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Income Taxes
6 Months Ended
Jun. 30, 2013
Income Tax Disclosure [Abstract]  
Income Taxes
Income Taxes
The total amount of gross unrecognized tax benefit that would reduce the Company's effective tax rates at June 30, 2013 and June 30, 2012, was $1.2 million and $0.5 million, respectively. The $0.7 million increase in the gross unrecognized tax benefits from June 30, 2012 to June 30, 2013 resulted from an increase in ASC 740-10-25-6, Accounting for Uncertainty in Income Taxes, reserves related to acquired businesses and previous year tax positions. Accrued interest expense included with accrued income taxes in the Company's Condensed Consolidated Statements of Financial Position was less than $0.1 million at both June 30, 2013 and December 31, 2012.

As of June 30, 2013, the Company and its significant subsidiaries are subject to examination for the years after 2006 in Brazil, after 2007 in Canada, and after 2010 in the United States. The Company and its subsidiaries are subject to examination in certain states within the United States either after 2007 or after 2008.