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CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Revenues: |  |  |
Projects | $ 11,368 | $ 11,235 | $ 8,807
Smart grid distribution products and services | 7,119 | 2,382 | 0
Other | 441 | 627 | 412
Revenues | 18,928 | 14,244 | 9,219
Cost of sales: |  |  |
Projects | 7,886 | 6,646 | 4,946
Smart grid distribution products and services | 3,792 | 1,210 | 0
Other | 337 | 344 | 318
Cost of sales | 12,015 | 8,200 | 5,264
Gross profit | 6,913 | 6,044 | 3,955
Operating expenses: |  |  |
Research and development expenses, net | 2,995 | 965 | 457
Selling, general and administrative expenses | 11,952 | 10,440 | 5,702
Total operating expenses | 14,947 | 12,571 | 6,240
Operating loss | (8,034) | (6,527) | (2,285)
Gain on investment in GridSense | 0 | 1,327 | 0
Distribution from EnerTech | 0 | 135 | 0
Gain on sale of HangXing | 492 | 0 | 0
Income tax (expense) benefit | (12,767) | 671 | (719)
Net income (loss) from continuing operations | 5,199 | (7,781) | (100)
Loss from discontinued operations | (1,948) | (17,969) | (6,076)
Gain on the sale of discontinued operations, net of income taxes | 31,069 | 0 | 0
Non-controlling interest share of loss from discontinued operations | (540) | (67) | (626)
Net income (loss) | 34,860 | (25,683) | (5,550)
Income (loss) from operations of the Company and its consolidated subsidiaries | 5,199 | (7,781) | (234)
Net loss attributable to non-controlling interests | 549 | 595 | (206)
Net income (loss) attributable to Acorn Energy, Inc. | 35,409 | (25,088) | (5,756)
Basic income (loss) per share attributable to Acorn Energy, Inc. shareholders: |  |  |
From continuing operations (in dollars per share) | $ (330) | $ (480) | $ 20
From discontinued operations (in dollars per share) | $ 1,700 | $ (1,200) | $ (480)
Net income (loss) per share attributable to Acorn Energy, Inc. shareholders (in dollars per share) | $ 2,030 | $ (1,680) | $ (500)
Weighted average number of shares outstanding attributable to Acorn Energy Inc. - basic (in shares) | 17,462 | 14,910 | 11,445
Diluted income (loss) per share attributable to Acorn Energy, Inc. shareholders: |  |  |
From continuing operations (in dollars per share) | $ 320 |  |
From discontinued operations (in dollars per share) | $ 1,670 |  |
Net income (loss) per share attributable to Acorn Energy, Inc. shareholders (in dollars per share) | $ 1,990 | $ (1,680) |
Weighted average number of shares outstanding attributable to Acorn Energy, Inc. - diluted (in shares) | 17,743 |  |
Impairments | 0 | 1,166 | 81
Gain on sale of shares in Comverge | 0 | 0 | 1,403
Gain on investment in GridSense | 0 | 1,327 | 0
Loss on sale of EnerTech | 0 | (1,821) | 0
Loss before taxes on income | (7,568) | (7,110) | (953)
Share of income of Paketeria | 0 | 0 | 263
Share of losses of GridSense | $ 0 | $ 0 | $ (129)

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- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Chapter 4 -Paragraph 5A -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 5 -Section 03 -Paragraph 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6386349&loc=d3e3636-108311 + Details
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- Definition Costs incurred in providing technology services. The services may include training, installation, engineering or consulting. Consulting services often include implementation support, software design or development, or the customization or modification of the licensed software. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 97-2 -Paragraph 63 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(d)) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 605 -Section 25 -Paragraph 76 -URI http://asc.fasb.org/extlink&oid=6753075&loc=d3e132428-111767 + Details
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- Definition Revenue from providing technology services. The services may include training, installation, engineering or consulting. Consulting services often include implementation support, software design or development, or the customization or modification of the licensed software. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 97-2 -Paragraph 63 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(d)) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 605 -Section 25 -Paragraph 76 -URI http://asc.fasb.org/extlink&oid=6753075&loc=d3e132428-111767 + Details
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