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QUARTERLY OPERATING RESULTS (UNAUDITED) (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012
Unaudited quarterly operating results are summarized as follows: |  |  |  |  |  |  |  |  |  |
Net revenues | $ 12,728,000 | $ 19,072,000 | $ 22,784,000 | $ 19,829,000 | $ 26,684,000 | $ 29,190,000 | $ 33,698,000 | $ 37,936,000 | $ 74,413,000 | $ 127,509,000
Gross profit | 2,127,000 | 3,129,000 | 4,023,000 | 537,000 | 3,279,000 | 4,226,000 | 3,930,000 | 4,369,000 | 9,816,000 | 15,804,000
(Loss) income from continuing operations | (30,035,000) | (568,000) | (980,000) | (2,888,000) | (861,000) | (472,000) | (1,009,000) | (807,000) | (34,471,000) | (3,149,000)
(Loss) income from discontinued operations, net of taxes | (1,344,000) | (240,000) | 43,000 | (27,000) | 229,000 | (61,000) | (60,000) | (138,000) | (1,568,000) | (30,000)
Net loss | (31,379,000) | (808,000) | (937,000) | (2,915,000) | (632,000) | (533,000) | (1,069,000) | (945,000) | (36,039,000) | (3,179,000)
Net (loss) income attributable to noncontrolling interest | 0 | 0 | (61,000) | (3,000) | 1,000 | 21,000 | 102,000 | 56,000 | (64,000) | 180,000
Net (loss) income attributable to Perma-Fix Environmental Services, Inc., common stockholders | (31,379,000) | (808,000) | (876,000) | (2,912,000) | (633,000) | (554,000) | (1,171,000) | (1,001,000) | (35,975,000) | (3,359,000)
Basic and diluted net (loss) income per common share attributable to Perma-Fix Environmental Services, Inc. stockholders: |  |  |  |  |  |  |  |  |  |
Continuing operations (in dollars per share) | $ (2.63) | $ (0.05) | $ (0.08) | $ (0.26) | $ (0.08) | $ (0.04) | $ (0.10) | $ (0.08) | $ (3.04) | $ (0.30)
Discontinued operations (in dollars per share) | $ (0.12) | $ (0.02) | $ 0 | $ 0 | $ 0.02 | $ (0.01) | $ 0 | $ (0.01) | $ (0.14) | $ 0
Net loss per common share (in dollars per share) | $ (2.75) | $ (0.07) | $ (0.08) | $ (0.26) | $ (0.06) | $ (0.05) | $ (0.10) | $ (0.09) | $ (3.18) | $ (0.30)
Impairment charge of goodwill | 26,707,000 |  | 1,149,000 |  |  |  |  |  | (27,856,000) |
Tax expense | 4,760,000 |  |  |  |  |  |  |  | (625,000) | (2,151,000)
Tax expense within continuing operations | 3,596,000 |  |  |  |  |  |  |  | (625,000) | (2,151,000)
Tax expense within discontinued operations | $ 1,164,000 |  |  |  |  |  |  |  | $ 1,164,000 |

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: 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) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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