Income Taxes	3 Months Ended
Mar. 31, 2014
Income Tax Disclosure [Abstract]
Income Taxes	On an interim basis, the Company estimates what its anticipated annual effective tax rate will be and records a quarterly income tax provision in accordance with the estimated annual rate, plus the tax effect of certain discrete items that arise during the quarter. As the fiscal year progresses, the Company refines its estimates based on actual events and financial results during the year. This process can result in significant changes to the Company's estimated effective tax rate. When this occurs, the income tax provision is adjusted during the quarter in which the estimates are refined so that the year-to-date provision reflects the estimated annual effective tax rate. These changes, along with adjustments to the Company's deferred taxes and related valuation allowance, may create fluctuations in the overall effective tax rate from quarter to quarter. The Company’s effective tax rate for the three months ended March 31, 2014 differed from the U.S. federal statutory rate primarily due to state income taxes and permanent non-deductible tax items. The total amount of unrecognized tax benefits, excluding associated interest and penalties, was $0.6 million as of March 31, 2014, of which $0.1 million would impact the effective tax rate if recognized. The total balance of accrued interest and penalties related to uncertain tax positions was $22,000 and $20,000 as of March 31, 2014 and December 31, 2013, respectively. The Company recognizes interest and penalties related to uncertain tax positions as a component of income tax expense and the accrued interest and penalties are included in deferred and other long-term liabilities in the Company’s condensed consolidated balance sheets. There were no material interest or penalties included in income tax expense for each of the three months ended March 31, 2014 and March 31, 2013. The Company is subject to taxation in the U.S. and in various state jurisdictions. Due to expired statutes of limitation, the Company’s federal income tax returns for years prior to calendar year 2010 are not subject to examination by the U.S. Internal Revenue Service. Generally, for the majority of state jurisdictions where the Company does business, periods prior to calendar year 2009 are no longer subject to examination. The Company is currently under examination by the State of Colorado for the years 2009 through 2012, but does not anticipate any material adjustments. The Company has estimated that $0.1 million of unrecognized tax benefits related to income tax positions may be affected by the resolution of tax examinations or expiring statutes of limitation within the next twelve months. Audit outcomes and the timing of settlements are subject to significant uncertainty.

Income Taxes

3 Months Ended

Mar. 31, 2014

On an interim basis, the Company estimates what its anticipated annual effective tax rate will be and records a quarterly income tax provision in accordance with the estimated annual rate, plus the tax effect of certain discrete items that arise during the quarter. As the fiscal year progresses, the Company refines its estimates based on actual events and financial results during the year. This process can result in significant changes to the Company's estimated effective tax rate. When this occurs, the income tax provision is adjusted during the quarter in which the estimates are refined so that the year-to-date provision reflects the estimated annual effective tax rate. These changes, along with adjustments to the Company's deferred taxes and related valuation allowance, may create fluctuations in the overall effective tax rate from quarter to quarter.

The Company’s effective tax rate for the three months ended March 31, 2014 differed from the U.S. federal statutory rate primarily due to state income taxes and permanent non-deductible tax items.

The total amount of unrecognized tax benefits, excluding associated interest and penalties, was $0.6 million as of March 31, 2014, of which $0.1 million would impact the effective tax rate if recognized.

The total balance of accrued interest and penalties related to uncertain tax positions was $22,000 and $20,000 as of March 31, 2014 and December 31, 2013, respectively. The Company recognizes interest and penalties related to uncertain tax positions as a component of income tax expense and the accrued interest and penalties are included in deferred and other long-term liabilities in the Company’s condensed consolidated balance sheets. There were no material interest or penalties included in income tax expense for each of the three months ended March 31, 2014 and March 31, 2013.

The Company is subject to taxation in the U.S. and in various state jurisdictions. Due to expired statutes of limitation, the Company’s federal income tax returns for years prior to calendar year 2010 are not subject to examination by the U.S. Internal Revenue Service. Generally, for the majority of state jurisdictions where the Company does business, periods prior to calendar year 2009 are no longer subject to examination. The Company is currently under examination by the State of Colorado for the years 2009 through 2012, but does not anticipate any material adjustments. The Company has estimated that $0.1 million of unrecognized tax benefits related to income tax positions may be affected by the resolution of tax examinations or expiring statutes of limitation within the next twelve months. Audit outcomes and the timing of settlements are subject to significant uncertainty.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

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