Accounts Receivable and Allowance for Doubtful Accounts

6 Months Ended

Jun. 30, 2019

Receivables [Abstract]

Accounts Receivable and Allowance for Doubtful Accounts

5. ACCOUNTS RECEIVABLE AND ALLOWANCE FOR DOUBTFUL ACCOUNTS

Included in Accounts Receivable are long-term receivables of $75.9 million and $77.9 million as of June 30, 2019 and December 31, 2018, respectively, related to placement fees that are generally paid in installments over a period of three to four years. The carrying value of such long-term receivables approximates fair value. Long-term receivables are classified as Level II in the fair value hierarchy.

The Company does not have any long-term receivables on non-accrual status. Of receivables that originated as long-term, there were $10.0 million and $7.5 million as of June 30, 2019 and December 31, 2018, respectively, which were outstanding more than 90 days. There was no allowance for doubtful accounts with respect to such receivables as of June 30, 2019 or December 31, 2018.