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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2012
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract] |
Customers accounting for 10% or more of total revenues generated from continuing operations | The following customers accounted for 10% or more of the total revenues generated from continuing operations for twelve months ended December 31, 2012, 2011, and 2010:
|  |  |  |  | Total |  |  | % of Total |
Customer |  | Year |  |  | Revenue |  |  | Revenue |
CH Plateau Remediation Company ("CHPRC") |  |  | 2012 |  |  | $ | 24,652,000 |  |  |  | 19.3 | %
|  |  | 2011 |  |  | $ | 59,136,000 |  |  |  | 50.1 | %
|  |  | 2010 |  |  | $ | 51,929,000 |  |  |  | 53.1 | %
Department of Energy ("DOE") |  |  | 2012 |  |  | $ | 26,265,000 |  |  |  | 20.6 | %
|  |  | 2011 |  |  | $ | 4,136,000 |  |  |  | 3.5 | %
|  |  | 2010 |  |  | $ | 0 |  |  |  | 0.0 | %
Receivable balance for each customer representing more than 10% of consolidated receivable | The outstanding receivable balance for each customer representing more than 10% of consolidated accounts receivable is ("AR") as follows:
|  |  |  |  | Total |  |  | % of Total |
Customer |  | Year |  |  | AR |  |  | AR |
DOE |  |  | 2012 |  |  | $ | 1,753,000 |  |  |  | 15.4 | %
|  |  | 2011 |  |  | $ | 2,656,000 |  |  |  | 15.8 | %
Clauss Construction |  |  | 2012 |  |  | $ | 3,343,000 |  |  |  | 29.3 | %
|  |  | 2011 |  |  | $ | 3,114,000 |  |  |  | 18.5 | %
Reconciliation of basic net income (loss) per share to diluted net (loss) income per share | The following is a reconciliation of basic net (loss) income per share to diluted net (loss) income per share for the years ended December 31, 2012, 2011, and 2010:
|  | (Restated) |  |  | (Restated) |  |  | (Restated) |
(Amounts in Thousands, Except for Per Share Amounts) |  | 2012 |  |  | 2011 |  |  | 2010 |
(Loss) income per share from continuing operations attributable to Perma-Fix Environmental Services, Inc. common stockholders |  |  |  |  |  |  |  |  |
(Loss) income from continuing operations |  | $ | (3,329 | ) |  | $ | 6,377 |  |  | $ | 4,882 |
Basic (loss) income per share |  | $ | (.30 | ) |  | $ | .58 |  |  | $ | .44 |
Diluted (loss) income per share |  | $ | (.30 | ) |  | $ | .58 |  |  | $ | .44 |
Income (loss) per share from discontinued operations attributable to Perma-Fix Environmental Services, Inc. common stockholders |  |  |  |  |  |  |  |  |  |  |  |
(loss) Income from discontinued operations |  | $ | (30 | ) |  | $ | 182 |  |  | $ | (919 | )
Basic income (loss) per share |  | $ | ¾ |  |  | $ | .01 |  |  | $ | (.08 | )
Diluted income (loss) per share |  | $ | ¾ |  |  | $ | .01 |  |  | $ | (.08 | )
Income per share from disposal of discontinued operations attributable to Perma-Fix Environmental Services, Inc. common stockholders |  |  |  |  |  |  |  |  |  |  |  |
Gain on disposal of discontinued operations |  | $ | ¾ |  |  | $ | 1,509 |  |  | $ | ¾ |
Basic income per share |  | $ | ¾ |  |  | $ | .14 |  |  | $ | ¾ |
Diluted income per share |  | $ | ¾ |  |  | $ | .14 |  |  | $ | ¾ |
Weighted average common shares outstanding – basic |  |  | 11,225 |  |  |  | 11,059 |  |  |  | 10,989 |
Potential shares exercisable under stock option plans |  |  | ¾ |  |  |  | 4 |  |  |  | 11 |
Potential shares upon exercise of warrants |  |  | ¾ |  |  |  | ¾ |  |  |  | 5 |
Weighted average common shares outstanding – diluted |  |  | 11,225 |  |  |  | 11,063 |  |  |  | 11,006 |
Potential shares excluded from above weighted average share calculations due to their anti-dilutive effect |
Potential shares excluded from above weighted average share calculations due to their anti-dilutive effect include: |  |  |  |  |  |  |  |  |  |  |  |
Upon exercise of options |  |  | 517 |  |  |  | 510 |  |  |  | 439 |
Upon exercise of Warrants |  |  | ¾ |  |  |  | 30 |  |  |  | ¾ |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + 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 (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph c -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. + Details
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- Definition Tabular disclosure of the reconciliation of basic net earnings per share (or unit) to diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 39 + Details
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- Definition Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6327-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13531-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13537-108611 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6442-108592 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 94-6 -Paragraph 21, 22, 23, 24, 25 -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. + Details
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