Stockholders' Equity - Warrants to Purchase Common Shares - Additional Information (Detail) - Warrants [Member] - $ / shares			6 Months Ended
	Jun. 26, 2018	Mar. 28, 2018	Jun. 30, 2020
Investor [Member]
Class of Stock [Line Items]
Weighted average remaining life of lender warrants			4 years 9 months 14 days
Senior Secured Term Loan [Member]
Class of Stock [Line Items]
Warrants issued in connection with term loan facility	77,721	409,091
Exercise price of issued warrants	$ 1.93	$ 1.10
Warrants exercise period	7 years	7 years