Retirement Plans - Additional Information (Details) - USD ($)	12 Months Ended
Dec. 31, 2019	Jan. 01, 2019	Jan. 02, 2018
Defined Contribution Plan Disclosure [Line Items]
Matching contributions	$ 94,000	$ 86,000	$ 82,000

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.

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