Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Segment Information (Detail)

v3.22.1
Summary of Significant Accounting Policies - Segment Information (Detail) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 26, 2021
Jun. 27, 2020
Jun. 26, 2021
Jun. 27, 2020
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total Segment Operating Income $ 11,189,950 $ 20,130,980 $ 35,438,813 $ 40,319,056
Transaction Bonus Related To Business Combination        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total Segment Operating Income 11,189,950   35,438,813  
Previously Reported | Transaction Bonus Related To Business Combination        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total Segment Operating Income 14,340,720   38,589,583  
Revision of prior period, adjustment | Transaction Bonus Related To Business Combination        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total Segment Operating Income (3,150,770)   (3,150,770)  
Reportable geographical components | Janus North America        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total Segment Operating Income 16,581,240 20,206,505 40,496,548 39,646,405
Reportable geographical components | Janus North America | Transaction Bonus Related To Business Combination        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total Segment Operating Income 16,581,240   40,496,548  
Reportable geographical components | Janus North America | Previously Reported | Transaction Bonus Related To Business Combination        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total Segment Operating Income 12,587,297   36,502,605  
Reportable geographical components | Janus North America | Revision of prior period, adjustment | Transaction Bonus Related To Business Combination        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total Segment Operating Income 3,993,943   3,993,943  
Reportable geographical components | Janus International        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total Segment Operating Income (5,389,141) (88,387) (5,082,470) 617,920
Reportable geographical components | Janus International | Transaction Bonus Related To Business Combination        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total Segment Operating Income (5,389,141)   (5,082,470)  
Reportable geographical components | Janus International | Previously Reported | Transaction Bonus Related To Business Combination        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total Segment Operating Income 1,755,572   2,062,243  
Reportable geographical components | Janus International | Revision of prior period, adjustment | Transaction Bonus Related To Business Combination        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total Segment Operating Income (7,144,713)   (7,144,713)  
Intersegment        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total Segment Operating Income (2,149) $ 12,862 24,735 $ 54,731
Intersegment | Transaction Bonus Related To Business Combination        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total Segment Operating Income (2,149)   24,735  
Intersegment | Previously Reported | Transaction Bonus Related To Business Combination        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total Segment Operating Income (2,149)   24,735  
Operating Segments | Transaction Bonus Related To Business Combination        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total Segment Operating Income 11,189,950   35,438,813  
Operating Segments | Previously Reported | Transaction Bonus Related To Business Combination        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total Segment Operating Income 14,340,720   38,589,583  
Operating Segments | Revision of prior period, adjustment | Transaction Bonus Related To Business Combination        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total Segment Operating Income $ (3,150,770)   $ (3,150,770)