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CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 01, 2019 | Oct. 02, 2018 | Oct. 01, 2019 | Oct. 02, 2018
CONDENSED CONSOLIDATED STATEMENTS OF INCOME |  |  |  |
Revenues | $ 586,536 | $ 575,160 | $ 1,788,662 | $ 1,747,176
Costs and expenses: |  |  |  |
Cost of sales | 132,941 | 132,168 | 403,566 | 398,059
Labor expenses | 213,600 | 203,449 | 648,831 | 624,432
Other operating costs and expenses | 149,397 | 140,975 | 451,724 | 426,466
General and administrative expenses | 39,746 | 37,469 | 116,116 | 118,166
Depreciation and amortization expenses | 21,342 | 24,090 | 64,363 | 71,819
Impairment of assets and lease terminations |  | 263 |  | 2,846
Preopening costs | 2,546 | 3,251 | 6,851 | 5,799
Total costs and expenses | 559,572 | 541,665 | 1,691,451 | 1,647,587
Income from operations | 26,964 | 33,495 | 97,211 | 99,589
Loss on investment in unconsolidated affiliates | (10,345) | (1,558) | (13,439) | (2,686)
Interest and other income/(expense), net | 6 | (1,732) | (17) | (5,018)
Income before income taxes | 16,625 | 30,205 | 83,755 | 91,885
Income tax provision | 535 | 1,730 | 5,171 | 9,028
Net income | $ 16,090 | $ 28,475 | $ 78,584 | $ 82,857
Net income per share: |  |  |  |
Basic (in dollars per share) | $ 0.37 | $ 0.63 | $ 1.78 | $ 1.82
Diluted (in dollars per share) | $ 0.36 | $ 0.61 | $ 1.76 | $ 1.79
Weighted average shares outstanding: |  |  |  |
Basic (in shares) | 43,682 | 45,321 | 44,034 | 45,418
Diluted (in shares) | 44,186 | 46,368 | 44,643 | 46,400

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