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Operating Segments (Details) (USD $) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2013 Segment | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012 | Dec. 31, 2012
Operating Segments [Abstract] |  |  |  |  |  |  |  |  |
Number of reporting segments | 2 |  |  |  |  |  |  |  |
Financial information of our reporting segments [Abstract] |  |  |  |  |  |  |  |  |
Revenue from external customers | $ 19,072,000 |  | $ 29,190,000 |  | $ 61,685,000 |  | $ 100,824,000 |  |
Intercompany revenues | 0 |  | 0 |  | 0 |  | 0 |  |
Gross profit | 3,129,000 |  | 4,226,000 |  | 7,690,000 |  | 12,525,000 |  |
Interest income | 8,000 |  | 10,000 |  | 27,000 |  | 31,000 |  |
Interest expense | 187,000 |  | 223,000 |  | 532,000 |  | 642,000 |  |
Interest expense - financing fees | 40,000 |  | 23,000 |  | 87,000 |  | 84,000 |  |
Depreciation and amortization | 1,267,000 |  | 1,349,000 |  | 3,843,000 |  | 4,102,000 |  |
Segment profit (loss) | (568,000) |  | (472,000) |  | (4,436,000) |  | (2,288,000) |  |
Segment assets | 135,376,000 |  |  |  | 135,376,000 |  |  |  | 139,691,000
Expenditures for segment assets | 198,000 |  | 25,000 |  | 373,000 |  | 412,000 |  |
CH Plateau Remediation Company [Member] |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |
Revenue from major customer | 6,082,000 |  | 6,036,000 |  | 18,522,000 |  | 18,669,000 |  |
Percentage of revenue from major customer (in hundredths) | 31.90% |  | 20.70% |  | 30.00% |  | 18.60% |  |
Treatment [Member] |  |  |  |  |  |  |  |  |
Financial information of our reporting segments [Abstract] |  |  |  |  |  |  |  |  |
Revenue from external customers | 8,929,000 |  | 11,405,000 |  | 26,379,000 |  | 34,284,000 |  |
Intercompany revenues | 82,000 |  | 265,000 |  | 1,149,000 |  | 1,423,000 |  |
Gross profit | 1,801,000 |  | 3,097,000 |  | 3,968,000 |  | 6,904,000 |  |
Interest income | 0 |  | 0 |  | 0 |  | 0 |  |
Interest expense | 10,000 |  | 2,000 |  | 38,000 |  | 7,000 |  |
Interest expense - financing fees | 0 |  | 0 |  | 0 |  | 0 |  |
Depreciation and amortization | 999,000 |  | 1,104,000 |  | 3,063,000 |  | 3,359,000 |  |
Segment profit (loss) | 616,000 |  | 1,352,000 |  | 524,000 |  | 2,517,000 |  |
Expenditures for segment assets | 192,000 |  | 24,000 |  | 367,000 |  | 266,000 |  |
Services [Member] |  |  |  |  |  |  |  |  |
Financial information of our reporting segments [Abstract] |  |  |  |  |  |  |  |  |
Revenue from external customers | 10,143,000 |  | 17,785,000 |  | 35,306,000 |  | 66,540,000 |  |
Intercompany revenues | 11,000 |  | 50,000 |  | 66,000 |  | 167,000 |  |
Gross profit | 1,328,000 |  | 1,129,000 |  | 3,722,000 |  | 5,621,000 |  |
Interest income | 0 |  | 0 |  | 0 |  | 0 |  |
Interest expense | 1,000 |  | 4,000 |  | (3,000) |  | 9,000 |  |
Interest expense - financing fees | 0 |  | 0 |  | 0 |  | 0 |  |
Depreciation and amortization | 248,000 |  | 226,000 |  | 708,000 |  | 688,000 |  |
Segment profit (loss) | 387,000 |  | (47,000) |  | (432,000) |  | 1,047,000 |  |
Expenditures for segment assets | 6,000 |  | 1,000 |  | 6,000 |  | 142,000 |  |
Segments Total [Member] |  |  |  |  |  |  |  |  |
Financial information of our reporting segments [Abstract] |  |  |  |  |  |  |  |  |
Revenue from external customers | 19,072,000 | [1] | 29,190,000 | [1] | 61,685,000 | [1] | 100,824,000 | [1] |
Intercompany revenues | 93,000 |  | 315,000 |  | 1,215,000 |  | 1,590,000 |  |
Gross profit | 3,129,000 |  | 4,226,000 |  | 7,690,000 |  | 12,525,000 |  |
Interest income | 0 |  | 0 |  | 0 |  | 0 |  |
Interest expense | 11,000 |  | 6,000 |  | 35,000 |  | 16,000 |  |
Interest expense - financing fees | 0 |  | 0 |  | 0 |  | 0 |  |
Depreciation and amortization | 1,247,000 |  | 1,330,000 |  | 3,771,000 |  | 4,047,000 |  |
Segment profit (loss) | 1,003,000 |  | 1,305,000 |  | 92,000 |  | 3,564,000 |  |
Expenditures for segment assets | 198,000 |  | 25,000 |  | 373,000 |  | 408,000 |  |
Corporate [Member] |  |  |  |  |  |  |  |  |
Financial information of our reporting segments [Abstract] |  |  |  |  |  |  |  |  |
Revenue from external customers | 0 | [2] | 0 | [2] | 0 | [2] | 0 | [2] |
Intercompany revenues | 0 | [2] | 0 | [2] | 0 | [2] | 0 | [2] |
Gross profit | 0 | [2] | 0 | [2] | 0 | [2] | 0 | [2] |
Interest income | 8,000 | [2] | 10,000 | [2] | 27,000 | [2] | 31,000 | [2] |
Interest expense | 176,000 | [2] | 217,000 | [2] | 497,000 | [2] | 626,000 | [2] |
Interest expense - financing fees | 40,000 | [2] | 23,000 | [2] | 87,000 | [2] | 84,000 | [2] |
Depreciation and amortization | 20,000 | [2] | 19,000 | [2] | 72,000 | [2] | 55,000 | [2] |
Segment profit (loss) | (1,571,000) | [2] | (1,777,000) | [2] | (4,528,000) | [2] | (5,852,000) | [2] |
Expenditures for segment assets | 0 | [2] | 0 | [2] | 0 | [2] | 4,000 | [2] |
Segment discontinued operations [Member] |  |  |  |  |  |  |  |  |
Financial information of our reporting segments [Abstract] |  |  |  |  |  |  |  |  |
Segment assets | $ 5,287,000 |  | $ 2,140,000 |  | $ 5,287,000 |  | $ 2,140,000 |  |
[1] | Includes revenues generated from CH Plateau Remediation Company (“CHPRC”) of $6,082,000 or 31.9% and $18,522,000 or 30.0% for the three and nine months ended September 30, 2013, respectively and $6,036,000 or 20.7% and $18,669,000 or 18.6% for the corresponding period of 2012, respectively.
[2] | Amounts reflect the activity for corporate headquarters not included in the segment information.

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