Income Taxes	3 Months Ended
Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Note 8 – Income Taxes The Company’s effective income tax rates (income tax expense as a percentage of income before income taxes) were 22.5% and 18.2% for the three months ended March 31, 2019 and 2018, respectively. The Company’s effective tax rates differ from the statutory federal rate of 21% due to state and foreign income taxes incurred, as well as permanent differences between amounts reported for financial statement purposes and amounts reported for income tax purposes, including the recognition of excess tax benefits or tax deficiencies associated with share-based payment transactions through income tax expense. In connection with the Company’s June 2010 spin-off from its prior parent, the Company entered into a tax sharing agreement which governs the Company’s and its prior parent’s respective rights, responsibilities and obligations for certain tax related matters. At March 31, 2019 and December 31, 2018, the Company had a net payable to its prior parent of $15.8 million and $15.6 million, respectively, related to tax matters prior to the spin-off. This amount is included in the Company’s condensed consolidated balance sheets in accounts payable and accrued liabilities. The increase during the current year was primarily the result of an additional accrual for tax matters prior to the spin-off. The Company evaluates the realizability of its deferred tax assets by assessing the valuation allowance and makes adjustments to the allowance as necessary. The factors used to assess the likelihood of realization include the Company’s forecast of future taxable income and available tax planning strategies that could be implemented to realize the deferred tax assets. The Company’s ability or failure to achieve forecasted taxable income in the applicable taxing jurisdictions could affect the ultimate realization of deferred tax assets. Based on actual future operating results in certain jurisdictions, it is possible that the current valuation allowance positions of those jurisdictions could be adjusted in the next 12 months. As of March 31, 2019 and December 31, 2018, the liability for income taxes associated with uncertain tax positions was $13.4 million and $13.3 million, respectively. As of March 31, 2019 and December 31, 2018, the liability could be reduced by $3.7 million due to offsetting tax benefits associated with the correlative effects of potential adjustments, including timing adjustments and state income taxes. The net amounts of $9.7 million and $9.6 million as of March 31, 2019 and December 31, 2018, respectively, if recognized, would favorably affect the Company’s effective tax rate. The Company’s continuing practice is to recognize interest and penalties, if any, related to uncertain tax positions in income tax expense. As of March 31, 2019 and December 31, 2018, the Company had accrued $6.0 million and $5.8 million, respectively, of interest and penalties (net of tax benefits of $1.7 million and $1.6 million, respectively) related to uncertain tax positions. It is reasonably possible that the amount of the unrecognized benefit with respect to certain of the Company’s unrecognized tax positions may significantly decrease within the next 12 months. Any such change may be the result of ongoing audits or the expiration of federal and state statutes of limitations for the assessment of taxes. The Company, or one of its subsidiaries, files income tax returns in the U.S. federal jurisdiction, various state jurisdictions and various non-U.S. jurisdictions. The primary non-federal jurisdictions are California, Canada, India and the United Kingdom. As of March 31, 2019, the Company had concluded U.S. federal income tax examinations through 2015 and is generally no longer subject to state and non-U.S. income tax examinations for years prior to 2005.

Income Taxes

3 Months Ended

Mar. 31, 2019

Note 8 – Income Taxes

The Company’s effective income tax rates (income tax expense as a percentage of income before income taxes) were 22.5% and 18.2% for the three months ended March 31, 2019 and 2018, respectively. The Company’s effective tax rates differ from the statutory federal rate of 21% due to state and foreign income taxes incurred, as well as permanent differences between amounts reported for financial statement purposes and amounts reported for income tax purposes, including the recognition of excess tax benefits or tax deficiencies associated with share-based payment transactions through income tax expense.

In connection with the Company’s June 2010 spin-off from its prior parent, the Company entered into a tax sharing agreement which governs the Company’s and its prior parent’s respective rights, responsibilities and obligations for certain tax related matters. At March 31, 2019 and December 31, 2018, the Company had a net payable to its prior parent of $15.8 million and $15.6 million, respectively, related to tax matters prior to the spin-off. This amount is included in the Company’s condensed consolidated balance sheets in accounts payable and accrued liabilities. The increase during the current year was primarily the result of an additional accrual for tax matters prior to the spin-off.

The Company evaluates the realizability of its deferred tax assets by assessing the valuation allowance and makes adjustments to the allowance as necessary. The factors used to assess the likelihood of realization include the Company’s forecast of future taxable income and available tax planning strategies that could be implemented to realize the deferred tax assets. The Company’s ability or failure to achieve forecasted taxable income in the applicable taxing jurisdictions could affect the ultimate realization of deferred tax assets. Based on actual future operating results in certain jurisdictions, it is possible that the current valuation allowance positions of those jurisdictions could be adjusted in the next 12 months.

As of March 31, 2019 and December 31, 2018, the liability for income taxes associated with uncertain tax positions was $13.4 million and $13.3 million, respectively. As of March 31, 2019 and December 31, 2018, the liability could be reduced by $3.7 million due to offsetting tax benefits associated with the correlative effects of potential adjustments, including timing adjustments and state income taxes. The net amounts of $9.7 million and $9.6 million as of March 31, 2019 and December 31, 2018, respectively, if recognized, would favorably affect the Company’s effective tax rate.

The Company’s continuing practice is to recognize interest and penalties, if any, related to uncertain tax positions in income tax expense. As of March 31, 2019 and December 31, 2018, the Company had accrued $6.0 million and $5.8 million, respectively, of interest and penalties (net of tax benefits of $1.7 million and $1.6 million, respectively) related to uncertain tax positions.

It is reasonably possible that the amount of the unrecognized benefit with respect to certain of the Company’s unrecognized tax positions may significantly decrease within the next 12 months. Any such change may be the result of ongoing audits or the expiration of federal and state statutes of limitations for the assessment of taxes.

The Company, or one of its subsidiaries, files income tax returns in the U.S. federal jurisdiction, various state jurisdictions and various non-U.S. jurisdictions. The primary non-federal jurisdictions are California, Canada, India and the United Kingdom. As of March 31, 2019, the Company had concluded U.S. federal income tax examinations through 2015 and is generally no longer subject to state and non-U.S. income tax examinations for years prior to 2005.