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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended
--- | ---
Apr. 03, 2020 | Mar. 29, 2019
Income Statement [Abstract] |  |  |  |
Revenue | $ 155,468 |  | $ 157,186 |
Cost of revenue | 91,023 |  | 90,897 |
Gross profit | 64,445 |  | 66,289 |
Operating expenses: |  |  |  |
Research and development and engineering | 15,334 |  | 13,997 |
Selling, general and administrative | 30,755 |  | 31,847 |
Amortization of purchased intangible assets | 3,445 |  | 3,998 |
Restructuring and acquisition related costs | 1,661 |  | 2,054 |
Total operating expenses | 51,195 |  | 51,896 |
Operating income | 13,250 |  | 14,393 |
Interest income (expense), net | (1,678) |  | (2,044) |
Foreign exchange transaction gains (losses), net | 254 |  | 41 |
Other income (expense), net | 83 |  | (68) |
Income before income taxes | 11,909 |  | 12,322 |
Income tax provision (benefit) | (38) |  | 69 |
Consolidated net income | $ 11,947 | [1] | $ 12,253 | [2]
Earnings per common share (Note 5): |  |  |  |
Basic | $ 0.34 | [1] | $ 0.35 | [2]
Diluted | $ 0.34 | [1] | $ 0.35 | [2]
Weighted average common shares outstanding—basic | 35,152 | [1] | 34,958 | [2]
Weighted average common shares outstanding—diluted | 35,561 | [1] | 35,474 | [2]
[1] | 71,166 non-GAAP EPS performance-based restricted stock units granted to certain members of the executive management team and 213,219 shares of restricted stock issued to the former Laser Quantum non-controlling interest shareholders are considered contingently issuable shares and were excluded from the calculation of the denominator as the contingent conditions had not been met as of April 3, 2020.
[2] | 45,252 non-GAAP EPS performance-based restricted stock units granted to certain members of the executive management team and 213,219 shares of restricted stock issued to the former Laser Quantum non-controlling interest shareholders were considered contingently issuable shares and were excluded from the calculation of the denominator as the contingent conditions had not been met as of March 29, 2019.

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- Definition This element represents (i) restructuring charges, which are amounts charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a program that is planned and controlled by management, and materially changes either the scope of a business undertaken by an entity, or the manner in which that business is conducted; and (ii) acquisition-related costs, which are costs incurred to effect a business combination which costs have been expensed during the period. Such costs can include transaction costs such as banking, legal, accounting and other costs directly related to effect a business combination as well as external, incremental costs of integration planning that are directly related to a business combination, including costs associated with preparing for systems and other integration activities. + References No definition available. + Details
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