Income taxes	3 Months Ended
Mar. 31, 2013
Income Tax Disclosure [Abstract]
Income taxes	Income taxes We recorded income tax expense from continuing operations for the three months ended March 31, 2013 of $2,517 which primarily consist of foreign and state income taxes. Our domestic deferred tax assets, net of deferred tax liabilities are subject to a valuation allowance; therefore, the domestic losses were not benefited. We recorded income tax expense from continuing operations for the three months ended March 31, 2012 of $2,821 which primarily consist of foreign and state income taxes. Income tax expense is based on an annual effective tax rate forecast, including estimates and assumptions that could change during the year. As of March 31, 2013, all of Century's U.S. and certain foreign deferred tax assets, net of deferred tax liabilities continue to be subject to a valuation allowance. The realization of these assets is dependent on substantial future taxable income which at March 31, 2013, is not likely to be achieved. During the three months ended March 31, 2013, we received notice from the Internal Revenue Service ("IRS") that the Congressional Joint Committee on Taxation finalized their review of the US Federal examinations for the income tax years 2008, 2009, and 2010 and refund years of 2004, 2005, 2006, and 2007 without exception to the conclusions reached by the IRS. This Joint Committee is a special nonpartisan Congressional committee involved with the analysis and drafting of federal tax legislation and as part of its mandate, reviews all federal tax refund claims over a certain amount. As a result of this determination, we have reduced the reserve for the unrecognized tax benefits related to prior years by $14,300. The reduction did not result in an impact to the effective tax rate since the reduction was offset by an increase in our valuation allowance.

Income taxes

3 Months Ended

Mar. 31, 2013

We recorded income tax expense from continuing operations for the three months ended March 31, 2013 of $2,517 which primarily consist of foreign and state income taxes. Our domestic deferred tax assets, net of deferred tax liabilities are subject to a valuation allowance; therefore, the domestic losses were not benefited.

We recorded income tax expense from continuing operations for the three months ended March 31, 2012 of $2,821 which primarily consist of foreign and state income taxes.

Income tax expense is based on an annual effective tax rate forecast, including estimates and assumptions that could change during the year.

As of March 31, 2013, all of Century's U.S. and certain foreign deferred tax assets, net of deferred tax liabilities continue to be subject to a valuation allowance. The realization of these assets is dependent on substantial future taxable income which at March 31, 2013, is not likely to be achieved.

During the three months ended March 31, 2013, we received notice from the Internal Revenue Service ("IRS") that the Congressional Joint Committee on Taxation finalized their review of the US Federal examinations for the income tax years 2008, 2009, and 2010 and refund years of 2004, 2005, 2006, and 2007 without exception to the conclusions reached by the IRS. This Joint Committee is a special nonpartisan Congressional committee involved with the analysis and drafting of federal tax legislation and as part of its mandate, reviews all federal tax refund claims over a certain amount. As a result of this determination, we have reduced the reserve for the unrecognized tax benefits related to prior years by $14,300. The reduction did not result in an impact to the effective tax rate since the reduction was offset by an increase in our valuation allowance.