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Summary of Significant Accounting Policies - Schedule of Impact of Adoption of Topic 606 (Details) - USD ($) | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Jan. 02, 2018 | Dec. 31, 2017
Disposal/transportation accrual | $ 1,449,000 |  | $ 1,449,000 |  | $ 1,616,000 | $ 2,071,000
Deferred revenue | 4,472,000 |  | 4,472,000 |  | 5,083,000 | 4,311,000
Accumulated deficit | (77,465,000) |  | (77,465,000) |  | $ (78,210,000) | $ (77,893,000)
Revenues | 13,160,000 | $ 12,715,000 | 25,817,000 | $ 25,422,000 |  |
Cost of goods sold | 11,117,000 | 10,361,000 | 20,454,000 | 20,349,000 |  |
Income from continuing operations, net of taxes | 788,000 | (1,226,000) | 1,040,000 | (1,901,000) |  |
Net income attributable to Perma-Fix Environmental Services, Inc. common stockholders | $ 610,000 | $ (1,169,000) | $ 745,000 | $ (1,896,000) |  |
Net income attributable to Perma-Fix Environmental Services, Inc. common stockholders - basic and diluted: Continuing operations | $ 0.07 | $ (0.09) | $ 0.09 | $ (.14) |  |
Net income attributable to Perma-Fix Environmental Services, Inc. common stockholders - basic and diluted: Net income (loss) per common share | $ 0.05 | $ (0.10) | $ 0.06 | $ (0.16) |  |
Net income | $ 582,000 | $ (1,386,000) | $ 677,000 | $ (2,192,000) |  |
Comprehensive income attributable to Perma-Fix Environmental Services, Inc. stockholders | 561,000 | $ (1,154,000) | 688,000 | $ (1,869,000) |  |
Effect of Change Higher/(Lower) [Member] |  |  |  |  |  |
Disposal/transportation accrual | (323,000) |  | (323,000) |  |  |
Deferred revenue | 738,000 |  | 738,000 |  |  |
Accumulated deficit | 57,000 |  | 57,000 |  |  |
Revenues | 145,000 |  | 29,000 |  |  |
Cost of goods sold | 92,000 |  | 22,000 |  |  |
Income from continuing operations, net of taxes | 53,000 |  | 7,000 |  |  |
Net income attributable to Perma-Fix Environmental Services, Inc. common stockholders | $ 53,000 |  | $ 7,000 |  |  |
Net income attributable to Perma-Fix Environmental Services, Inc. common stockholders - basic and diluted: Continuing operations |  |  |  |  |  |
Net income attributable to Perma-Fix Environmental Services, Inc. common stockholders - basic and diluted: Net income (loss) per common share |  |  |  |  |  |
Net income | $ 53,000 |  | $ 7,000 |  |  |
Comprehensive income attributable to Perma-Fix Environmental Services, Inc. stockholders | 53,000 |  | 7,000 |  |  |
Balances Before Adoption of Topic 606 [Member] |  |  |  |  |  |
Disposal/transportation accrual | 1,772,000 |  | 1,772,000 |  |  |
Deferred revenue | 3,734,000 |  | 3,734,000 |  |  |
Accumulated deficit | (77,522,000) |  | (77,522,000) |  |  |
Revenues | 13,015,000 |  | 25,788,000 |  |  |
Cost of goods sold | 11,025,000 |  | 20,432,000 |  |  |
Income from continuing operations, net of taxes | 735,000 |  | 1,033,000 |  |  |
Net income attributable to Perma-Fix Environmental Services, Inc. common stockholders | $ 557,000 |  | $ 738,000 |  |  |
Net income attributable to Perma-Fix Environmental Services, Inc. common stockholders - basic and diluted: Continuing operations | $ 0.07 |  | $ 0.09 |  |  |
Net income attributable to Perma-Fix Environmental Services, Inc. common stockholders - basic and diluted: Net income (loss) per common share | $ 0.05 |  | $ 0.06 |  |  |
Net income | $ 529,000 |  | $ 670,000 |  |  |
Comprehensive income attributable to Perma-Fix Environmental Services, Inc. stockholders | $ 508,000 |  | $ 681,000 |  |  |

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