Senior Facility - Schedule of Interest Expenses Recognized Related to Senior Facility (Parenthetical) (Detail)	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Debt Instrument [Line Items]
Canadian prime rate	8.05%
Senior Secured Term Loan Facility [Member]
Debt Instrument [Line Items]
Canadian prime rate		8.05%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration