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Income Taxes - Effective Tax Rate Differs from Federal Statutory Rate (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Tax Disclosure [Abstract]      
Taxes at the U.S. federal statutory rate $ 44,788us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate $ (83,109)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate $ 34,870us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
State income taxes, net of federal tax impact 3,822us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes (859)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes 3,964us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Tax loss on the sale of WRI (5,786)us-gaap_IncomeTaxReconciliationMinorityInterestIncomeExpense    
Non deductible transaction costs 2,594tph_IncomeTaxReconciliationNonDeductibleExpenseTransactionCosts    
Other, net (1,651)us-gaap_IncomeTaxReconciliationOtherReconcilingItems (2,193)us-gaap_IncomeTaxReconciliationOtherReconcilingItems 76us-gaap_IncomeTaxReconciliationOtherReconcilingItems
Total income tax expense (benefit) $ 43,767us-gaap_IncomeTaxExpenseBenefit $ (86,161)us-gaap_IncomeTaxExpenseBenefit $ 38,910us-gaap_IncomeTaxExpenseBenefit
Effective income tax rate 34.20%us-gaap_EffectiveIncomeTaxRateContinuingOperations 36.30%us-gaap_EffectiveIncomeTaxRateContinuingOperations 39.10%us-gaap_EffectiveIncomeTaxRateContinuingOperations