CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Series B Redeemable Convertible Preferred Stock
Preferred stock, par value	$ 0.00001	$ 0.00001
Preferred stock, shares authorized	13,715,330	13,715,330
Preferred stock, shares issued	13,715,330	13,715,330
Preferred stock, shares outstanding	13,715,330	13,715,330
Preferred stock, preference in liquidation	$ 11,680,000	$ 11,500,000
Series C Redeemable Convertible Preferred Stock
Preferred stock, par value	$ 0.00001	$ 0.00001
Preferred stock, shares authorized	26,732,361	26,732,361
Preferred stock, shares issued	26,732,361	26,732,361
Preferred stock, shares outstanding	26,732,361	26,732,361
Preferred stock, preference in liquidation	$ 30,617,000	$ 30,107,000
Series D Redeemable Convertible Preferred Stock
Preferred stock, par value	$ 0.00001	$ 0.00001
Preferred stock, shares authorized	16,758,996	16,758,996
Preferred stock, shares issued	16,390,217	16,390,217
Preferred stock, shares outstanding	16,390,217	16,390,217
Preferred stock, preference in liquidation	$ 28,000,000	$ 27,500,000
Class A Common Stock
Common stock, par value	$ 0.00001	$ 0.00001
Common stock, shares authorized	62,220,020	62,220,020
Common stock, shares issued	0	0
Common stock, shares outstanding	$ 0	$ 0
Class B Common Stock
Common stock, par value	$ 0.00001	$ 0.00001
Common stock, shares authorized	16,822,202	16,822,202
Common stock, shares issued	2,835,099	2,563,765
Common stock, shares outstanding	$ 2,835,099	$ 2,563,765
Series A Convertible Preferred Stock
Preferred stock, par value	$ 0.00001	$ 0.00001
Preferred stock, shares authorized	5,013,333	5,013,333
Preferred stock, shares issued	5,013,333	5,013,333
Preferred stock, shares outstanding	5,013,333	5,013,333
Preferred stock, preference in liquidation	$ 1,253,000	$ 1,253,000