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v2.4.1.9

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Deferred tax assets: |  |
Net operating losses | $ 347 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | $ 483 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Warranty reserve | 13,032 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves | 16,085 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves
Stock-based compensation | 2,931 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost | 2,383 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Accruals not currently deductible and other | 5,221 us-gaap_DeferredTaxAssetsOther | 6,210 us-gaap_DeferredTaxAssetsOther
Inventories | 4,437 us-gaap_DeferredTaxAssetsInventory | 3,843 us-gaap_DeferredTaxAssetsInventory
State tax credit carryforwards | 4,050 us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsOther | 3,714 us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsOther
Gross deferred tax assets, before valuation allowance | 30,018 us-gaap_DeferredTaxAssetsGross | 32,718 us-gaap_DeferredTaxAssetsGross
Valuation allowance | (4,465)us-gaap_DeferredTaxAssetsValuationAllowance | (4,201)us-gaap_DeferredTaxAssetsValuationAllowance
Gross deferred tax assets, after valuation allowance | 25,553 us-gaap_DeferredTaxAssetsNet | 28,517 us-gaap_DeferredTaxAssetsNet
Deferred tax liabilities: |  |
Depreciation and other | (19,990)trex_DeferredTaxLiabilitiesDepreciationAndOther | (19,380)trex_DeferredTaxLiabilitiesDepreciationAndOther
Gross deferred tax liabilities | (19,990)us-gaap_DeferredIncomeTaxLiabilities | (19,380)us-gaap_DeferredIncomeTaxLiabilities
Net deferred tax asset | $ 5,563 us-gaap_DeferredTaxAssetsLiabilitiesNet | $ 9,137 us-gaap_DeferredTaxAssetsLiabilitiesNet

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- Definition Amount of deferred tax liability attributable to taxable temporary differences. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Deferred Tax Liability -URI http://asc.fasb.org/extlink&oid=6510232 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph b(2) -Article 7 + Details
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