Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 30, 2014	Dec. 31, 2013
Common stock subject to put options	0	296,828
Preferred stock, par value (USD per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000us-gaap_PreferredStockSharesAuthorized	1,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued	0us-gaap_PreferredStockSharesIssued	0us-gaap_PreferredStockSharesIssued
Preferred stock, shares outstanding	0us-gaap_PreferredStockSharesOutstanding	0us-gaap_PreferredStockSharesOutstanding
Common stock, par value (USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized	180,000,000us-gaap_CommonStockSharesAuthorized	34,043,001us-gaap_CommonStockSharesAuthorized
Common stock, shares, issued	29,544,557us-gaap_CommonStockSharesIssued	23,238,984us-gaap_CommonStockSharesIssued
Common stock, shares, outstanding	29,544,557us-gaap_CommonStockSharesOutstanding	23,238,984us-gaap_CommonStockSharesOutstanding

Face amount or stated value per share of common stock.

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