Revenues from Contracts with Customers - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Deferred Revenue Arrangement [Line Items]
Deferred revenue	$ 7,900	$ 1,400
Contract liabilities	14,189	7,856
Accounts Payable, Accrued Expenses and Other Liabilities
Deferred Revenue Arrangement [Line Items]
Contract liabilities	$ 2,200	1,100
Advisory Services
Deferred Revenue Arrangement [Line Items]
Explanation of remaining performance obligations expected to be recognized as revenue	the Company generally expects to recognize this revenue within the next twelve months.
Revenue recognized related to performance obligations that were fully satisfied in prior periods	$ 33,700	$ 19,100