Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Sales Revenue Disaggregated by Sales Channel and Geographic Region (Details)

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Summary of Significant Accounting Policies - Sales Revenue Disaggregated by Sales Channel and Geographic Region (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disaggregation Of Revenue [Line Items]      
Total sales revenue $ 340,546 $ 336,015 $ 225,492
Business to Business | Domestic      
Disaggregation Of Revenue [Line Items]      
Total sales revenue 106,428 116,581 83,390
Business to Business | International      
Disaggregation Of Revenue [Line Items]      
Total sales revenue 77,960 77,333 55,519
Direct-to-Consumer | Domestic      
Disaggregation Of Revenue [Line Items]      
Total sales revenue $ 156,158 $ 142,101 $ 86,583