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Accounts Receivable
6 Months Ended
Jun. 30, 2015
Accounts Receivable
2. Accounts Receivable

Accounts receivable are net of allowances for doubtful accounts of $24.9 million, $21.4 million, and $26.3 million as of June 30, 2015, June 30, 2014, and December 31, 2014, respectively.