XML 35 R23.htm IDEA: XBRL DOCUMENT
v3.20.4

COVID-19 | 12 Months Ended
--- | ---
Dec. 26, 2020
COVID-19 [Abstract] |
COVID-19 | Note 14 COVID-19 On March 11, 2020, the World Health Organization declared that the novel coronavirus (COVID-19) had become a pandemic, and on March 13, the U.S. President declared a National Emergency concerning the disease. Additionally, in March 2020, state governments in the Company’s geographic operating area began instituting preventative shut down measures in order to combat the novel coronavirus pandemic. The coronavirus and actions taken to mitigate the spread of it have had and are expected to continue to have an adverse impact on the economies and financial markets of the geographical area in which the Company operates. On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (CARES Act) was enacted to amongst other provisions, provide emergency assistance for individuals, families and businesses affected by the novel coronavirus pandemic. The Company’s business being deemed essential resulted in incremental financial performance that may not be indicative of future financial results and there remains uncertainty and increased risks concerning its employees, customers, supply chain and government regulation.

X
- Definition COVID-19 [Abstract] + References No definition available. + Details
Name: | wmk_Covid19Abstract
Namespace Prefix: | wmk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition COVID-19 [Text Block] + References No definition available. + Details
Name: | wmk_Covid19TextBlock
Namespace Prefix: | wmk_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration