Common Stock, Redeemable Common Stock, and Convertible Preferred Stock (converted to Common Stock) - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2020 USD ($) vote $ / shares shares	Dec. 31, 2019 $ / shares shares
Equity [Abstract]
Common stock, authorized shares	33,333,333	33,333,333
Common stock, par value (in usd per share) | $ / shares	$ 0.001	$ 0.001
Number of votes per share | vote	1
Dividends on common stock declared or paid | $	$ 0
Common stock, requested authorized shares	125,000,000