CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($)
Increase (Decrease) in Temporary Equity [Roll Forward]
Accrued dividends	$ 1,190
Redeemable Convertible Preferred Stock
Increase (Decrease) in Temporary Equity [Roll Forward]
Balance, beginning of period	69,107
Balance, end of period	70,297
Series B Redeemable Convertible Preferred Stock
Increase (Decrease) in Temporary Equity [Roll Forward]
Balance, beginning of period	11,500
Balance, end of period	11,680
Series C Redeemable Convertible Preferred Stock
Increase (Decrease) in Temporary Equity [Roll Forward]
Balance, beginning of period	30,107
Balance, end of period	30,617
Series D Redeemable Convertible Preferred Stock
Increase (Decrease) in Temporary Equity [Roll Forward]
Balance, beginning of period	27,500
Balance, end of period	$ 28,000