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Note 5 - Business Acquisitions (Details) - Preliminary Purchase Price Allocation (USD $) In Thousands, unless otherwise specified	0 Months Ended	9 Months Ended
	Aug. 29, 2014	Dec. 27, 2014	Mar. 29, 2014
Note 5 - Business Acquisitions (Details) - Preliminary Purchase Price Allocation [Line Items]
Goodwill		$ 20,991us-gaap_Goodwill	$ 17,384us-gaap_Goodwill
Customer Relationships [Member] \| Ulrich Acquisition [Member]
Note 5 - Business Acquisitions (Details) - Preliminary Purchase Price Allocation [Line Items]
Intangible Assets		2,179
Noncompete Agreements [Member] \| Ulrich Acquisition [Member]
Note 5 - Business Acquisitions (Details) - Preliminary Purchase Price Allocation [Line Items]
Intangible Assets		114
Ulrich Acquisition [Member]
Note 5 - Business Acquisitions (Details) - Preliminary Purchase Price Allocation [Line Items]
Goodwill		3,980
Deferred Tax Liability		(685)
		5,588
Plus: Current Assets		937
Non-Current Assets		379
Less: Current Liabilities		(223)
Total Purchase Price	$ 6,700	$ 6,681