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Quarterly Financial Data (unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 29, 2015 | Sep. 29, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 30, 2014 | Sep. 30, 2014 | Jul. 01, 2014 | Apr. 01, 2014 | Dec. 29, 2015 | Dec. 30, 2014 | Dec. 31, 2013
Quarterly Financial Data (unaudited) |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 526,841 | $ 526,688 | $ 529,107 | $ 517,973 | $ 499,673 | $ 499,114 | $ 496,406 | $ 481,431 | $ 2,100,609 | $ 1,976,624 | $ 1,877,910
Income/(loss) from operations | 38,795 | 35,644 | 49,753 | 41,054 | 34,792 | 34,175 | 42,691 | 33,073 | 165,246 | 144,731 | 160,954
Net income | $ 27,200 | $ 26,176 | $ 34,724 | $ 28,423 | $ 24,486 | $ 24,223 | $ 30,049 | $ 22,518 | $ 116,523 | $ 101,276 | $ 114,356
Basic net income per share (in dollars per share) | $ 0.56 | $ 0.54 | $ 0.72 | $ 0.58 | $ 0.50 | $ 0.49 | $ 0.61 | $ 0.44 | $ 2.39 | $ 2.04 | $ 2.19
Diluted net income per share (in dollars per share) | 0.54 | 0.52 | 0.69 | 0.56 | 0.48 | 0.48 | 0.59 | 0.43 | 2.30 | 1.96 | 2.10
Cash dividends declared per common share (in dollars per share) | $ 0.20 | $ 0.20 | $ 0.165 | $ 0.165 | $ 0.165 | $ 0.165 | $ 0.14 | $ 0.14 | $ 0.73 | $ 0.61 | $ 0.52

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