Income Taxes	6 Months Ended
Jun. 30, 2011
Notes to Condensed Consolidated Financial Statements [Abstract]
Income Taxes	Income Taxes The Company determines its deferred tax assets and liabilities based upon the difference between the financial statement and tax bases of its assets and liabilities, calculated using enacted applicable tax rates. The Company then assesses the likelihood that its deferred tax assets will be recovered from future taxable income and, to the extent it believes that recovery is not likely, a valuation allowance is established. Changes in the valuation allowance, when recorded, are included in the provision for (benefit from) income taxes in the condensed consolidated financial statements. The Company’s unrecognized tax benefits of $4,755 and $3,843 at June 30, 2011 and December 31, 2010, respectively, are uncertain tax positions that would impact the Company’s effective tax rate if recognized. The Company is periodically engaged in tax return examinations, reviews of statute of limitations periods, and settlements surrounding income taxes. The Company does not anticipate a material change in its unrecognized tax benefits during the next twelve months. The Company classifies interest expense and penalties as part of its provision for income taxes based upon applicable federal and state interest/underpayment percentages. The Company has accrued $1,195 and $1,107 in interest and penalties on its condensed consolidated balance sheets at June 30, 2011 and December 31, 2010, respectively. Interest was computed on the difference between the provision for income taxes recognized in accordance with US GAAP and the amount of benefit previously taken or expected to be taken in the Company’s federal, state, and local income tax returns. The Company’s federal income tax returns for the tax years 2007 and forward are available for examination by the US Internal Revenue Service (“IRS”). The Company has not agreed to extend the federal statute of limitations for the 2007 tax year as of June 30, 2011. The federal statute of limitations for the 2007 tax year will expire on September 15, 2011. The Company's 2009 federal income tax return is currently under audit examination by the IRS. This examination commenced during June 2011 and is expected to be completed during 2012. Since the audit process has only recently begun, the audit outcome cannot yet be evaluated. The Company’s state income tax returns for 2006 through 2010 remain subject to examination by various state authorities with the latest period closing on December 31, 2015. The Company has not extended the statutes of limitations for any state jurisdictions with respect to years prior to 2006. Such statutes of limitations will expire on or before November 15, 2011 unless extended.

Income Taxes

6 Months Ended

Jun. 30, 2011

Notes to Condensed Consolidated Financial Statements [Abstract]

The Company determines its deferred tax assets and liabilities based upon the difference between the financial statement and tax bases of its assets and liabilities, calculated using enacted applicable tax rates. The Company then assesses the likelihood that its deferred tax assets will be recovered from future taxable income and, to the extent it believes that recovery is not likely, a valuation allowance is established. Changes in the valuation allowance, when recorded, are included in the provision for (benefit from) income taxes in the condensed consolidated financial statements.

The Company’s unrecognized tax benefits of $4,755 and $3,843 at June 30, 2011 and December 31, 2010, respectively, are uncertain tax positions that would impact the Company’s effective tax rate if recognized. The Company is periodically engaged in tax return examinations, reviews of statute of limitations periods, and settlements surrounding income taxes. The Company does not anticipate a material change in its unrecognized tax benefits during the next twelve months.

The Company classifies interest expense and penalties as part of its provision for income taxes based upon applicable federal and state interest/underpayment percentages. The Company has accrued $1,195 and $1,107 in interest and penalties on its condensed consolidated balance sheets at June 30, 2011 and December 31, 2010, respectively. Interest was computed on the difference between the provision for income taxes recognized in accordance with US GAAP and the amount of benefit previously taken or expected to be taken in the Company’s federal, state, and local income tax returns.

The Company’s federal income tax returns for the tax years 2007 and forward are available for examination by the US Internal Revenue Service (“IRS”). The Company has not agreed to extend the federal statute of limitations for the 2007 tax year as of June 30, 2011. The federal statute of limitations for the 2007 tax year will expire on September 15, 2011. The Company's 2009 federal income tax return is currently under audit examination by the IRS. This examination commenced during June 2011 and is expected to be completed during 2012. Since the audit process has only recently begun, the audit outcome cannot yet be evaluated. The Company’s state income tax returns for 2006 through 2010 remain subject to examination by various state authorities with the latest period closing on December 31, 2015. The Company has not extended the statutes of limitations for any state jurisdictions with respect to years prior to 2006. Such statutes of limitations will expire on or before November 15, 2011 unless extended.