Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Accounts Receivable (Details)

v3.10.0.1
Summary of Significant Accounting Policies - Accounts Receivable (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Accounting Policies [Abstract]    
Customer receivables $ 63,150 $ 59,263
Other receivables 1,128 1,319
Rebates receivable 3,445 1,442
Allowance for doubtful accounts (2,369) (1,665)
Accounts receivable, net $ 65,354 $ 60,359