FutureFuel (FF) 10-K 14 Mar 23 2022 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2022	Mar. 14, 2023	Jun. 30, 2022
Document Information [Line Items]
Entity Central Index Key	0001337298
Entity Registrant Name	FUTUREFUEL CORP.
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2022
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Document Transition Report	false
Entity File Number	0-52577
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-3340900
Entity Address, Address Line One	8235 Forsyth Blvd., Suite 400
Entity Address, City or Town	St Louis
Entity Address, State or Province	MO
Entity Address, Postal Zip Code	63105
City Area Code	314
Local Phone Number	854-8352
Title of 12(b) Security	Common Stock
Trading Symbol	FF
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 188,426,391
Entity Common Stock, Shares Outstanding		43,763,243
Auditor Firm ID	49
Auditor Name	RSM US LLP
Auditor Location	St. Louis, Missouri

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Assets
Cash and cash equivalents	$ 175,640	$ 137,521
Accounts receivable, inclusive of the blenders’ tax credit of $8,970 and $8,232, and net of allowances for bad debt of $48 and $67, respectively	26,198	29,316
Accounts receivable – related parties	6	58
Inventory	26,761	26,920
Income tax receivable	1,959	9,760
Prepaid expenses	3,694	3,588
Prepaid expenses – related parties	12	4
Marketable securities	37,126	47,190
Other current assets	2,380	1,476
Total current assets	273,776	255,833
Property, plant and equipment, net	76,941	82,901
Other assets	5,252	5,596
Total noncurrent assets	82,193	88,497
Total Assets	355,969	344,330
Liabilities and Stockholders’ Equity
Accounts payable, inclusive of the blenders’ tax credit rebates due customers of $890 and $890, respectively	28,546	14,912
Accounts payable – related parties	7,799	7,911
Deferred revenue – current	3,772	6,151
Dividends payable	10,503	0
Accrued expenses and other current liabilities	5,477	6,081
Accrued expenses and other current liabilities – related parties	1	1
Total current liabilities	56,098	35,056
Deferred revenue – non-current	15,079	16,755
Noncurrent deferred income tax liability	0	1,870
Other noncurrent liabilities	1,792	1,721
Total noncurrent liabilities	16,871	20,346
Total liabilities	72,969	55,402
Commitments and contingencies:
Preferred stock, $0.0001 par value, 5,000,000 shares authorized, none issued and outstanding	0	0
Common stock, $0.0001 par value, 75,000,000 shares authorized, 43,763,243 and 43,763,243 issued and outstanding as of December 31, 2022 and 2021	4	4
Accumulated other comprehensive income	(1)	178
Additional paid in capital	282,489	282,443
Retained earnings	508	6,303
Total stockholders’ equity	283,000	288,928
Total Liabilities and Stockholders’ Equity	$ 355,969	$ 344,330

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Allowance for bad debt	$ 48	$ 67
Accounts receivable, tax credit	$ 8,970	$ 8,232
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares issued (in shares)	43,763,243	43,743,243
Common stock, shares outstanding (in shares)	43,763,243	43,743,243

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue	$ 396,014	$ 321,386	$ 204,505
Gross profit	28,993	23,537	31,307
Selling, general, and administrative expenses
Compensation expense	3,540	2,586	2,760
Other expense	3,881	3,920	2,600
Related party expense	611	649	620
Research and development expenses	3,415	3,484	2,988
Total operating expenses	11,447	10,639	8,968
Income from operations	17,546	12,898	22,339
Interest and dividend income	4,870	3,119	5,648
Interest expense	(128)	(131)	(151)
Loss on marketable securities	(8,546)	(70)	(4,375)
Other (expense) income	(4)	114	8,317
Other (expense) income	(3,808)	3,032	9,439
Income before income taxes	13,738	15,930	31,778
Income tax benefit	(1,473)	(10,325)	(14,786)
Net income	$ 15,211	$ 26,255	$ 46,564
Earnings per common share
Basic (in dollars per share)	$ 0.35	$ 0.60	$ 1.06
Diluted (in dollars per share)	$ 0.35	$ 0.60	$ 1.06
Weighted average shares outstanding
Basic (in shares)	43,763,243	43,756,065	43,743,243
Diluted (in shares)	43,763,489	43,756,113	43,744,150
Net income	$ 15,211	$ 26,255	$ 46,564
Other comprehensive loss from unrealized net losses on available-for- sale debt securities	(227)	(38)	(111)
Income tax effect	48	8	23
Total unrealized losses, net of tax	(179)	(30)	(88)
Comprehensive income	15,032	26,225	46,476
Non-related Parties [Member]
Revenue	395,555	320,125	202,529
Cost of goods sold	357,182	274,293	158,730
Non-related Parties [Member] | Shipping and Handling [Member]
Cost of goods sold	4,240	6,787	7,401
Related Parties [Member]
Revenue	459	1,261	1,976
Cost of goods sold	5,425	16,593	6,890
Related Parties [Member] | Shipping and Handling [Member]
Cost of goods sold	$ 174	$ 176	$ 177

Consolidated Statements of Cash

Consolidated Statements of Cash Flows $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Cash flows from operating activities
Net income	$ 15,211	$ 26,255	$ 46,564
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	10,454	10,452	11,150
Amortization of deferred financing costs	95	95	108
Benefit for deferred income taxes	(1,822)	(10,454)	(610)
Change in fair value of equity securities	8,297	904	246
Change in fair value of derivative instruments	(343)	609	(390)
Loss (gain) on the sale of investments	248	(834)	4,129
Stock based compensation	46	0	49
Loss on disposal of property and equipment	64	11	31
Impairment of intangible asset	0	1,315	0
Noncash interest expense	33	32	43
Changes in operating assets and liabilities:
Accounts receivable	3,118	(7,929)	88,865
Accounts receivable – related parties	52	1,368	3,176
Inventory	162	6,969	3,684
Income tax receivable	7,801	7,908	(9,606)
Prepaid expenses	(106)	379	(2,035)
Prepaid expenses – related party	(8)	(4)	12
Other assets	799	732	658
Accounts payable	13,790	2,095	(48,639)
Accounts payable - related parties	(112)	6,927	(271)
Accrued expenses and other current liabilities	(948)	870	456
Accrued expenses and other current liabilities – related parties	0	1	(64)
Deferred revenue	(4,055)	(2,931)	(691)
Other noncurrent liabilities	(325)	(686)	(462)
Net cash provided by operating activities	52,451	44,084	96,403
Cash flows from investing activities
Collateralization of derivative instruments	(404)	(750)	158
Purchase of marketable securities	0	(23,546)	(5,073)
Proceeds from the sale of marketable securities	1,292	40,652	9,803
Proceeds from the sale of property and equipment	61	0	50
Proceeds from the sale of intangible assets	0	93	0
Capital expenditures	(4,778)	(1,456)	(4,464)
Net cash (used in) provided by investing activities	(3,829)	14,993	474
Cash flows from financing activities
Loan proceeds	0	0	8,180
Payment on loan	0	0	(8,180)
Minimum tax withholding on stock options exercised	0	(3)	0
Deferred financing costs	0	0	(477)
Proceeds from the issuance of stock	0	231	0
Equipment financing proceeds	0	0	119
Payment of dividends	(10,503)	(119,906)	(141,728)
Net cash used in financing activities	(10,503)	(119,678)	(142,086)
Net change in cash and cash equivalents	38,119	(60,601)	(45,209)
Cash and cash equivalents at beginning of period	137,521	198,122	243,331
Cash and cash equivalents at end of period	175,640	137,521	198,122
Cash paid for interest	3	47	2
Cash paid for income taxes	69	83	661
Noncash investing and financing activities:
Noncash capital expenditures	208	364	0
Noncash operating leases	707	269	442
Dividends payable	$ 10,503	$ 0	$ 10,498

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] AOCI Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Common Stock [Member]	AOCI Attributable to Parent [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2019								43,743,243
Balance at Dec. 31, 2019	$ (12)	$ (12)	$ 4	$ 296	$ 282,166	$ 184,620	$ 467,086	$ 4	$ 296	$ 282,166	$ 184,632	$ 467,098
Cash dividends declared								0	0	0	(141,728)	(141,728)
Stock based compensation										49		49
Other comprehensive loss								$ 0	(88)	0	0	(88)
Net income											46,564	46,564
Balance (in shares) at Dec. 31, 2020								43,743,243
Balance at Dec. 31, 2020								$ 4	208	282,215	89,456	371,883
Cash dividends declared								0	0	0	(109,408)	(109,408)
Other comprehensive loss								$ 0	(30)	0	0	(30)
Net income											26,255	26,255
Proceeds from the issuance of stock (in shares)								20,000
Proceeds from the issuance of stock										231		231
Minimum tax withholding										(3)		(3)
Balance (in shares) at Dec. 31, 2021								43,763,243
Balance at Dec. 31, 2021								$ 4	178	282,443	6,303	288,928
Cash dividends declared								0	0	0	(21,006)	(21,006)
Stock based compensation										46		46
Other comprehensive loss								$ 0	(179)	0	0	(179)
Net income											15,211	15,211
Balance (in shares) at Dec. 31, 2022								43,763,243
Balance at Dec. 31, 2022								$ 4	$ (1)	$ 282,489	$ 508	$ 283,000

Note 1 - Description of Busines

Note 1 - Description of Business and Operations	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Nature of Operations [Text Block]	1 Description of business and operations FutureFuel Corp. (the “Company”) is a Delaware corporation with its wholly owned subsidiaries, FutureFuel Chemical Company; FFC Grain, L.L.C.; FutureFuel Warehouse Company, L.L.C.; and Legacy Regional Transport, L.L.C. The Company’s sole operating facility is FutureFuel Chemical Company located in Batesville, Arkansas, a manufacturer of specialty and performance chemicals and biofuels.

Note 2 - Significant Accounting

Note 2 - Significant Accounting Policies and Basis of Presentation	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Significant Accounting Policies [Text Block]	2 Significant accounting policies and basis of presentation Financial Presentation The consolidated financial statements of FutureFuel Corp. and subsidiaries are prepared in conformity with accounting principles generally accepted (“GAAP”) in the United States and include amounts that are based upon management estimates and judgments which could differ from actual future results. Intercompany transactions and balances are eliminated in consolidation. Certain reclassifications were made to prior year amounts to conform to the 2022 Cash and cash equivalents Cash equivalents consist of highly liquid investments with original maturities of three may Accounts receivable, allowance for doubtful accounts, and credit risk Accounts receivable are recorded at the invoiced amount and only bear interest if outstanding beyond the agreed upon payment terms. The Company has established procedures to monitor credit risk and has not may The Company adopted Accounting Standards Update (“ASU’) 2016 13, Financial Instruments - Credit Losses, Measurement of Credit Losses on Financial Instruments on January 1, 2020 not Customer concentrations For the twelve December 31, 2022, 2021, 2020, two 2022. three 2021 one 2020. December 31, 2022 2021, No 10% 2022, 2021, 2020. Inventory Inventories are valued at the lower of cost or market. The Company determines the cost of raw materials, work in process, and finished goods inventories by the last-in, first first first Derivative instruments The Company records all derivative instruments at fair value. Fair value is determined by using the closing prices of the derivative instruments on the New York Mercantile Exchange at the end of an accounting period. Changes in the fair value of derivative instruments are recognized at the end of each accounting period and recorded in the statement of income as a component of cost of goods sold. In order to manage commodity price risk caused by market fluctuations in biofuel prices, future purchases of feedstock used in biodiesel production, physical feedstock, finished product inventories attributed to the process, and other petroleum products purchased or sold, the Company may 815 20 25, Derivatives and Hedging no 2022 2021. Marketable securities Investments consist of marketable equity and debt securities stated at fair value. The debt securities are designated as available-for-sale securities at the time of purchase based upon the intended holding period. Gains and losses from the sale of marketable securities and the changes in the fair value of equity securities are recognized as “gains (losses) on marketable securities” as a component of other income (expense) in the consolidated statements of income and comprehensive income. The cost basis used for all marketable securities is specific identification. Changes in the fair value of debt securities are recognized in “accumulated other comprehensive income” on the consolidated balance sheets, unless the Company determines that an unrealized loss will not See Notes 7 8 Fair value measurements The Company records recurring and non-recurring financial assets and liabilities as well as all non-financial assets and liabilities subject to fair value measurement at the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. These fair value principles prioritize valuation inputs across three 1 2 3 Property, plant and equipment Property, plant, and equipment is carried at cost. Maintenance and repairs are charged to earnings; replacements and betterments are capitalized. When the Company retires or otherwise disposes of an asset, it removes the cost of such asset and related accumulated depreciation from the accounts. The Company records any profit and loss on retirement or other disposition in earnings. Depreciation expense is calculated based on historical cost and the estimated useful lives of the assets, generally using the straight-line method with the following useful lives: Building & building equipment (years) 20 – 39 Machinery and equipment (years) 3 – 33 Transportation equipment (years) 5 – 33 Other (years) 5 – 33 Impairment of assets The Company evaluates the carrying value of long-lived tangible assets when events or changes in circumstances indicate that the carrying value may not not Asset retirement obligations and environmental costs The Company establishes reserves for closure/post-closure costs associated with the environmental and other assets it maintains, which include, but are not Environmental costs are capitalized if they extend the life of the related property, increase its capacity, and/or mitigate or prevent future contamination. The cost of operating and maintaining environmental control facilities is charged to expense. Litigation The Company and its operations from time to time may Revenue recognition In accordance with ASC Topic 606, Revenue from Contracts with Customers 30 75 2 10 The Company applies the practical expedient and excludes the value of unsatisfied performance obligations for (i) contracts with an original expected length of one Revenue within the biofuel segment includes revenue from biodiesel RINs. RINs are renewable identification numbers under the Renewable Fuel Standard ( “RFS2” 1.5 No Taxes collected from customers remitted to governmental authorities are excluded from revenue. Shipping and handling fees related to sales transactions are billed to customers and recorded as sales revenue. Cost of goods sold and distribution Cost of goods sold consists of raw and packaging materials, direct manufacturing costs, depreciation, analytical lab costs, inbound freight, purchasing, and other indirect costs necessary to manufacture products. Biodiesel cost of goods sold also includes a credit for the one 2021 2022 December 31, 2024. 3 Distribution expense includes outbound freight costs, depreciation of distribution equipment, and other indirect costs necessary to distribute product. Selling, general, and administrative expenses Selling, general, and administrative expenses include personnel costs associated with sales, marketing, and administration; legal and related costs; consulting and professional service fees; advertising expenses; and other similar costs. Research and development expenses Research and development expenses include direct salaries, depreciation of equipment, material expenditures, contractor fees, and other indirect costs. All costs identified as research and development costs are charged to expense when incurred. Comprehensive income Comprehensive income is comprised of net income and other comprehensive income (loss) (“OCI”). Comprehensive income comprises all changes in stockholders’ equity from transactions and other events and circumstances from non-owner sources. The Company’s OCI comprises unrealized gains and losses resulting from its investments in marketable debt securities classified as available-for-sale (see Note 7 Unrealized gains and losses are determined using the specific identification method and are classified in OCI. Income taxes The income tax (benefit) provision is determined using the asset and liability approach of accounting for income taxes. Under this approach, deferred taxes represent the future tax consequences expected to occur when the reported amounts of assets and liabilities are recovered or paid. The provision for (benefit from) income taxes represents income taxes paid or payable for the current year plus the change in deferred taxes during the year. Deferred taxes result from differences between the financial and tax bases of the Company’s assets and liabilities and are adjusted for changes in tax rates and tax laws when changes are enacted. A tax valuation allowance is recognized if it is more likely than not not not three no Recently adopted accounting standards None. Recently issued accounting pronouncements Reference Rate Reform (ASU No. 2020 04 In March 2020, January 1, 2020 December 31, 2022. December 2024.

Note 3 - Government Tax Credits

Note 3 - Government Tax Credits	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Other Income and Other Expense Disclosure [Text Block]	3 Government tax credits BTC and Small Agri-Biodiesel Producer Tax Credit The BTC provides a one 0.1% The Further Consolidated Appropriations Act of 2020 December 20, 2019, 2018 2019 December 31, 2022. August 2022, December 31, 2024. As part of each law from which the BTC mentioned above was reinstated, small agri-biodiesel producers with production capacity not 60 $0.10 first 15 2022, 2021, 2020 CARES ACT – EMPLOYEE RETENTION TAX CREDIT The Coronavirus Aid, Relief, and Economic Security Act ("CARES Act"), was enacted on March 27, 2020, January 1, 2021,

Note 4 - Revenue Recognition

Note 4 - Revenue Recognition	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	4 Revenue recognition The majority of revenue is from short term contracts with revenue recognized when a single performance obligation to transfer product under the terms of a contract with a customer are satisfied. Certain of the Company’s custom chemical contracts within the chemical segment contain a material right, as defined by ASC Topic 606, 30 606. Contract Assets and Liabilities: Contract assets consist of unbilled amounts resulting from revenue recognized through bill-and-hold arrangements. The contract assets for 2022 2021 one 2022 2021, 2022 2021, The following table provides the balances of receivables, contract assets, and contract liabilities from contracts with customers. Contract balances Contract Assets and Liabilities December 31, 2022 2021 Trade receivables, included in accounts receivable* $ 16,459 $ 20,780 Contract assets, included in accounts receivable 775 362 Contract liabilities, included in Deferred revenue - short-term 3,565 5,944 Contract liabilities, included in Deferred revenue - long-term 11,605 13,059 * Exclusive of the BTC of $8,970 and $8,232, respectively, and net of allowances for bad debt of $48 and $67, respectively, as of the dates noted. Transaction price allocated to the remaining performance obligations As of December 31, 2022, one five one four 2 Disaggregation of revenue - contractual and non-contractual Twelve months ended December 31, 2022 2021 Contract revenue from customers with > 1-year arrangement $ 33,686 $ 25,918 Contract revenue from customer with < 1-year arrangement 362,106 295,246 Revenue from non-contractual arrangements 222 222 Total revenue $ 396,014 $ 321,386 Timing of revenue Twelve months ended December 31, 2022 2021 Bill-and-hold revenue $ 36,805 $ 34,695 Non-bill-and-hold revenue 359,209 286,691 Total revenue $ 396,014 $ 321,386 Bill-and-hold transactions consisted of four 2022, 2021, 2020 not December 31, 2022, 2021, 2020, not December 31, 2022 2021, not not The Company’s revenues for the years ended December 31, 2022, 2021, 2020 Twelve months ended December 31: 2022 2021 2020 United States $ 394,671 $ 320,148 $ 203,365 All Foreign Countries 1,343 1,238 1,140 Total $ 396,014 $ 321,386 $ 204,505 For the years ended December 31, 2022, 2021, 2020, no 1%

Note 5 - Inventory

Note 5 - Inventory	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Inventory Disclosure [Text Block]	5 Inventory The carrying values of inventory were as follows as of December 31: 2022 2021 At average cost (approximates current cost) Finished goods $ 11,719 $ 12,132 Work in process 879 462 Raw and indirect materials 33,897 30,117 46,495 42,711 LIFO reserve (19,734 ) (15,791 ) Total inventory $ 26,761 $ 26,920 In 2022 2021,

Note 6 - Derivative Instruments

Note 6 - Derivative Instruments	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	6 Derivative instruments Realized and unrealized gains and losses on derivative instruments and changes in fair value of the derivative instruments are recorded in the consolidated statements of income as a component of cost of goods sold and amounted to a net loss of $24,360, net loss of $10,377, and a net gain of $4,379 for the years ended December 31, 2022, 2021, 2020, The volumes and carrying values of the Company’s derivative instruments were as follows at December 31: Asset/ (Liability) 2022 2021 Contract Quantity Fair Value Contract Quantity Fair Value Regulated fixed price future commitments, included in other current assets (in thousand barrels) 305 $ (142 ) 142 $ (485 ) The margin account maintained with a broker to collateralize these derivative instruments carried an account balance of $2,088 and $1,684 at December 31, 2022 2021,

Note 7 - Marketable Securities

Note 7 - Marketable Securities	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Cash, Cash Equivalents, and Marketable Securities [Text Block]	7 Marketable securities At December 31, 2022 2021, The Company has designated the trust preferred securities as being available-for-sale. Accordingly, these securities were recorded at fair value of $3,675 and $3,902 at December 31, 2022 2021, December 31, 2022, 10 For the years ended December 31, 2022, 2021, 2020, 321, In 2022, 2021, 2020,

Note 8 - Fair Value Measurement

Note 8 - Fair Value Measurements	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Fair Value Disclosures [Text Block]	8 Fair value measurements Fair value is defined as the exit price, or the amount that would be received to sell an asset or paid to transfer a liability, in an orderly transaction between market participants as of the measurement date. Fair value accounting pronouncements also include a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs market participants would use in valuing the asset or liability developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the factors market participants would use in valuing the asset or liability developed based upon the best information available in the circumstances. The hierarchy is broken down into three 1 2 not 3 Marketable securities and derivative instruments were fair value measurements using inputs considered as Level 1. no 2 3

Note 9 - Property, Plant, and E

Note 9 - Property, Plant, and Equipment	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	9 Property, plant, and equipment Property, plant, and equipment consisted of the following at December 31: 2022 2021 Land and land improvements $ 5,923 $ 5,924 Buildings and building equipment 27,226 27,229 Machinery and equipment 183,999 180,498 Construction in progress 771 1,024 Accumulated depreciation (140,978 ) (131,774 ) Total $ 76,941 $ 82,901 Depreciation expense totaled $10,454, $10,452, and $11,150 for the years ended December 31, 2022, 2021, 2020,

Note 10 - Other Assets

Note 10 - Other Assets	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Other Assets Disclosure [Text Block]	10 Other assets Other assets primarily comprise supplies and parts which are not twelve December 31, 2022 2021,

Note 11 - Accrued Expenses and

Note 11 - Accrued Expenses and Other Current Liabilities	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]	11 Accrued expenses and other current liabilities Accrued expenses and other current liabilities consisted of the following at December 31: 2022 2021 Accrued employee liabilities $ 3,287 $ 3,347 Accrued property, franchise, motor fuel and other taxes 1,165 1,912 Lease liability, current 630 644 Other 395 178 Total $ 5,477 $ 6,081

Note 12 - Borrowings

Note 12 - Borrowings	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Debt Disclosure [Text Block]	12 Borrowings On March 30, 2020, April 16, 2015 ( five $100,000, March 30, 2025. On March 1, 2023, not not Consolidated Leverage Ratio Adjusted SOFR Rate Loans and Letter of Credit Fee Base Rate Loans Commitment < 1.00:1.0 1.00% 0.00% 0.15% ≥ 1.00:1.0 And < 1.50:1.0 1.25% 0.25% 0.15% ≥ 1.50:1.0 And < 1.50:1.0 1.50% 0.50% 0.20% ≥ 2.00:1.0 And < 1.50:1.0 1.75% 0.75% 0.20% ≥ 2.50:1.0 2.00% 1.00% 0.25% The terms of the Credit Facility contain certain negative covenants and conditions including a maximum consolidated leverage ratio and a minimum consolidated interest coverage ratio. There were no borrowings under the Credit Agreement at December 31, 2022 2021. On March 27, 2020, April 10, 2020 . May 5, 2020 . At December 31, 2022 2021, three

Note 13 - Asset Retirement Obli

Note 13 - Asset Retirement Obligations and Environmental Reserves	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Asset Retirement Obligation Disclosure [Text Block]	13 Asset retirement obligations and environmental reserves The Batesville plant generates hazardous and non-hazardous wastes, the treatment, storage, transportation, and disposal of which are regulated by various governmental agencies. In addition, the Batesville plant may December 31, 2022 2021, 2022, 2021, 2020 2022, 2021, 2020.

Note 14 - Lease Commitments and

Note 14 - Lease Commitments and Purchase Obligations	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Lessee, Operating Leases [Text Block]	14 Lease commitments and purchase obligations The Company leases railcars under multi-year arrangements primarily for delivery of feedstock and biodiesel within its biofuels segment. The lease fees are fixed with no no no one two not Following are supplemental income statement and cash flow information related to leases. Twelve Months Ended December 31, 2022 2021 2020 Operating lease expense $ 862 $ 887 $ 841 Short-term lease expense $ 31 $ 23 106 Cash paid for operating leases $ 862 $ 887 841 Right of use assets obtained in exchange for lease obligations $ 707 $ 269 442 Weighted average discount rate, per annum 5.2 % 3.6 % 3.7 % On December 31, 2022 2021, Following are maturities of lease liabilities at December 31, 2022. 2023 $ 667 2024 398 Total 1,065 Less: imputed interest 46 Present value of lease liabilities $ 1,019 Purchase obligations The Company has entered into contracts for the purchase of goods and services including contracts for feedstocks for biodiesel, expansion of the Company’s specialty chemicals segment, and related infrastructure with less than one The Company holds one 2023 $ 37 2024- 2026 80 Total $ 117

Note 15 - Income Tax (Benefit)

Note 15 - Income Tax (Benefit) Provision	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Income Tax Disclosure [Text Block]	15 Income tax benefit The following table summarizes the income tax (benefit) provision for the years ended: 2022 2021 2020 Income before taxes - U.S. $ 13,738 $ 15,930 $ 31,778 Income tax provision: Federal Current 290 142 (14,234 ) Deferred (1,998 ) (10,417 ) 1,120 State and other Current 60 (13 ) 59 Deferred 175 (37 ) (1, 731 ) Total $ (1,473 ) $ (10,325 ) $ (14,786 ) Differences between the income tax (benefit) provision computed using the U.S. federal statutory income tax rate were as follows: 2022 2021 2020 Amount computed using the statutory rate of 21% for 2022, 2021, and 2020 21.0 % 21.0 % 21.0 % Agri-biodiesel production credit (8.6 ) (7.4 ) (3.7 ) Federal BTC benefit (76.2 ) (75.2 ) (38.7 ) State BTC benefit (7.0 ) (8.9 ) (3.8 ) Credit for increasing research activities (1.0 ) (0.7 ) (0.5 ) Dividends received deduction (1.6 ) (1.6 ) (0.9 ) State income taxes, net 5.1 3.5 (0.5 ) State research credits (0.1 ) - (1.0 ) State rate change and other deferred adjustments 3.6 5.0 - Valuation allowance for deferred tax assets 53.8 - - CARES Act - - (17.4 ) Other 0.3 (0.5 ) (1.0 ) Income tax benefit (10.7 )% (64.8 )% (46.5 )% The income tax benefit in 2022 2021 2020. On March 27, 2020, December 31, 2017 January 1, 2021 100% five 2020 2019 2020 35% 21% fourth 2020, January 2021, 2019. December 31, 2022. fourth 2021, 2020 December 31, 2022. not The Company’s effective tax rates for the years 2022, 2021, 2020 not December 2024. The Company’s 2022 2021 2021 2022. 2021 one As further discussed below, in 2022 $0. The significant components of deferred tax assets and liabilities were as follows as of December 31: 2022 2021 Deferred tax assets Compensation $ 391 $ 427 Inventory reserves 601 685 Self-insurance 70 100 Asset retirement obligation 323 314 Deferred revenue 4,081 5,295 Federal net operating loss carryforwards 9,360 5,428 State net operating loss carryforwards 1,884 2,311 Accrued expenses 2,648 759 Stock based compensation 24 14 Federal credit carryforwards 5,216 3,598 State credit carryforwards 687 676 Research & development costs 749 - Derivative instruments 29 102 Capital loss carryforwards 1,241 1,084 Trading securities 656 - Other 96 - Intangible asset impairment - 168 Subtotal deferred tax assets 28,056 20,961 Valuation Allowance (7,392 ) - Total deferred tax assets 20,664 20,961 Deferred tax liabilities Available for sale securities - (47 ) LIFO inventory (2,740 ) (2,589 ) Depreciation (17,046 ) (18,266 ) Trading securities - (1,090 ) Prepaid expenses (878 ) (839 ) Total deferred tax liabilities (20,664 ) (22,831 ) Net deferred tax liabilities $ 0 $ (1,870 ) The Company’s federal net operating loss carryforwards at December 31, 2022 not December 31, 2022 2019 2022 2024 2032. Federal tax credit carryforwards at December 31, 2022 2019 2022 2039 2042. 2019 2022 2028 2031. Capital loss carryforwards were generated in 2019 2022 2024 2027. A tax valuation allowance is recognized if it is more likely than not not not three no As of December 31, 2022, not There are no December 31, 2022, 2021, 2020, not twelve The Company records interest expense (income) and penalties, net, as a component of income tax (benefit) provision and had accrued interest and penalties of ($95), ($60), and $27 for December 31, 2022, 2021, 2020, December 31, 2022 2021, The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction and with various state jurisdictions. In general, the Company is subject to U.S., state, and local examinations by tax authorities from 2019

Note 16 - Earnings Per Share

Note 16 - Earnings Per Share	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Earnings Per Share [Text Block]	16 Earnings per share In the year ended December 31, 2022, 2021 2020, There were no December 31, 2022, 2021 2020. Basic and diluted earnings per common share were computed as follows: For the twelve months ended December 31: 2022 2021 2020 Numerator: Net income $ 15,211 $ 26,255 $ 46,564 Denominator: Weighted average shares outstanding – basic 43,763,243 43,756,065 43,743,243 Effect of dilutive securities: Stock options 246 48 907 Weighted average shares outstanding – diluted 43,763,489 43,756,113 43,744,150 Basic earnings per share $ 0.35 $ 0.60 $ 1.06 Diluted earnings per share $ 0.35 $ 0.60 $ 1.06 Certain options to purchase the Company’s common stock were not December 31, 2022, 2021 2020

Note 17 - Stock-based Compensat

Note 17 - Stock-based Compensation	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Share-Based Payment Arrangement [Text Block]	17 Stock-based compensation The Board of Directors of the Company adopted an omnibus incentive plan which was approved by the shareholders of the Company at its 2017 ● Encourage ownership in the Company by key personnel whose long-term employment with or engagement by the Company or its subsidiaries is considered essential to its continued progress and, thereby, encourage recipients to act in the Company’s shareholders’ interests and share in its success; ● Encourage such persons to remain in the Company’s employ or in the employ of its subsidiaries; and ● Provide incentives to persons who are not The Incentive Plan authorizes the Company to issue stock options (including incentive stock options and nonqualified stock options), common stock awards, and stock appreciation rights. Eligible participants in the plan include: (i) members of the Company’s board of directors and its executive officers; (ii) regular, active employees of the Company and any of its subsidiaries; and (iii) persons engaged by the Company or any of its subsidiaries to render services to the Company or its subsidiaries as an advisor or consultant. Awards under the Incentive Plan are limited to shares of the Company’s common stock, which may The Incentive Plan became effective upon its approval by the Company’s shareholders on September 7, 2017 ten The Company recognizes compensation expense in its financial statements for common stock-based options based upon the grant-date fair value over the requisite service period. No common stock awards were issued in 2022, 2021 2020. In August 2022 January 2020, two 2021. 2022 August 2027. 2020 January 2025. 2022 2020, There were no stock options exercised in 2022 2020. 2021 The assumptions used in the determination of the fair value of the options granted are provided in the following table: Assumptions 2022 Options 2021 Options January 2020 Options Expected volatility rate 56.61 % n/a 31.53 % Expected dividend yield 3.34 % n/a 2.08 % Risk-free interest rate 3.20 % n/a 1.60 % Expected forfeiture rate 0.00 % n/a 0.00 % Expected term in years 2.3 n/a 2.5 The volatility rate for the options granted in 2022 2020 The expected dividend yield is calculated using the Company’s expected dividend amount at the date of the option grant over the expected term divided by the fair market value of the Company’s common stock. For the years ended December 31, 2022, 2021, 2020, $0, December 31, 2022 2020, December 31, 2022 2021, A summary of the activity of the Company’s stock options and awards for the period beginning January 1, 2020 December 31, 2022 Weighted Average Options Exercise Price Outstanding at January 1, 2020 50,000 $ 14.05 Granted 24,000 $ 11.56 Exercised - $ - Canceled, forfeited, or expired (30,000 ) $ 13.99 Outstanding at December 31, 2020 44,000 $ 12.73 Granted - $ - Exercised (20,000 ) $ 11.56 Canceled, forfeited, or expired - $ - Outstanding at December 31, 2021 24,000 $ 13.71 Granted 20,000 $ 7.18 Exercised - $ - Canceled, forfeited, or expired - $ - Outstanding at December 31, 2022 44,000 $ 10.74 There were 4,310,167 options available for grant under the Incentive Plan. The following table provides the remaining contractual term and weighted average exercise prices of stock options outstanding and exercisable from the Incentive Plan at December 31, 2022. Options Outstanding Options Exercisable Weighted Number Average Weighted Number Weighted Outstanding at Remaining Average Exercisable at Average Exercise December 31, Contractual Exercise December 31, Exercise Price 2022 Life Price 2021 Price $ 16.21 10,000 0.81 $ 16.21 10,000 $ 16.21 $ 12.07 10,000 1.71 $ 12.07 10,000 $ 12.07 $ 11.56 4,000 2.06 $ 11.56 4,000 $ 11.56 $ 7.18 20,000 4.61 $ 7.18 20,000 $ 7.18 44,000 2.86 $ 10.74 44,000 $ 10.74 The aggregate intrinsic values of total options outstanding and exercisable at December 31, 2022 2021 December 31, 2022 2021,

Note 18 - Stockholders' Equity

Note 18 - Stockholders' Equity	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	18 Stockholders’ equity St. Albans Global Management, LLC (“St. Albans”), an entity affiliated with Mr. P. A. Novelly II, a member of the board, is entitled to demand that the Company register under the Securities Act of 1933,

Note 19 - Employee Benefit Plan

Note 19 - Employee Benefit Plans	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Retirement Benefits [Text Block]	19 Employee benefit plans Defined contribution savings plan The Company currently offers its employees a company 401 December 31, 2022, 2021, 2020,

Note 20 - Related Party Transac

Note 20 - Related Party Transactions	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	20 Related party transactions The Company enters into transactions with companies affiliated with or controlled by a director or significant stockholder. Revenues, expenses, accounts receivable, prepaid amounts, and unpaid amounts related to these transactions are captured on the consolidated financial statements as related party line items. These related party transactions are summarized in the following table and further described below. Related party balance sheet accounts 2022 2021 Accounts receivable Biodiesel, petrodiesel, blends and other petroleum products $ 6 $ 58 Total accounts receivable $ 6 $ 58 Prepaid expenses Administrative services and other $ 12 $ 4 Total prepaid expenses $ 12 $ 4 Accounts payable Natural gas and fuel purchases $ 7,788 $ 7,900 Travel and administrative services $ 11 $ 11 Total accounts payable $ 7,799 $ 7,911 Accrued liabilities Travel and administrative services $ 1 $ 1 Total accrued liabilities $ 1 $ 1 Related party income statement accounts For the years ended December 31: 2022 2021 2020 Revenues Biodiesel, petrodiesel, blends and other petroleum products $ 459 $ 1,261 $ 1,976 Total revenues $ 459 $ 1,261 $ 1,976 Cost of goods sold Biodiesel, petrodiesel, blends, and other petroleum products $ 5,425 $ 5,233 $ 3,865 Natural gas purchases - 11,360 3,025 Total cost of goods sold $ 5,425 $ 16,593 $ 6,890 Distribution Distribution and related services $ 174 $ 176 $ 177 Total distribution $ 174 $ 176 $ 177 Selling, general and administrative expenses Commodity trading advisory fees $ 307 $ 308 $ 308 Travel and administrative services 184 221 192 Income tax, consulting services and other 120 120 120 Total selling, general, and administrative expenses $ 611 $ 649 $ 620 Biodiesel, petrodiesel, blends, and other petroleum products The Company enters into agreements to buy and sell biofuels (biodiesel, petrodiesel, biodiesel/petrodiesel blends, RINs, and biodiesel production byproducts) and other petroleum products, such as gasoline, with an affiliate from time to time. Such agreements are priced at the then-current market price of the product as determined from bids from other customers and/or market pricing services. Cost of goods sold related to these sales includes variable costs and allocated fixed costs. The revenue amounts presented in the table above result when the Company sells biodiesel, petrodiesel, blends, and other petroleum products to a related party regardless of who the material was purchased from. Likewise, cost of goods sold amounts result when biodiesel, petrodiesel, blends, and other petroleum products are purchased from a related party regardless of who the material was sold to. Natural gas purchases The Company uses natural gas to generate steam for its manufacturing process and to support certain of its air and waste treatment utilities. This natural gas is purchased through an affiliate provider of natural gas marketing services. Expenses related to these purchases include the cost of the natural gas only; transportation charges are paid to an independent third 23, not Distribution and related services The Company leases oil storage capacity from an affiliate under a storage and throughput agreement. This agreement provides for the storage of biodiesel, diesel or biodiesel/petrodiesel blends, methanol, and biodiesel feedstocks in above-ground storage tankage at designated facilities of the affiliate. Expenses related to this agreement include monthly lease charges, generally on a per-barrel basis, and associated heating, throughput, and other customary terminalling charges. Commodity trading advisory fees The Company entered into a commodity trading advisory agreement with an affiliate. Pursuant to the terms of this agreement, the affiliate provides advice to the Company concerning the purchase, sale, exchange, conversion, and/or hedging of commodities as requested from time to time. Travel and administrative services The Company reimburses an affiliate for legal, trading, travel and other administrative services incurred on its behalf. Such reimbursement is performed at cost with the affiliate realizing no Income tax and consulting services An affiliate provides professional services to the Company, primarily in the area of income tax preparation and consulting. The Company also receives certain finance and accounting expertise from this affiliate as requested. Expenses related to these services comprise an agreed quarterly fee plus reimbursement of expense, at cost and are reported as selling, general, and administrative expenses.

Note 21 - Segment Information

Note 21 - Segment Information	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	21 Segment information The Company has two reportable segments organized along similar product lines – chemicals and biofuels. The accounting policies of the segments are the same as those described in the summary of significant accounting policies in Note 2. Chemicals The Company’s chemicals segment manufactures diversified chemical products that are sold to third Biofuels The Company’s biofuels segment manufactures and markets biodiesel. Biodiesel revenues are generated through the sale of biodiesel to customers through the Company’s distribution network at the Batesville plant, through distribution facilities available at leased oil storage facilities, and through a network of remotely located tanks. Results of the biofuels business segment also reflect the sale of biodiesel blends with petrodiesel, petrodiesel with no Summary of business by segment Twelve months ended December 31, 2022 2021 2020 Revenue Custom chemicals $ 58,737 $ 50,675 $ 63,894 Performance chemicals 22,156 16,867 15,284 Chemicals revenue 80,893 67,542 79,178 Biofuels revenue 315,121 253,844 125,327 Total Revenue $ 396,014 $ 321,386 $ 204,505 Segment gross profit Chemicals $ 25,645 $ 13,970 $ 25,518 Biofuels 3,348 9,567 5,789 Total gross profit $ 28,993 $ 23,537 $ 31,307 Depreciation is allocated to segment cost of goods sold based on plant usage. The total assets and capital expenditures of the Company have not

Note 22 - Quarterly Financial I

Note 22 - Quarterly Financial Information (Unaudited)	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Quarterly Financial Information [Text Block]	22 Quarterly financial information (unaudited) Quarter 1st 2nd 3rd 4th 2022 Revenues $ 42,261 $ 117,796 $ 118,141 $ 117,816 Gross (loss) profit $ (7,155 ) $ 977 $ 19,985 $ 15,186 Net (loss) income $ (12,398 ) $ (3,104 ) $ 15,780 $ 14,933 Net income per common share: Basic $ (0.28 ) $ (0.07 ) $ 0.36 $ 0.34 Diluted $ (0.28 ) $ (0.07 ) $ 0.36 $ 0.34 2021 Revenues $ 41,516 $ 74,118 $ 98,682 $ 107,070 Gross (loss) profit $ (10,736 ) $ (43 ) $ 8,192 $ 26,124 Net (loss) income $ (8,773 ) $ 3,481 $ 9,202 $ 22,345 Net income per common share: Basic $ (0.20 ) $ 0.08 $ 0.21 $ 0.51 Diluted $ (0.20 ) $ 0.08 $ 0.21 $ 0.51 Earnings per share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly amounts will not

Note 23 - Legal Proceedings

Note 23 - Legal Proceedings	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Legal Matters and Contingencies [Text Block]	23 Legal proceedings The Company is not may not As a result of the extraordinary increase in natural gas prices in February 2021, February 2021 The natural gas expense was a component of Cost of goods sold-related parties in the Consolidated Statements of Operations and Comprehensive Income in the period ended December 31, 2021. 21, not

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Financial Presentation The consolidated financial statements of FutureFuel Corp. and subsidiaries are prepared in conformity with accounting principles generally accepted (“GAAP”) in the United States and include amounts that are based upon management estimates and judgments which could differ from actual future results. Intercompany transactions and balances are eliminated in consolidation. Certain reclassifications were made to prior year amounts to conform to the 2022
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and cash equivalents Cash equivalents consist of highly liquid investments with original maturities of three may
Receivable [Policy Text Block]	Accounts receivable, allowance for doubtful accounts, and credit risk Accounts receivable are recorded at the invoiced amount and only bear interest if outstanding beyond the agreed upon payment terms. The Company has established procedures to monitor credit risk and has not may The Company adopted Accounting Standards Update (“ASU’) 2016 13, Financial Instruments - Credit Losses, Measurement of Credit Losses on Financial Instruments on January 1, 2020 not
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Customer concentrations For the twelve December 31, 2022, 2021, 2020, two 2022. three 2021 one 2020. December 31, 2022 2021, No 10% 2022, 2021, 2020.
Inventory, Policy [Policy Text Block]	Inventory Inventories are valued at the lower of cost or market. The Company determines the cost of raw materials, work in process, and finished goods inventories by the last-in, first first first
Derivatives, Policy [Policy Text Block]	Derivative instruments The Company records all derivative instruments at fair value. Fair value is determined by using the closing prices of the derivative instruments on the New York Mercantile Exchange at the end of an accounting period. Changes in the fair value of derivative instruments are recognized at the end of each accounting period and recorded in the statement of income as a component of cost of goods sold. In order to manage commodity price risk caused by market fluctuations in biofuel prices, future purchases of feedstock used in biodiesel production, physical feedstock, finished product inventories attributed to the process, and other petroleum products purchased or sold, the Company may 815 20 25, Derivatives and Hedging no 2022 2021.
Marketable Securities, Policy [Policy Text Block]	Marketable securities Investments consist of marketable equity and debt securities stated at fair value. The debt securities are designated as available-for-sale securities at the time of purchase based upon the intended holding period. Gains and losses from the sale of marketable securities and the changes in the fair value of equity securities are recognized as “gains (losses) on marketable securities” as a component of other income (expense) in the consolidated statements of income and comprehensive income. The cost basis used for all marketable securities is specific identification. Changes in the fair value of debt securities are recognized in “accumulated other comprehensive income” on the consolidated balance sheets, unless the Company determines that an unrealized loss will not See Notes 7 8
Fair Value Measurement, Policy [Policy Text Block]	Fair value measurements The Company records recurring and non-recurring financial assets and liabilities as well as all non-financial assets and liabilities subject to fair value measurement at the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. These fair value principles prioritize valuation inputs across three 1 2 3
Property, Plant and Equipment, Policy [Policy Text Block]	Property, plant and equipment Property, plant, and equipment is carried at cost. Maintenance and repairs are charged to earnings; replacements and betterments are capitalized. When the Company retires or otherwise disposes of an asset, it removes the cost of such asset and related accumulated depreciation from the accounts. The Company records any profit and loss on retirement or other disposition in earnings. Depreciation expense is calculated based on historical cost and the estimated useful lives of the assets, generally using the straight-line method with the following useful lives: Building & building equipment (years) 20 – 39 Machinery and equipment (years) 3 – 33 Transportation equipment (years) 5 – 33 Other (years) 5 – 33
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Impairment of assets The Company evaluates the carrying value of long-lived tangible assets when events or changes in circumstances indicate that the carrying value may not not
Asset Retirement Obligation [Policy Text Block]	Asset retirement obligations and environmental costs The Company establishes reserves for closure/post-closure costs associated with the environmental and other assets it maintains, which include, but are not Environmental costs are capitalized if they extend the life of the related property, increase its capacity, and/or mitigate or prevent future contamination. The cost of operating and maintaining environmental control facilities is charged to expense.
Commitments and Contingencies, Policy [Policy Text Block]	Litigation The Company and its operations from time to time may
Revenue from Contract with Customer [Policy Text Block]	Revenue recognition In accordance with ASC Topic 606, Revenue from Contracts with Customers 30 75 2 10 The Company applies the practical expedient and excludes the value of unsatisfied performance obligations for (i) contracts with an original expected length of one Revenue within the biofuel segment includes revenue from biodiesel RINs. RINs are renewable identification numbers under the Renewable Fuel Standard ( “RFS2” 1.5 No Taxes collected from customers remitted to governmental authorities are excluded from revenue. Shipping and handling fees related to sales transactions are billed to customers and recorded as sales revenue.
Cost of Goods and Service [Policy Text Block]	Cost of goods sold and distribution Cost of goods sold consists of raw and packaging materials, direct manufacturing costs, depreciation, analytical lab costs, inbound freight, purchasing, and other indirect costs necessary to manufacture products. Biodiesel cost of goods sold also includes a credit for the one 2021 2022 December 31, 2024. 3 Distribution expense includes outbound freight costs, depreciation of distribution equipment, and other indirect costs necessary to distribute product.
Selling, General and Administrative Expenses, Policy [Policy Text Block]	Selling, general, and administrative expenses Selling, general, and administrative expenses include personnel costs associated with sales, marketing, and administration; legal and related costs; consulting and professional service fees; advertising expenses; and other similar costs.
Research and Development Expense, Policy [Policy Text Block]	Research and development expenses Research and development expenses include direct salaries, depreciation of equipment, material expenditures, contractor fees, and other indirect costs. All costs identified as research and development costs are charged to expense when incurred.
Comprehensive Income, Policy [Policy Text Block]	Comprehensive income Comprehensive income is comprised of net income and other comprehensive income (loss) (“OCI”). Comprehensive income comprises all changes in stockholders’ equity from transactions and other events and circumstances from non-owner sources. The Company’s OCI comprises unrealized gains and losses resulting from its investments in marketable debt securities classified as available-for-sale (see Note 7 Unrealized gains and losses are determined using the specific identification method and are classified in OCI.
Income Tax, Policy [Policy Text Block]	Income taxes The income tax (benefit) provision is determined using the asset and liability approach of accounting for income taxes. Under this approach, deferred taxes represent the future tax consequences expected to occur when the reported amounts of assets and liabilities are recovered or paid. The provision for (benefit from) income taxes represents income taxes paid or payable for the current year plus the change in deferred taxes during the year. Deferred taxes result from differences between the financial and tax bases of the Company’s assets and liabilities and are adjusted for changes in tax rates and tax laws when changes are enacted. A tax valuation allowance is recognized if it is more likely than not not not three no
New Accounting Pronouncements, Policy [Policy Text Block]	Recently adopted accounting standards None. Recently issued accounting pronouncements Reference Rate Reform (ASU No. 2020 04 In March 2020, January 1, 2020 December 31, 2022. December 2024.

Note 2 - Significant Accounti_2

Note 2 - Significant Accounting Policies and Basis of Presentation (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Property Plant And Equipment Estimated Useful Lives [Table Text Block]	Building & building equipment (years) 20 – 39 Machinery and equipment (years) 3 – 33 Transportation equipment (years) 5 – 33 Other (years) 5 – 33

Note 4 - Revenue Recognition (T

Note 4 - Revenue Recognition (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]	Contract Assets and Liabilities December 31, 2022 2021 Trade receivables, included in accounts receivable* $ 16,459 $ 20,780 Contract assets, included in accounts receivable 775 362 Contract liabilities, included in Deferred revenue - short-term 3,565 5,944 Contract liabilities, included in Deferred revenue - long-term 11,605 13,059
Disaggregation of Revenue [Table Text Block]	Disaggregation of revenue - contractual and non-contractual Twelve months ended December 31, 2022 2021 Contract revenue from customers with > 1-year arrangement $ 33,686 $ 25,918 Contract revenue from customer with < 1-year arrangement 362,106 295,246 Revenue from non-contractual arrangements 222 222 Total revenue $ 396,014 $ 321,386 Timing of revenue Twelve months ended December 31, 2022 2021 Bill-and-hold revenue $ 36,805 $ 34,695 Non-bill-and-hold revenue 359,209 286,691 Total revenue $ 396,014 $ 321,386
Revenue from External Customers by Geographic Areas [Table Text Block]	Twelve months ended December 31: 2022 2021 2020 United States $ 394,671 $ 320,148 $ 203,365 All Foreign Countries 1,343 1,238 1,140 Total $ 396,014 $ 321,386 $ 204,505

Note 5 - Inventory (Tables)

Note 5 - Inventory (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Inventory, Current [Table Text Block]	2022 2021 At average cost (approximates current cost) Finished goods $ 11,719 $ 12,132 Work in process 879 462 Raw and indirect materials 33,897 30,117 46,495 42,711 LIFO reserve (19,734 ) (15,791 ) Total inventory $ 26,761 $ 26,920

Note 6 - Derivative Instrumen_2

Note 6 - Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Derivative Instruments [Table Text Block]	Asset/ (Liability) 2022 2021 Contract Quantity Fair Value Contract Quantity Fair Value Regulated fixed price future commitments, included in other current assets (in thousand barrels) 305 $ (142 ) 142 $ (485 )

Note 9 - Property, Plant, and_2

Note 9 - Property, Plant, and Equipment (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Property, Plant and Equipment [Table Text Block]	2022 2021 Land and land improvements $ 5,923 $ 5,924 Buildings and building equipment 27,226 27,229 Machinery and equipment 183,999 180,498 Construction in progress 771 1,024 Accumulated depreciation (140,978 ) (131,774 ) Total $ 76,941 $ 82,901

Note 11 - Accrued Expenses an_2

Note 11 - Accrued Expenses and Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Accrued Liabilities [Table Text Block]	2022 2021 Accrued employee liabilities $ 3,287 $ 3,347 Accrued property, franchise, motor fuel and other taxes 1,165 1,912 Lease liability, current 630 644 Other 395 178 Total $ 5,477 $ 6,081

Note 12 - Borrowings (Tables)

Note 12 - Borrowings (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Long-Term Debt Instruments [Table Text Block]	Consolidated Leverage Ratio Adjusted SOFR Rate Loans and Letter of Credit Fee Base Rate Loans Commitment < 1.00:1.0 1.00% 0.00% 0.15% ≥ 1.00:1.0 And < 1.50:1.0 1.25% 0.25% 0.15% ≥ 1.50:1.0 And < 1.50:1.0 1.50% 0.50% 0.20% ≥ 2.00:1.0 And < 1.50:1.0 1.75% 0.75% 0.20% ≥ 2.50:1.0 2.00% 1.00% 0.25%

Note 14 - Lease Commitments a_2

Note 14 - Lease Commitments and Purchase Obligations (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Lease, Cost [Table Text Block]	Twelve Months Ended December 31, 2022 2021 2020 Operating lease expense $ 862 $ 887 $ 841 Short-term lease expense $ 31 $ 23 106 Cash paid for operating leases $ 862 $ 887 841 Right of use assets obtained in exchange for lease obligations $ 707 $ 269 442 Weighted average discount rate, per annum 5.2 % 3.6 % 3.7 %
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	2023 $ 667 2024 398 Total 1,065 Less: imputed interest 46 Present value of lease liabilities $ 1,019
Contractual Obligation, Fiscal Year Maturity [Table Text Block]	2023 $ 37 2024- 2026 80 Total $ 117

Note 15 - Income Tax (Benefit_2

Note 15 - Income Tax (Benefit) Provision (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	2022 2021 2020 Income before taxes - U.S. $ 13,738 $ 15,930 $ 31,778 Income tax provision: Federal Current 290 142 (14,234 ) Deferred (1,998 ) (10,417 ) 1,120 State and other Current 60 (13 ) 59 Deferred 175 (37 ) (1, 731 ) Total $ (1,473 ) $ (10,325 ) $ (14,786 )
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	2022 2021 2020 Amount computed using the statutory rate of 21% for 2022, 2021, and 2020 21.0 % 21.0 % 21.0 % Agri-biodiesel production credit (8.6 ) (7.4 ) (3.7 ) Federal BTC benefit (76.2 ) (75.2 ) (38.7 ) State BTC benefit (7.0 ) (8.9 ) (3.8 ) Credit for increasing research activities (1.0 ) (0.7 ) (0.5 ) Dividends received deduction (1.6 ) (1.6 ) (0.9 ) State income taxes, net 5.1 3.5 (0.5 ) State research credits (0.1 ) - (1.0 ) State rate change and other deferred adjustments 3.6 5.0 - Valuation allowance for deferred tax assets 53.8 - - CARES Act - - (17.4 ) Other 0.3 (0.5 ) (1.0 ) Income tax benefit (10.7 )% (64.8 )% (46.5 )%
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	2022 2021 Deferred tax assets Compensation $ 391 $ 427 Inventory reserves 601 685 Self-insurance 70 100 Asset retirement obligation 323 314 Deferred revenue 4,081 5,295 Federal net operating loss carryforwards 9,360 5,428 State net operating loss carryforwards 1,884 2,311 Accrued expenses 2,648 759 Stock based compensation 24 14 Federal credit carryforwards 5,216 3,598 State credit carryforwards 687 676 Research & development costs 749 - Derivative instruments 29 102 Capital loss carryforwards 1,241 1,084 Trading securities 656 - Other 96 - Intangible asset impairment - 168 Subtotal deferred tax assets 28,056 20,961 Valuation Allowance (7,392 ) - Total deferred tax assets 20,664 20,961 Deferred tax liabilities Available for sale securities - (47 ) LIFO inventory (2,740 ) (2,589 ) Depreciation (17,046 ) (18,266 ) Trading securities - (1,090 ) Prepaid expenses (878 ) (839 ) Total deferred tax liabilities (20,664 ) (22,831 ) Net deferred tax liabilities $ 0 $ (1,870 )

Note 16 - Earnings Per Share (T

Note 16 - Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	For the twelve months ended December 31: 2022 2021 2020 Numerator: Net income $ 15,211 $ 26,255 $ 46,564 Denominator: Weighted average shares outstanding – basic 43,763,243 43,756,065 43,743,243 Effect of dilutive securities: Stock options 246 48 907 Weighted average shares outstanding – diluted 43,763,489 43,756,113 43,744,150 Basic earnings per share $ 0.35 $ 0.60 $ 1.06 Diluted earnings per share $ 0.35 $ 0.60 $ 1.06

Note 17 - Stock-based Compens_2

Note 17 - Stock-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Assumptions 2022 Options 2021 Options January 2020 Options Expected volatility rate 56.61 % n/a 31.53 % Expected dividend yield 3.34 % n/a 2.08 % Risk-free interest rate 3.20 % n/a 1.60 % Expected forfeiture rate 0.00 % n/a 0.00 % Expected term in years 2.3 n/a 2.5
Share-Based Payment Arrangement, Option, Activity [Table Text Block]	Weighted Average Options Exercise Price Outstanding at January 1, 2020 50,000 $ 14.05 Granted 24,000 $ 11.56 Exercised - $ - Canceled, forfeited, or expired (30,000 ) $ 13.99 Outstanding at December 31, 2020 44,000 $ 12.73 Granted - $ - Exercised (20,000 ) $ 11.56 Canceled, forfeited, or expired - $ - Outstanding at December 31, 2021 24,000 $ 13.71 Granted 20,000 $ 7.18 Exercised - $ - Canceled, forfeited, or expired - $ - Outstanding at December 31, 2022 44,000 $ 10.74
Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block]	Options Outstanding Options Exercisable Weighted Number Average Weighted Number Weighted Outstanding at Remaining Average Exercisable at Average Exercise December 31, Contractual Exercise December 31, Exercise Price 2022 Life Price 2021 Price $ 16.21 10,000 0.81 $ 16.21 10,000 $ 16.21 $ 12.07 10,000 1.71 $ 12.07 10,000 $ 12.07 $ 11.56 4,000 2.06 $ 11.56 4,000 $ 11.56 $ 7.18 20,000 4.61 $ 7.18 20,000 $ 7.18 44,000 2.86 $ 10.74 44,000 $ 10.74

Note 20 - Related Party Trans_2

Note 20 - Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Condensed Balance Sheet [Table Text Block]	2022 2021 Accounts receivable Biodiesel, petrodiesel, blends and other petroleum products $ 6 $ 58 Total accounts receivable $ 6 $ 58 Prepaid expenses Administrative services and other $ 12 $ 4 Total prepaid expenses $ 12 $ 4 Accounts payable Natural gas and fuel purchases $ 7,788 $ 7,900 Travel and administrative services $ 11 $ 11 Total accounts payable $ 7,799 $ 7,911 Accrued liabilities Travel and administrative services $ 1 $ 1 Total accrued liabilities $ 1 $ 1
Condensed Income Statement [Table Text Block]	For the years ended December 31: 2022 2021 2020 Revenues Biodiesel, petrodiesel, blends and other petroleum products $ 459 $ 1,261 $ 1,976 Total revenues $ 459 $ 1,261 $ 1,976 Cost of goods sold Biodiesel, petrodiesel, blends, and other petroleum products $ 5,425 $ 5,233 $ 3,865 Natural gas purchases - 11,360 3,025 Total cost of goods sold $ 5,425 $ 16,593 $ 6,890 Distribution Distribution and related services $ 174 $ 176 $ 177 Total distribution $ 174 $ 176 $ 177 Selling, general and administrative expenses Commodity trading advisory fees $ 307 $ 308 $ 308 Travel and administrative services 184 221 192 Income tax, consulting services and other 120 120 120 Total selling, general, and administrative expenses $ 611 $ 649 $ 620

Note 21 - Segment Information (

Note 21 - Segment Information (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Twelve months ended December 31, 2022 2021 2020 Revenue Custom chemicals $ 58,737 $ 50,675 $ 63,894 Performance chemicals 22,156 16,867 15,284 Chemicals revenue 80,893 67,542 79,178 Biofuels revenue 315,121 253,844 125,327 Total Revenue $ 396,014 $ 321,386 $ 204,505 Segment gross profit Chemicals $ 25,645 $ 13,970 $ 25,518 Biofuels 3,348 9,567 5,789 Total gross profit $ 28,993 $ 23,537 $ 31,307

Note 22 - Quarterly Financial_2

Note 22 - Quarterly Financial Information (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Quarterly Financial Information [Table Text Block]	Quarter 1st 2nd 3rd 4th 2022 Revenues $ 42,261 $ 117,796 $ 118,141 $ 117,816 Gross (loss) profit $ (7,155 ) $ 977 $ 19,985 $ 15,186 Net (loss) income $ (12,398 ) $ (3,104 ) $ 15,780 $ 14,933 Net income per common share: Basic $ (0.28 ) $ (0.07 ) $ 0.36 $ 0.34 Diluted $ (0.28 ) $ (0.07 ) $ 0.36 $ 0.34 2021 Revenues $ 41,516 $ 74,118 $ 98,682 $ 107,070 Gross (loss) profit $ (10,736 ) $ (43 ) $ 8,192 $ 26,124 Net (loss) income $ (8,773 ) $ 3,481 $ 9,202 $ 22,345 Net income per common share: Basic $ (0.20 ) $ 0.08 $ 0.21 $ 0.51 Diluted $ (0.20 ) $ 0.08 $ 0.21 $ 0.51

Note 2 - Significant Accounti_3

Note 2 - Significant Accounting Policies and Basis of Presentation (Details Textual) $ in Thousands

3 Months Ended

12 Months Ended

Dec. 31, 2022 USD ($)

[1]

Sep. 30, 2022 USD ($)

Jun. 30, 2022 USD ($)

Mar. 31, 2022 USD ($)

Dec. 31, 2021 USD ($)

[1]

Sep. 30, 2021 USD ($)

Jun. 30, 2021 USD ($)

Mar. 31, 2021 USD ($)

Dec. 31, 2022 USD ($)

Dec. 31, 2021 USD ($)

Dec. 31, 2020 USD ($)

Revenue from Contract with Customer, Excluding Assessed Tax

$ 117,816

$ 118,141

$ 117,796

$ 42,261

$ 107,070

$ 98,682

$ 74,118

$ 41,516

$ 396,014

$ 321,386

$ 204,505

Environmental Assets [Member]

Property, Plant and Equipment, Useful Life (Year)

27 years

Biodiesel [Member] | Two Customers [Member]

Revenue from Contract with Customer, Excluding Assessed Tax

$ 107,898

Biodiesel [Member] | Three Customers [Member]

Revenue from Contract with Customer, Excluding Assessed Tax

$ 133,231

Biodiesel [Member] | One Customer [Member]

Revenue from Contract with Customer, Excluding Assessed Tax

$ 25,460

Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Chemicals [Member]

Number Of Major Customers

0

0

0

Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Biodiesel [Member]

Number Of Major Customers

2

3

Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Biodiesel [Member] | Two Customers [Member]

Concentration Risk, Percentage

27%

Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Biodiesel [Member] | Three Customers [Member]

Concentration Risk, Percentage

41%

Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Biodiesel [Member] | One Customer [Member]

Concentration Risk, Percentage

12%

Customer Concentration Risk [Member] | Accounts Receivable [Member] | Biodiesel [Member] | Two Customers [Member]

Concentration Risk, Percentage

2%

Customer Concentration Risk [Member] | Accounts Receivable [Member] | Biodiesel [Member] | Three Customers [Member]

Concentration Risk, Percentage

28%

[1]The fourth quarter of 2019 includes the retroactive reinstatement of the BTC in revenue and gross profit (see Note 3 for further information).

Note 2 - Significant Accounti_4

Note 2 - Significant Accounting Policies and Basis of Presentation - Estimated Useful Lives of Property, Plant, and Equipment (Details)	12 Months Ended
	Dec. 31, 2022
Building and Building Improvements [Member] | Minimum [Member]
Estimated useful life (Year)	20 years
Building and Building Improvements [Member] | Maximum [Member]
Estimated useful life (Year)	39 years
Machinery and Equipment [Member] | Minimum [Member]
Estimated useful life (Year)	3 years
Machinery and Equipment [Member] | Maximum [Member]
Estimated useful life (Year)	33 years
Transportation Equipment [Member] | Minimum [Member]
Estimated useful life (Year)	5 years
Transportation Equipment [Member] | Maximum [Member]
Estimated useful life (Year)	33 years
Other Capitalized Property Plant and Equipment [Member] | Minimum [Member]
Estimated useful life (Year)	5 years
Other Capitalized Property Plant and Equipment [Member] | Maximum [Member]
Estimated useful life (Year)	33 years

Note 3 - Government Tax Credi_2

Note 3 - Government Tax Credits (Details Textual) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)
Small Agri Biodiesel Producers Credit [Member]
Benefit From Tax Credit, Pretax	$ 1.5

Note 4 - Revenue Recognition 1

Note 4 - Revenue Recognition 1 (Details Textual) - USD ($) $ in Thousands	3 Months Ended										12 Months Ended
	Dec. 31, 2022		Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021		Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Increase (Decrease) in Contract with Customer, Liability											$ (4,055)	$ (2,931)	$ (691)
Contract with Customer, Liability, Revenue Recognized											5,816	3,824
Accounts Receivable, Blenders' Tax Credit	$ 8,970					$ 8,232					8,970	8,232
Accounts Receivable, Allowance for Credit Loss, Ending Balance	48					67					48	67
Revenue from Contract with Customer, Excluding Assessed Tax	117,816	[1]	$ 118,141	$ 117,796	$ 42,261	107,070	[1]	$ 98,682	$ 74,118	$ 41,516	396,014	321,386	204,505
Bill and Hold Arrangements [Member] | Four Customers [Member]
Revenue from Contract with Customer, Excluding Assessed Tax											36,805	34,695
Contract with Customer, Liability, Total	$ 4,473					$ 3,154					4,473	3,154
Bill and Hold Arrangements [Member] | Two Customers [Member]
Revenue from Contract with Customer, Excluding Assessed Tax													$ 32,779
Chemicals [Member]
Increase (Decrease) in Contract with Customer, Liability											$ 1,983	$ 1,114
[1]The fourth quarter of 2019 includes the retroactive reinstatement of the BTC in revenue and gross profit (see Note 3 for further information).

Note 4 - Revenue Recognition 2

Note 4 - Revenue Recognition 2 (Details Textual)	Dec. 31, 2022 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-12-31
Revenue, Remaining Performance Obligation, Percentage	76%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-12-31 | Minimum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Year)	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-12-31 | Maximum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Year)	4 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Amount	$ 15,170
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Year)	12 months
Revenue, Remaining Performance Obligation, Percentage	24%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Minimum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Year)	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Maximum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Year)	5 years

Note 4 - Revenue Recognition -

Note 4 - Revenue Recognition - Contract Assets and Liabilities (Details) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021
Trade receivables, included in accounts receivable*	[1]	$ 16,459	$ 20,780
Contract assets, included in accounts receivable		775	362
Contract liabilities, included in Deferred revenue - short-term		3,565	5,944
Contract liabilities, included in Deferred revenue - long-term		$ 11,605	$ 13,059
[1]Exclusive of the BTC of $12,679 and $8,300, respectively, and net of allowances for bad debt of $55 and $63, respectively, as of the dates noted.

Note 4 - Revenue Recognition _2

Note 4 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended										12 Months Ended
	Dec. 31, 2022	[1]	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	[1]	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue	$ 117,816		$ 118,141	$ 117,796	$ 42,261	$ 107,070		$ 98,682	$ 74,118	$ 41,516	$ 396,014	$ 321,386	$ 204,505
Revenue from non-contractual arrangements											222	222
Bill and Hold Revenue [Member]
Revenue											36,805	34,695
Non-bill and Hold Revenue [Member]
Revenue											359,209	286,691
Long-term Contract Revenue [Member]
Revenue											33,686	25,918
Short-term Contract Revenue [Member]
Revenue											$ 362,106	$ 295,246
[1]The fourth quarter of 2019 includes the retroactive reinstatement of the BTC in revenue and gross profit (see Note 3 for further information).

Note 4 - Revenue Recognition _3

Note 4 - Revenue Recognition - Revenues Based Upon the Billing Addresses of Customers (Details) - USD ($) $ in Thousands	3 Months Ended										12 Months Ended
	Dec. 31, 2022	[1]	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	[1]	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue	$ 117,816		$ 118,141	$ 117,796	$ 42,261	$ 107,070		$ 98,682	$ 74,118	$ 41,516	$ 396,014	$ 321,386	$ 204,505
UNITED STATES
Revenue											394,671	320,148	203,365
Non-US [Member]
Revenue											$ 1,343	$ 1,238	$ 1,140
[1]The fourth quarter of 2019 includes the retroactive reinstatement of the BTC in revenue and gross profit (see Note 3 for further information).

Note 5 - Inventory (Details Tex

Note 5 - Inventory (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Effect of LIFO Inventory Liquidation on Income	$ 2,124	$ 3,836

Note 5 - Inventory - Carrying V

Note 5 - Inventory - Carrying Values of Inventory (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Finished goods	$ 11,719	$ 12,132
Work in process	879	462
Raw and indirect materials	33,897	30,117
Inventory, gross	46,495	42,711
LIFO reserve	(19,734)	(15,791)
Total inventory	$ 26,761	$ 26,920

Note 6 - Derivative Instrumen_3

Note 6 - Derivative Instruments (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2012
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net, Total	$ (24,360)	$ (10,377)	$ 4,379
Restricted Cash and Cash Equivalents, Total	$ 2,088			$ 1,684

Note 6 - Derivative Instrumen_4

Note 6 - Derivative Instruments - Carrying Value of Derivative Instruments (Details) - Future [Member] Pure in Thousands, $ in Thousands	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Regulated fixed price future commitments, included in other current assets (in thousand barrels)	305	142
Regulated fixed price future commitments, included in other current assets (in thousand barrels)	$ (142)	$ (485)

Note 7 - Marketable Securities

Note 7 - Marketable Securities (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Marketable Securities, Total	$ 37,126	$ 47,190
Debt Securities, Available-for-Sale, Total	3,675	3,902
Debt Securities, Available-for-Sale, Unrealized Gain (Loss), Total	(1)	226
Equity Securities, FV-NI, Unrealized Gain (Loss), Total	(8,297)	(904)	$ (246)
Debt Securities, Available-for-sale, Realized Gain (Loss), Total	$ 0	$ 0	$ 99

Note 9 - Property, Plant, and_3

Note 9 - Property, Plant, and Equipment (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Depreciation, Total	$ 10,454	$ 10,452	$ 11,150

Note 9 - Property, Plant, and_4

Note 9 - Property, Plant, and Equipment - Property, Plant, and Equipment Summary (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Land and land improvements	$ 5,923	$ 5,924
Buildings and building equipment	27,226	27,229
Machinery and equipment	183,999	180,498
Construction in progress	771	1,024
Accumulated depreciation	(140,978)	(131,774)
Total	$ 76,941	$ 82,901

Note 10 - Other Assets (Details

Note 10 - Other Assets (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Other Assets, Noncurrent	$ 5,252	$ 5,596
Other Assets [Member]
Other Assets, Noncurrent	$ 4,114	$ 4,425

Note 11 - Accrued Expenses an_3

Note 11 - Accrued Expenses and Other Current Liabilities - Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Accrued employee liabilities	$ 3,287	$ 3,347
Accrued property, franchise, motor fuel and other taxes	1,165	1,912
Other	395	178
Total	5,477	6,081
Other Current Liabilities [Member]
Lease liability, current	$ 630	$ 644

Note 12 - Borrowings (Details T

Note 12 - Borrowings (Details Textual) - USD ($) $ in Thousands	Apr. 10, 2020	Mar. 30, 2020	Dec. 31, 2022	Dec. 31, 2021
Paycheck Protection Program, CARES Act [Member]
Proceeds from Issuance of Long-term Debt, Total	$ 8,180
Domestic Financing Company for Computer Technology [Member] | Secured Debt [Member]
Long-Term Debt, Total			$ 46	$ 86
Regions Bank and PNC Bank N.A. [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Expiration Period (Year)		5 years
Line of Credit Facility, Maximum Borrowing Capacity		$ 100,000
Line of Credit Facility Sublimit for Letters of Credit		30,000
Line of Credit Facility Swingline Loans		$ 15,000
Long-Term Line of Credit, Total			$ 0	$ 0

Note 12 - Borrowings - Leverage

Note 12 - Borrowings - Leverage Ratio (Details)	12 Months Ended
	Dec. 31, 2022
Leverage Ratio1 [Member]
Commitment Fee	0.15%
Leverage Ratio1 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Spread on variable rate	1%
Leverage Ratio1 [Member] | Base Rate [Member]
Spread on variable rate	0%
Leverage Ratio1 [Member] | Maximum [Member]
Leverage ratio	1
Leverage Ratio 2 [Member]
Commitment Fee	0.15%
Leverage Ratio 2 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Spread on variable rate	1.25%
Leverage Ratio 2 [Member] | Base Rate [Member]
Spread on variable rate	0.25%
Leverage Ratio 2 [Member] | Maximum [Member]
Leverage ratio	1.50
Leverage Ratio 2 [Member] | Minimum [Member]
Leverage ratio	1
Leverage Ratio 3 [Member]
Commitment Fee	0.20%
Leverage Ratio 3 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Spread on variable rate	1.50%
Leverage Ratio 3 [Member] | Base Rate [Member]
Spread on variable rate	0.50%
Leverage Ratio 3 [Member] | Maximum [Member]
Leverage ratio	2
Leverage Ratio 3 [Member] | Minimum [Member]
Leverage ratio	1.50
Leverage Ratio 4 [Member]
Commitment Fee	0.20%
Leverage Ratio 4 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Spread on variable rate	1.75%
Leverage Ratio 4 [Member] | Base Rate [Member]
Spread on variable rate	0.75%
Leverage Ratio 4 [Member] | Maximum [Member]
Leverage ratio	2.50
Leverage Ratio 4 [Member] | Minimum [Member]
Leverage ratio	2
Leverage Ratio 5 [Member]
Commitment Fee	0.25%
Leverage Ratio 5 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Spread on variable rate	2%
Leverage Ratio 5 [Member] | Base Rate [Member]
Spread on variable rate	1%
Leverage Ratio 5 [Member] | Minimum [Member]
Leverage ratio	2.50

Note 13 - Asset Retirement Ob_2

Note 13 - Asset Retirement Obligations and Environmental Reserves (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Asset Retirement Obligation, Ending Balance	$ 1,396	$ 1,363
Asset Retirement Obligation, Accretion Expense	32	32	$ 43
Asset Retirement Obligation, Revision of Estimate	$ 0	$ 0	$ 0

Note 14 - Lease Commitments a_3

Note 14 - Lease Commitments and Purchase Obligations (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Operating Lease, Weighted Average Remaining Lease Term (Year)	1 year 8 months 12 days
Other Noncurrent Assets [Member]
Operating Lease, Right-of-Use Asset	$ 1,109	$ 956
Operating Lease, Liability, Current	389	312
Other Current Liabilities [Member]
Operating Lease, Liability, Current	$ 630	$ 644
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)	1 year
Maximum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)	2 years

Note 14 - Lease Commitments a_4

Note 14 - Lease Commitments and Purchase Obligations - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating lease expense	$ 862	$ 887	$ 841
Short-term lease expense	31	23	106
Cash paid for operating leases	862	887	841
Noncash operating leases	$ 707	$ 269	$ 442
Weighted average discount rate, per annum	5.20%	3.60%	3.70%

Note 14 - Lease Commitments a_5

Note 14 - Lease Commitments and Purchase Obligations - Maturities of Lease Liabilities (Details) $ in Thousands	Dec. 31, 2022 USD ($)
2023	$ 667
2024	398
Total	1,065
Less: imputed interest	46
Other Current Liabilities and Other Noncurrent Liabilities [Member]
Present value of lease liabilities	$ 1,019

Note 14 - Lease Commitments a_6

Note 14 - Lease Commitments and Purchase Obligations - Payment Obligations (Details) $ in Thousands	Dec. 31, 2022 USD ($)
2023	$ 37
2024- 2026	80
Total	$ 117

Note 15 - Income Tax (Benefit_3

Note 15 - Income Tax (Benefit) Provision (Details Textual) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		12 Months Ended
	Jan. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Expense (Benefit), Total				$ (1,473)	$ (10,325)	$ (14,786)
Effective Income Tax Rate Reconciliation, Percent, Total				(10.70%)	(64.80%)	(46.50%)
Income Tax Examination, Refund Claim	$ 1,211	$ 8,463	$ 7,695
Income Tax Refund Claim, Outstanding				$ 2,299
Operating Loss Carryforward, Percent Limited to Taxable Income		80%			80%
Deferred Tax Assets, Valuation Allowance		$ 0		7,392	$ 0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total				(95)	(60)	$ 27
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total		$ 0		$ 0	$ 0
Open Tax Year				2019

Note 15 - Income Tax (Benefit_4

Note 15 - Income Tax (Benefit) Provision - Summary of Provisions for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income before taxes - U.S.	$ 13,738	$ 15,930	$ 31,778
Current	290	142	(14,234)
Deferred	(1,998)	(10,417)	1,120
Current	60	(13)	59
Deferred	175	(37)	(1,731)
Total	$ (1,473)	$ (10,325)	$ (14,786)

Note 15 - Income Tax (Benefit_5

Note 15 - Income Tax (Benefit) Provision - Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Amount computed using the statutory rate of 21% for 2022, 2021, and 2020	21%	21%	21%
Agri-biodiesel production credit	(8.60%)	(7.40%)	(3.70%)
Federal BTC benefit	(76.20%)	(75.20%)	(38.70%)
State BTC benefit	(7.00%)	(8.90%)	(3.80%)
Credit for increasing research activities	(1.00%)	(0.70%)	(0.50%)
Dividends received deduction	(1.60%)	(1.60%)	(0.90%)
State income taxes, net	5.10%	3.50%	(0.50%)
State research credits	(0.10%)	0%	(1.00%)
State rate change and other deferred adjustments	3.60%	5%	0%
Valuation allowance for deferred tax assets	53.80%	0%	0%
CARES Act	0%	0%	(17.40%)
Other	0.30%	(0.50%)	(1.00%)
Income tax benefit	(10.70%)	(64.80%)	(46.50%)

Note 15 - Income Tax (Benefit_6

Note 15 - Income Tax (Benefit) Provision - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Compensation	$ 391	$ 427
Inventory reserves	601	685
Self-insurance	70	100
Asset retirement obligation	323	314
Deferred revenue	4,081	5,295
Federal net operating loss carryforwards	9,360	5,428
State net operating loss carryforwards	1,884	2,311
Accrued expenses	2,648	759
Stock based compensation	24	14
Federal credit carryforwards	5,216	3,598
State credit carryforwards	687	676
Research & development costs	749	0
Derivative instruments	29	102
Capital loss carryforwards	1,241	1,084
Trading securities	656	0
Other	96	0
Intangible asset impairment	0	168
Subtotal deferred tax assets	28,056	20,961
Valuation Allowance	(7,392)	0
Total deferred tax assets	20,664	20,961
Available for sale securities	0	(47)
LIFO inventory	(2,740)	(2,589)
Depreciation	(17,046)	(18,266)
Trading securities	0	(1,090)
Prepaid expenses	(878)	(839)
Total deferred tax liabilities	(20,664)	(22,831)
Net deferred tax liabilities	$ 0	$ (1,870)

Note 16 - Earnings Per Share (D

Note 16 - Earnings Per Share (Details Textual) - shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-Based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	33,754	28,953	43,500

Note 16 - Earnings Per Share -

Note 16 - Earnings Per Share - Computation of Basic and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended										12 Months Ended
	Dec. 31, 2022	[1]	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	[1]	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net income	$ 14,933		$ 15,780	$ (3,104)	$ (12,398)	$ 22,345		$ 9,202	$ 3,481	$ (8,773)	$ 15,211	$ 26,255	$ 46,564
Weighted average shares outstanding – basic (in shares)											43,763,243	43,756,065	43,743,243
Stock options (in shares)											246	48	907
Weighted average shares outstanding – diluted (in shares)											43,763,489	43,756,113	43,744,150
Basic (in dollars per share)	$ 0.34		$ 0.36	$ (0.07)	$ (0.28)	$ 0.51		$ 0.21	$ 0.08	$ (0.20)	$ 0.35	$ 0.60	$ 1.06
Diluted (in dollars per share)	$ 0.34		$ 0.36	$ (0.07)	$ (0.28)	$ 0.51		$ 0.21	$ 0.08	$ (0.20)	$ 0.35	$ 0.60	$ 1.06
[1]The fourth quarter of 2019 includes the retroactive reinstatement of the BTC in revenue and gross profit (see Note 3 for further information).

Note 17 - Stock-based Compens_3

Note 17 - Stock-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended		12 Months Ended
	Sep. 07, 2017	Aug. 31, 2022	Jan. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum	10%
Share Based Compensation Arrangement By Share Based Payment Award Award Term (Year)	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period (in shares)				0	0	0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)				20,000	0	24,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)				$ 2.30		$ 2.05
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares)				0	20,000	0
Share-Based Payment Arrangement, Expense				$ 46	$ 0	$ 49
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount					0	0
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)				4,310,167
Restricted Stock [Member]
Share-Based Payment Arrangement, Expense, Tax Benefit					$ 19	$ 0
New Members of Board of Directors [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)		20,000	24,000

Note 17 - Stock-based Compens_4

Note 17 - Stock-based Compensation - Assumptions Used in the Determination of the Fair Value of the Options Granted (Details)	1 Months Ended	12 Months Ended
	Jan. 31, 2020	Dec. 31, 2022
January 2020 Options [Member]
Expected volatility rate		56.61%
Expected dividend yield		3.34%
Risk-free interest rate		3.20%
Expected forfeiture rate		0%
Expected term in years (Year)		2 years 3 months 18 days
October 2018 Options [Member]
Expected volatility rate	31.53%
Expected dividend yield	2.08%
Risk-free interest rate	1.60%
Expected forfeiture rate	0%
Expected term in years (Year)	2 years 6 months

Note 17 - Stock Based Compensat

Note 17 - Stock Based Compensation - Stock Option Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Outstanding (in shares)	24,000	44,000	50,000
Outstanding, weighted average exercise price (in dollars per share)	$ 13.71	$ 12.73	$ 14.05
Granted (in shares)	20,000	0	24,000
Granted, weighted average exercise price (in dollars per share)	$ 7.18	$ 0	$ 11.56
Exercised (in shares)	0	(20,000)	0
Exercised, weighted average exercise price (in dollars per share)	$ 0	$ 11.56	$ 0
Canceled, forfeited, or expired (in shares)	0	0	(30,000)
Canceled, forfeited, or expired, weighted average exercise price (in dollars per share)	$ 0	$ 0	$ 13.99
Outstanding (in shares)	44,000	24,000	44,000
Outstanding, weighted average exercise price (in dollars per share)	$ 10.74	$ 13.71	$ 12.73

Note 17 - Stock-based Compens_5

Note 17 - Stock-based Compensation - Stock Options Activities, by Exercise Price Range (Details)	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Number outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 10.74
Number outstanding (in shares) | shares	44,000
Number outstanding, weighted average remaining contractual life (Year)	2 years 10 months 9 days
Number exercisable (in shares) | shares	44,000
Number exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 10.74
Price Range 1 [Member]
Number outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 16.21
Number outstanding (in shares) | shares	10,000
Number outstanding, weighted average remaining contractual life (Year)	9 months 21 days
Number exercisable (in shares) | shares	10,000
Number exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 16.21
Price Range 2 [Member]
Number outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 12.07
Number outstanding (in shares) | shares	10,000
Number outstanding, weighted average remaining contractual life (Year)	1 year 8 months 15 days
Number exercisable (in shares) | shares	10,000
Number exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 12.07
Price Range3 [Member]
Number outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 11.56
Number outstanding (in shares) | shares	4,000
Number outstanding, weighted average remaining contractual life (Year)	2 years 21 days
Number exercisable (in shares) | shares	4,000
Number exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 11.56
Price Range4 [Member]
Number outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 7.18
Number outstanding (in shares) | shares	20,000
Number outstanding, weighted average remaining contractual life (Year)	4 years 7 months 9 days
Number exercisable (in shares) | shares	20,000
Number exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 7.18

Note 18 - Stockholders' Equity

Note 18 - Stockholders' Equity (Details Textual)	Dec. 31, 2022 shares
Number Of Shares Of Common Stock Subject To Registration Rights Agreement (in shares)	17,085,100
Additional Shares Available for Trading if Exercise Registration Rights (in shares)	6,637,600

Note 19 - Employee Benefit Pl_2

Note 19 - Employee Benefit Plans (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	6%
Defined Contribution Plan, Cost	$ 1,719	$ 1,770	$ 1,906

Note 20 - Related Party Trans_3

Note 20 - Related Party Transactions - Related Party Balance Sheet Accounts (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Accounts receivable – related parties	$ 6	$ 58
Prepaid expenses – related parties	12	4
Accounts payable – related parties	7,799	7,911
Accrued liabilities, related parties	1	1
Affiliated Entity [Member] | Administrative Servicesand Other [Member]
Prepaid expenses – related parties	12	4
Affiliated Entity [Member] | Travel and Administrative Services [Member]
Accounts payable – related parties	11	11
Accrued liabilities, related parties	1	1
Affiliated Entity [Member] | Biodiesel [Member]
Accounts receivable – related parties	6	58
Affiliated Entity [Member] | Natural Gas Purchases [Member]
Accounts payable – related parties	$ 7,788	$ 7,900

Note 20 - Related Party Trans_4

Note 20 - Related Party Transactions - Related Party Income Statement Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Biodiesel, petrodiesel, blends and other petroleum products	$ 459	$ 1,261	$ 1,976
Cost of goods sold, related parties	5,425	16,593	6,890
Distribution, related parties	174	176	177
Selling, general, and administrative expenses, related parties	611	649	620
Affiliated Entity [Member] | Biodeisel, Petrodiesel Blends, and Other Petroleum Products [Member]
Biodiesel, petrodiesel, blends and other petroleum products	459	1,261	1,976
Cost of goods sold, related parties	5,425	5,233	3,865
Affiliated Entity [Member] | Natural Gas Purchases [Member]
Cost of goods sold, related parties	0	11,360	3,025
Affiliated Entity [Member] | Distribution Related [Member]
Distribution, related parties	174	176	177
Affiliated Entity [Member] | Commodity Trading Advisory Fees [Member]
Selling, general, and administrative expenses, related parties	307	308	308
Affiliated Entity [Member] | Travel and Administrative Services [Member]
Selling, general, and administrative expenses, related parties	184	221	192
Affiliated Entity [Member] | Income Tax Consulting Services and Other [Member]
Cost of goods sold, related parties	$ 120	$ 120	$ 120

Note 21 - Segment Information_2

Note 21 - Segment Information (Details Textual)	12 Months Ended
	Dec. 31, 2022
Number of Reportable Segments	2
Chemicals [Member]
Number of Reportable Segments	2

Note 21 - Segment Information -

Note 21 - Segment Information - Summary of Business by Segment (Details) - USD ($) $ in Thousands	3 Months Ended										12 Months Ended
	Dec. 31, 2022	[1]	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	[1]	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue from Contract with Customer, Excluding Assessed Tax	$ 117,816		$ 118,141	$ 117,796	$ 42,261	$ 107,070		$ 98,682	$ 74,118	$ 41,516	$ 396,014	$ 321,386	$ 204,505
Gross profit	$ 15,186		$ 19,985	$ 977	$ (7,155)	$ 26,124		$ 8,192	$ (43)	$ (10,736)	28,993	23,537	31,307
Operating Segments [Member] | Chemicals [Member]
Revenue from Contract with Customer, Excluding Assessed Tax											80,893	67,542	79,178
Gross profit											25,645	13,970	25,518
Operating Segments [Member] | Chemicals [Member] | Custom Chemicals [Member]
Revenue from Contract with Customer, Excluding Assessed Tax											58,737	50,675	63,894
Operating Segments [Member] | Chemicals [Member] | Performance Chemicals [Member]
Revenue from Contract with Customer, Excluding Assessed Tax											22,156	16,867	15,284
Operating Segments [Member] | Biofuels [Member]
Revenue from Contract with Customer, Excluding Assessed Tax											315,121	253,844	125,327
Gross profit											$ 3,348	$ 9,567	$ 5,789
[1]The fourth quarter of 2019 includes the retroactive reinstatement of the BTC in revenue and gross profit (see Note 3 for further information).

Note 22 - Quarterly Financial_3

Note 22 - Quarterly Financial Information (Unaudited) - Quarterly Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended										12 Months Ended
	Dec. 31, 2022	[1]	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	[1]	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue from Contract with Customer, Excluding Assessed Tax	$ 117,816		$ 118,141	$ 117,796	$ 42,261	$ 107,070		$ 98,682	$ 74,118	$ 41,516	$ 396,014	$ 321,386	$ 204,505
Gross profit	15,186		19,985	977	(7,155)	26,124		8,192	(43)	(10,736)	28,993	23,537	31,307
Net income	$ 14,933		$ 15,780	$ (3,104)	$ (12,398)	$ 22,345		$ 9,202	$ 3,481	$ (8,773)	$ 15,211	$ 26,255	$ 46,564
Basic (in dollars per share)	$ 0.34		$ 0.36	$ (0.07)	$ (0.28)	$ 0.51		$ 0.21	$ 0.08	$ (0.20)	$ 0.35	$ 0.60	$ 1.06
Diluted (in dollars per share)	$ 0.34		$ 0.36	$ (0.07)	$ (0.28)	$ 0.51		$ 0.21	$ 0.08	$ (0.20)	$ 0.35	$ 0.60	$ 1.06
[1]The fourth quarter of 2019 includes the retroactive reinstatement of the BTC in revenue and gross profit (see Note 3 for further information).