Consolidated Balance Sheets (Parenthetical) (USD $)	Apr. 04, 2015	Dec. 31, 2014
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000us-gaap_PreferredStockSharesAuthorized	10,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued	0us-gaap_PreferredStockSharesIssued	0us-gaap_PreferredStockSharesIssued
Treasury stock, shares	20,322us-gaap_TreasuryStockShares	20,498us-gaap_TreasuryStockShares
Class A Common Stock [Member]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	150,000	150,000
Common stock, shares issued	72,152	72,152

Face amount or stated value per share of common stock.

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