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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended
--- | ---
Apr. 02, 2017 | Apr. 03, 2016
Revenues: |  |  |
Products |  | $ 373,204 | $ 358,139
Services |  | 83,709 | 72,855
Total revenues |  | 456,913 | 430,994
Cost of revenues: |  |  |
Cost of products |  | 154,966 | 167,555
Cost of services |  | 37,014 | 33,107
Total cost of revenues (exclusive of acquired intangible assets amortization shown separately below) |  | 191,980 | 200,662
Gross profit |  | 264,933 | 230,332
Operating expenses: |  |  |
Engineering and development |  | 76,182 | 73,464
Selling and administrative |  | 84,906 | 79,174
Acquired intangible assets amortization |  | 7,952 | 19,994
Restructuring and other |  | 2,511 | 1,587
Total operating expenses |  | 171,551 | 174,219
Income from operations |  | 93,382 | 56,113
Non-operating (income) expense: |  |  |
Interest income |  | (3,520) | (1,642)
Interest expense |  | 5,402 | 710
Other (income) expense, net |  | (516) | (147)
Income before income taxes | [1],[2] | 92,016 | 57,192
Income tax provision |  | 6,795 | 7,206
Net income |  | $ 85,221 | $ 49,986
Net income per common share: |  |  |
Basic |  | $ 0.43 | $ 0.24
Diluted |  | $ 0.42 | $ 0.24
Weighted average common shares-basic |  | 200,005 | 204,271
Weighted average common shares-diluted |  | 201,936 | 205,732
Cash dividend declared per common share |  | $ 0.07 | $ 0.06
[1] | Included in the income (loss) before income taxes for each of the segments are charges and credits related to inventory and other.
[2] | Interest income, interest expense, contingent consideration adjustments, pension and post retirement plans actuarial gains and other income (expense) are included in Corporate and Eliminations.

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