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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

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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