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QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Quarterly Financial Information | Selected financial information for interim periods, is as follows:
|  | Successor |  |  | Predecessor |
(In thousands except per share data) |  | Quarter Ended December 31, 2017 |  |  | Period from August 1, 2017 through September 30, 2017 |  |  | Period from July 1, 2017 through July 31, 2017 |  |  | Quarter Ended June 30, 2017 |
Nine Month Transition Period Ended December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ | 104,453 |  |  |  | 74,300 |  |  |  | 36,263 |  |  |  | 115,106 |
Operating income (loss)(B) |  |  | (18,091 | ) |  |  | (5,782 | ) |  |  | (38,674 | ) |  |  | (205,374 | )
Net loss attributable to Tidewater Inc. |  |  | (23,573 | ) |  |  | (15,693 | ) |  |  | (1,122,475 | ) |  |  | (524,434 | )
Basic loss per share attributable to Tidewater Inc. |  | $ | (1.02 | ) |  |  | (.81 | ) |  |  | (23.82 | ) |  |  | (11.13 | )
Diluted loss per share attributable to Tidewater Inc. |  | $ | (1.02 | ) |  |  | (.81 | ) |  |  | (23.82 | ) |  |  | (11.13 | )
|  | Predecessor |
(In thousands except per share data) |  | Quarter Ended June 30, 2016 |  |  | Quarter Ended September 30, 2016 |  |  | Quarter Ended December 31, 2016 |  |  | Quarter Ended March 31, 2017 |
Year Ended March 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues(A) |  | $ | 167,925 |  |  |  | 143,722 |  |  |  | 129,215 |  |  |  | 160,749 |
Operating income (loss)(B) |  |  | (66,135 | ) |  |  | (155,344 | ) |  |  | (287,034 | ) |  |  | (69,340 | )
Net loss attributable to Tidewater Inc. |  |  | (89,097 | ) |  |  | (178,490 | ) |  |  | (297,676 | ) |  |  | (94,855 | )
Basic loss per share attributable to Tidewater Inc. |  | $ | (1.89 | ) |  |  | (3.79 | ) |  |  | (6.32 | ) |  |  | (2.01 | )
Diluted loss per share attributable to Tidewater Inc. |  | $ | (1.89 | ) |  |  | (3.79 | ) |  |  | (6.32 | ) |  |  | (2.01 | )
(A) | Included in revenues for the quarter ended March 31, 2017 is $39.1 million of revenue related to early cancellation of a long-term vessel charter contract.
(B) | Operating income consists of revenues less operating costs and expenses, depreciation, vessel operating leases, goodwill impairment, restructuring charges, asset impairments, general and administrative expenses and gain on asset dispositions, net, of the company’s operations. Asset impairments, net, are as follows:
|  | Successor |  |  | Predecessor |
(In thousands) |  | Quarter Ended December 31, 2017 |  |  | Period from August 1, 2017 through September 30, 2017 |  |  | Period from July 1, 2017 through July 31, 2017 |  |  | Quarter Ended June 30, 2017 |
Nine Month Transition Period Ended December 31, 2017: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset impairments |  | $ | 16,777 |  |  |  | — |  |  |  | 21,325 |  |  |  | 163,423 |
|  | Predecessor |
(In thousands except per share data) |  | Quarter Ended June 30, 2016 |  |  | Quarter Ended September 30, 2016 |  |  | Quarter Ended December 31, 2016 |  |  | Quarter Ended March 31, 2017 |
Year Ended March 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset impairments |  | $ | 36,886 |  |  |  | 129,562 |  |  |  | 253,422 |  |  |  | 64,857 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109225645&loc=d3e1280-108306 + Details
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