Summary of Significant Accounting Policies - Summary of Amounts and Classification of Assets and Liabilities of the VIE in Our Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 13,610	$ 3,091
Prepaid expenses and other current assets	1,074	1,108
Total assets	23,855	6,323
Accounts payable	1,385	497
Deferred revenue	5,803	4,195
Total liabilities	47,764	15,288
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Cash and cash equivalents	379	45
Accounts receivable	564	94
Prepaid expenses and other current assets	26	29
Total assets	969	168
Accounts payable	9	7
Accrued liabilities	100	14
Deferred revenue	73	0
Intercompany payable	685	147
Total liabilities	$ 867	$ 168