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Business Segment Information - Segment Operating Results (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2015 segment | Sep. 30, 2015 USD ($) | Sep. 30, 2014 USD ($) | Sep. 30, 2015 USD ($) segment | Sep. 30, 2014 USD ($)
Segment Reporting Information [Line Items] |  |  |  |  |
Number of reportable segments | segment |  |  |  | 4 |
Revenues: |  |  |  |  |
Earnings (loss) from equity method investments |  | $ (41) | $ 5,603 | $ 5,133 | $ 22,019
Consulting services |  | 665 | 1,499 | 1,349 | 3,521
Royalties |  | 3,273 | 2,275 | 7,767 | 4,255
Chemicals and other |  | 132 | 77 | 749 | 214
Total reported revenues |  | 12,885 | 9,072 | 49,537 | 13,230
Equipment sales |  | 12,088 | 7,496 | 47,439 | 9,495
Segment reporting operating income (loss) |  |  |  |  |
Segment reporting operating income (loss) |  | (9,989) | (10,279) | (34,665) | (26,268)
Subsequent Event |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Number of reportable segments | segment | 2 |  |  |  |
Operating Segments |  |  |  |  |
Revenues: |  |  |  |  |
Total reported revenues |  | 16,976 | 17,562 | 63,708 | 41,054
Segment reporting operating income (loss) |  |  |  |  |
Segment reporting operating income (loss) |  | (1,966) | 4,498 | (1,039) | 15,693
Refined Coal | Operating Segments |  |  |  |  |
Revenues: |  |  |  |  |
Earnings (loss) from equity method investments |  | (41) | 5,603 | 5,133 | 22,019
Consulting services |  | 0 | 160 | 55 | 596
Royalties |  | 3,273 | 2,275 | 7,767 | 4,255
Total reported revenues |  | 3,232 | 8,038 | 12,955 | 26,870
Segment reporting operating income (loss) |  |  |  |  |
Segment reporting operating income (loss) |  | 1,458 | 6,491 | 7,294 | 22,406
Refined Coal | Segment Reconciling Items |  |  |  |  |
Revenues: |  |  |  |  |
Earnings (loss) from equity method investments |  | 41 | (5,603) | (5,133) | (22,019)
Royalties |  | (3,273) | (2,275) | (7,767) | (4,255)
Total reported revenues |  | (3,232) | (7,878) | (12,900) | (26,274)
Emissions Control - Engineering Technology Services | Operating Segments |  |  |  |  |
Revenues: |  |  |  |  |
Consulting services |  | 664 | 850 | 1,255 | 1,856
Chemicals and other |  | 132 | 77 | 749 | 214
Total reported revenues |  | 9,583 | 8,066 | 46,050 | 10,963
Equipment sales |  | 8,787 | 7,139 | 44,046 | 8,893
Segment reporting operating income (loss) |  |  |  |  |
Segment reporting operating income (loss) |  | 1,394 | (72) | 5,839 | (1,997)
Emissions Control - Manufacturing | Operating Segments |  |  |  |  |
Revenues: |  |  |  |  |
Consulting services |  | 0 | 490 | 38 | 1,070
Chemicals and other |  | 0 | 0 | 0 | 0
Total reported revenues |  | 3,302 | 846 | 3,432 | 1,671
Equipment sales |  | 3,302 | 356 | 3,394 | 601
Segment reporting operating income (loss) |  |  |  |  |
Segment reporting operating income (loss) |  | (2,402) | (1,539) | (7,772) | (3,535)
Research and Development | Operating Segments |  |  |  |  |
Revenues: |  |  |  |  |
Total reported revenues |  | 859 | 612 | 1,271 | 1,550
Segment reporting operating income (loss) |  |  |  |  |
Segment reporting operating income (loss) |  | (2,416) | (382) | (6,400) | (1,181)
Research and Development | Segment Reconciling Items |  |  |  |  |
Revenues: |  |  |  |  |
Total reported revenues |  | $ (859) | $ (612) | $ (1,271) | $ (1,550)

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