Income taxes	6 Months Ended
Jun. 30, 2011
Income taxes	Income taxes The Company’s effective tax rate for the year is dependent on many factors, including the impact of enacted tax laws in jurisdictions in which it operates and the amount of taxable income it earns. The effective tax rates for the three and six months ended June 30, 2011 was 49.1% and 50.9%, respectively, primarily as a result of adjustments to reduce deferred tax assets resulting from the forfeiture of certain non-qualified stock options. Excluding these adjustments, the effective tax rate for the three and six months ended June 30, 2011 was 40.5% and 40.1%, respectively. The Company’s effective tax rate for the balance of 2011 is estimated to be approximately 40%. The deferred tax liability represents primarily the difference between the tax and accounting basis of intangible assets acquired in the GFA merger. In addition, due primarily to the 2010 restructurings, certain non-qualified stock options for terminated employees were forfeited during the first and second quarters, resulting in reductions of deferred tax assets (future benefits that were recorded when the options were granted) of $955 and $566, respectively, since the Company would no longer be able to recognize those benefits. Shares are legally forfeited based on the terms of the severance arrangements, as dictated by the Stock Option Plan and/or by the Employee's Stock Option Award Agreement. The Internal Revenue Service ("IRS") is currently examining the 2008 and 2009 federal tax returns. The Company does not anticipate any material adverse adjustments resulting from this review. Prior periods have either been audited or are no longer subject to IRS audit. In most state jurisdictions, the Company is no longer subject to examination by tax authorities for years prior to 2006.

Income taxes

6 Months Ended

Jun. 30, 2011

The Company’s effective tax rate for the year is dependent on many factors, including the impact of enacted tax laws in jurisdictions in which it operates and the amount of taxable income it earns. The effective tax rates for the three and six months ended June 30, 2011 was 49.1% and 50.9%, respectively, primarily as a result of adjustments to reduce deferred tax assets resulting from the forfeiture of certain non-qualified stock options. Excluding these adjustments, the effective tax rate for the three and six months ended June 30, 2011 was 40.5% and 40.1%, respectively. The Company’s effective tax rate for the balance of 2011 is estimated to be approximately 40%.

The deferred tax liability represents primarily the difference between the tax and accounting basis of intangible assets acquired in the GFA merger. In addition, due primarily to the 2010 restructurings, certain non-qualified stock options for terminated employees were forfeited during the first and second quarters, resulting in reductions of deferred tax assets (future benefits that were recorded when the options were granted) of $955 and $566, respectively, since the Company would no longer be able to recognize those benefits. Shares are legally forfeited based on the terms of the severance arrangements, as dictated by the Stock Option Plan and/or by the Employee's Stock Option Award Agreement.

The Internal Revenue Service ("IRS") is currently examining the 2008 and 2009 federal tax returns. The Company does not anticipate any material adverse adjustments resulting from this review. Prior periods have either been audited or are no longer subject to IRS audit. In most state jurisdictions, the Company is no longer subject to examination by tax authorities for years prior to 2006.