Overview - Additional Information (Detail)		12 Months Ended
	Feb. 07, 2019 shares	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Ratio of Group A Units Recapitalized as Group A Units	0.65
Ratio of Group A Units Recapitalized as Group A-1 Units	0.35
Number of Group A Units forfeited in connection with Recapitalization	749,813
Reverse share split ratio		0.10