CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 113,151	$ 48,580
Accounts receivable	1,537	4,919
Receivable tax research premium	8,190	2,329
Prepaid expenses and other current assets	5,139	6,483
Total current assets	128,017	62,311
Non-current assets:
Restricted cash	424
Property and equipment, net	5,126	4,337
Operating lease right of use assets	7,875
Finance lease right of use assets	1,602
Other non-current assets	701	1,603
Total non-current assets	15,728	5,940
Total assets	143,745	68,251
Current liabilities
Accounts payable	944	3,656
Deferred revenues	3,591	6,619
Operating lease liabilities, current	1,814
Accrued expenses and other current liabilities	8,406	4,420
Total current liabilities	14,755	14,695
Non-current liabilities
Loans payable, non-current	3,495	4,392
Operating lease liabilities, non-current	5,290
Deferred revenues, non-current	72	1,663
Other non-current liabilities	2,234	3,102
Total non-current liabilities	11,091	9,157
Total liabilities	25,846	23,852
Commitments and contingencies (Note 13)
Redeemable convertible preferred stock (series A, B, C and D), $0.0001 par value; 0 and 1,323,506 shares authorized, issued and outstanding at December 31, 2019 and December 31, 2018, respectively; aggregate liquidation preference of $0.0 million and $99.7 million at December 31, 2019 and December 31, 2018, respectively		104,774
Stockholders’ equity (deficit):
Additional paid-in capital	225,568	3,327
Accumulated other comprehensive loss	(4,653)	(3,720)
Accumulated deficit	(103,019)	(59,982)
Total stockholders’ equity (deficit)	117,899	(60,375)
Total liabilities, convertible preferred stock and stockholders’ equity (deficit)	143,745	68,251
Common stock
Stockholders’ equity (deficit):
Common stock	3	$ 0
Class A common stock
Stockholders’ equity (deficit):
Common stock	$ 0