Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Note 10 - Shared-based Compensation and Employee Benefits Plans (Details Textual) - USD ($)		3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 20, 2018	Dec. 28, 2019	Dec. 29, 2018	Dec. 28, 2019	Dec. 29, 2018	Mar. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares		13,240	423	47,700	1,940
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value		$ 61,000	$ 5,000	$ 185,000	$ 34,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		0	0	0	0
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period				10 years
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total		$ 452,000		$ 452,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition				2 years 328 days
Share-based Payment Arrangement, Expense		$ 56,000	$ 28,000	$ 159,000	$ 85,000
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period				0
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		0	0	0	0	20,680
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total		$ 9,600		$ 9,600
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition				91 days
Share-based Payment Arrangement, Expense		$ 9,600	$ 26,000	$ 70,000	$ 83,000
The 2018 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	166,667
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		42,493		42,493
The 2018 Equity Incentive Plan [Member] \| Share-based Payment Arrangement, Option [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
The 2018 Equity Incentive Plan [Member] \| Share-based Payment Arrangement, Option [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years
Equity Incentive Plan 2005 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		0		0
Stock Option Plan 2000 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		0		0