Income Taxes

3 Months Ended

Mar. 31, 2013

Income Taxes

Income Taxes

9.     Income Taxes

The income tax provision differs from the expected tax provisions computed by applying the U.S. Federal statutory rate to loss before income taxes primarily because the Company has historically maintained a full valuation allowance on its deferred tax assets and to a lesser extent because of the impact of state income taxes.  As described in the 2012 Form 10-K, the Company maintains a full valuation allowance in accordance with ASC 740, Accounting for Income Taxes, on its net deferred tax assets.  Until the Company achieves and sustains an appropriate level of profitability, it plans to maintain a valuation allowance on its net deferred tax assets.