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Equity Method Investments - Rollforward of CCS Investment (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Sep. 30, 2015 | Sep. 30, 2014 | Dec. 31, 2014 | Feb. 10, 2014
Equity Method Investments [Roll Forward] |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  | $ 19,584 |  |  |  | $ 19,584 |  |  |
Cash distributions from CCS | $ 41 |  |  | $ (5,603) |  |  | (5,133) | $ (22,019) |  |
Adjustment for current year cash distributions in excess of investment balance |  |  |  |  |  |  | 4,730 | 22,547 |  |
Total investment balance, equity earnings (loss) and cash distributions | 18,546 |  |  |  |  |  | 18,546 |  |  |
Clean Coal Solutions (CCS) |  |  |  |  |  |  |  |  |  |
Equity Method Investments [Roll Forward] |  |  |  |  |  |  |  |  |  |
Beginning balance | 0 | $ 0 | 0 | 0 | $ 0 | $ 0 | 0 | 0 |  |
ADES proportionate share of income from CCS | 8,127 | 7,825 | 9,827 | 7,805 | 5,130 | 4,644 |  |  |  |
Increase of equity loss in excess of investment balance (prior to cash distributions) | (8,127) | (7,825) | (9,827) | (7,805) | (5,130) | (4,644) |  |  |  |
Cash distributions from CCS | 0 | (4,630) | (100) | (6,226) | (9,733) | (6,588) | (4,730) | (22,547) |  |
Adjustment for current year cash distributions in excess of investment balance | 0 | 4,630 | 100 | 6,226 | 9,733 | 6,588 |  |  |  |
Total investment balance, equity earnings (loss) and cash distributions | $ 0 | 0 | 0 | 0 | 0 | 0 | $ 0 | 0 |  |
Ownership interest, percent | 42.50% |  |  |  |  |  | 42.50% |  | 42.50% |
Ownership interest multiplied by net income available to members, percent | 42.50% |  |  |  |  |  | 42.50% |  |  |
Clean Coal Solutions (CCS) | ADES equity earnings (loss) |  |  |  |  |  |  |  |  |  |
Equity Method Investments [Roll Forward] |  |  |  |  |  |  |  |  |  |
Beginning balance | $ 4,630 | 100 | 0 | 9,733 | 6,588 | 0 | $ 0 | 0 |  |
ADES proportionate share of income from CCS | 8,127 | 7,825 | 9,827 | 7,805 | 5,130 | 4,644 |  |  |  |
Increase of equity loss in excess of investment balance (prior to cash distributions) | (8,127) | (7,825) | (9,827) | (7,805) | (5,130) | (4,644) |  |  |  |
Cash distributions from CCS | 0 | 0 | 0 | 0 | 0 | 0 |  |  |  |
Adjustment for current year cash distributions in excess of investment balance | 0 | 4,630 | 100 | 6,226 | 9,733 | 6,588 |  |  |  |
Total investment balance, equity earnings (loss) and cash distributions | 0 | 4,630 | 100 | 6,226 | 9,733 | 6,588 | 0 | 6,226 |  |
Clean Coal Solutions (CCS) | Cash distributions |  |  |  |  |  |  |  |  |  |
Equity Method Investments [Roll Forward] |  |  |  |  |  |  |  |  |  |
Beginning balance | 4,630 | 100 | 0 | 9,733 | 6,588 | 0 | 0 | 0 |  |
ADES proportionate share of income from CCS | 0 | 0 | 0 | 0 | 0 | 0 |  |  |  |
Increase of equity loss in excess of investment balance (prior to cash distributions) | 0 | 0 | 0 | 0 | 0 | 0 |  |  |  |
Cash distributions from CCS | 0 | 4,630 | 100 | 6,226 | 9,733 | 6,588 |  |  |  |
Adjustment for current year cash distributions in excess of investment balance | 0 | 0 | 0 | 0 | 0 | 0 |  |  |  |
Total investment balance, equity earnings (loss) and cash distributions | 0 | 4,630 | 100 | 6,226 | 9,733 | 6,588 | 0 | 6,226 |  |
Clean Coal Solutions (CCS) | Cash distributions and equity loss in (excess) of investment balance |  |  |  |  |  |  |  |  |  |
Equity Method Investments [Roll Forward] |  |  |  |  |  |  |  |  |  |
Beginning balance | (16,955) | (20,150) | (29,877) | (19,453) | (14,850) | (12,906) | (29,877) | (12,906) |  |
ADES proportionate share of income from CCS | 0 | 0 | 0 | 0 | 0 | 0 |  |  |  |
Increase of equity loss in excess of investment balance (prior to cash distributions) | 8,127 | 7,825 | 9,827 | 7,805 | 5,130 | 4,644 |  |  |  |
Cash distributions from CCS | 0 | 0 | 0 | 0 | 0 | 0 |  |  |  |
Adjustment for current year cash distributions in excess of investment balance | 0 | (4,630) | (100) | (6,226) | (9,733) | (6,588) |  |  |  |
Total investment balance, equity earnings (loss) and cash distributions | (8,828) | $ (16,955) | (20,150) | (17,874) | $ (19,453) | $ (14,850) | (8,828) | (17,874) |  |
RMC6, LLC (RCM6) |  |  |  |  |  |  |  |  |  |
Equity Method Investments [Roll Forward] |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  | $ 15,400 |  |  |  | 15,400 |  |  |
Cash distributions from CCS | 1,399 |  |  | $ 1,515 |  |  | 3,127 | $ 3,057 |  |
Total investment balance, equity earnings (loss) and cash distributions | $ 13,400 |  |  |  |  |  | $ 13,400 |  |  |
Ownership interest, percent | 24.95% |  |  |  |  |  | 24.95% |  | 24.95% | 24.95%

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