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SEGMENT REPORTING (Details) (USD $) | 3 Months Ended | 12 Months Ended
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Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 Segment | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
SEGMENT REPORTING [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of reporting segments |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |
Financial information of our reporting segments [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from external customers |  |  |  |  |  |  |  |  |  |  | $ 127,509,000 | [1] | $ 118,097,000 | [1] | $ 97,790,000 | [1] |
Intercompany revenues |  |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |
Gross profit | 3,279,000 |  | 4,226,000 | 3,930,000 | 4,369,000 | 6,040,000 |  | 11,301,000 | 8,049,000 | 3,030,000 | 15,804,000 |  | 28,420,000 | [2] | 20,615,000 |  |
Interest income |  |  |  |  |  |  |  |  |  |  | 41,000 |  | 58,000 |  | 65,000 |  |
Interest expense |  |  |  |  |  |  |  |  |  |  | 818,000 |  | 657,000 |  | 755,000 |  |
Interest expense-financing fees |  |  |  |  |  |  |  |  |  |  | 107,000 |  | 207,000 |  | 412,000 |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 5,470,000 |  | 4,816,000 | [2] | 4,530,000 |  |
Segment profit (loss) | (861,000) |  | (472,000) | (1,009,000) | (807,000) | (41,000) |  | 4,421,000 | 2,552,000 | (533,000) | (3,149,000) |  | 6,399,000 | [2] | 4,882,000 |  |
Segment assets | 139,691,000 |  |  |  |  | 163,654,000 |  |  |  |  | 139,691,000 |  | 163,654,000 |  | 125,737,000 |  |
Expenditures for segment assets |  |  |  |  |  |  |  |  |  |  | 412,000 |  | 2,303,000 |  | 1,642,000 |  |
Total debt | 14,196,000 |  |  |  |  | 17,716,000 |  |  |  |  | 14,196,000 |  | 17,716,000 |  | 10,249,000 |  |
Debt discount | 0 |  |  |  |  | (12,000) |  |  |  |  | 0 |  | (12,000) |  | (117,000) |  |
Number of warrants issued for promissory note (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2
Number of common shares issued for promissory note (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 40,000
Promissory note issued |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,000,000
CH Plateau Remediation Company [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from major customer |  |  |  |  |  |  |  |  |  |  | 24,652,000 |  | 59,136,000 |  | 51,929,000 |  |
Percentage of revenue from major customer (in hundredths) |  |  |  |  |  |  |  |  |  |  | 19.30% |  | 49.90% |  | 53.10% |  |
U.S. Department of Energy [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from major customer |  |  |  |  |  |  |  |  |  |  | 26,265,000 |  | 4,136,000 |  | 0 |  |
Percentage of revenue from major customer (in hundredths) |  |  |  |  |  |  |  |  |  |  | 20.60% |  | 3.50% |  | 0.00% |  |
Treatment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial information of our reporting segments [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from external customers |  |  |  |  |  |  |  |  |  |  | 45,882,000 |  | 65,836,000 |  | 53,363,000 |  |
Intercompany revenues |  |  |  |  |  |  |  |  |  |  | 1,785,000 |  | 1,928,000 |  | 2,962,000 |  |
Gross profit |  |  |  |  |  |  |  |  |  |  | 9,268,000 |  | 21,299,000 |  | 12,733,000 |  |
Interest income |  |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |
Interest expense |  |  |  |  |  |  |  |  |  |  | 9,000 |  | 72,000 |  | 138,000 |  |
Interest expense-financing fees |  |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 3,000 |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 4,448,000 |  | 4,535,000 |  | 4,469,000 |  |
Segment profit (loss) |  |  |  |  |  |  |  |  |  |  | 2,951,000 |  | 10,226,000 |  | 7,715,000 |  |
Segment assets | 75,405,000 |  |  |  |  | 81,197,000 |  |  |  |  | 75,405,000 |  | 81,197,000 |  | 91,881,000 |  |
Expenditures for segment assets |  |  |  |  |  |  |  |  |  |  | 263,000 |  | 2,278,000 |  | 1,601,000 |  |
Total debt | 85,000 |  |  |  |  | 142,000 |  |  |  |  | 85,000 |  | 142,000 |  | 1,105,000 |  |
Services [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial information of our reporting segments [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from external customers |  |  |  |  |  |  |  |  |  |  | 81,627,000 |  | 52,261,000 |  | 44,427,000 |  |
Intercompany revenues |  |  |  |  |  |  |  |  |  |  | 845,000 |  | 585,000 |  | 502,000 |  |
Gross profit |  |  |  |  |  |  |  |  |  |  | 6,536,000 |  | 7,121,000 |  | 7,882,000 |  |
Interest income |  |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |
Interest expense |  |  |  |  |  |  |  |  |  |  | 12,000 |  | 7,000 |  | 3,000 |  |
Interest expense-financing fees |  |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 949,000 |  | 192,000 |  | 39,000 |  |
Segment profit (loss) |  |  |  |  |  |  |  |  |  |  | 1,474,000 |  | 3,983,000 |  | 4,508,000 |  |
Segment assets | 36,120,000 |  |  |  |  | 43,293,000 |  |  |  |  | 36,120,000 |  | 43,293,000 |  | 2,570,000 |  |
Expenditures for segment assets |  |  |  |  |  |  |  |  |  |  | 145,000 |  | 4,000 |  | 19,000 |  |
Total debt | 5,000 |  |  |  |  | 12,000 |  |  |  |  | 5,000 |  | 12,000 |  | 18,000 |  |
Segments Total [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial information of our reporting segments [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from external customers |  |  |  |  |  |  |  |  |  |  | 127,509,000 |  | 118,097,000 |  | 97,790,000 |  |
Intercompany revenues |  |  |  |  |  |  |  |  |  |  | 2,630,000 |  | 2,513,000 |  | 3,464,000 |  |
Gross profit |  |  |  |  |  |  |  |  |  |  | 15,804,000 |  | 28,420,000 |  | 20,615,000 |  |
Interest income |  |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |
Interest expense |  |  |  |  |  |  |  |  |  |  | 21,000 |  | 79,000 |  | 141,000 |  |
Interest expense-financing fees |  |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 3,000 |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 5,397,000 |  | 4,727,000 |  | 4,508,000 |  |
Segment profit (loss) |  |  |  |  |  |  |  |  |  |  | 4,425,000 |  | 14,209,000 |  | 12,223,000 |  |
Segment assets | 111,525,000 |  |  |  |  | 124,490,000 |  |  |  |  | 111,525,000 |  | 124,490,000 |  | 94,451,000 |  |
Expenditures for segment assets |  |  |  |  |  |  |  |  |  |  | 408,000 |  | 2,282,000 |  | 1,620,000 |  |
Total debt | 90,000 |  |  |  |  | 154,000 |  |  |  |  | 90,000 |  | 154,000 |  | 1,123,000 |  |
Corporate And Other [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial information of our reporting segments [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from external customers |  |  |  |  |  |  |  |  |  |  | 0 | [3] | 0 | [3] | 0 | [3] |
Intercompany revenues |  |  |  |  |  |  |  |  |  |  | 0 | [3] | 0 | [3] | 0 | [3] |
Gross profit |  |  |  |  |  |  |  |  |  |  | 0 | [3] | 0 | [3] | 0 | [3] |
Interest income |  |  |  |  |  |  |  |  |  |  | 41,000 | [3] | 58,000 | [3] | 65,000 | [3] |
Interest expense |  |  |  |  |  |  |  |  |  |  | 797,000 | [3] | 578,000 | [3] | 614,000 | [3] |
Interest expense-financing fees |  |  |  |  |  |  |  |  |  |  | 107,000 | [3] | 207,000 | [3] | 409,000 | [3] |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 73,000 | [3] | 89,000 | [3] | 22,000 | [3] |
Segment profit (loss) |  |  |  |  |  |  |  |  |  |  | (7,574,000) | [3] | (7,810,000) | [3] | (7,341,000) | [3] |
Segment assets | 28,166,000 | [3],[4] |  |  |  | 39,164,000 | [3],[4] |  |  |  | 28,166,000 | [3],[4] | 39,164,000 | [3],[4] | 31,286,000 | [3],[4] |
Expenditures for segment assets |  |  |  |  |  |  |  |  |  |  | 4,000 | [3] | 21,000 | [3] | 22,000 | [3] |
Total debt | 14,106,000 | [3],[5] |  |  |  | 17,562,000 | [3],[5] |  |  |  | 14,106,000 | [3],[5] | 17,562,000 | [3],[5] | 9,126,000 | [3],[5] |
Segment discontinued operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial information of our reporting segments [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment assets | $ 2,113,000 |  |  |  |  | $ 2,343,000 |  |  |  |  | $ 2,113,000 |  | $ 2,343,000 |  | $ 7,433,000 |  |
[1] | The consolidated revenues included the CH Plateau Remediation Company ("CHPRC") revenue of $24,652,000 or 19.3%, $59,136,000 or 50.1%, and $51,929,000 or 53.1%, for 2012, 2011, and 2010, respectively, of our total consolidated revenue from continuing operations. Also, the consolidated revenues included revenues generated directly from the U.S. Department of Energy ("DOE") of $26,265,000 or 20.6%, $4,136,000 or 3.5%, and $0 or 0%, for 2012, 2011, and 2010, respectively, of our total consolidated revenue from continuing operations. The increase in revenues generated directly from the DOE was attributed to the acquisition of SEC on October 31, 2011.
[2] | As presented in the accompanying consolidated financial statements contained herein within this Form 10-K/A – Amendment No. 1.
[3] | Amounts reflect the activity for corporate headquarters, not included in the segment information.
[4] | Amount includes assets from our discontinued operations of $2,113,000, $2,343,000, and $7,433,000, as of December 31, 2012, 2011, and 2010, respectively.
[5] | Net of debt discount of ($0), ($12,000), and (117,000) for 2012 2011, and 2010, respectively, based on the estimated fair value at issuance of two Warrants and 40,000 shares of the Company's Common Stock issued on May 8, 2009 in connection with a $3,000,000 promissory note entered into by the Company and Mr. William Lampson and Mr. Diehl Rettig. The promissory note and the Warrants were modified on April 18, 2011. See Note 9 – "Long-Term Debt – Promissory Note and Installment Agreement" for additional information."

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