Accounts Receivable

9 Months Ended

Sep. 30, 2016

Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]

Accounts Receivable

Accounts Receivable

Accounts receivable are net of an allowance for doubtful accounts of $7.0 million at September 30, 2016 and $6.9 million at December 31, 2015.