Income Taxes	9 Months Ended
Sep. 25, 2014
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The provision for income taxes of $2.8 million and $2.4 million for the quarters ended September 25, 2014 and September 26, 2013, respectively, reflects effective tax rates of approximately 38.9% and 38.7%, respectively. The provision for income taxes of $5.3 million and $4.6 million for the three quarters ended September 25, 2014 and September 26, 2013, respectively, reflects effective tax rates of approximately 39.6% and 39.3%, respectively. The effective tax rates for the quarters and three quarters ended ended September 25, 2014 and September 26, 2013 reflect the impact of certain non-deductible expenses. In assessing the realizable value of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which these temporary differences become deductible. The Company has recorded a valuation allowance against deferred tax assets of $2.4 million as of September 25, 2014 and December 26, 2013 as management believes it is more likely than not that certain deferred tax assets will not be realized in future tax periods. Future reductions in the valuation allowance associated with a change in management’s determination of the Company’s ability to realize these deferred tax assets will result in a decrease in the provision for income taxes. The Company files income tax returns in the U.S. federal jurisdiction and certain state jurisdictions as part of the REG income tax filings and files separate income tax returns in various other state jurisdictions as well. The Company's share of the REG current and deferred tax expense is determined on a separate company basis. REG and the Company are no longer subject to U.S. federal income tax examinations by taxing authorities for years before 2010, and with limited exceptions, are no longer subject to state income tax examinations for years before 2010. However, the taxing authorities still have the ability to review the propriety of tax attributes created in closed tax years if such tax attributes are utilized in an open tax year. In May 2014, REG was notified that the Internal Revenue Service ("IRS") would examine its 2012 federal income tax return. As of the quarter ended September 25, 2014, REG has not been notified of any items that are being disputed by the IRS. Management believes that it has provided adequate provision for income taxes relative to the tax year under examination.

Income Taxes

The provision for income taxes of $2.8 million and $2.4 million for the quarters ended September 25, 2014 and September 26, 2013, respectively, reflects effective tax rates of approximately 38.9% and 38.7%, respectively. The provision for income taxes of $5.3 million and $4.6 million for the three quarters ended September 25, 2014 and September 26, 2013, respectively, reflects effective tax rates of approximately 39.6% and 39.3%, respectively. The effective tax rates for the quarters and three quarters ended ended September 25, 2014 and September 26, 2013 reflect the impact of certain non-deductible expenses.

In assessing the realizable value of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which these temporary differences become deductible. The Company has recorded a valuation allowance against deferred tax assets of $2.4 million as of September 25, 2014 and December 26, 2013 as management believes it is more likely than not that certain deferred tax assets will not be realized in future tax periods. Future reductions in the valuation allowance associated with a change in management’s determination of the Company’s ability to realize these deferred tax assets will result in a decrease in the provision for income taxes.

The Company files income tax returns in the U.S. federal jurisdiction and certain state jurisdictions as part of the REG income tax filings and files separate income tax returns in various other state jurisdictions as well. The Company's share of the REG current and deferred tax expense is determined on a separate company basis. REG and the Company are no longer subject to U.S. federal income tax examinations by taxing authorities for years before 2010, and with limited exceptions, are no longer subject to state income tax examinations for years before 2010. However, the taxing authorities still have the ability to review the propriety of tax attributes created in closed tax years if such tax attributes are utilized in an open tax year. In May 2014, REG was notified that the Internal Revenue Service ("IRS") would examine its 2012 federal income tax return. As of the quarter ended September 25, 2014, REG has not been notified of any items that are being disputed by the IRS. Management believes that it has provided adequate provision for income taxes relative to the tax year under examination.