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Summary of Significant Accounting Policies (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 01, 2017 | Jul. 02, 2016 | Jul. 01, 2017 | Jul. 02, 2016
Summary of Significant Accounting Policies [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent |  |  | $ 67,700 | $ 51,800
Minimum fiscal year period in days |  |  | 364 days |
Maximum fiscal year period in days |  |  | 371 days |
Fiscal quarter period in days | 91 days | 91 days |  |
Fiscal Year to Date in Days |  |  | 182 days | 182 days
Basic: |  |  |  |
Net income | $ 9,149 | $ 31,999 | $ 14,978 | $ 33,078
Shares (in shares) | 164,718,000 | 164,634,000 | 164,728,000 | 164,534,000
Per Share (in usd per share) | $ 0.06 | $ 0.19 | $ 0.09 | $ 0.20
Effect of dilutive securities: [Abstract] |  |  |  |
Add: Option shares in the money and dilutive effect of non-vested stock (in shares) | 4,166,000 | 1,793,000 | 3,089,000 | 975,000
Less: Pro forma treasury shares (in shares) | (2,053,000) | (953,000) | (1,469,000) | (496,000)
Diluted: |  |  |  |
Net Income | $ 9,149 | $ 31,999 | $ 14,978 | $ 33,078
Shares (in shares) | 166,831,000 | 165,474,000 | 166,348,000 | 165,013,000
Per Share (in usd per share) | $ 0.05 | $ 0.19 | $ 0.09 | $ 0.20
Stock Options [Member] |  |  |  |
Antidilutive Securities [Abstract] |  |  |  |
Antidilutive securities excluded from computation of earnings per share (in shares) | 772,402 | 1,231,664 | 791,116 | 1,080,410
Non Vested Stock [Member] |  |  |  |
Antidilutive Securities [Abstract] |  |  |  |
Antidilutive securities excluded from computation of earnings per share (in shares) | 680,100 | 899,422 | 853,313 | 824,068

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