FutureFuel (FF) 10-K 13 Mar 20 2019 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2019	Mar. 09, 2020	Jun. 30, 2019
Document Information [Line Items]
Entity Registrant Name	FUTUREFUEL CORP.
Entity Central Index Key	0001337298
Trading Symbol	ff
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Interactive Data Current	Yes
Entity Common Stock, Shares Outstanding (in shares)		43,743,243
Entity Public Float			$ 301,570,575
Entity Shell Company	false
Document Type	10-K
Document Period End Date	Dec. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false
Title of 12(b) Security	Common Stock

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 243,331	$ 214,972
Accounts receivable, inclusive of the blenders' tax credit of $97,295 and $0, and net of allowances for bad debt of $0	110,264	16,294
Accounts receivable – related parties	4,602	1,844
Inventory	37,573	39,296
Income tax receivable	8,062	6,858
Prepaid expenses	1,932	1,767
Prepaid expenses – related parties	12	12
Marketable securities	73,620	79,888
Other current assets	1,493	1,399
Total current assets	480,889	362,330
Property, plant and equipment, net	98,597	103,575
Intangible assets	1,408	1,408
Other assets	5,611	3,842
Total noncurrent assets	105,616	108,825
Total Assets	586,505	471,155
Liabilities and Stockholders’ Equity
Accounts payable, inclusive of the blenders' tax credit rebates due customers of $39,423 and $0	61,299	19,981
Accounts payable – related parties	1,255	1,689
Deferred revenue – current	5,237	4,581
Dividends payable	10,498	10,498
Accrued expenses and other current liabilities	4,410	2,742
Accrued expenses and other current liabilities – related parties	64
Total current liabilities	82,763	39,491
Deferred revenue – non-current	21,291	20,319
Other noncurrent liabilities	2,388	4,241
Noncurrent deferred income tax liability	12,965	18,026
Total noncurrent liabilities	36,644	42,586
Total liabilities	119,407	82,077
Commitments and contingencies:
Preferred stock, $0.0001 par value, 5,000,000 shares authorized, none issued and outstanding
Common stock, $0.0001 par value, 75,000,000 shares authorized, 43,743,243 issued and outstanding as of December 31, 2019 and 2018	4	4
Accumulated other comprehensive income	296	(20)
Additional paid in capital	282,166	282,145
Retained earnings	184,632	106,949
Total stockholders’ equity	467,098	389,078
Total Liabilities and Stockholders’ Equity	$ 586,505	$ 471,155

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounts receivable, blenders' tax credit	$ 97,295	$ 0
Accounts receivable, allowances for bad debt	0	0
Accounts payable, Blenders' Tax Credit Rebates	$ 39,423	$ 0
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)	43,743,243	43,743,243
Common stock, shares outstanding (in shares)	43,743,243	43,743,243

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue	$ 205,226	$ 291,018	$ 275,026
Gross profit	74,139	73,398	20,261
Selling, general, and administrative expenses
Compensation expense	3,028	3,809	4,153
Other expense	1,904	1,936	1,986
Related party expense	707	690	576
Research and development expenses	3,191	3,524	3,659
Total operating expenses	8,830	9,959	10,374
Income from operations	65,309	63,439	9,887
Interest and dividend income	10,050	9,183	7,809
Interest expense	(173)	(173)	(172)
Gain (loss) on marketable securities	4,619	(12,011)	(687)
Other expense	(10)	(261)	(188)
Other income (expense)	14,486	(3,262)	6,762
Income before income taxes	79,795	60,177	16,649
Income tax (benefit) provision	(8,386)	7,019	(6,862)
Net income	$ 88,181	$ 53,158	$ 23,511
Earnings per common share
Earnings per common share, basic (in dollars per share)	$ 2.02	$ 1.22	$ 0.54
Earnings per common share, diluted (in dollars per share)	$ 2.02	$ 1.22	$ 0.54
Weighted average shares outstanding
Weighted average shares outstanding, basic (in shares)	43,743,243	43,725,333	43,676,171
Weighted average shares outstanding, diluted (in shares)	43,744,676	43,731,192	43,685,579
Net income	$ 88,181	$ 53,158	$ 23,511
Other comprehensive income (loss) from unrealized net gains (losses) on available-for-sale debt securities	400	(229)	7,535
Income tax effect	(84)	49	(2,642)
Total unrealized gains (losses), net of tax	316	(180)	4,893
Comprehensive income	88,497	52,978	28,404
Non-related Parties [Member]
Revenue	202,048	286,949	273,144
Cost of goods sold	107,028	191,859	224,329
Non-related Parties [Member] | Shipping and Handling [Member]
Cost of goods sold	6,933	6,075	3,750
Related Parties [Member]
Revenue	3,178	4,069	1,882
Cost of goods sold	16,945	19,495	26,526
Related Parties [Member] | Shipping and Handling [Member]
Cost of goods sold	$ 181	$ 191	$ 160

Consolidated Statements of Cash

Consolidated Statements of Cash Flows $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Cash flows from operating activities
Net income	$ 88,181	$ 53,158	$ 23,511
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	12,087	11,227	11,645
Amortization of deferred financing costs	144	144	145
Benefit for deferred income taxes	(5,145)	(1,253)	(13,657)
Change in fair value of equity securities	(6,281)	13,238
Change in fair value of derivative instruments	(30)	(2,130)	2,170
Other than temporary impairment of marketable securities			814
Loss (gain) on the sale of investments	1,662	(1,227)	(127)
Stock based compensation	21	357	998
(Gain) loss on disposal of property and equipment	(11)	41	195
Noncash interest expense	29	28	27
Changes in operating assets and liabilities:
Accounts receivable	(93,970)	5,679	2,386
Accounts receivable – related parties	(2,758)	(1,679)	220
Inventory	1,723	4,458	8,339
Income tax receivable	(1,204)	79	13,571
Prepaid expenses	(165)	(107)	34
Accrued interest on marketable securities	(33)	(25)	16
Other assets	239	(317)	(9)
Accounts payable	41,453	1,243	(4,403)
Accounts payable - related parties	(434)	506	(71)
Accrued expenses and other current liabilities	1,087	274	60
Accrued expenses and other current liabilities – related parties	64		(142)
Deferred revenue	1,628	(1,258)	(4,215)
Other noncurrent liabilities	(3,649)	3,177	(2,160)
Net cash provided by operating activities	34,638	85,613	39,347
Cash flows from investing activities
Collateralization of derivative instruments	(111)	1,680	(1,901)
Purchase of marketable securities	(20,131)	(19,664)	(30,959)
Proceeds from the sale of marketable securities	31,419	48,235	23,254
Proceeds from the sale of property and equipment	13	22	4
Capital expenditures	(6,971)	(4,867)	(3,581)
Net cash provided by (used in) investing activities	4,219	25,406	(13,183)
Cash flows from financing activities
Minimum tax withholding on stock options exercised and awards vested		(176)	(121)
Payment of dividends	(10,498)	(10,498)	(110,688)
Net cash used in financing activities	(10,498)	(10,674)	(110,809)
Net change in cash and cash equivalents	28,359	100,345	(84,645)
Cash and cash equivalents at beginning of period	214,972	114,627	199,272
Cash and cash equivalents at end of period	243,331	214,972	114,627
Cash paid for interest
Cash paid for income taxes	2,372	9,182	55
Noncash investing and financing activities:
Noncash capital expenditures	207	420
Noncash operating leases	432
Noncash items incurred for dividends	$ 10,498	$ 10,498	$ 10,498

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	AOCI Attributable to Parent [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2016	43,749,970
Balance at Dec. 31, 2016	$ 4	$ 3,540	$ 281,087	$ 48,182	$ 332,813
Dividends				(10,498)	(10,498)
Stock-based compensation			998		998
Minimum tax withholdings on options and awards			(121)		(121)
Other comprehensive income		4,893			4,893
Net income				23,511	23,511
Balance (in shares) at Dec. 31, 2017	43,741,670
Balance at Dec. 31, 2017	$ 4	8,433	281,964	61,195	351,596
Dividends				(10,498)	(10,498)
Stock-based compensation			357		357
Minimum tax withholdings on options and awards			(176)		(176)
Other comprehensive income		(180)			(180)
Net income				53,158	53,158
Prior period adjustment: Change in accounting principles at Dec. 31, 2017		(8,273)		3,094	(5,179)
Balance - As adjusted (in shares) at Dec. 31, 2017	43,741,670
Balance - As adjusted at Dec. 31, 2017	$ 4	160	281,964	64,289	346,417
Stock-based compensation (in shares)	1,573
Balance (in shares) at Dec. 31, 2018	43,743,243
Balance at Dec. 31, 2018	$ 4	(20)	282,145	106,949	389,078
Dividends				(10,498)	(10,498)
Stock-based compensation			21		21
Other comprehensive income		316			316
Net income				88,181	88,181
Balance (in shares) at Dec. 31, 2019	43,743,243
Balance at Dec. 31, 2019	$ 4	$ 296	$ 282,166	$ 184,632	$ 467,098

Note 1 - Description of Busines

Note 1 - Description of Business and Operations	12 Months Ended
	Dec. 31, 2019
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, 2019
Notes to Financial Statements
Significant Accounting Policies [Text Block]	2 Significant accounting policies and basis of presentation Finan cial 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 2019 Cas h an d cas h 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 Accounts receivable also includes amounts from the retroactive reinstatement of the biodiesel blenders’ tax credit (“BTC”) passed in law in December 2019. 3 Custome r concentrations For the twelve December 31, 2019, 2018, 2017, one $22,351 11% 2019 two 2018 $57,198 20% 0% 5% December 31, 2019 2018, $38,917 14% 2017. One chemical customer and its affiliates, represented approximately 22%, 27%, 30% 11% 2019, 2018 2017, 3% 25% December 31, 2019 2018, not December 31, 2019 15% 2019 7% 14% 2018 2017 6% 5%, . 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 Derivativ e 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, Derivative s an d Hedging no 2019 2018. M arketable s ecurities 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 is other-than-temporary. If the Company determines that an unrealized loss is other-than-temporary, the Company recognizes the loss as a component of other income (expense). 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 , plan t an d 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 I ntangible assets Intangible assets are carried at cost. Amortization expense for definite-lived intangible assets is generally determined using a straight-line method over the estimated useful life of the asset. Impairmen t o f assets Long-live d tangibl e 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 Indefinite-live d intangibl e asset s Intangible assets with indefinite lives are not may not fourth not not no 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 27 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 the year ended December 31, 2017 605, Revenue Recognition not not Bill and hold transactions related to a few specialty chemical customers whereby revenue was recognized in accordance with contractual agreements based on product produced and readied for use. Sales were subject to written monthly purchase orders with the agreement that production was reasonable. The inventory was custom manufactured and stored at the customer's request and could not Taxes collected from customers and remitted to governmental authorities were excluded from revenue. Shipping and handling fees related to sales transactions were billed to customers and recorded as sales revenue. As of January 1, 2018, 2014 09, Revenue from Contracts with Customers 606” $6,900 December 31, 2017 605, Revenue Recognition 606, 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 a reduction for customer rebate amounts from the retroactive reinstatement of the BTC passed in law in December 2019. 3 “RFS2” 1.5 No The accounting policies for taxes collected from customers and shipping and handling fees did not 606. 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 not 2017. February 2018, 2017. December 2019, 2018 2019. 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 Realized gains and losses are determined using the specific identification method and are recognized in OCI. Incom e 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. Valuation allowances are recorded to reduce deferred tax assets when it is more likely than not not The Company recognizes income tax positions that meet the more likely than not Recently adopted accounting standards The Company adopted ASU 2016 01, Financial Instruments - Overall 825 10 Recognition and Measurement of Financial Assets and Financial Liabilities on January 1, 2019 no January 1, 2019 $13,139 $8,273 The FASB issued ASU 2016 02, Leases 842” 12 The Company adopted the new lease standard January 1, 2019 not $1,641 $370 $1,271, 15 Recently issued accounting standards not ASU 2019 12, Income Taxes 740 Simplifying the Accounting for Income Taxes December 2019, 740. -Exception to the incremental approach for intraperiod tax allocation; -Exceptions to accounting for basis differences when there are ownership changes in foreign investments; and -Exception in interim period income tax accounting for year-to-date losses that exceed anticipated losses. The ASU also improves financial statement preparers’ application of income tax-related guidance and simplifies GAAP for: -Franchise taxes that are partially based on income; -Transactions with a government that result in a step up in the tax basis of goodwill; -Separate financial statements of legal entities that are not -Enacted changes in tax laws in interim periods. The effective date is for annual periods beginning after December 15, 2020 740 ASU 2016 13, Financial Instruments - Credit Losses, Measurement of Credit Losses on Financial Instruments. June 2016, 2019 11, 2019 10, 2019 05, 2019 04. December 15, 2019. January 1, 2020,

Note 3 - Reinstatement of the B

Note 3 - Reinstatement of the Biodiesel Blenders' Tax Credit and Small Agri-biodiesel Producer Tax Credit	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Other Income and Other Expense Disclosure [Text Block]	3 Reinstatement of the biodiesel blenders' tax credit and small agri-biodiesel producer tax credit The BTC provides a one 0.1% The Bipartisan Budget Act of 2018 February 9, 2018, 2017. 2018, 2017 2018 $28,865. The Further Consolidated Appropriations Act of 2020 December 20, 2019, 2018 2019 December 31, 2022. 2019, 2019 2019 $57,872, $26,571 $31,301 2019 2018, 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 $ 1,500 2019, 2018 2017

Note 4 - Revenue Recognition

Note 4 - Revenue Recognition	12 Months Ended
	Dec. 31, 2019
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 Topic 606, 30 606. Contract Assets and Liabilities: Contract assets consist of unbilled amounts typically resulting from revenue recognized through bill-and-hold arrangements. The contract assets for 2019 2018 one $5,926 $5,823 2019 2018, $4,077 $6,504 2019 2018, 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, 2019 2018* Trade receivables, included in accounts receivable, net of allowances for bad debts of $0 * * $ 11,902 $ 15,496 Contract assets, included in accounts receivable 1,067 798 Contract liabilities, included in Deferred revenue - short-term 5,030 4,374 Contract liabilities, included in Deferred revenue - long-term 17,151 15,959 * Contract asset and contract liability balances at January 1, 2018 $505 $21,013, ** Ex clusive of the BTC of $97,29 5 and $0 , respectively, and net of allowances for bad debt of $ 0 as of the dates noted . Transaction price allocated to the remaining performance obligations As of December 31, 2019, $22,181 three seven 23% 12 77% one 7 2 Di sa ggregation of revenue - contractual and non-contractual Twelve months ended December 31, 2019 2018 Contract revenue from customers with > 1 year arrangements $ 40,156 $ 60,721 Contract revenue from customer with < 1 year arrangement 204,271 243,634 Revenue from non-contractual arrangements 222 222 BTC rebate (39,423 ) (13,559 ) Total revenue $ 205,226 $ 291,018 Timing of revenue Twelve months ended December 31, 2019 2018 Bill-and-hold revenue $ 51,700 $ 44,924 Non-bill-and-hold revenue 153,526 246,094 Total revenue $ 205,226 $ 291,018 Bill-and-hold transactions consisted of three 2019 2018, two 2017 not $51,700, $44,924, $17,517 December 31, 2019, 2018, 2017, December 31, 2019 2018, $3,255 $4,203, not not not The Company’s revenues for the years ended December 31, 2019, 2018, 2017 Twelve months ended December 31: 2019 2018 2017 United States $ 203,470 $ 289,019 $ 271,635 All Foreign Countries 1,756 1,999 3,391 Total $ 205,226 $ 291,018 $ 275,026 For the years ended December 31, 2019, 2018, 2017, no 1%

Note 5 - Inventory

Note 5 - Inventory	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Inventory Disclosure [Text Block]	5 Inventory The carrying values of inventory were as follows as of December 31: 2019 2018 At average cost (approximates current cost) Finished goods $ 22,564 $ 23,658 Work in process 2,768 2,100 Raw materials and supplies 20,121 23,909 45,453 49,667 LIFO reserve (7,880 ) (10,371 ) Total inventory $ 37,573 $ 39,296 There was no December 31, 2019 2018.

Note 6 - Derivative Instruments

Note 6 - Derivative Instruments	12 Months Ended
	Dec. 31, 2019
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 loss of $1,301, $633, $3,844 December 31, 2019, 2018, 2017, The volumes and carrying values of the Company’s derivative instruments were as follows at December 31: Asset/ (Liability) 2019 2018 C ontract Quantity Short Fair Value Contract Quantity Short Fair Value Regulated options, included in other current assets - $ - 100 $ (484 ) Regulated fixed price future commitments, included in other current assets 140 $ (267 ) 96 $ 187 The margin account maintained with a broker to collateralize these derivative instruments carried an account balance of $1,091 $980 December 31, 2019 2018,

Note 7 - Marketable Securities

Note 7 - Marketable Securities	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Cash, Cash Equivalents, and Marketable Securities [Text Block]	7 Marketable securities At December 31, 2019 2018, $73,620 $79,888, December 31, 2019 2018, 321, $6,281 $13,238 FutureFuel’s available-for-sale debt securities were comprised of the following at December 31, 2019 2018: December 31, 2019 Adjusted Cost Unrealized Gains Unrealized Losses Fair Value Trust preferred securities $ 3,676 $ 250 $ - $ 3,926 Exchange traded debt instruments 1,428 128 (3 ) 1,553 Total $ 5,104 $ 378 $ (3 ) $ 5,479 December 31, 2018 Adjusted Cost Unrealized Gains Unrealized Losses Fair Value Trust preferred securities $ 3,147 $ 21 $ (18 ) $ 3,150 Exchange traded debt instruments 1,428 37 (65 ) 1,400 Total $ 4,575 $ 58 $ (83 ) $ 4,550 The aggregate fair value of debt securities with unrealized losses totaled $151 $2,540 December 31, 2019 2018, December 31, 2019, $151 12 $3. In 2019, 2018, 2017, $0, $0, $248, As of December 31, 2019, $5,104 $5,479 10

Note 8 - Fair Value Measurement

Note 8 - Fair Value Measurements	12 Months Ended
	Dec. 31, 2019
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, 2019
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: 2019 2018 Land and land improvements $ 5,924 $ 5,929 Buildings and building equipment 27,244 27,021 Machinery and equipment 176,772 169,341 Construction in progress 646 2,643 Accumulated depreciation (111,989 ) (101,359 ) Total $ 98,597 $ 103,575 Depreciation expense totaled $12,087, $11,227, $11,645 December 31, 2019, 2018, 2017, Expenditures for planned major maintenance activities are recognized as expense as incurred.

Note 10 - Intangible Assets

Note 10 - Intangible Assets	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	10 Intangible assets In April 2015, $1,408. no $1,408 December 30, 2019 2018. 350, Intangibles - Goodwill and Other no

Note 11 - Other Assets

Note 11 - Other Assets	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Other Assets Disclosure [Text Block]	11 Other assets Other assets primarily comprise supplies and parts that have been held longer than 24 not twelve $4,054 $3,806 December 31, 2019 2018,

Note 12 - Accrued Expenses and

Note 12 - Accrued Expenses and Other Current Liabilities	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]	12 Accrued expenses and other current liabilities Accrued expenses and other current liabilities, consisted of the following at December 31: 2019 2018 Accrued employee liabilities $ 2,534 $ 1,253 Accrued property, franchise, motor fuel and other taxes 1,226 1,225 Lease liability, current 537 - Other 113 264 Total $ 4,410 $ 2,742

Note 13 - Borrowings

Note 13 - Borrowings	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Debt Disclosure [Text Block]	13 Borrowings On April 16, 2015, $150,000 May 25, 2016, $15,000. five $165,000, $30,000 $15,000 December 31, 2019, $1,617 The interest rate floats at the following margins over LIBOR or base rate based upon the leverage ratio from time to time: Consolidated Leverage Ratio Adjusted LIBOR Rate Loans and Letter of Credit Fee Base Rate Loans Commitment Fee < 1.00:1.0 1.25% 0.25% 0.15% ≥ 1.00:1.0 And < 1.50:1.0 1.50% 0.50% 0.20% ≥ 1.50:1.0 And < 2.00:1.0 1.75% 0.75% 0.25% ≥ 2.00:1.0 And < 2.50:1.0 2.00% 1.00% 0.30% ≥ 2.50:1.0 2.25% 1.25% 0.35% The terms of the Credit Facility contain certain covenants and conditions including a maximum consolidated leverage ratio, a minimum consolidated fixed charge coverage ratio, and a minimum liquidity requirement. The Company was in compliance with such covenants as of December 31, 2019. There were no December 31, 2019 2018. The Credit Facility is expected to be renewed for a five April 15, 2020 At December 31, 2019, $5,000 six

Note 14 - Asset Retirement Obli

Note 14 - Asset Retirement Obligations and Environmental Reserves	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Asset Retirement Obligation Disclosure [Text Block]	14 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 $1,288 $904 December 31, 2019 2018, 2019 2018 $ 28 $356 2019.

Note 15 - Lease Commitments and

Note 15 - Lease Commitments and Purchase Obligations	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Lessee, Operating Leases [Text Block]	15 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 five four not Following are supplemental income statement and cash flow information related to leases at December 31, 2019. Twelve Months Ended December 31, 2019 2018 Operating lease expense $ 576 $ 540 Short-term lease expense $ 171 $ - Cash paid for operating leases $ 576 $ 540 Right of use assets obtained in exchange for lease obligations $ 432 $ - Weighted average discount rate 4.4% per annum N/A On December 31, 2019, $1,557 $537 $1,020, Following are maturities of lease liabilities at December 31, 2019. 2020 $ 595 2021 389 2022 370 2023 318 2024 32 Total 1,704 Less: imputed interest (147 ) Present value of lease liabilities $ 1,557 Purchas e 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 2020 $ 37 2021-2023 111 2024-2025 74 2026 and later 6 Total $ 228

Note 16 - Income Tax (Benefit)

Note 16 - Income Tax (Benefit) Provision	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Income Tax Disclosure [Text Block]	16 Income tax (benefit) provision The following table summarizes the income tax provision (benefit): 2019 2018 2017 Income before taxes - U.S. $ 79,795 $ 60,177 $ 16,649 Income tax provision: Federal Current (2,811 ) 7,105 6,185 Deferred (4,006 ) (1,389 ) (12,632 ) State and other Current (430 ) 1,167 610 Deferred (1,139 ) 136 (1,025 ) Total $ (8,386 ) $ 7,019 $ (6,862 ) Differences between the income tax (benefit) provision computed using the U.S. federal statutory income tax rate were as follows: 2019 2018 2017 Amount computed using the statutory rate 21.0% 21.0% 35.0% Section 199 manufacturing deduction - - (0.5% ) Small Agri-biodiesel Producer Tax Credit (3.0% ) (1.6% ) - Federal BTC benefit (23.4% ) (12.9% ) - State BTC benefit (5.8% ) (3.3% ) - Credit for increasing research activities (0.2% ) (0.2% ) (0.8% ) Dividends received deduction (0.4% ) (0.6% ) (5.2% ) State income taxes, net 4.0% 4.2% 2.8% State research credits (0.9% ) - - State rate change impact (1.6% ) - - Tax expense recorded as an increase in unrecognized tax benefit - 5.3% 1.1% Tax Cuts and Jobs Act of 2017 impact - - (72.5% ) Other (0.2% ) (0.2% ) (1.1% ) Income tax (benefit) provision (10.5% ) 11.7% (41.2% ) The income tax benefit in 2019 10.5% $8,386 11.7% $7,019 2018 41.2% $6,862 2017. The Company’s effective tax rate for the year 2019 2018 2019, 2018 2019 December 20, 2019 December 31, 2022. fourth 2019 3 December 31, 2019, 2018, 2017. 2019 one The Company’s effective tax rate for the year 2018 $2,728, $2,804, $448 fourth 2018. 2018, 2017 not December 31, 2017) February 9, 2018. The Company’s effective tax rate for the year 2017 one 2017 35% 21% January 1, 2018. one $12,066 The significant components of deferred tax assets and liabilities were as follows as of December 31: 2019 2018 Deferred tax assets Compensation $ 267 $ 30 Inventory reserves 650 458 Self-insurance 103 63 Asset retirement obligation 199 209 Deferred revenue 4,427 5,015 Federal net operating loss carryforwards 3,121 1 State net operating loss carryforwards 363 - Accrued expenses 1,684 1,653 Stock-based compensation 41 108 State credit carryforwards 343 - Derivative instruments 56 - Other - 130 Total deferred tax assets 11,254 7,667 Deferred tax liabilities Available-for-sale securities, unrealized gains (79 ) - Derivative instruments - (86 ) LIFO inventory (2,860 ) (3,389 ) Depreciation (19,891 ) (22,010 ) Marketable securities, unrealized gains (1,334 ) - Other (55 ) (208 ) Total deferred tax liabilities (24,219 ) (25,693 ) Net deferred tax liabilities $ (12,965 ) $ (18,026 ) Based on technical guidance from Internal Revenue Service, the Company excludes the portion of the BTC not Net operating loss carryforwards reflect losses generated in 2019 $3,121 80% $363 2024. The following table summarizes the Company’s unrecognized tax positions. 2019 2018 2017 Balance at January 1 $ 2,804 $ - $ 2,056 Increases to tax positions taken in the current year - - - Increases to tax positions taken in a prior year - 2,804 - Decrease due to resolution of tax positions taken in a prior year (2,804 ) - (2,056 ) Balance at December 31 $ - $ 2,804 $ - The Company does not 12 The Company records interest and penalties, net, as a component of income tax (benefit) provision and had accrued interest and penalties of ( $557 $681 December 31, 2019 2018, $0 $598 December 31, 2019 2018, The Company and its subsidiaries file 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 2014 2014 2016 third 2019.

Note 17 - Earnings Per Share

Note 17 - Earnings Per Share	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Earnings Per Share [Text Block]	17 Earnings per share In the year ended December 31, 2019, two 2018 2017, two 260, Earnings per Share two two no December 31, 2019, 2018 2017. The Company had shares contingently issuable of 12,500 79,167 December 31, 2018 2017, not not no December 31, 2019. Basic and diluted earnings per common share were computed as follows: For the twelve months ended December 31: 2019 2018 2017 Numerator: Net income $ 88,181 $ 53,158 $ 23,511 Less: distributed earnings allocated to non-vested stock - - (6 ) Less: undistributed earnings allocated to non-vested restricted stock - (16 ) (21 ) Numerator for basic earnings per share $ 88,181 $ 53,142 $ 23,484 Effect of dilutive securities: Add: undistributed earnings allocated to non-vested restricted stock - 16 21 Less: undistributed earnings reallocated to non-vested restricted stock - (16 ) (21 ) Numerator for diluted earnings per share $ 88,181 $ 53,142 $ 23,484 Denominator: Weighted average shares outstanding – basic 43,743,243 43,725,333 43,676,171 Effect of dilutive securities: Stock options and other awards 1,433 5,859 9,408 Weighted average shares outstanding – diluted 43,744,676 43,731,192 43,685,579 Basic earnings per share $ 2.02 $ 1.22 $ 0.54 Diluted earnings per share $ 2.02 $ 1.22 $ 0.54 Certain options to purchase the Company’s common stock were not December 31, 2019, 2018 2017 35,000, 15,000, 7,500,

Note 18 - Stock Based Compensat

Note 18 - Stock Based Compensation	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	18 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 September 7, 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), 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 10% 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 stock-based options based upon the grant-date fair value over the requisite service period. No 2019, 2018 2017. In September 2019 October 2018, 10,000 2019 November 2024. 2018 October 2023.The $2.24 $3.64 2019 2018, No 2017. There were no 2019. All of the options exercised in 2018 30,896 7,531 $111 $65 In 2017, 8,300 $121. The assumptions used in the determination of the fair value of the options granted are provided in the following table: Assumptions October 2018 Options September 2019 Options Expected volatility rate 33.87% 31.28% Expected dividend yield 1.48% 1.99% Risk-free interest rate 2.86% 1.71% Expected forfeiture rate 0.00% 0.00% Expected term in years 2.7 2.6 The volatility rate for the options granted in 2019 2018 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, 2019, 2018, 2017, $21, $357, $998, December 31, 2019, 2018, 2017, December 31, 2019 2018, no A summary of the activity of the Company’s stock options and awards for the period beginning January 1, 2017 December 31, 2019 Weighted Average Options Exercise Price Outstanding at January 1, 2017 * 70,000 $ 12.48 Granted - $ - Exercised - $ - Canceled, forfeited, or expired - $ - Outstanding at December 31, 2017 70,000 $ 12.48 Granted 10,000 $ 16.21 Exercised (40,000 ) $ 11.34 Canceled, forfeited, or expired - $ - Outstanding at December 31, 2018 40,000 $ 14.55 Granted 10,000 $ 12.07 Exercised - $ - Canceled, forfeited, or expired - $ - Outstanding at December 31, 2019 50,000 $ 14.05 (*) Granted pursuant to the “Prior Plan”. There were 4,354,167 no December 31, 2019. December 31, 2019. 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 2019 Life Price 2019 Price $ 13.99 30,000 0.96 $ 13.99 30,000 $ 13.99 $ 16.21 10,000 3.81 $ 16.21 10,000 $ 16.21 $ 12.07 10,000 4.72 $ 12.07 10,000 $ 12.07 50,000 2.28 $ 14.05 50,000 $ 14.05 The aggregate intrinsic values of total options outstanding and exercisable at December 31, 2019 2018 $3 $56, December 31, 2019 2018, The following summarizes unvested restricted stock activity under the Prior Plan: Number of Weighted Average Weighted Restricted Grant Date Average Life Stock Fair Value Remaining Unvested as of January 1, 2017 133,334 $ 16.90 1.15 Granted - - - Vested 108,334 $ 16.85 - Forfeited - - - Unvested as of December 31, 2017 25,000 $ 17.09 0.67 Granted - - - Vested 25,000 $ 17.09 - Forfeited - - - Unvested as of December 31, 2018 - $ - - Granted - - - Vested - $ - - Forfeited - - - Unvested as of December 31, 2019 - $ - - In 2017, No. 2016 09, Compensation-Stock Compensation 718 2019, 2018, 2017. $0, $12, $31 December 31, 2019, 2018 2017,

Note 19 - Stockholders' Equity

Note 19 - Stockholders' Equity	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	19 Stockholders’ equity Mr. Paul A. Novelly, executive chairman of the board, or his affiliates are entitled to demand that the Company register under the Securities Act of 1933, 7,012,600

Note 20 - Employee Benefit Plan

Note 20 - Employee Benefit Plans	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Pension and Other Postretirement Benefits Disclosure [Text Block]	20 Employee benefit plans Defined contribution savings plan The Company currently offers its employees a company 401 6% $1,771, $1,801, $1,632 December 31, 2019, 2018, 2017,

Note 21 - Related Party Transac

Note 21 - Related Party Transactions	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	21 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. Relate d part y balanc e shee t accounts 2019 2018 Accounts receivable Biodiesel, petrodiesel, blends, and other petroleum products $ 4,602 $ 1,844 Total accounts receivable $ 4,602 $ 1,844 Prepaid expenses Administrative services and other $ 12 $ 12 Total prepaid expenses $ 12 $ 12 Accounts payable Natural gas and fuel purchases $ 867 $ 1,354 Travel and administrative services 388 335 Total accounts payable $ 1,255 $ 1,689 Accrued expenses and other current liabilities Travel and administrative services $ 64 $ - Total accrued liabilities $ 64 $ - Relate d part y income statement accounts For the years ended December 31: 2019 2018 2017 Revenues Biodiesel, petrodiesel, blends, and other petroleum products $ 3,178 $ 4,069 $ 1,882 Total revenues $ 3,178 $ 4,069 $ 1,882 Cost of goods sold Biodiesel, petrodiesel, blends, and other petroleum products $ 12,647 $ 13,985 $ 21,655 Natural gas purchases 4,298 5,510 4,871 Total cost of goods sold $ 16,945 $ 19,495 $ 26,526 Distribution Distribution and related services $ 181 $ 191 $ 160 Total distribution $ 181 $ 191 $ 160 Selling, general and administrative expenses Commodity trading advisory fees $ 307 $ 307 $ 307 Travel and administrative services 280 282 189 Income tax, consulting services, and other 120 101 80 Total selling, general, and administrative expenses $ 707 $ 690 $ 576 Biodiesel , petrodiese l, 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. Natura l ga s 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 Distributio n an d relate d services Distribution and related services comprise barge transportation and related unloading charges for petrodiesel that were arranged and paid for by an affiliate and subsequently rebilled to the Company. Additionally, 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. Commodit y tradin g advisor y 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. Trave l an d administrativ e 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 Incom e ta x an d consultin g 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 22 - Segment Information

Note 22 - Segment Information	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	22 Segment information The Company has two 2. Chemicals The Company’s chemicals segment manufactures diversified chemical products that are sold to third two 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 Summar y o f busines s b y segment Twelve months ended 2019 2018 2017 Revenue Custom chemicals $ 90,962 $ 97,746 $ 87,905 Performance chemicals 13,865 19,382 17,481 Chemicals revenue 104,827 117,128 105,386 Biofuels revenue 100,399 173,890 169,640 Total Revenue $ 205,226 $ 291,018 $ 275,026 Segment gross profit (loss) Chemicals $ 29,923 $ 33,986 $ 28,016 Biofuels 44,216 39,412 (7,755 ) Total gross profit $ 74,139 $ 73,398 $ 20,261 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 23 - Quarterly Financial I

Note 23 - Quarterly Financial Information (Unaudited)	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Quarterly Financial Information [Text Block]	23 Quarterly financial information (unaudited) Quarter 1st 2nd 3rd 4th 2019 Revenue $ 48,501 $ 70,864 $ 65,684 $ 20,177 * Gross profit $ 3,262 $ 3,270 $ 5,462 $ 62,145 * Net income $ 5,499 $ 3,687 $ 6,622 $ 72,373 Net income per common share: Basic $ 0.13 $ 0.08 $ 0.15 $ 1.65 Diluted $ 0.13 $ 0.08 $ 0.15 $ 1.65 2018 Revenue $ 55,747 * $ 88,336 $ 81,422 $ 65,513 Gross profit $ 37,507 * $ 8,271 $ 12,653 $ 14,967 Net income $ 35,826 $ 6,051 $ 9,445 $ 1,836 Net income per common share: Basic $ 0.82 $ 0.14 $ 0.22 $ 0.04 Diluted $ 0.82 $ 0.14 $ 0.22 $ 0.04 *The fourth 2019 first 2018 3 Earnings per share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly amounts will not

Note 24 - Legal Proceedings

Note 24 - Legal Proceedings	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Legal Matters and Contingencies [Text Block]	24 Legal proceedings The Company is not may not

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Finan cial 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 2019
Cash and Cash Equivalents, Policy [Policy Text Block]	Cas h an d cas h 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 Accounts receivable also includes amounts from the retroactive reinstatement of the biodiesel blenders’ tax credit (“BTC”) passed in law in December 2019. 3
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Custome r concentrations For the twelve December 31, 2019, 2018, 2017, one $22,351 11% 2019 two 2018 $57,198 20% 0% 5% December 31, 2019 2018, $38,917 14% 2017. One 22%, 27%, 30% 11% 2019, 2018 2017, 3% 25% December 31, 2019 2018, not December 31, 2019 15% 2019 7% 14% 2018 2017 6% 5%, .
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]	Derivativ e 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, Derivative s an d Hedging no 2019 2018.
Marketable Securities, Policy [Policy Text Block]	M arketable s ecurities 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 is other-than-temporary. If the Company determines that an unrealized loss is other-than-temporary, the Company recognizes the loss as a component of other income (expense). 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 , plan t an d 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
Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]	I ntangible assets Intangible assets are carried at cost. Amortization expense for definite-lived intangible assets is generally determined using a straight-line method over the estimated useful life of the asset.
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Impairmen t o f assets Long-live d tangibl e 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 Indefinite-live d intangibl e asset s Intangible assets with indefinite lives are not may not fourth not not no 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 27 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 the year ended December 31, 2017 605, Revenue Recognition not not Bill and hold transactions related to a few specialty chemical customers whereby revenue was recognized in accordance with contractual agreements based on product produced and readied for use. Sales were subject to written monthly purchase orders with the agreement that production was reasonable. The inventory was custom manufactured and stored at the customer's request and could not Taxes collected from customers and remitted to governmental authorities were excluded from revenue. Shipping and handling fees related to sales transactions were billed to customers and recorded as sales revenue. As of January 1, 2018, 2014 09, Revenue from Contracts with Customers 606” $6,900 December 31, 2017 605, Revenue Recognition 606, 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 a reduction for customer rebate amounts from the retroactive reinstatement of the BTC passed in law in December 2019. 3 “RFS2” 1.5 No The accounting policies for taxes collected from customers and shipping and handling fees did not 606.
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 not 2017. February 2018, 2017. December 2019, 2018 2019. 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 Realized gains and losses are determined using the specific identification method and are recognized in OCI.
Income Tax, Policy [Policy Text Block]	Incom e 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. Valuation allowances are recorded to reduce deferred tax assets when it is more likely than not not The Company recognizes income tax positions that meet the more likely than not
New Accounting Pronouncements, Policy [Policy Text Block]	Recently adopted accounting standards The Company adopted ASU 2016 01, Financial Instruments - Overall 825 10 Recognition and Measurement of Financial Assets and Financial Liabilities on January 1, 2019 no January 1, 2019 $13,139 $8,273 The FASB issued ASU 2016 02, Leases 842” 12 The Company adopted the new lease standard January 1, 2019 not $1,641 $370 $1,271, 15 Recently issued accounting standards not ASU 2019 12, Income Taxes 740 Simplifying the Accounting for Income Taxes December 2019, 740. -Exception to the incremental approach for intraperiod tax allocation; -Exceptions to accounting for basis differences when there are ownership changes in foreign investments; and -Exception in interim period income tax accounting for year-to-date losses that exceed anticipated losses. The ASU also improves financial statement preparers’ application of income tax-related guidance and simplifies GAAP for: -Franchise taxes that are partially based on income; -Transactions with a government that result in a step up in the tax basis of goodwill; -Separate financial statements of legal entities that are not -Enacted changes in tax laws in interim periods. The effective date is for annual periods beginning after December 15, 2020 740 ASU 2016 13, Financial Instruments - Credit Losses, Measurement of Credit Losses on Financial Instruments. June 2016, 2019 11, 2019 10, 2019 05, 2019 04. December 15, 2019. January 1, 2020,

Note 2 - Significant Accounti_2

Note 2 - Significant Accounting Policies and Basis of Presentation (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019
Notes Tables
Contract with Customer, Asset and Liability [Table Text Block]	Contract Assets and Liabilities December 31, 2019 2018* Trade receivables, included in accounts receivable, net of allowances for bad debts of $0 * * $ 11,902 $ 15,496 Contract assets, included in accounts receivable 1,067 798 Contract liabilities, included in Deferred revenue - short-term 5,030 4,374 Contract liabilities, included in Deferred revenue - long-term 17,151 15,959
Disaggregation of Revenue [Table Text Block]	Di sa ggregation of revenue - contractual and non-contractual Twelve months ended December 31, 2019 2018 Contract revenue from customers with > 1 year arrangements $ 40,156 $ 60,721 Contract revenue from customer with < 1 year arrangement 204,271 243,634 Revenue from non-contractual arrangements 222 222 BTC rebate (39,423 ) (13,559 ) Total revenue $ 205,226 $ 291,018 Timing of revenue Twelve months ended December 31, 2019 2018 Bill-and-hold revenue $ 51,700 $ 44,924 Non-bill-and-hold revenue 153,526 246,094 Total revenue $ 205,226 $ 291,018
Revenue from External Customers by Geographic Areas [Table Text Block]	Twelve months ended December 31: 2019 2018 2017 United States $ 203,470 $ 289,019 $ 271,635 All Foreign Countries 1,756 1,999 3,391 Total $ 205,226 $ 291,018 $ 275,026

Note 5 - Inventory (Tables)

Note 5 - Inventory (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Schedule of Inventory, Current [Table Text Block]	2019 2018 At average cost (approximates current cost) Finished goods $ 22,564 $ 23,658 Work in process 2,768 2,100 Raw materials and supplies 20,121 23,909 45,453 49,667 LIFO reserve (7,880 ) (10,371 ) Total inventory $ 37,573 $ 39,296

Note 6 - Derivative Instrumen_2

Note 6 - Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Schedule of Derivative Instruments [Table Text Block]	Asset/ (Liability) 2019 2018 C ontract Quantity Short Fair Value Contract Quantity Short Fair Value Regulated options, included in other current assets - $ - 100 $ (484 ) Regulated fixed price future commitments, included in other current assets 140 $ (267 ) 96 $ 187

Note 7 - Marketable Securities

Note 7 - Marketable Securities (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Marketable Securities [Table Text Block]	December 31, 2019 Adjusted Cost Unrealized Gains Unrealized Losses Fair Value Trust preferred securities $ 3,676 $ 250 $ - $ 3,926 Exchange traded debt instruments 1,428 128 (3 ) 1,553 Total $ 5,104 $ 378 $ (3 ) $ 5,479 December 31, 2018 Adjusted Cost Unrealized Gains Unrealized Losses Fair Value Trust preferred securities $ 3,147 $ 21 $ (18 ) $ 3,150 Exchange traded debt instruments 1,428 37 (65 ) 1,400 Total $ 4,575 $ 58 $ (83 ) $ 4,550

Note 9 - Property, Plant, and_2

Note 9 - Property, Plant, and Equipment (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Property, Plant and Equipment [Table Text Block]	2019 2018 Land and land improvements $ 5,924 $ 5,929 Buildings and building equipment 27,244 27,021 Machinery and equipment 176,772 169,341 Construction in progress 646 2,643 Accumulated depreciation (111,989 ) (101,359 ) Total $ 98,597 $ 103,575

Note 12 - Accrued Expenses an_2

Note 12 - Accrued Expenses and Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Schedule of Accrued Liabilities [Table Text Block]	2019 2018 Accrued employee liabilities $ 2,534 $ 1,253 Accrued property, franchise, motor fuel and other taxes 1,226 1,225 Lease liability, current 537 - Other 113 264 Total $ 4,410 $ 2,742

Note 13 - Borrowings (Tables)

Note 13 - Borrowings (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Schedule of Long-term Debt Instruments [Table Text Block]	Consolidated Leverage Ratio Adjusted LIBOR Rate Loans and Letter of Credit Fee Base Rate Loans Commitment Fee < 1.00:1.0 1.25% 0.25% 0.15% ≥ 1.00:1.0 And < 1.50:1.0 1.50% 0.50% 0.20% ≥ 1.50:1.0 And < 2.00:1.0 1.75% 0.75% 0.25% ≥ 2.00:1.0 And < 2.50:1.0 2.00% 1.00% 0.30% ≥ 2.50:1.0 2.25% 1.25% 0.35%

Note 15 - Lease Commitments a_2

Note 15 - Lease Commitments and Purchase Obligations (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Lease, Cost [Table Text Block]	Twelve Months Ended December 31, 2019 2018 Operating lease expense $ 576 $ 540 Short-term lease expense $ 171 $ - Cash paid for operating leases $ 576 $ 540 Right of use assets obtained in exchange for lease obligations $ 432 $ - Weighted average discount rate 4.4% per annum N/A
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	2020 $ 595 2021 389 2022 370 2023 318 2024 32 Total 1,704 Less: imputed interest (147 ) Present value of lease liabilities $ 1,557
Contractual Obligation, Fiscal Year Maturity [Table Text Block]	2020 $ 37 2021-2023 111 2024-2025 74 2026 and later 6 Total $ 228

Note 16 - Income Tax (Benefit_2

Note 16 - Income Tax (Benefit) Provision (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	2019 2018 2017 Income before taxes - U.S. $ 79,795 $ 60,177 $ 16,649 Income tax provision: Federal Current (2,811 ) 7,105 6,185 Deferred (4,006 ) (1,389 ) (12,632 ) State and other Current (430 ) 1,167 610 Deferred (1,139 ) 136 (1,025 ) Total $ (8,386 ) $ 7,019 $ (6,862 )
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	2019 2018 2017 Amount computed using the statutory rate 21.0% 21.0% 35.0% Section 199 manufacturing deduction - - (0.5% ) Small Agri-biodiesel Producer Tax Credit (3.0% ) (1.6% ) - Federal BTC benefit (23.4% ) (12.9% ) - State BTC benefit (5.8% ) (3.3% ) - Credit for increasing research activities (0.2% ) (0.2% ) (0.8% ) Dividends received deduction (0.4% ) (0.6% ) (5.2% ) State income taxes, net 4.0% 4.2% 2.8% State research credits (0.9% ) - - State rate change impact (1.6% ) - - Tax expense recorded as an increase in unrecognized tax benefit - 5.3% 1.1% Tax Cuts and Jobs Act of 2017 impact - - (72.5% ) Other (0.2% ) (0.2% ) (1.1% ) Income tax (benefit) provision (10.5% ) 11.7% (41.2% )
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	2019 2018 Deferred tax assets Compensation $ 267 $ 30 Inventory reserves 650 458 Self-insurance 103 63 Asset retirement obligation 199 209 Deferred revenue 4,427 5,015 Federal net operating loss carryforwards 3,121 1 State net operating loss carryforwards 363 - Accrued expenses 1,684 1,653 Stock-based compensation 41 108 State credit carryforwards 343 - Derivative instruments 56 - Other - 130 Total deferred tax assets 11,254 7,667 Deferred tax liabilities Available-for-sale securities, unrealized gains (79 ) - Derivative instruments - (86 ) LIFO inventory (2,860 ) (3,389 ) Depreciation (19,891 ) (22,010 ) Marketable securities, unrealized gains (1,334 ) - Other (55 ) (208 ) Total deferred tax liabilities (24,219 ) (25,693 ) Net deferred tax liabilities $ (12,965 ) $ (18,026 )
Summary of Income Tax Contingencies [Table Text Block]	2019 2018 2017 Balance at January 1 $ 2,804 $ - $ 2,056 Increases to tax positions taken in the current year - - - Increases to tax positions taken in a prior year - 2,804 - Decrease due to resolution of tax positions taken in a prior year (2,804 ) - (2,056 ) Balance at December 31 $ - $ 2,804 $ -

Note 17 - Earnings Per Share (T

Note 17 - Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	For the twelve months ended December 31: 2019 2018 2017 Numerator: Net income $ 88,181 $ 53,158 $ 23,511 Less: distributed earnings allocated to non-vested stock - - (6 ) Less: undistributed earnings allocated to non-vested restricted stock - (16 ) (21 ) Numerator for basic earnings per share $ 88,181 $ 53,142 $ 23,484 Effect of dilutive securities: Add: undistributed earnings allocated to non-vested restricted stock - 16 21 Less: undistributed earnings reallocated to non-vested restricted stock - (16 ) (21 ) Numerator for diluted earnings per share $ 88,181 $ 53,142 $ 23,484 Denominator: Weighted average shares outstanding – basic 43,743,243 43,725,333 43,676,171 Effect of dilutive securities: Stock options and other awards 1,433 5,859 9,408 Weighted average shares outstanding – diluted 43,744,676 43,731,192 43,685,579 Basic earnings per share $ 2.02 $ 1.22 $ 0.54 Diluted earnings per share $ 2.02 $ 1.22 $ 0.54

Note 18 - Stock Based Compens_2

Note 18 - Stock Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Assumptions October 2018 Options September 2019 Options Expected volatility rate 33.87% 31.28% Expected dividend yield 1.48% 1.99% Risk-free interest rate 2.86% 1.71% Expected forfeiture rate 0.00% 0.00% Expected term in years 2.7 2.6
Share-based Payment Arrangement, Option, Activity [Table Text Block]	Weighted Average Options Exercise Price Outstanding at January 1, 2017 * 70,000 $ 12.48 Granted - $ - Exercised - $ - Canceled, forfeited, or expired - $ - Outstanding at December 31, 2017 70,000 $ 12.48 Granted 10,000 $ 16.21 Exercised (40,000 ) $ 11.34 Canceled, forfeited, or expired - $ - Outstanding at December 31, 2018 40,000 $ 14.55 Granted 10,000 $ 12.07 Exercised - $ - Canceled, forfeited, or expired - $ - Outstanding at December 31, 2019 50,000 $ 14.05
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 2019 Life Price 2019 Price $ 13.99 30,000 0.96 $ 13.99 30,000 $ 13.99 $ 16.21 10,000 3.81 $ 16.21 10,000 $ 16.21 $ 12.07 10,000 4.72 $ 12.07 10,000 $ 12.07 50,000 2.28 $ 14.05 50,000 $ 14.05
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]	Number of Weighted Average Weighted Restricted Grant Date Average Life Stock Fair Value Remaining Unvested as of January 1, 2017 133,334 $ 16.90 1.15 Granted - - - Vested 108,334 $ 16.85 - Forfeited - - - Unvested as of December 31, 2017 25,000 $ 17.09 0.67 Granted - - - Vested 25,000 $ 17.09 - Forfeited - - - Unvested as of December 31, 2018 - $ - - Granted - - - Vested - $ - - Forfeited - - - Unvested as of December 31, 2019 - $ - -

Note 21 - Related Party Trans_2

Note 21 - Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Condensed Balance Sheet [Table Text Block]	2019 2018 Accounts receivable Biodiesel, petrodiesel, blends, and other petroleum products $ 4,602 $ 1,844 Total accounts receivable $ 4,602 $ 1,844 Prepaid expenses Administrative services and other $ 12 $ 12 Total prepaid expenses $ 12 $ 12 Accounts payable Natural gas and fuel purchases $ 867 $ 1,354 Travel and administrative services 388 335 Total accounts payable $ 1,255 $ 1,689 Accrued expenses and other current liabilities Travel and administrative services $ 64 $ - Total accrued liabilities $ 64 $ -
Condensed Income Statement [Table Text Block]	For the years ended December 31: 2019 2018 2017 Revenues Biodiesel, petrodiesel, blends, and other petroleum products $ 3,178 $ 4,069 $ 1,882 Total revenues $ 3,178 $ 4,069 $ 1,882 Cost of goods sold Biodiesel, petrodiesel, blends, and other petroleum products $ 12,647 $ 13,985 $ 21,655 Natural gas purchases 4,298 5,510 4,871 Total cost of goods sold $ 16,945 $ 19,495 $ 26,526 Distribution Distribution and related services $ 181 $ 191 $ 160 Total distribution $ 181 $ 191 $ 160 Selling, general and administrative expenses Commodity trading advisory fees $ 307 $ 307 $ 307 Travel and administrative services 280 282 189 Income tax, consulting services, and other 120 101 80 Total selling, general, and administrative expenses $ 707 $ 690 $ 576

Note 22 - Segment Information (

Note 22 - Segment Information (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Twelve months ended 2019 2018 2017 Revenue Custom chemicals $ 90,962 $ 97,746 $ 87,905 Performance chemicals 13,865 19,382 17,481 Chemicals revenue 104,827 117,128 105,386 Biofuels revenue 100,399 173,890 169,640 Total Revenue $ 205,226 $ 291,018 $ 275,026 Segment gross profit (loss) Chemicals $ 29,923 $ 33,986 $ 28,016 Biofuels 44,216 39,412 (7,755 ) Total gross profit $ 74,139 $ 73,398 $ 20,261

Note 23 - Quarterly Financial_2

Note 23 - Quarterly Financial Information (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Quarterly Financial Information [Table Text Block]	Quarter 1st 2nd 3rd 4th 2019 Revenue $ 48,501 $ 70,864 $ 65,684 $ 20,177 * Gross profit $ 3,262 $ 3,270 $ 5,462 $ 62,145 * Net income $ 5,499 $ 3,687 $ 6,622 $ 72,373 Net income per common share: Basic $ 0.13 $ 0.08 $ 0.15 $ 1.65 Diluted $ 0.13 $ 0.08 $ 0.15 $ 1.65 2018 Revenue $ 55,747 * $ 88,336 $ 81,422 $ 65,513 Gross profit $ 37,507 * $ 8,271 $ 12,653 $ 14,967 Net income $ 35,826 $ 6,051 $ 9,445 $ 1,836 Net income per common share: Basic $ 0.82 $ 0.14 $ 0.22 $ 0.04 Diluted $ 0.82 $ 0.14 $ 0.22 $ 0.04

Note 2 - Significant Accounti_3

Note 2 - Significant Accounting Policies and Basis of Presentation (Details Textual) $ in Thousands	Jan. 01, 2019USD ($)	Dec. 31, 2019USD ($)	[1]	Sep. 30, 2019USD ($)	Jun. 30, 2019USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Sep. 30, 2018USD ($)	Jun. 30, 2018USD ($)	Mar. 31, 2018USD ($)	[1]	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Jan. 01, 2018USD ($)
Revenue from Contract with Customer, Excluding Assessed Tax, Total		$ 20,177		$ 65,684	$ 70,864	$ 48,501	$ 65,513	$ 81,422	$ 88,336	$ 55,747		$ 205,226	$ 291,018	$ 275,026
Cumulative Effect of New Accounting Principle in Period of Adoption														(5,179)
Accounting Standards Update 2014-09 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption															$ 6,900
Accounting Standards Update 2016-01 [Member]
Cumulative Effect on Retained Earnings, before Tax	$ 13,139
Cumulative Effect on Retained Earnings, Net of Tax, Total	8,273
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset	1,641
Operating Lease, Liability, Current	370
Operating Lease, Liability, Noncurrent	$ 1,271
Environmental Assets [Member]
Property, Plant and Equipment, Useful Life												27 years
Biodiesel [Member] | One Customer [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total												$ 22,351	$ 57,198	$ 38,917
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | One Customer [Member] | Chemicals [Member]
Concentration Risk, Percentage												22.00%	27.00%	30.00%
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Biodiesel [Member]
Number Of Major Customers												1	2
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Biodiesel [Member] | One Customer [Member]
Concentration Risk, Percentage												11.00%	20.00%	14.00%
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Chemicals [Member] | One Customer [Member]
Concentration Risk, Percentage												11.00%	11.00%	11.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Biodiesel [Member] | One Customer [Member]
Concentration Risk, Percentage												0.00%	5.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Chemicals [Member] | One Customer [Member]
Concentration Risk, Percentage												3.00%	25.00%
Product Concentration Risk [Member] | Revenue Benchmark [Member] | One Product Contract [Member]
Concentration Risk, Percentage												7.00%	6.00%	5.00%
Product Concentration Risk [Member] | Revenue Benchmark [Member] | One Product Contract [Member] | Chemicals [Member]
Concentration Risk, Percentage												15.00%	14.00%	14.00%
[1]	The fourth quarter of 2019 and the first quarter of 2018 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 - Estimated Useful Lives of Property, Plant, and Equipment (Details)	12 Months Ended
	Dec. 31, 2019
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 - Reinstatement of the_2

Note 3 - Reinstatement of the Biodiesel Blenders' Tax Credit and Small Agri-biodiesel Producer Tax Credit (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Biodiesel Blenders Credit [Member]
Benefit From Tax Credit, Pretax	$ 57,872	$ 28,865
Biodiesel Blenders Credit [Member] | Tax Year 2019 [Member]
Benefit From Tax Credit, Pretax	26,571
Biodiesel Blenders Credit [Member] | Tax Year 2018 [Member]
Benefit From Tax Credit, Pretax		31,301
Small Agri Biodiesel Producers Credit [Member]
Benefit From Tax Credit, Pretax	$ 1,500	$ 1,500	$ 1,500

Note 4 - Revenue Recognition 1

Note 4 - Revenue Recognition 1 (Details Textual) $ in Thousands	3 Months Ended											12 Months Ended
	Dec. 31, 2019USD ($)		Sep. 30, 2019USD ($)	Jun. 30, 2019USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)		Sep. 30, 2018USD ($)	Jun. 30, 2018USD ($)	Mar. 31, 2018USD ($)	[2]	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)		Dec. 31, 2017USD ($)	Jan. 01, 2018USD ($)
Increase (Decrease) in Contract with Customer, Liability												$ 1,628	$ (1,258)		$ (4,215)
Contract with Customer, Liability, Revenue Recognized												4,077	6,504
Contract with Customer, Asset, after Allowance for Credit Loss, Total	$ 1,067					$ 798	[1]					1,067	798	[1]		$ 505
Contract with Customer, Liability, Total																$ 21,013
Accounts Receivable, Blenders' Tax Credit	97,295					0						97,295	0
Accounts Receivable, Allowance for Credit Loss, Ending Balance	0					0						0	0
Revenue from Contract with Customer, Excluding Assessed Tax, Total	20,177	[2]	$ 65,684	$ 70,864	$ 48,501	65,513		$ 81,422	$ 88,336	$ 55,747		$ 205,226	$ 291,018		$ 275,026
Bill and Hold Arrangements [Member]
Number Of Major Customers												3	3		2
Bill and Hold Arrangements [Member] | Three Customers [Member]
Contract with Customer, Liability, Total	$ 3,255					$ 4,203						$ 3,255	$ 4,203
Revenue from Contract with Customer, Excluding Assessed Tax, Total												51,700	44,924
Bill and Hold Arrangements [Member] | Two Customers [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total															$ 17,517
Chemicals [Member]
Increase (Decrease) in Contract with Customer, Liability												$ 5,926	$ 5,823
[1]	Contract asset and contract liability balances at January 1, 2018 were $505 and $21,013, respectively.
[2]	The fourth quarter of 2019 and the first quarter of 2018 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) $ in Thousands	Dec. 31, 2019USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Amount	$ 22,181
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Percentage	23.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Percentage	77.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 | Minimum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 | Maximum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	7 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | Minimum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | Maximum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	7 years

Note 4 - Revenue Recognition -

Note 4 - Revenue Recognition - Contract Assets and Liabilities (Details) - USD ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018	[1]	Jan. 01, 2018
Contract assets, included in accounts receivable		$ 1,067	$ 798		$ 505
Contract liabilities, included in Deferred revenue - short-term		5,030	4,374
Contract liabilities, included in Deferred revenue - long-term		17,151	15,959
Trade Accounts Receivable [Member]
Trade receivables, included in accounts receivable, net of allowances for bad debts of $0**	[2]	$ 11,902	$ 15,496
[1]	Contract asset and contract liability balances at January 1, 2018 were $505 and $21,013, respectively.
[2]	Exclusive of the BTC of $97,295 and $0, respectively, and net of allowances for bad debt of $0 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, 2019	[1]	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	[1]	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue	$ 20,177		$ 65,684	$ 70,864	$ 48,501	$ 65,513	$ 81,422	$ 88,336	$ 55,747		$ 205,226	$ 291,018	$ 275,026
Revenue from non-contractual arrangements											222	222
BTC rebate											(39,423)	(13,559)
Bill and Hold Revenue [Member]
Revenue											51,700	44,924
Non-bill and Hold Revenue [Member]
Revenue											153,526	246,094
Long-term Contract Revenue [Member]
Revenue											40,156	60,721
Short-term Contract Revenue [Member]
Revenue											$ 204,271	$ 243,634
[1]	The fourth quarter of 2019 and the first quarter of 2018 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, 2019	[1]	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	[1]	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue	$ 20,177		$ 65,684	$ 70,864	$ 48,501	$ 65,513	$ 81,422	$ 88,336	$ 55,747		$ 205,226	$ 291,018	$ 275,026
UNITED STATES
Revenue											203,470	289,019	271,635
Non-US [Member]
Revenue											$ 1,756	$ 1,999	$ 3,391
[1]	The fourth quarter of 2019 and the first quarter of 2018 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, 2019	Dec. 31, 2018
Inventory Write-down	$ 0	$ 0

Note 5 - Inventory - Carrying V

Note 5 - Inventory - Carrying Values of Inventory (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finished goods	$ 22,564	$ 23,658
Work in process	2,768	2,100
Raw materials and supplies	20,121	23,909
Inventory, gross	45,453	49,667
LIFO reserve	(7,880)	(10,371)
Total inventory	$ 37,573	$ 39,296

Note 6 - Derivative Instrumen_3

Note 6 - Derivative Instruments (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net, Total	$ (1,301)	$ 633	$ (3,844)
Restricted Cash and Cash Equivalents, Total	$ 1,091	$ 980

Note 6 - Derivative Instrumen_4

Note 6 - Derivative Instruments - Carrying Value of Derivative Instruments (Details) $ in Thousands	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Commodity Option [Member]
Contract quantity short		100
Fair value Liabilities		$ (484)
Future [Member]
Contract quantity short	140	96
Fair value Liabilities	$ (267)
Fair value Assets		$ 187

Note 7 - Marketable Securitie_2

Note 7 - Marketable Securities (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Marketable Securities, Total	$ 73,620	$ 79,888
Equity Securities, FV-NI, Unrealized Gain (Loss), Total	6,281	(13,238)
Debt Securities, Available-for-sale, Unrealized Loss Position, Total	151	2,540
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	151
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	3
Debt Securities, Available-for-sale, Realized Gain (Loss), Total	0	$ 0	$ 248
Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost	5,104
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value	$ 5,479

Note 7 - Marketable Securitie_3

Note 7 - Marketable Securities - Marketable Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Adjusted Cost	$ 5,104	$ 4,575
Unrealized Gains	378	58
Unrealized Losses	(3)	(83)
Fair Value	5,479	4,550
Trust Preferred Securities [Member]
Adjusted Cost	3,676	3,147
Unrealized Gains	250	21
Unrealized Losses		(18)
Fair Value	3,926	3,150
Corporate Debt Securities [Member]
Adjusted Cost	1,428	1,428
Unrealized Gains	128	37
Unrealized Losses	(3)	(65)
Fair Value	$ 1,553	$ 1,400

Note 9 - Property, Plant, and_3

Note 9 - Property, Plant, and Equipment (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Depreciation, Total	$ 12,087	$ 11,227	$ 11,645

Note 9 - Property, Plant, and_4

Note 9 - Property, Plant, and Equipment - Property, Plant, and Equipment Summary (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Land and land improvements	$ 5,924	$ 5,929
Buildings and building equipment	27,244	27,021
Machinery and equipment	176,772	169,341
Construction in progress	646	2,643
Accumulated depreciation	(111,989)	(101,359)
Total	$ 98,597	$ 103,575

Note 10 - Intangible Assets (De

Note 10 - Intangible Assets (Details Textual) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Apr. 30, 2015	Dec. 31, 2019	Dec. 31, 2018
Payments to Acquire Intangible Assets	$ 1,408
Intangible Assets, Net (Excluding Goodwill), Total		$ 1,408	$ 1,408
Impairment of Intangible Assets (Excluding Goodwill), Total		$ 0	$ 0

Note 11 - Other Assets (Details

Note 11 - Other Assets (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Other Assets, Noncurrent, Total	$ 5,611	$ 3,842
Other Assets [Member]
Other Assets, Noncurrent, Total	$ 4,054	$ 3,806

Note 12 - Accrued Expenses an_3

Note 12 - Accrued Expenses and Other Current Liabilities - Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accrued employee liabilities	$ 2,534	$ 1,253
Accrued property, franchise, motor fuel and other taxes	1,226	1,225
Other	113	264
Total	4,410	2,742
Other Current Liabilities [Member]
Lease liability, current	$ 537

Note 13 - Borrowings (Details T

Note 13 - Borrowings (Details Textual) - Revolving Credit Facility [Member] - USD ($) $ in Thousands	May 25, 2016	Dec. 31, 2019	Dec. 31, 2018	Apr. 16, 2015
Regions Bank and PNC Bank N.A. [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 165,000			$ 150,000
Line of Credit, Additional Borrowing Capacity	$ 15,000
Line of Credit Facility, Expiration Period	5 years
Line of Credit Facility Sublimit for Letters of Credit	$ 30,000
Line of Credit Facility Swingline Loans	$ 15,000
Letters of Credit Outstanding, Amount		$ 1,617
Long-term Line of Credit, Total		$ 0	$ 0
Another Domestic Bank [Member]
Line of Credit Facility, Expiration Period		180 days
Letters of Credit Outstanding, Amount		$ 5,000

Note 13 - Borrowings - Leverage

Note 13 - Borrowings - Leverage Ratio (Details)	12 Months Ended
	Dec. 31, 2019
Leverage Ratio1 [Member]
Commitment Fee	0.15%
Leverage Ratio1 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Spread on variable rate	1.25%
Leverage Ratio1 [Member] | Base Rate [Member]
Spread on variable rate	0.25%
Leverage Ratio1 [Member] | Maximum [Member]
Leverage ratio	1
Leverage Ratio 2 [Member]
Commitment Fee	0.20%
Leverage Ratio 2 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Spread on variable rate	1.50%
Leverage Ratio 2 [Member] | Base Rate [Member]
Spread on variable rate	0.50%
Leverage Ratio 2 [Member] | Maximum [Member]
Leverage ratio	1.5
Leverage Ratio 2 [Member] | Minimum [Member]
Leverage ratio	1
Leverage Ratio 3 [Member]
Commitment Fee	0.25%
Leverage Ratio 3 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Spread on variable rate	1.75%
Leverage Ratio 3 [Member] | Base Rate [Member]
Spread on variable rate	0.75%
Leverage Ratio 3 [Member] | Maximum [Member]
Leverage ratio	2
Leverage Ratio 3 [Member] | Minimum [Member]
Leverage ratio	1.5
Leverage Ratio 4 [Member]
Commitment Fee	0.30%
Leverage Ratio 4 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Spread on variable rate	2.00%
Leverage Ratio 4 [Member] | Base Rate [Member]
Spread on variable rate	1.00%
Leverage Ratio 4 [Member] | Maximum [Member]
Leverage ratio	2.5
Leverage Ratio 4 [Member] | Minimum [Member]
Leverage ratio	2
Leverage Ratio 5 [Member]
Commitment Fee	0.35%
Leverage Ratio 5 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Spread on variable rate	2.25%
Leverage Ratio 5 [Member] | Base Rate [Member]
Spread on variable rate	1.25%
Leverage Ratio 5 [Member] | Minimum [Member]
Leverage ratio	2.5

Note 14 - Asset Retirement Ob_2

Note 14 - Asset Retirement Obligations and Environmental Reserves (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Asset Retirement Obligation, Ending Balance	$ 1,288	$ 904
Asset Retirement Obligation, Accretion Expense	28	$ 28
Asset Retirement Obligation, Revision of Estimate	$ 356

Note 15 - Lease Commitments a_3

Note 15 - Lease Commitments and Purchase Obligations (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Operating Lease, Weighted Average Remaining Lease Term	4 years
Other Noncurrent Assets [Member]
Operating Lease, Right-of-Use Asset	$ 1,557
Other Current Liabilities [Member]
Operating Lease, Liability, Current	537
Other Noncurrent Liabilities [Member]
Operating Lease, Liability, Noncurrent	$ 1,020
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term	1 year
Maximum [Member]
Lessee, Operating Lease, Remaining Lease Term	5 years

Note 15 - Lease Commitments a_4

Note 15 - Lease Commitments and Purchase Obligations - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating lease expense	$ 576	$ 540
Short-term lease expense	171
Cash paid for operating leases	576	540
Noncash operating leases	$ 432
Weighted average discount rate	4.40%

Note 15 - Lease Commitments a_5

Note 15 - Lease Commitments and Purchase Obligations - Maturities of Lease Liabilities (Details) $ in Thousands	Dec. 31, 2019USD ($)
2020	$ 595
2021	389
2022	370
2023	318
2024	32
Total	1,704
Less: imputed interest	(147)
Other Current Liabilities and Other Noncurrent Liabilities [Member]
Present value of lease liabilities	$ 1,557

Note 15 - Lease Commitments a_6

Note 15 - Lease Commitments and Purchase Obligations - Payment Obligations (Details) $ in Thousands	Dec. 31, 2019USD ($)
2020	$ 37
2021-2023	111
2024-2025	74
2026 and later	6
Total	$ 228

Note 16 - Income Tax (Benefit_3

Note 16 - Income Tax (Benefit) Provision (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Effective Income Tax Rate Reconciliation, Percent, Total	(10.50%)	11.70%	(41.20%)
Income Tax Expense (Benefit), Total	$ (8,386)	$ 7,019	$ (6,862)
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions, Net		2,728
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions		2,804
Unrecognized Tax Benefits, Interest on Income Taxes Expense		$ 448
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	35.00%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability			$ 12,066
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total	$ (557)	$ 681
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	$ 0	$ 598
Open Tax Year	2014 2015 2016 2017 2018 2019
Domestic Tax Authority [Member]
Operating Loss Carryforwards, Total	$ 3,121
State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Total	$ 363

Note 16 - Income Tax (Benefit_4

Note 16 - Income Tax (Benefit) Provision - Summary of Provisions for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income before taxes - U.S.	$ 79,795	$ 60,177	$ 16,649
Current	(2,811)	7,105	6,185
Deferred	(4,006)	(1,389)	(12,632)
Current	(430)	1,167	610
Deferred	(1,139)	136	(1,025)
Total	$ (8,386)	$ 7,019	$ (6,862)

Note 16 - Income Tax (Benefit_5

Note 16 - Income Tax (Benefit) Provision - Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Amount computed using the statutory rate	21.00%	21.00%	35.00%
Section 199 manufacturing deduction			(0.50%)
Small Agri-biodiesel Producer Tax Credit	(3.00%)	(1.60%)
Federal BTC benefit	(23.40%)	(12.90%)
State BTC benefit	(5.80%)	(3.30%)
Credit for increasing research activities	(0.20%)	(0.20%)	(0.80%)
Dividends received deduction	(0.40%)	(0.60%)	(5.20%)
State income taxes, net	4.00%	4.20%	2.80%
State research credits	(0.90%)
State rate change impact	(1.60%)
Tax expense recorded as an increase in unrecognized tax benefit		5.30%	1.10%
Tax Cuts and Jobs Act of 2017 impact			(72.50%)
Other	(0.20%)	(0.20%)	(1.10%)
Effective Income Tax Rate Reconciliation, Percent, Total	(10.50%)	11.70%	(41.20%)

Note 16 - Income Tax (Benefit_6

Note 16 - Income Tax (Benefit) Provision - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Compensation	$ 267	$ 30
Inventory reserves	650	458
Self-insurance	103	63
Asset retirement obligation	199	209
Deferred revenue	4,427	5,015
Federal net operating loss carryforwards	3,121	1
State net operating loss carryforwards	363
Accrued expenses	1,684	1,653
Stock-based compensation	41	108
State credit carryforwards	343
Derivative instruments	56
Other		130
Total deferred tax assets	11,254	7,667
Available-for-sale securities, unrealized gains	(79)
Derivative instruments		(86)
LIFO inventory	(2,860)	(3,389)
Depreciation	(19,891)	(22,010)
Marketable securities, unrealized gains	(1,334)
Other	(55)	(208)
Total deferred tax liabilities	(24,219)	(25,693)
Net deferred tax liabilities	$ (12,965)	$ (18,026)

Note 16 - Income Tax (Benefit_7

Note 16 - Income Tax (Benefit) Provision - Unrecognized Tax Benefits Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Balance at January 1	$ 2,804		$ 2,056
Increases to tax positions taken in the current year
Increases to tax positions taken in a prior year		2,804
Decrease due to resolution of tax positions taken in a prior year	(2,804)		(2,056)
Balance at December 31		$ 2,804

Note 17 - Earnings Per Share (D

Note 17 - Earnings Per Share (Details Textual) - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	12,500	79,167
Share-based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	35,000	15,000	7,500

Note 17 - Earnings Per Share -

Note 17 - 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, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net income	$ 72,373	$ 6,622	$ 3,687	$ 5,499	$ 1,836	$ 9,445	$ 6,051	$ 35,826	$ 88,181	$ 53,158	$ 23,511
Less: distributed earnings allocated to non-vested stock											(6)
Less: undistributed earnings allocated to non-vested restricted stock										(16)	(21)
Numerator for basic earnings per share									88,181	53,142	23,484
Add: undistributed earnings allocated to non-vested restricted stock										16	21
Less: undistributed earnings reallocated to non-vested restricted stock										(16)	(21)
Numerator for diluted earnings per share									$ 88,181	$ 53,142	$ 23,484
Weighted average shares outstanding – basic (in shares)									43,743,243	43,725,333	43,676,171
Stock options and other awards (in shares)									1,433	5,859	9,408
Weighted average shares outstanding – diluted (in shares)									43,744,676	43,731,192	43,685,579
Basic earnings per share (in dollars per share)	$ 1.65	$ 0.15	$ 0.08	$ 0.13	$ 0.04	$ 0.22	$ 0.14	$ 0.82	$ 2.02	$ 1.22	$ 0.54
Diluted earnings per share (in dollars per share)	$ 1.65	$ 0.15	$ 0.08	$ 0.13	$ 0.04	$ 0.22	$ 0.14	$ 0.82	$ 2.02	$ 1.22	$ 0.54

Note 18 - Stock Based Compens_3

Note 18 - Stock Based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	Sep. 07, 2017	Sep. 30, 2019	Oct. 31, 2018	Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum	10.00%
Share Based Compensation Arrangement By Share Based Payment Award Award Term	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period				0		0		0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross				10,000	[1]	10,000	[1]	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value				$ 2.24		$ 3.64
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period				0		40,000	[1]		[1]
Payment, Tax Withholding, Share-based Payment Arrangement						$ 176		$ 121
Share-based Payment Arrangement, Expense				21		357		998
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount				0		0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value				$ 3		56
Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant				4,354,167
Prior Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant				0
Share-based Payment Arrangement, Option [Member]
Payment, Tax Withholding, Share-based Payment Arrangement						65
Share-based Payment Arrangement [Member]
Payment, Tax Withholding, Share-based Payment Arrangement						111
Restricted Stock [Member]
Share-based Payment Arrangement, Expense, Tax Benefit				$ 0		$ 12		$ 31
Options Vested [Member]
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation								8,300,000
Options Vested [Member] | Share-based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation						30,896
Options Vested [Member] | Share-based Payment Arrangement [Member]
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation						7,531
New Members of Board of Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		10,000	10,000
[1]	Granted pursuant to the "Prior Plan".

Note 18 - Stock Based Compens_4

Note 18 - Stock Based Compensation - Assumptions Used in the Determination of the Fair Value of the Options Granted (Details)	12 Months Ended
	Dec. 31, 2019
October 2018 Options [Member]
Expected volatility rate	33.87%
Expected dividend yield	1.48%
Risk-free interest rate	2.86%
Expected forfeiture rate	0.00%
Expected term in years (Year)	2 years 255 days
September 2019 Options [Member]
Expected volatility rate	31.28%
Expected dividend yield	1.99%
Risk-free interest rate	1.71%
Expected forfeiture rate	0.00%
Expected term in years (Year)	2 years 219 days

Note 18 - Stock Based Compens_5

Note 18 - Stock Based Compensation - Stock Option Activity (Details) - $ / shares		12 Months Ended
		Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Outstanding (in shares)	[1]	40,000		70,000		70,000
Outstanding, weighted average exercise price (in dollars per share)		$ 14.55		$ 12.48		$ 12.48
Granted, weighted average exercise price (in dollars per share)		$ 12.07		$ 16.21
Exercised (in shares)		0		(40,000)	[1]		[1]
Exercised, weighted average exercise price (in dollars per share)				$ 11.34
Canceled, forfeited, or expired (in shares)	[1]
Canceled, forfeited, or expired, weighted average exercise price (in dollars per share)
Granted (in shares)		10,000	[1]	10,000	[1]	0
Outstanding (in shares)	[1]	50,000		40,000		70,000
Outstanding, weighted average exercise price (in dollars per share)		$ 14.05		$ 14.55		$ 12.48
[1]	Granted pursuant to the "Prior Plan".

Note 18 - Stock Based Compens_6

Note 18 - Stock Based Compensation - Stock Options Activities, by Exercise Price Range (Details)	12 Months Ended
	Dec. 31, 2019$ / sharesshares
Number outstanding (in shares) | shares	50,000
Number outstanding, weighted average remaining contractual life (Year)	2 years 102 days
Number outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 14.05
Number exercisable (in shares) | shares	50,000
Number exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 14.05
Price Range 1 [Member]
Number outstanding (in shares) | shares	30,000
Number outstanding, weighted average remaining contractual life (Year)	350 days
Number outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 13.99
Number exercisable (in shares) | shares	30,000
Number exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 13.99
Price Range 2 [Member]
Number outstanding (in shares) | shares	10,000
Number outstanding, weighted average remaining contractual life (Year)	3 years 295 days
Number outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 16.21
Number exercisable (in shares) | shares	10,000
Number exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 16.21
Price Range3 [Member]
Number outstanding (in shares) | shares	10,000
Number outstanding, weighted average remaining contractual life (Year)	4 years 262 days
Number outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 12.07
Number exercisable (in shares) | shares	10,000
Number exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 12.07

Note 18 - Stock Based Compens_7

Note 18 - Stock Based Compensation - Unvested Restricted Stock Activity (Details) - Restricted Stock [Member] - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Number of unvested restricted stock (in shares)		25,000	133,334
Weighted average grant date fair value - unvested (in dollars per share)		$ 17.09	$ 16.90
Weighted average life remaining - unvested (Year)			244 days	1 year 54 days
Number of restricted stock, granted (in shares)
Weighted average grant date fair value - granted (in dollars per share)
Number of restricted stock, vested (in shares)		25,000	108,334
Weighted average grant date fair value - vested (in dollars per share)		$ 17.09	$ 16.85
Number of restricted stock, forfeited (in shares)
Weighted average grant date fair value - forfeited (in dollars per share)
Number of unvested restricted stock (in shares)			25,000	133,334
Weighted average grant date fair value - unvested (in dollars per share)			$ 17.09	$ 16.90

Note 19 - Stockholders' Equity

Note 19 - Stockholders' Equity (Details Textual)	Dec. 31, 2019shares
Additional Shares Available for Trading if Exercise Registration Rights	7,012,600

Note 20 - Employee Benefit Pl_2

Note 20 - Employee Benefit Plans (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent		6.00%
Defined Contribution Plan, Cost	$ 1,771	$ 1,801	$ 1,632

Note 21 - Related Party Trans_3

Note 21 - Related Party Transactions - Related Party Balance Sheet Accounts (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounts receivable – related parties	$ 4,602	$ 1,844
Prepaid expenses – related parties	12	12
Accounts payable – related parties	1,255	1,689
Accrued liabilities, related parties	64
Affiliated Entity [Member] | Administrative Servicesand Other [Member]
Prepaid expenses – related parties	12	12
Affiliated Entity [Member] | Travel and Administrative Services [Member]
Accounts payable – related parties	388	335
Accrued liabilities, related parties	64
Affiliated Entity [Member] | Biodiesel [Member]
Accounts receivable – related parties	4,602	1,844
Affiliated Entity [Member] | Natural Gas Purchases [Member]
Accounts payable – related parties	$ 867	$ 1,354

Note 21 - Related Party Trans_4

Note 21 - Related Party Transactions - Related Party Income Statement Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues
Biodiesel, petrodiesel, blends, and other petroleum products	$ 3,178	$ 4,069	$ 1,882
Cost of goods sold, related parties	16,945	19,495	26,526
Distribution, related parties	181	191	160
Selling, general, and administrative expenses, related parties	707	690	576
Affiliated Entity [Member] | Biodeisel, Petrodiesel Blends, and Other Petroleum Products [Member]
Revenues
Biodiesel, petrodiesel, blends, and other petroleum products	3,178	4,069	1,882
Cost of goods sold, related parties	12,647	13,985	21,655
Affiliated Entity [Member] | Natural Gas Purchases [Member]
Revenues
Cost of goods sold, related parties	4,298	5,510	4,871
Affiliated Entity [Member] | Distribution Related [Member]
Revenues
Distribution, related parties	181	191	160
Affiliated Entity [Member] | Commodity Trading Advisory Fees [Member]
Revenues
Selling, general, and administrative expenses, related parties	307	307	307
Affiliated Entity [Member] | Travel and Administrative Services [Member]
Revenues
Selling, general, and administrative expenses, related parties	280	282	189
Affiliated Entity [Member] | Income Tax Consulting Services and Other [Member]
Revenues
Cost of goods sold, related parties	$ 120	$ 101	$ 80

Note 22 - Segment Information_2

Note 22 - Segment Information (Details Textual)	12 Months Ended
	Dec. 31, 2019
Number of Reportable Segments	2
Chemicals [Member]
Number of Reportable Segments	2

Note 22 - Segment Information -

Note 22 - Segment Information - Summary of Business by Segment (Details) - USD ($) $ in Thousands	3 Months Ended										12 Months Ended
	Dec. 31, 2019	[1]	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	[1]	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue from Contract with Customer, Excluding Assessed Tax, Total	$ 20,177		$ 65,684	$ 70,864	$ 48,501	$ 65,513	$ 81,422	$ 88,336	$ 55,747		$ 205,226	$ 291,018	$ 275,026
Gross profit	$ 62,145		$ 5,462	$ 3,270	$ 3,262	$ 14,967	$ 12,653	$ 8,271	$ 37,507		74,139	73,398	20,261
Operating Segments [Member] | Chemicals [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total											104,827	117,128	105,386
Gross profit											29,923	33,986	28,016
Operating Segments [Member] | Chemicals [Member] | Custom Chemicals [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total											90,962	97,746	87,905
Operating Segments [Member] | Chemicals [Member] | Performance Chemicals [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total											13,865	19,382	17,481
Operating Segments [Member] | Biofuels [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total											100,399	173,890	169,640
Gross profit											$ 44,216	$ 39,412	$ (7,755)
[1]	The fourth quarter of 2019 and the first quarter of 2018 includes the retroactive reinstatement of the BTC in revenue and gross profit (see Note 3 for further information).

Note 23 - Quarterly Financial_3

Note 23 - Quarterly Financial Information (Unaudited) - Quarterly Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended										12 Months Ended
	Dec. 31, 2019		Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue from Contract with Customer, Excluding Assessed Tax, Total	$ 20,177	[1]	$ 65,684	$ 70,864	$ 48,501	$ 65,513	$ 81,422	$ 88,336	$ 55,747	[1]	$ 205,226	$ 291,018	$ 275,026
Gross profit	62,145	[1]	5,462	3,270	3,262	14,967	12,653	8,271	37,507	[1]	74,139	73,398	20,261
Net income	$ 72,373		$ 6,622	$ 3,687	$ 5,499	$ 1,836	$ 9,445	$ 6,051	$ 35,826		$ 88,181	$ 53,158	$ 23,511
Basic (in dollars per share)	$ 1.65		$ 0.15	$ 0.08	$ 0.13	$ 0.04	$ 0.22	$ 0.14	$ 0.82		$ 2.02	$ 1.22	$ 0.54
Diluted (in dollars per share)	$ 1.65		$ 0.15	$ 0.08	$ 0.13	$ 0.04	$ 0.22	$ 0.14	$ 0.82		$ 2.02	$ 1.22	$ 0.54
[1]	The fourth quarter of 2019 and the first quarter of 2018 includes the retroactive reinstatement of the BTC in revenue and gross profit (see Note 3 for further information).