Income Taxes	6 Months Ended
Jun. 30, 2014
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES For the three and six months ended June 30, 2014 and 2013, the Company recorded income tax provisions of $26.4 million and $28.7 million and $58.9 million and $55.1 million, respectively. The effective tax rate for the six months ended June 30, 2014 and 2013 was 39.0% and 38.3%, respectively. The increase in the effective tax rate for the six months ended June 30, 2014 resulted primarily from the recognition of a discrete tax charge. The prior year period included a discrete tax benefit, which lowered the effective rate. As of June 30, 2014 and December 31, 2013, the Company had $29.4 million and $26.7 million, respectively, of uncertain tax positions excluding interest and penalties, which, if recognized in the future, would affect the annual effective income tax rate. Reductions to uncertain tax positions primarily from the lapse of the applicable statutes of limitations during the next twelve months are estimated to be approximately $0.2 million, not including any potential new additions. Estimated interest costs and penalties, which are classified as part of the provision for income taxes in the Company’s condensed consolidated statements of income, were $0.5 million and $0.2 million for the three months ended June 30, 2014 and 2013, respectively, and $1.1 million and $0.4 million for the six months ended June 30, 2014 and 2013, respectively. Accrued interest and penalties were $4.3 million and $3.2 million as of June 30, 2014 and December 31, 2013, respectively. The Company is subject to U.S. federal tax, Illinois, New Jersey, and New York state taxes and Washington, D.C. taxes, as well as taxes in other local jurisdictions. The Company has open tax years from 2007 on for New York, 2008 on for Federal, 2009 on for Illinois, and 2010 on for New Jersey and Washington, D.C. The Internal Revenue Service is currently auditing 2010 and is looking at specific line items from 2008 to 2012 due to the filing by the Company of amended returns containing the recognition of certain credits and deductions. The Illinois Department of Revenue is currently auditing the 2009 and 2010 tax years. The New York State Department of Taxation and Finance is currently auditing the 2007 through 2012 tax years. The New Jersey Division of Taxation is currently auditing the 2010 through 2012 tax years.

Income Taxes

6 Months Ended

Jun. 30, 2014

INCOME TAXES

For the three and six months ended June 30, 2014 and 2013, the Company recorded income tax provisions of $26.4 million and $28.7 million and $58.9 million and $55.1 million, respectively. The effective tax rate for the six months ended June 30, 2014 and 2013 was 39.0% and 38.3%, respectively. The increase in the effective tax rate for the six months ended June 30, 2014 resulted primarily from the recognition of a discrete tax charge. The prior year period included a discrete tax benefit, which lowered the effective rate.

As of June 30, 2014 and December 31, 2013, the Company had $29.4 million and $26.7 million, respectively, of uncertain tax positions excluding interest and penalties, which, if recognized in the future, would affect the annual effective income tax rate. Reductions to uncertain tax positions primarily from the lapse of the applicable statutes of limitations during the next twelve months are estimated to be approximately $0.2 million, not including any potential new additions.

Estimated interest costs and penalties, which are classified as part of the provision for income taxes in the Company’s condensed consolidated statements of income, were $0.5 million and $0.2 million for the three months ended June 30, 2014 and 2013, respectively, and $1.1 million and $0.4 million for the six months ended June 30, 2014 and 2013, respectively. Accrued interest and penalties were $4.3 million and $3.2 million as of June 30, 2014 and December 31, 2013, respectively.

The Company is subject to U.S. federal tax, Illinois, New Jersey, and New York state taxes and Washington, D.C. taxes, as well as taxes in other local jurisdictions. The Company has open tax years from 2007 on for New York, 2008 on for Federal, 2009 on for Illinois, and 2010 on for New Jersey and Washington, D.C. The Internal Revenue Service is currently auditing 2010 and is looking at specific line items from 2008 to 2012 due to the filing by the Company of amended returns containing the recognition of certain credits and deductions. The Illinois Department of Revenue is currently auditing the 2009 and 2010 tax years. The New York State Department of Taxation and Finance is currently auditing the 2007 through 2012 tax years. The New Jersey Division of Taxation is currently auditing the 2010 through 2012 tax years.