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COMMITMENTS AND CONTINGENCIES. (Details Narrative) - USD ($) $ in Thousands |  |  | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Dec. 29, 2016 | Feb. 27, 2015 | Sep. 30, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016
Rent expense |  |  |  | $ 12,436 | $ 16,572 | $ 16,253 |
Gain on litigation settlement |  |  |  |  | 3,600 |  |
Proceeds from legal settlement |  |  |  |  | 3,900 |  |
Ethanol Purchase Contracts [Member] |  |  |  |  |  |  |
Indexed-price purchase contracts |  |  | 7,150,000 gallons |  |  |  |
Fixed-price purchase contracts value |  |  | $ 23,930 |  |  |  |
Ethanol Sales Contracts [Member] |  |  |  |  |  |  |
Open ethanol indexed-price sales contracts |  |  | 184,865,000 gallons |  |  |  |
Open fixed-price sales contracts valued |  |  | $ 124,090 |  |  |  |
Co-products Sales Contracts [Member] |  |  |  |  |  |  |
Open ethanol indexed-price sales contracts |  |  | 50,000 tons |  |  |  |
Open fixed-price sales contracts valued |  |  | $ 33,575 |  |  |  |
Suppliers [Member] | Ethanol Purchase Contracts [Member] |  |  |  |  |  |  |
Fixed-price purchase contracts value |  |  | $ 14,304 |  |  |  |
Assessment Financing [Member] |  |  |  |  |  |  |
Maximum amount of finance to be amortized under property tax assessments |  |  |  |  |  |  | $ 10,000
Project amortized period |  |  |  | 20 years |  |  |
Capital expenditures |  |  |  | $ 9,342 | $ 7,714 |  |
Additional property tax payments |  |  |  | $ 900 |  |  |
Interest rate on outstanding balance of assessment |  |  |  | 5.60% |  |  |
Western Sugar Contract [Member] |  |  |  |  |  |  |
Litigation reserve |  |  |  |  |  | 2,800 |
Gain on litigation settlement |  |  |  |  |  | $ 1,100 |
Settlement cliam | $ 1,700 |  |  |  |  |  |
Amount of expectation damages |  | $ 8,600 |  |  |  |  |
Ethanol contracts [Member] |  |  |  |  |  |  |
Sales commitments |  |  |  | $ 92,900 |  |  |
Indexed-price contracts to sell |  |  |  | 258,200,000 gallons |  |  |
Ethanol contracts [Member] | Suppliers [Member] |  |  |  |  |  |  |
Purchase commitments |  |  |  | $ 6,605 |  |  |
Indexed-price purchase contracts |  |  |  | 30,800,000 gallons |  |  |
Co-product contracts [Member] |  |  |  |  |  |  |
Sales commitments |  |  |  | $ 44,800 |  |  |
Indexed-price contracts to sell |  |  |  | 801,000 tons |  |  |
Corn contract [Member] | Suppliers [Member] |  |  |  |  |  |  |
Purchase commitments |  |  |  | $ 28,294 |  |  |

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