic” by dividing “Net loss available to common shareholders” by “Weighted average outstanding share of common stock, basic”.
[3] | We calculate “Loss per share, diluted” by dividing “Net loss available to common shareholders” by “Weighted average common stock and equivalents”.
[4] | Basic weighted average shares outstanding included 2,547 and 924,125 shares issuable upon the exercise of New Creditor Warrants held by U.S. citizens at December 31, 2018 (Successor) and December 31, 2017 (Successor).

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