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Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Jan. 03, 2016 | Dec. 28, 2014 | Dec. 29, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Plan activity adjustment period | 5 years |  |
Number of shares available for grant (in shares) | 2,738,086 |  |
Tax benefit | $ 3.0 | $ 2.9 | $ 2.3
Award vesting period | 3 years |  |
Term to exercise stock option before expiration (not more than) | 10 years |  |
Grants in period (in shares) | 0 | 0 | 0
Outstanding (in shares) | 12,000 | 33,000 |
Unrecognized compensation cost, unvested stock options | $ 0.0 |  |
Exercises in period (in shares) | 0 | 0 | 0
Windfall |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Excess tax benefit from share-based compensation, financing activities | $ 0.2 | $ 0.4 | $ 0.5
Non-Employee Director |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Outstanding (in shares) | 12,000 |  |
Performance Shares |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Compensation cost not yet recognized, period for recognition | 2 years |  |
Granted (in shares) | 375,000 |  |
Maximum target percentage allowed under grant | 200.00% |  |
Performance Shares, Financial Goals |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Unrecognized compensation cost, unvested restricted stock | $ 3.3 |  |
Weighted average grant date fair value (in dollars per share) | $ 16.31 |  |
Total nonvested shares (in shares) | 287,896 |  |
Granted (in shares) | 250,000 |  |
Maximum target percentage allowed under grant | 200.00% |  |
Performance measurement period | 1 year |  |
Additional requisite service period | 2 years |  |
Actual percentage achieved | 115.00% |  |
Actual shares achieved | 287,896 |  |
Performance Shares, Total Shareholder Return |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Unrecognized compensation cost, unvested restricted stock | $ 1.4 |  |
Granted (in shares) | 125,000 |  |
Maximum target percentage allowed under grant | 200.00% |  |
Performance measurement period | 3 years |  |
Performance Shares, Total Shareholder Return | Monte Carlo Fair Value |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Weighted average grant date fair value (in dollars per share) | $ 16.01 |  |
Restricted Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Unrecognized compensation cost, unvested restricted stock | $ 12.0 |  |
Compensation cost not yet recognized, period for recognition | 2 years |  |
Weighted average grant date fair value (in dollars per share) | $ 16.30 | $ 16.47 |
Grants in period (in dollars per share) | $ 15.85 | $ 15.63 | $ 19.74
Vested in period, fair value | $ 5.4 | $ 7.1 | $ 6.5
Total nonvested shares (in shares) | 885,882 | 1,192,550 |
Granted (in shares) | 320,357 |  |
Award vesting period | 4 years |  |
Stock-based compensation cost |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock-based compensation cost | $ 7.9 | $ 7.6 | $ 6.0
Class A common stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Maximum number of shares available for grants | 15.00% |  |
Maximum shares eligible to earn [Member] | Performance Shares |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Granted (in shares) | 750,000 |  |
Maximum shares eligible to earn [Member] | Performance Shares, Total Shareholder Return |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total nonvested shares (in shares) | 250,000 |  |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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