(5) Share-Based Compensation Plans - Schedule of Share-Based Compensation (Details)	12 Months Ended
Dec. 28, 2019 USD ($) shares
Retirement Benefits [Abstract]
Outstanding at beginning of year	1,753,605
Granted	199,500
Exercised
Forfeited	127,000
Expired	32,000
Outstanding at end of year	1,794,105
Options exercisable at year-end	1,471,905
Aggregate Intrinsic Value Outstanding at end of year \| $	$ 11,120
Aggregate Intrinsic Value Outstanding Exercisable at end of year \| $	$ 10,550
Weighted remaining contractual life outstanding	3 years 8 months
Weighted remaining contractual life outstanding exercisable	3 years 1 month

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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