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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Jan. 02, 2021 | Dec. 28, 2019 | Dec. 29, 2018
Income Statement [Abstract] |  |  |
Revenues | $ 508,373 | $ 451,370 | $ 417,648
Costs of services (exclusive of depreciation and amortization) | 370,709 | 317,761 | 289,185
Selling, general and administrative expenses | 90,028 | 93,613 | 89,533
Depreciation and amortization | 12,840 | 10,648 | 9,995
Income from operations | 34,796 | 29,348 | 28,935
GNU gain on liquidation | 0 | 0 | 258
Interest expense, net | (1,216) | (1,254) | (647)
Foreign currency gains (losses), net | 42 | (1,297) | 387
Income before provision for income taxes | 33,622 | 26,797 | 28,933
Provision for income taxes | 9,115 | 6,050 | 6,461
Net income | 24,507 | 20,747 | 22,472
Net loss attributable to noncontrolling interest, net of tax | 0 | 0 | 20
Net income attributable to CRA International, Inc. | $ 24,507 | $ 20,747 | $ 22,492
Net income per share attributable to CRA International, Inc.: |  |  |
Basic (in dollars per share) | $ 3.14 | $ 2.63 | $ 2.76
Diluted (in dollars per share) | $ 3.07 | $ 2.53 | $ 2.61
Weighted average number of shares outstanding: |  |  |
Basic (in shares) | 7,768 | 7,866 | 8,107
Diluted (in shares) | 7,948 | 8,167 | 8,570

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