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Business Segment Information (Tables) | 9 Months Ended
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Sep. 30, 2021
Segment Reporting [Abstract] |
Segment Operating Results | The following table presents the Company's operating segment results for the three and nine months ended September 30, 2021 and 2020:
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
(in thousands) |  | 2021 |  | 2020 |  | 2021 |  | 2020
Revenues: |  |  |  |  |  |  |  |
Refined Coal: |  |  |  |  |  |  |  |
Earnings in equity method investments |  | $ | 22,195 |  |  | $ | 9,518 |  |  | $ | 61,944 |  |  | $ | 25,959 |
License royalties, related party |  | 4,165 |  |  | 3,627 |  |  | 11,888 |  |  | 9,986 |
|  | 26,360 |  |  | 13,145 |  |  | 73,832 |  |  | 35,945 |
Advanced Purification Technologies: |  |  |  |  |  |  |  |
Consumables |  | 24,689 |  |  | 15,844 |  |  | 57,696 |  |  | 33,231 |
|  | 24,689 |  |  | 15,844 |  |  | 57,696 |  |  | 33,231 |
Total segment reporting revenues |  | 51,049 |  |  | 28,989 |  |  | 131,528 |  |  | 69,176 |
Adjustments to reconcile to reported revenues: |  |  |  |  |  |  |  |
Earnings in equity method investments |  | (22,195) |  |  | (9,518) |  |  | (61,944) |  |  | (25,959) |
Total reported revenues |  | $ | 28,854 |  |  | $ | 19,471 |  |  | $ | 69,584 |  |  | $ | 43,217 |
Segment operating income (loss): |  |  |  |  |  |  |  |
Refined Coal |  | $ | 26,341 |  |  | $ | 12,817 |  |  | $ | 73,517 |  |  | $ | 34,454 |
Advanced Purification Technologies (1) (2) |  | 4,591 |  |  | (3,280) |  |  | 4,864 |  |  | (40,649) |
Total segment operating income (loss) |  | $ | 30,932 |  |  | $ | 9,537 |  |  | $ | 78,381 |  |  | $ | (6,195) |
(1) Included in APT segment operating income (loss) for the three and nine months ended September 30, 2021 and 2020 is $2.0 million and $5.7 million, $1.6 million and $5.4 million, respectively, of depreciation, amortization, depletion and accretion expense on mine and Red River Plant long-lived assets and liabilities and $0.1 million, $0.4 million, zero and zero, respectively, of amortization of Upfront Customer Consideration. (2) Included in APT segment operating income for the nine months ended September 30, 2021 is $1.9 million gain related to the change in the Marshall Mine ARO as of September 30, 2021.
Reconciliation of Reportable Segment Amounts to Consolidated Balances | A reconciliation of reportable segment operating income to consolidated income (loss) before income tax expense is as follows:
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
(in thousands) |  | 2021 |  | 2020 |  | 2021 |  | 2020
Total reported segment operating income (loss) |  | $ | 30,932 |  |  | $ | 9,537 |  |  | $ | 78,381 |  |  | $ | (6,195) |
Adjustments to reconcile to income (loss) before income (loss) tax expense attributable to the Company: |  |  |  |  |  |  |  |
Corporate payroll and benefits |  | (690) |  |  | (587) |  |  | (2,155) |  |  | (2,444) |
Corporate legal and professional fees |  | (1,024) |  |  | (1,176) |  |  | (4,154) |  |  | (3,850) |
Corporate general and administrative |  | (1,011) |  |  | (1,116) |  |  | (3,236) |  |  | (4,273) |
Corporate depreciation and amortization |  | (132) |  |  | (148) |  |  | (408) |  |  | (337) |
Corporate interest income (expense), net |  | 54 |  |  | (680) |  |  | (944) |  |  | (2,446) |
Other income, net |  | 705 |  |  | (1) |  |  | 1,109 |  |  | 128 |
Income (loss) before income tax expense |  | $ | 28,834 |  |  | $ | 5,829 |  |  | $ | 68,593 |  |  | $ | (19,417) |
Reconciliation of Assets from Segment to Consolidated | A reconciliation of reportable segment assets to consolidated assets is as follows:
|  | As of
(in thousands) |  | September 30, 2021 |  | December 31, 2020
Assets: |  |  |  |
Refined Coal (1) |  | $ | 7,182 |  |  | $ | 11,516 |
Advanced Purification Technologies (2) |  | 83,862 |  |  | 80,877 |
Total segment assets |  | 91,044 |  |  | 92,393 |
All Other and Corporate (3) |  | 90,729 |  |  | 54,278 |
Consolidated |  | $ | 181,773 |  |  | $ | 146,671 |
(1) Includes $2.9 million and $7.7 million of investments in equity method investees as of September 30, 2021 and December 31, 2020, respectively. (2) Includes $37.0 million and $34.6 million of long-lived assets, net. (3) Includes the Company's deferred tax assets of $1.6 million and $10.6 million as of September 30, 2021 and December 31, 2020, respectively. Also includes Cash, cash equivalents and restricted cash of $82.1 million and $17.2 million as of September 30, 2021 and December 31, 2020.

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- Definition Tabular disclosure of all significant reconciling items in the reconciliation of total assets from reportable segments to the entity's consolidated assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8924-108599 + Details
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- Definition Tabular disclosure of the reconciliation of profit (loss) from reportable segments to the consolidated income (loss) before income tax expense (benefit) and discontinued operations. Includes, but is not limited to, reconciliation after income tax if income tax is allocated to the reportable segment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8924-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599 + Details
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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8813-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599 + Details
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