CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 107,035	$ 101,559
Marketable securities	111,977	135,457
Accounts receivable	3,685	3,467
Prepaid expenses and other current assets	2,856	3,090
Total current assets	225,553	243,573
Property and equipment, net	3,222	3,446
Restricted cash	275	275
Other assets	108	141
Total assets	229,158	247,435
Current liabilities:
Accounts payable	4,623	5,167
Accrued expenses	5,615	6,639
Deferred revenue, current portion	26,497	23,450
Deferred rent, current portion	106	94
Total current liabilities	36,841	35,350
Long-term liabilities:
Deferred revenue, net of current portion	64,002	70,954
Deferred rent, net of current portion	180	213
Total liabilities	101,023	106,517
Stockholders’ Equity
Preferred shares, $0.0001 par value, 10,000,000 shares authorized, no shares issued and outstanding as of March 31, 2020 and December 31, 2019
Common shares, $0.0001 par value, 400,000,000 shares authorized, 30,283,725 shares issued and outstanding as of March 31, 2020 and 30,110,251 shares issued and outstanding as of December 31, 2019	3	3
Additional paid‑in capital	241,776	238,384
Accumulated deficit	(114,259)	(97,513)
Accumulated other comprehensive income	615	44
Total stockholders’ equity	128,135	140,918
Total liabilities and stockholders’ equity	$ 229,158	$ 247,435