Summary of Significant Accounting Policies - Schedule of Allowances for Accounts Receivable (Details) - USD ($) $ in Thousands |
12 Months Ended | |
---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
|
Allowances - accounts receivable | ||
Doubtful accounts | $ 205 | $ 693 |
Rental revenue adjustments | 411 | 438 |
Sales returns | 1,163 | 890 |
Total allowances - accounts receivable | $ 1,779 | $ 2,021 |
Doubtful accounts, percentage | 0.60% | 1.80% |
Rental revenue adjustments, percentage | 1.10% | 1.10% |
Sales returns, percentage | 3.20% | 2.30% |
Total allowances - accounts receivable, percentage | 4.90% | 5.20% |