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Income Taxes
6 Months Ended
Jun. 30, 2014
Income Taxes [Abstract]  
Income Taxes
6.Income Taxes

Intraperiod tax allocation rules require us to allocate our provision for income taxes between continuing operations and other categories of earnings, such as other comprehensive income. In periods in which we have a year-to-date pre-tax loss from continuing operations and pre-tax income in other categories of earnings, such as other comprehensive income, we must allocate the tax provision to the other categories of earnings. We then record a related tax benefit in continuing operations. During the six months ended June 30, 2014 and 2013, we recorded unrealized gains on our investments in available-for-sale securities in other comprehensive income net of taxes.  As a result, for the six months ended June 30, 2014 and 2013, we recorded a $1.4 million and $1.2 million tax benefit, respectively, on our condensed consolidated statements of operations and a $2.5 million and $10.0 million tax expense, respectively, in other comprehensive income.