Shareholders' Equity - Summary of Share Count and Par Value Data Related to Shareholders' Equity (Detail) (USD $)	Sep. 28, 2014	Dec. 31, 2013	Sep. 29, 2013	Dec. 31, 2012
Preferred Stock
Par value per share
Shares authorized	25,000,000	25,000,000
Shares outstanding
Common Stock
Par value per share
Shares authorized	75,000,000	75,000,000
Shares issued	56,082,249	55,808,008
Shares outstanding	33,544,723	33,558,864	33,663,312	33,433,128
Treasury stock
Shares held	22,537,526	22,249,144