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Accounts Receivable
9 Months Ended
Sep. 30, 2014
Accounts Receivable
2. Accounts Receivable

Accounts receivable are net of allowances for doubtful accounts of $22.0 million, $21.5 million, and $20.4 million as of September 30, 2014, September 30, 2013, and December 31, 2013, respectively.