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Note 13 - Income Taxes (Details Textual) - USD ($)	9 Months Ended		12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Mar. 31, 2017
Effective Income Tax Rate Reconciliation, Percent, Total	(137.70%)	34.30%
Effective Income Tax Rate Reconciliation, Increase (Decrease), Percent	(172.00%)
Effective Income Tax Rate Reconciliation, Increase (Decrease), Amount	$ (1,241,000)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%		35.00%

X

- Definition

The increase (decrease) in the current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations during the period.

+ References

No definition available.

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- Definition

The increase (decrease) in the percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations during the period.

+ References

No definition available.

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
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-Section 50
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-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
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