| Accrued Expenses and Other Current Liabilities | 9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep. 30, 2020 | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Accrued Expenses and Other Current Liabilities | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Accrued Expenses and Other Current Liabilities | 9. Accrued Expenses and Other Current Liabilities 
 Accrued expenses and other current liabilities consist of the following ($ in thousands): 
 
 
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