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CONSOLIDATED STATEMENTS OF INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 26, 2018 | Dec. 27, 2017 | Dec. 28, 2016
TOTAL REVENUE | $ 459,310 | $ 358,810 | $ 268,475
Shack-level operating expenses: |  |  |
Food and paper costs | 126,096 | 98,337 | 73,752
Labor and related expenses | 122,094 | 91,740 | 65,540
Other operating expenses | 51,783 | 35,805 | 24,946
Occupancy and related expenses | 32,710 | 28,197 | 21,820
General and administrative expenses | 52,720 | 39,003 | 30,556
Depreciation expense | 29,000 | 21,704 | 14,502
Pre-opening costs | 12,279 | 9,603 | 9,520
Loss on disposal of property and equipment | 917 | 608 | 34
TOTAL EXPENSES | 427,599 | 324,997 | 240,670
OPERATING INCOME | 31,711 | 33,813 | 27,805
Other income, net | 1,514 | 128,123 | 1,065
Interest expense | (2,415) | (1,643) | (374)
INCOME BEFORE INCOME TAXES | 30,810 | 160,293 | 28,496
Income tax expense | 8,862 | 151,409 | 6,350
NET INCOME | 21,948 | 8,884 | 22,146
Less: net income attributable to non-controlling interests | 6,769 | 9,204 | 9,700
Net income (loss) attributable to Shake Shack Inc. | $ 15,179 | $ (320) | $ 12,446
Earnings (loss) per share of Class A common stock |  |  |
Basic (in dollars per share) | $ 0.54 | $ (0.01) | $ 0.54
Diluted (in dollars per share) | $ 0.52 | $ (0.01) | $ 0.53
Weighted-average shares of Class A common stock outstanding |  |  |
Basic (shares) | 28,299 | 25,876 | 22,956
Diluted (shares) | 29,179 | 25,876 | 23,449
Shack sales |  |  |
TOTAL REVENUE | $ 445,589 | $ 346,388 | $ 259,350
Licensing revenue |  |  |
TOTAL REVENUE | $ 13,721 | $ 12,422 | $ 9,125

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