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Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Apr. 01, 2017
Revenue: |  |  |
Systems |  | $ 93,291 | $ 91,605
Services |  | 6,112 | 25,913
Total revenue |  | 99,403 | 117,518
Cost of revenue: |  |  |
Systems | [1] | 51,633 | 57,373
Services | [1] | 5,711 | 25,768
Total cost of revenue |  | 57,344 | 83,141
Gross profit |  | 42,059 | 34,377
Operating expenses: |  |  |
Research and development | [1] | 25,536 | 33,808
Sales and marketing | [1] | 19,901 | 22,429
General and administrative | [1] | 9,095 | 10,257
Gain on sale of product line |  | (6,704) | 0
Restructuring charges |  | 5,340 | 699
Total operating expenses |  | 53,168 | 67,193
Loss from operations |  | (11,109) | (32,816)
Interest and other income (expense), net: |  |  |
Interest income (expense), net |  | (223) | 44
Other income (expense), net |  | (294) | 120
Total interest and other income (expense), net |  | (517) | 164
Loss before provision for income taxes |  | (11,626) | (32,652)
Provision for income taxes |  | 110 | 673
Net loss |  | $ (11,736) | $ (33,325)
Net loss per common share: |  |  |
Basic and diluted (in dollars per share) |  | $ (0.23) | $ (0.67)
Weighted-average number of shares used to compute net loss per common share: |  |  |
Basic and diluted (in shares) |  | 51,611 | 49,525
Other comprehensive loss, net of tax: |  |  |
Unrealized gains (losses) on available-for-sale marketable securities, net |  | $ 0 | $ (4)
Foreign currency translation adjustments, net |  | 279 | 61
Total other comprehensive income, net of tax |  | 279 | 57
Comprehensive loss |  | $ (11,457) | $ (33,268)
[1] | Includes stock-based compensation as follows: Three and Nine Months Ended March 31, 2018 and April 1, 2017; Cost of revenue: Products - $112, $116, $349, $338 ; Services - $77, $56, $200, $146; Research and development - $983, $1,326, $3,663, $3,719; Sales and marketing - $850, $1,111, $2,581, $3,323; General administrative - $735, $931, $2,521, $2,840;

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