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Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Net revenues | $ 14,809,000 | $ 16,354,000 | $ 24,847,000 | $ 29,955,000
Cost of goods sold | 12,993,000 | 12,322,000 | 22,997,000 | 24,445,000
Gross profit | 1,816,000 | 4,032,000 | 1,850,000 | 5,510,000
Selling, general and administrative expenses | 2,375,000 | 2,930,000 | 5,431,000 | 5,776,000
Research and development | 554,000 | 489,000 | 1,128,000 | 918,000
(Gain) loss on disposal of property and equipment | (1,000) |  | 4,000 |
Impairment loss on tangible assets | 1,816,000 |  | 1,816,000 |
Impairment loss on intangible assets | 8,288,000 |  | 8,288,000 |
(Loss) income from operations | (11,216,000) | 613,000 | (14,817,000) | (1,184,000)
Other income (expense): |  |  |  |
Interest income | 31,000 | 11,000 | 47,000 | 20,000
Interest expense | (108,000) | (140,000) | (276,000) | (267,000)
Interest expense-financing fees | (29,000) | (56,000) | (85,000) | (115,000)
Foreign currency gain |  |  |  | (4,000)
Other | 21,000 | 15,000 | 21,000 | 15,000
(Loss) income from continuing operations before taxes | (11,301,000) | 443,000 | (15,110,000) | (1,535,000)
Income tax (benefit) expense | (3,167,000) | 36,000 | (3,130,000) | 71,000
(Loss) income from continuing operations, net of taxes | (8,134,000) | 407,000 | (11,980,000) | (1,606,000)
Loss from discontinued operations, net of taxes | (264,000) | (713,000) | (431,000) | (936,000)
Net loss | (8,398,000) | (306,000) | (12,411,000) | (2,542,000)
Net loss attributable to non-controlling interest | (164,000) | (152,000) | (337,000) | (324,000)
Net loss attributable to Perma-Fix Environmental Services, Inc. common stockholders | $ (8,234,000) | $ (154,000) | $ (12,074,000) | $ (2,218,000)
Net (loss) income per common share attributable to Perma-Fix Environmental Services, Inc. stockholders - basic and diluted: |  |  |  |
Continuing operations (in dollars per share) | $ (0.69) | $ 0.05 | $ (1) | $ (0.11)
Discontinued operations (in dollars per share) | (0.02) | (0.06) | (0.04) | (0.08)
Net loss per common share (in dollars per share) | $ (0.71) | $ (0.01) | $ (1.04) | $ (0.19)
Number of common shares used in computing net income (loss) per share: |  |  |  |
Basic (in shares) | 11,574 | 11,505 | 11,566 | 11,496
Diluted (in shares) | 11,574 | 11,536 | 11,566 | 11,496

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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1448-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Weighted-Average Number of Common Shares Outstanding -URI http://asc.fasb.org/extlink&oid=6528421 + Details
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