Annual report pursuant to Section 13 and 15(d)

Line of Credit - Additional Information (Detail)

v3.10.0.1
Line of Credit - Additional Information (Detail) - Boulder Road LLC [Member] - Great Western [Member] - Revolving Line of Credit [Member] - USD ($)
 12 Months Ended
Dec. 28, 2017
Dec. 31, 2018
Line Of Credit Facility [Line Items]    
Line of credit, initiation date Dec. 28, 2017  
Line of credit, maximum borrowing capacity $ 13,500,000 $ 12,500,000
Reduction in line of credit borrowing capacity, semi-annually $ 500,000  
Reduction in line of credit borrowing capacity, Description   The Credit Agreement provides for a revolving line of credit for up to $13.5 million, which is reduced by $500,000 semi-annually, and is subject to certain covenants applicable to Boulder Road LLC.
Line of credit, maturity date Dec. 28, 2020  
Line of credit, interest rate   6.00%
Floor [Member]    
Line Of Credit Facility [Line Items]    
Line of credit, interest rate   4.25%
Prime Rate [Member]    
Line Of Credit Facility [Line Items]    
Line of credit, interest rate, basis spread on variable rate 0.50%