XML 1021 R152.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Selected Financial Information (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2013
Quarterly Financial Data [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment |  | $ (283,699)us-gaap_GoodwillImpairmentLoss |  |  |  | $ (56,283)us-gaap_GoodwillImpairmentLoss |  |  | $ (283,699)us-gaap_GoodwillImpairmentLoss | [1] | $ (56,283)us-gaap_GoodwillImpairmentLoss |
Gain on asset dispositions, net | $ 4,275 us-gaap_GainLossOnDispositionOfAssets | $ (1,537)us-gaap_GainLossOnDispositionOfAssets | $ 3,590 us-gaap_GainLossOnDispositionOfAssets | $ 2,943 us-gaap_GainLossOnDispositionOfAssets | $ 2,363 us-gaap_GainLossOnDispositionOfAssets | $ 7,170 us-gaap_GainLossOnDispositionOfAssets | $ 49 us-gaap_GainLossOnDispositionOfAssets | $ 2,140 us-gaap_GainLossOnDispositionOfAssets | $ 9,271 us-gaap_GainLossOnDispositionOfAssets |  | $ 11,722 us-gaap_GainLossOnDispositionOfAssets | $ 6,609 us-gaap_GainLossOnDispositionOfAssets
[1] | The total carrying amount of goodwill at December 31, 2014 is net of accumulated impairment charges of $370.9 million.

X
- Details
Name: | tdw_QuarterlyFinancialDataLineItems
Namespace Prefix: | tdw_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2941-110230 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 + Details
Name: | us-gaap_GainLossOnDispositionOfAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillImpairmentLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration