XML 48 R37.htm IDEA: XBRL DOCUMENT v3.20.2
Subsequent Events - Additional Information (Detail) - USD ($)
Sep. 26, 2020
Jun. 27, 2020
Feb. 27, 2020
Dec. 31, 2019
Sep. 28, 2019
Jun. 29, 2019
Dec. 31, 2018
Stockholders Equity $ 3,218,000 $ 2,200,000   $ 1,503,000 $ 935,000 $ 3,287,000 $ 6,745,000
Minimum [Member] | Shareholder Equity Rule [Member]              
Stockholders Equity     $ 2,500,000