Stockholders' Equity - Warrants to Purchase Common Shares - Additional Information (Detail) - Warrants [Member] - SWK [Member] - $ / shares			9 Months Ended
	Jun. 26, 2018	Mar. 28, 2018	Sep. 30, 2021
Senior Secured Term Loan [Member]
Class Of Stock [Line Items]
Warrants issued to purchase shares of common stock	7,773	40,910
Exercise price of issued warrants	$ 19.30	$ 11.00
Warrants exercise period	7 years	7 years
Investor [Member]
Class Of Stock [Line Items]
Weighted average remaining life of lender warrants			3 years 6 months