Percentage of revenue attributable to disposal group, including, but not limited to, discontinued operation.

No definition available.

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Balance Type:	na
Period Type:	duration

- Definition

The effect of liquidating LIFO (last in first out) inventory layers on income.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section S99
-Paragraph 3
-Subparagraph (SAB Topic 11.F)
-URI http://asc.fasb.org/extlink&oid=27011343&loc=d3e100079-122729

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- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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-Publisher FASB
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-Publisher FASB
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-Section 50
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-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230

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Balance Type:	credit
Period Type:	duration

- Definition

This element represents the cash inflow during the period from the sale of a component of the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
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- Details

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- Details

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- Details

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- Details

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Note 3 - Assets and Liabilities Held For Sale Discontinued Operations (Details Textual) - USD ($)		3 Months Ended		6 Months Ended
	Oct. 09, 2018	Sep. 29, 2018	Sep. 29, 2018	Sep. 29, 2018	Sep. 30, 2017
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property				$ 4,060,000	$ 1,591,000
Modesto Facility [Member] \| Discontinued Operations, Disposed of by Sale [Member] \| Subsequent Event [Member]
Proceeds from Divestiture of Businesses, Net of Cash Divested, Total	$ 63,326,000
Modesto Facility [Member] \| Discontinued Operations, Held-for-sale [Member]
Disposal Group, Including Discontinued Operation, Revenue, Percent				15.00%
Effect of LIFO Inventory Liquidation on Income		$ 24,211,000	$ 24,211,000	$ 24,211,000
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property				4,975,000
Modesto Facility [Member] \| Discontinued Operations, Held-for-sale [Member] \| Employee Severance [Member]
Restructuring Charges, Total		$ 1,653,000		$ 1,648,000