Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Apr. 04, 2015	Dec. 31, 2014
Stockholders' equity:
Preferred stock, par value (in usd per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	60,000us-gaap_PreferredStockSharesAuthorized	60,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, issued (in shares)	0us-gaap_PreferredStockSharesIssued	0us-gaap_PreferredStockSharesIssued
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	150,000,000us-gaap_CommonStockSharesAuthorized	150,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued (in shares)	81,247,000us-gaap_CommonStockSharesIssued	81,070,000us-gaap_CommonStockSharesIssued
Treasury stock, shares (in shares)	8,157,000us-gaap_TreasuryStockShares	8,157,000us-gaap_TreasuryStockShares

Face amount or stated value per share of common stock.

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