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Accounting Policies (Details 3) $ / shares in Units, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 03, 2016 USD ($) item $ / shares shares | Mar. 29, 2015 USD ($) $ / shares shares | Dec. 31, 2015 | Dec. 31, 2014
Shipping and Handling |  |  |  |
Shipping and handling costs included in selling, general and administrative expense | $ | $ 11.4 | $ 14.4 |  |
Research and Development |  |  |  |
Research and development costs included in selling, general, and administrative expense | $ | $ 6.6 | $ 6.4 |  |
Second Amended and Restated 2004 Stock Incentive Plan |  |  |  |
Stock-based compensation |  |  |  |
Number of stock incentive plans | item | 1 |  |  |
Second Amended and Restated 2004 Stock Incentive Plan | Stock options |  |  |  |
Stock-based compensation |  |  |  |
Vesting period | 4 years |  |  | 3 years
Percentage of stock options becoming exercisable | 25.00% |  |  | 33.00%
Expiration period (years) | 10 years |  |  |
Options granted (in shares) | 0 | 0 |  |
Second Amended and Restated 2004 Stock Incentive Plan | Stock options | Class A |  |  |  |
Stock-based compensation |  |  |  |
Minimum exercise price as percentage of fair market value of common stock on grant date | 100.00% |  |  |
Second Amended and Restated 2004 Stock Incentive Plan | Restricted stock |  |  |  |
Stock-based compensation |  |  |  |
Granted (in shares) | 110,295 |  |  |
Second Amended and Restated 2004 Stock Incentive Plan | Deferred shares |  |  |  |
Stock-based compensation |  |  |  |
Vesting rate per year for maximum vesting period | 0.50 |  | 0.33 |
Second Amended and Restated 2004 Stock Incentive Plan | Deferred shares | Maximum |  |  |  |
Stock-based compensation |  |  |  |
Vesting period | 3 years |  | 2 years |
Second Amended and Restated 2004 Stock Incentive Plan | Performance stock units |  |  |  |
Stock-based compensation |  |  |  |
Granted (in shares) | 106,724 | 0 |  |
Second Amended and Restated 2004 Stock Incentive Plan | Performance stock units | Minimum |  |  |  |
Stock-based compensation |  |  |  |
Number of common shares for each unit of award held | 0 |  |  |
Management Stock Purchase Plan | Class A |  |  |  |
Stock-based compensation |  |  |  |
Shares authorized | 2,000,000 |  |  |
Management Stock Purchase Plan | Restricted stock units (RSUs) |  |  |  |
Stock-based compensation |  |  |  |
Granted (in shares) | 88,882 | 59,995 |  |
Increased exercise price as percentage of fair market value of common stock on grant date in next fiscal year | 80.00% |  |  |
Fair value assumptions |  |  |  |
Expected life (years) | 3 years | 3 years |  |
Expected stock price volatility (as a percent) | 24.80% | 23.40% |  |
Expected dividend yield (as a percent) | 1.30% | 1.20% |  |
Risk-free interest rate (as a percent) | 0.90% | 1.10% |  |
Weighted average grant-date fair value (in dollars per share) | $ / shares | $ 18.15 | $ 19.04 |  |
Management Stock Purchase Plan | Restricted stock units (RSUs) | Minimum |  |  |  |
Stock-based compensation |  |  |  |
Vesting period | 3 years |  |  |
Management Stock Purchase Plan | Restricted stock units (RSUs) | Maximum |  |  |  |
Stock-based compensation |  |  |  |
Vesting period | 3 years |  |  |
Management Stock Purchase Plan | Restricted stock units (RSUs) | Class A |  |  |  |
Stock-based compensation |  |  |  |
Number of common shares for each unit of award held | 1 |  |  |
Exercise price as percentage of fair market value of common stock on grant date | 67.00% |  |  |

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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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