Condensed Consolidated Balance Sheets (current period unaudited) (Parentheticals)	Mar. 28, 2015	Dec. 27, 2014
Common shares issued	22,627,762us-gaap_CommonStockSharesIssued	22,585,529us-gaap_CommonStockSharesIssued
Common shares oustanding	22,627,762us-gaap_CommonStockSharesOutstanding	22,585,529us-gaap_CommonStockSharesOutstanding

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Name:	us-gaap_CommonStockSharesOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant