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Condensed Consolidated Statements of Equity (USD $) In Thousands | Total | Common stock | Additional paid-in capital | Retained earnings | Accumulated other comprehensive loss | Non controlling interest
--- | --- | --- | --- | --- | --- | ---
Balance at Mar. 31, 2013 | $ 2,561,756 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | $ 4,949 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 119,975 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ 2,453,973 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | $ (17,141)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Total comprehensive income (loss) | 97,530 us-gaap_ComprehensiveIncomeNetOfTax |  |  | 96,838 us-gaap_ComprehensiveIncomeNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 692 us-gaap_ComprehensiveIncomeNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Exercise of stock options | 6,529 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercisedNetOfTaxBenefitExpense | 17 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercisedNetOfTaxBenefitExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 6,512 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercisedNetOfTaxBenefitExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Cash dividends declared ($.75 per share) | (37,431)us-gaap_DividendsCommonStockCash |  |  | (37,431)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |
Amortization of restricted stock units | 8,677 us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition |  | 8,677 us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Amortization/cancellation of restricted stock | 2,927 tdw_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitOrRestrictedStockAwardRequisiteServicePeriodRecognitionNetOfForfeitures | (4)tdw_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitOrRestrictedStockAwardRequisiteServicePeriodRecognitionNetOfForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 2,931 tdw_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitOrRestrictedStockAwardRequisiteServicePeriodRecognitionNetOfForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Balance at Dec. 31, 2013 | 2,639,988 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 4,962 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 138,095 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 2,513,380 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (16,449)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Balance at Mar. 31, 2014 | 2,685,371 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 4,973 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 142,381 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 2,544,255 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (12,225)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 5,987 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Total comprehensive income (loss) | (55,898)us-gaap_ComprehensiveIncomeNetOfTax |  |  | (56,114)us-gaap_ComprehensiveIncomeNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 559 us-gaap_ComprehensiveIncomeNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | (343)us-gaap_ComprehensiveIncomeNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Exercise of stock options | 1,025 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercisedNetOfTaxBenefitExpense | 3 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercisedNetOfTaxBenefitExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 1,022 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercisedNetOfTaxBenefitExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Cash dividends declared ($.75 per share) | (37,229)us-gaap_DividendsCommonStockCash |  |  | (37,229)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |
Retirement of common stock | (99,999)us-gaap_StockRepurchasedAndRetiredDuringPeriodValue | (284)us-gaap_StockRepurchasedAndRetiredDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  | (99,715)us-gaap_StockRepurchasedAndRetiredDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |
Amortization of restricted stock units | 12,496 us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition | 1 us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 12,495 us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Amortization/cancellation of restricted stock | 2,599 tdw_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitOrRestrictedStockAwardRequisiteServicePeriodRecognitionNetOfForfeitures | (4)tdw_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitOrRestrictedStockAwardRequisiteServicePeriodRecognitionNetOfForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 2,603 tdw_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitOrRestrictedStockAwardRequisiteServicePeriodRecognitionNetOfForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Cash received from noncontrolling interests | 450 us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance |  |  |  |  | 450 us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Cash paid to noncontrolling interests | (50)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders |  |  |  |  | (50)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Balance at Dec. 31, 2014 | $ 2,508,765 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | $ 4,689 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 158,501 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ 2,351,197 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | $ (11,666)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ 6,044 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember

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