Renewable Energy (REGI) 10-Q 9 Nov 15 2015 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Oct. 31, 2015
Document Document And Entity Information [Abstract]
Entity Registrant Name	Renewable Energy Group, Inc.
Entity Central Index Key	1,463,258
Document Type	10-Q
Document Period End Date	Sep. 30, 2015
Amendment Flag	false
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		43,834,890

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
CURRENT ASSETS:
Cash and cash equivalents	$ 66,817	$ 63,516
Marketable securities	7,031	16,770
Accounts receivable, net (includes amounts owed by related parties of $0 and $36, respectively)	51,977	294,669
Inventories	78,907	97,508
Prepaid expenses and other assets	50,373	43,135
Restricted cash	0	12,845
Total current assets	255,105	528,443
Property, plant and equipment, net	563,072	493,196
Goodwill	191,477	188,275
Intangible assets, net	31,230	28,837
Investments	10,151	9,736
Other assets	16,877	19,586
Restricted cash	104,315	104,815
TOTAL ASSETS	1,172,227	1,372,888
CURRENT LIABILITIES:
Revolving lines of credit	22,423	16,679
Current maturities of long-term debt	4,696	5,746
Accounts payable (includes amounts owed to related parties of $0 and $1,101, respectively)	78,689	202,821
Accrued expenses and other liabilities	19,821	28,486
Deferred income taxes	9,031	14,899
Deferred revenue	0	16,680
Total current liabilities	134,660	285,311
Unfavorable lease obligation	17,800	19,170
Deferred income taxes	16,135	6,905
Contingent consideration for acquisitions	34,059	30,091
Long-term debt	252,246	247,183
Other liabilities	3,996	5,566
Total liabilities	$ 458,896	$ 594,226
COMMITMENTS AND CONTINGENCIES
EQUITY:
Common stock ($.0001 par value; 300,000,000 shares authorized; 44,283,281 and 44,422,881 shares outstanding, respectively)	$ 4	$ 4
Common stock—additional paid-in-capital	472,608	453,109
Retained earnings	265,300	321,083
Accumulated other comprehensive loss	(3,735)	(11)
Treasury stock (2,682,805 and 585,150 shares outstanding, respectively)	(24,341)	(4,412)
Total equity attributable to the Company's shareholders	709,836	769,773
Non-controlling interest	3,495	8,889
Total equity	713,331	778,662
TOTAL LIABILITIES AND EQUITY	$ 1,172,227	$ 1,372,888

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Accounts receivable, amounts owed by related parties	$ 0	$ 36
Accounts payable, amounts owed to related parties	$ 0	$ 1,101
Common stock, par or stated value per share (in usd per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	300,000,000	300,000,000
Common stock, shares, outstanding (in shares)	44,283,281	44,422,881
Treasury stock, shares outstanding (in shares)	2,682,805	585,150

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
REVENUES:
Biomass-based diesel sales	$ 393,758	$ 382,296	$ 981,239	$ 919,255
Biomass-based diesel government incentives	1,066	1,830	18,132	16,742
Total biodiesel sales	394,824	384,126	999,371	935,997
Services	32	132	165	219
Total revenues	394,856	384,258	999,536	936,216
COSTS OF GOODS SOLD:
Biomass-based diesel	390,424	351,033	989,999	854,800
Biomass-based diesel—related parties	0	10,490	4,542	31,919
Services	27	20	111	67
Total cost of goods sold	390,451	361,543	994,652	886,786
GROSS PROFIT	4,405	22,715	4,884	49,430
SELLING, GENERAL AND ADMINISTRATIVE EXPENSES	18,468	13,897	51,268	37,961
RESEARCH AND DEVELOPMENT EXPENSE	3,527	2,810	11,778	7,900
INCOME (LOSS) FROM OPERATIONS	(17,590)	6,008	(58,162)	3,569
OTHER INCOME (EXPENSE), NET:
Change in fair value of contingent consideration	(1,106)	1,059	722	1,443
Other income, net	4,896	124	7,240	556
Interest expense	(2,921)	(2,867)	(8,592)	(4,622)
Total other income (expenses)	869	(1,684)	(630)	(2,623)
INCOME (LOSS) BEFORE INCOME TAXES	(16,721)	4,324	(58,792)	946
INCOME TAX BENEFIT	1,050	248	2,654	12,274
NET INCOME (LOSS)	(15,671)	4,572	(56,138)	13,220
LESS—NET INCOME (LOSS) ATTRIBUTABLE TO NONCONTROLLING INTEREST	4	0	(355)	0
NET INCOME (LOSS) ATTRIBUTABLE TO THE COMPANY	(15,675)	4,572	(55,783)	13,220
PLUS—GAIN ON REDEMPTION OF PREFERRED STOCK	0	0	0	378
LESS—EFFECT OF CHANGES TO PREFERRED STOCK	0	0	0	(40)
LESS—EFFECT OF PARTICIPATING SHARE-BASED AWARDS	0	(68)	0	(196)
NET INCOME (LOSS) ATTRIBUTABLE TO THE COMPANY’S COMMON STOCKHOLDERS	$ (15,675)	$ 4,504	$ (55,783)	$ 13,362
NET INCOME (LOSS) PER SHARE ATTRIBUTABLE TO COMMON STOCKHOLDERS:
BASIC (in dollars per share)	$ (0.36)	$ 0.11	$ (1.27)	$ 0.33
DILUTED (in dollars per share)	$ (0.36)	$ 0.11	$ (1.27)	$ 0.32
WEIGHTED AVERAGE SHARES USED TO COMPUTE NET INCOME (LOSS) PER SHARE ATTRIBUTABLE TO COMMON STOCKHOLDERS:
BASIC (in shares)	43,844,005	42,374,768	43,979,266	40,216,467
DILUTED (in shares)	43,844,005	42,432,005	43,979,266	40,228,929

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (15,671)	$ 4,572	$ (56,138)	$ 13,220
Unrealized gains (losses) on marketable securities, net of taxes of $0 and $0, respectively	14	4	(1)	(18)
Foreign currency translation adjustments	(470)	0	(4,346)	0
Other comprehensive income (loss)	(456)	4	(4,347)	(18)
Comprehensive income (loss)	(16,127)	4,576	(60,485)	13,202
Less—Comprehensive income (loss) attributable to noncontrolling interest	(53)	0	(623)	0
Comprehensive income (loss) attributable to the Company	$ (16,074)	$ 4,576	$ (59,862)	$ 13,202

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Comprehensive Loss (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Taxes on unrealized losses on marketable securities	$ 0	$ 0	$ 0	$ 0

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Redeemable Preferred Stock and Equity (Unaudited) - USD ($) $ in Thousands	Total	Redeemable Preferred Stock	Common Stock	Common Stock - Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock	Noncontrolling Interest
Beginning Balance at Dec. 31, 2013	$ 594,070	$ 3,963	$ 4	$ 359,818	$ 238,134	$ 0	$ (3,886)	$ 0
Beginning Balance, shares at Dec. 31, 2013		143,313	36,506,221
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock	582			582
Issuance of common stock, shares			49,662
Conversion of Series B Preferred Stock and restricted stock units to common stock	23	$ (23)		23
Conversion of Series B Preferred Stock and restricted stock units to common stock, Shares		(816)	(1,634)
Preferred stock redemption	378	$ (3,940)			378
Preferred stock redemption, shares		(142,497)
Issuance of common stock in acquisition (net of issuance costs of $884)	60,196			60,196
Conversion of restricted stock units to common stock	0
Conversion of restricted stock units to common stock, shares			24,906
Convertible notes conversion feature (net of taxes of $5,082 and net of issuance cost of $881)	19,068			19,068
Purchase of capped call transactions	(11,904)			(11,904)
Purchase of remaining interest in VIE (net of taxes of $300)	(524)			(524)
Issuance of common stock in acquisition, shares			5,724,172
Stock compensation expense	4,041			4,041
Series B Preferred Stock dividends paid	(40)				(40)
Net change in unrealized losses on marketable securities	(18)					(18)
Foreign currency translation adjustment	0
Net income (loss)	13,220				13,220
Ending Balance at Sep. 30, 2014	679,092	$ 0	$ 4	431,300	251,692	(18)	(3,886)	0
Ending Balance, Shares at Sep. 30, 2014		0	42,306,595
Beginning Balance at Dec. 31, 2014	778,662	$ 0	$ 4	453,109	321,083	(11)	(4,412)	8,889
Beginning Balance, shares at Dec. 31, 2014		0	44,422,881
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock	15,722			15,722
Issuance of common stock, shares			1,712,966
Conversion of restricted stock units to common stock	(616)						(616)
Conversion of restricted stock units to common stock, shares			178,156
Treasury stock purchases	$ (19,313)						(19,313)
Treasury stock purchases, shares	(66,933)		(2,030,722)
Acquisitions of noncontrolling interests	$ (4,416)							(4,416)
Stock compensation expense	3,427			3,427
Net change in unrealized losses on marketable securities	(1)					(1)
Foreign currency translation adjustment	(4,346)					(3,723)		(623)
Net income (loss)	(56,138)				(55,783)			(355)
Other	350			350
Ending Balance at Sep. 30, 2015	$ 713,331	$ 0	$ 4	$ 472,608	$ 265,300	$ (3,735)	$ (24,341)	$ 3,495
Ending Balance, Shares at Sep. 30, 2015		0	44,283,281

Condensed Consolidated Stateme8

Condensed Consolidated Statements of Redeemable Preferred Stock and Equity (Unaudited) (Parenthetical) $ in Thousands	9 Months Ended
	Sep. 30, 2014USD ($)
Statement of Stockholders' Equity [Abstract]
Issuance cost of common stock issued in acquisition	$ 884
Taxes on convertible notes conversion feature	5,082
Issuance costs on convertible notes conversion feature	881
Taxes on purchase of remaining interest in VIE	$ 300

Condensed Consolidated Stateme9

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ (56,138)	$ 13,220
Adjustments to reconcile net loss to net cash flows from operating activities:
Depreciation expense	18,008	9,526
Amortization expense of assets and liabilities, net	369	412
Accretion of convertible note discount	3,507	1,488
Amortization of marketable securities	183	0
Change in fair value of contingent consideration	(722)	(1,443)
Bargain purchase gain from acquisition	(5,358)	0
Provision for doubtful accounts	(843)	356
Stock compensation expense	3,427	4,041
Deferred tax benefit	(2,991)	(12,840)
Other operating activities	(248)	437
Changes in asset and liabilities, net of effects from acquisitions:
Accounts receivable, net	262,499	47,678
Inventories	36,810	38,379
Prepaid expenses and other assets	(8,974)	(12,358)
Accounts payable	(124,827)	967
Accrued expenses and other liabilities	(8,965)	(3,105)
Deferred revenue	(16,680)	(15,404)
Net cash flows provided by operating activities	99,057	71,354
CASH FLOWS FROM INVESTING ACTIVITIES:
Cash paid for marketable securities	(52,153)	(80,973)
Cash received from maturities of marketable securities	61,642	19,174
Insurance proceeds for assets impaired	6,500	0
Change in restricted cash	13,345	(104,815)
Cash paid for purchase of property, plant and equipment	(61,014)	(45,579)
Cash paid for acquisitions and additional interests, net of cash acquired	(40,996)	(32,892)
Cash paid for investments	(639)	(2,779)
Other investing activities	0	72
Net cash flows used in investing activities	(73,315)	(247,792)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net borrowings (repayments) on lines of credit	5,744	(10,986)
Cash received from issuance of debt	410	143,750
Cash paid for capped call transactions	0	(11,904)
Cash paid on debt	(5,084)	(20,340)
Cash paid for debt issuance costs	(383)	(4,381)
Cash paid for equity issuance costs	0	(1,527)
Cash paid for treasury stock	(19,929)	(529)
Cash paid for preferred stock dividends	0	(40)
Cash paid for redemption of preferred stock	0	(3,562)
Cash paid for contingent consideration settlement	(2,106)	0
Net cash flows provided by (used in) financing activities	(21,348)	90,481
NET CHANGE IN CASH AND CASH EQUIVALENTS	4,394	(85,957)
CASH AND CASH EQUIVALENTS, Beginning of period	63,516	153,227
Effect of exchange rate changes on cash	(1,093)	0
CASH AND CASH EQUIVALENTS, End of period	66,817	67,270
SUPPLEMENTAL DISCLOSURES OF CASH FLOWS INFORMATION:
Cash paid for income taxes	50	21
Cash paid for interest	4,418	2,286
Amounts included in period-end accounts payable for:
Purchases of property, plant and equipment	4,043	5,905
Debt issuance cost	84	60
Incentive stock liability for raw material supply agreement	239	317
Equity issuance costs		25
Issuance of common stock for acquisitions	15,310	61,085
Contingent consideration for acquisitions	5,000	45,950
Debt assumed in acquisition	5,225	113,553
Gain on redemption of preferred stock		$ 378
Accruals of insurance proceeds related to impairment of property, plant and equipment	$ 11,027

Basis of Presentation and Natur

Basis of Presentation and Nature of the Business	9 Months Ended
	Sep. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Nature of the Business	BASIS OF PRESENTATION AND NATURE OF THE BUSINESS The condensed consolidated financial statements have been prepared by Renewable Energy Group, Inc. and its subsidiaries (the Company), pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (SEC). Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) have been condensed or omitted as permitted by such rules and regulations. All adjustments, consisting of normal recurring adjustments, have been included. Management believes that the disclosures are adequate to present fairly the financial position, results of operations and cash flows at the dates and for the periods presented. It is suggested that these interim financial statements be read in conjunction with the consolidated financial statements and the notes thereto appearing in the Company’s latest annual report on Form 10-K filed on March 6, 2015. Results for interim periods are not necessarily indicative of those to be expected for the fiscal year. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts and related disclosures. Actual results could differ from those estimates. As of September 30, 2015 , the Company operates a network of ten operating biomass-based diesel production facilities with aggregate nameplate production capacity of 432 million gallons per year, or mmgy, which includes the addition of a 100 -million gallon nameplate capacity biomass-based diesel refinery at the Port of Grays Harbor, Washington resulting from its acquisition of substantially all the assets of Imperium Renewables, Inc. in August 2015. A number of these plants are “multi-feedstock capable” which allows them to use a broad range of lower cost feedstocks, such as inedible corn oil, used cooking oil and inedible animal fats in addition to vegetable oils, such as soybean oil and canola oil. The Company expanded its business to Europe by acquiring a majority interest in Petrotec AG (Petrotec) in December 2014. Petrotec is a fully-integrated company that produces biodiesel at its two biorefineries in Emden and Oeding, Germany to sell to the European market. The biomass-based diesel industry and the Company’s business have benefited from the continuation of certain federal and state incentives. The federal biodiesel mixture excise tax credit (BTC) expired on December 31, 2014 and it is uncertain whether it will be reinstated. This revocation along with other amendments of any one or more of those laws, could adversely affect the financial results of the Company.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES The Company has disclosed a summary of the Company's significant accounting policies in its Annual Report on Form 10-K for the year ended December 31, 2014 . There have been no material changes from the policies previously disclosed other than those noted below. Restricted Cash At September 30, 2015 , current restricted cash was $0 . At December 31, 2014 , current restricted cash was $12,845 , which was held in certificates of deposit as pledges for a letter of credit to support a subsidiary's trade activities and the Company's tender offer to acquire the remaining interest in Petrotec. Non-current restricted cash consists of $101,315 as of September 30, 2015 and December 31, 2014 , respectively, which is held in a certificate of deposit and pledged to Bank of America, who issued a letter of credit on the Company's behalf to support the payments on the Company's GOZone Bonds. In addition, at September 30, 2015 and December 31, 2014 , non-current restricted cash included amounts of $3,000 and $3,500 , respectively, which is held in a certificate of deposit and pledged to Bank of America, who issued a letter of credit to support a subsidiary's trade activities. The Company classifies restricted cash between current and non-current assets based on the length of time of the restricted use. Accounts Receivable Accounts receivable are carried at invoiced amount less allowance for doubtful accounts. Management estimates the allowance for doubtful accounts based on existing economic conditions, the financial conditions of customers, and the amount and age of past due accounts. Receivables are considered past due if full payment is not received by the contractual due date. Past due accounts are generally written off against the allowance for doubtful accounts only after reasonable collection attempts have been exhausted. At September 30, 2015 , most outstanding receivable amounts related to the 2014 biodiesel mixture excise tax credit reinstatement were received. Property, Plant and Equipment Property, plant and equipment is recorded at cost less accumulated depreciation. Maintenance and repairs are expensed as incurred. Depreciation expense is computed on a straight-line method based upon estimated useful lives of the assets. In April 2015, the Company experienced a fire at its Geismar facility, resulting in the shutdown of the facility. The Company estimated fixed assets of approximately $11,027 were impaired as a result of the fire. As of the date of this report, the Company has received partial proceeds of $6,500 from insurance for the property damage and believes it is probable that it will recover the remaining costs under its insurance policies. As such, the actual receipt was recorded as an offset to the estimated impairment loss. In addition, an amount equal to the remaining estimated impairment loss was recorded as part of accounts receivable on the Condensed Consolidated Balance Sheets at September 30, 2015 and no impact on earnings was recognized. In addition, the Company has received approximately $2,975 as partial proceeds as of the date of this report related to the business interruption portion of the claim reimbursing a portion of lost margin during the repairs of the damages caused by the fire. These proceeds were recorded as an increase in biomass-based diesel sales in the Company's Condensed Consolidated Statements of Operations. In September 2015, another fire occurred at the Geismar facility. The Company is still in the initial stage to estimate the losses caused by this fire. No impairment has been recorded as it cannot be reasonably estimated as of the date of this report. The Company has property damage, business interruption insurance coverages in place and that recoveries under these insurance policies are expected to be probable and as a result, the property damage with respect to this fire is not expected to have a material adverse impact on the Company's financial results. Goodwill Goodwill is tested for impairment annually on July 31 or when impairment indicators exist. Goodwill is allocated and tested for impairment by reporting units. The Company has determined that the reporting units subject to the 2015 goodwill impairment analysis were Biomass-based Diesel; Services; Renewable Chemicals; and Petrotec. The analysis is based on a comparison of the carrying value of the reporting unit to its fair value, determined utilizing both a discounted cash flow methodology and a market comparable methodology. The determination of whether or not the asset has become impaired involves a significant level of judgment in the assumptions underlying the approach used to determine the value of the Company’s reporting units. Changes in estimates of future cash flows caused by items such as unforeseen events or sustained unfavorable changes in market conditions could negatively affect the fair value of the reporting unit’s goodwill asset and result in an impairment charge. The 2015 annual impairment test determined that the fair value of the Biomass-based Diesel reporting unit exceeded its carrying value by approximately 4% and the Services reporting unit exceeded its carrying value by approximately 21% and the Renewable Chemicals reporting unit exceeded its value by approximately 14% , and the Petrotec reporting unit exceeded its value by approximately 26% . Subsequent to our 2015 impairment testing, the Company determined that triggering events have occurred due to the decline in results of operations and decline in stock price during the quarter ended September 30, 2015. Due to the significant effort that is required to determine the implied fair value of the reporting units' goodwill, through assessing revenue growth, operating margin, discount rate assumptions, and the lack of updated market data, the Company is unable to complete a revised impairment analysis as of September 30, 2015. The Company will complete the impairment analysis during fourth quarter and if any impairment would exist, record that during the fourth quarter 2015. No impairment of goodwill was recorded at September 30, 2015 or during 2014. Share Repurchase Programs In February 2015, the Company's board of directors approved a share repurchase program of up to $30,000 of the Company's shares of Common Stock. Shares may be repurchased from time to time in open market transactions, privately negotiated transactions or by other means. The Company accounts for share repurchases using the cost method. Under this method, the cost of the share repurchase is recorded entirely in treasury stock, a contra equity account. During the three and nine months ended September 30, 2015 , the Company repurchased shares of Common Stock in the amounts of $7,794 and $19,313 , respectively, under this share repurchase program. Foreign Currency Transactions and Translation The Company’s reporting and functional currency is U.S. dollars. Monetary assets and liabilities denominated in currencies other than U.S. dollars are remeasured into their respective functional currencies at exchange rates in effect at the balance sheet date. The resulting exchange gain or loss is included in the Company’s Condensed Consolidated Statements of Operations as foreign exchange gain (loss) unless the remeasurement gain or loss relates to an intercompany transaction that is of a long-term investment nature and for which settlement is not planned or anticipated in the foreseeable future. Gains or losses arising from translation of such transactions are reported as a component of accumulated other comprehensive income (loss) in the Company’s Condensed Consolidated Balance Sheets. The Company translates the assets and liabilities of its foreign subsidiaries from their respective functional currencies to U.S. dollars at the appropriate spot rates as of the balance sheet date. Generally, our foreign subsidiaries use the local currency as their functional currency. Changes in the carrying value of these assets and liabilities attributable to fluctuations in spot rates are recognized in foreign currency translation adjustment, a component of accumulated other comprehensive income (loss) in the Company’s Condensed Consolidated Balance Sheets. Income Taxes The Company uses the asset and liability method to account for income taxes. Accordingly, deferred income taxes are recognized for differences between the financial statement and tax bases of assets and liabilities at enacted statutory tax rates in effect for the years in which differences are expected to reverse. Changes in tax rates are recognized directly to the income statement as they arise. Consideration is given to positive and negative evidence related to the realization of the deferred tax assets and valuation allowances are established to reduce deferred tax assets to the amounts expected to be realized. Significant judgment is required in making this assessment. For uncertain tax positions, the Company recognizes tax benefits that are more likely than not to be sustained upon examination by tax authorities. The amount recognized is measured as the largest amount of benefit that is greater than 50 percent likely to be realized. With regard to non-US subsidiaries, the Company will indefinitely reinvest any future earnings outside of the U.S. and currently does not have any undistributed earnings. New Accounting Standards In July 2015, the FASB decided to defer by one year the effective dates of the new revenue recognition standard as provided by the ASU 2014-09, Revenue from Contracts with Customers: Summary and Amendments that Create Revenue from Contracts with Customers and Other Assets and Deferred Costs—Contracts with Customers . Early adoption is permitted for all entities, but not before the original public entity effective date. For public companies, the update will now be effective for interim and annual periods beginning after December 15, 2017. The Company is currently evaluating the impact that this guidance will have on its consolidated financial statements. In September 2015, the FASB issued ASU 2015-16, Business Combinations (Topic 805): Simplifying the Accounting Measurement-Period Adjustments that eliminates the requirement that an acquirer in a business combination account for measurement-period adjustments retrospectively. Instead, a measurement-period adjustment will be recognized in the period in which it determines the amount of the adjustment. The guidance is effective for public business entities for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. The Company is evaluating the impact this guidance will have on its consolidated financial statements.

Acquisitions and Equity Transac

Acquisitions and Equity Transactions	9 Months Ended
	Sep. 30, 2015
Business Combinations [Abstract]
Acquisitions and Equity Transactions	ACQUISITIONS AND EQUITY TRANSACTIONS Imperium Renewables, Inc. On August 19, 2015 , the Company acquired substantially all the assets of Imperium Renewables, Inc. (Imperium), including the 100 -million gallon nameplate biomass-based diesel refinery and deepwater port terminal at the Port of Grays Harbor, Washington. The results of Imperium's operations have been included in the consolidated financial statements since that date. The Company has not completed its initial accounting of this business combination as the valuation of real and personal property,intangible assets and deferred tax assets and liabilities has not been finalized. The following table summarizes the consideration paid for Imperium: August 19, 2015 Consideration at fair value for Imperium: Cash $ 36,748 Common stock 15,310 Contingent consideration 5,000 Total $ 57,058 The fair value of the 1,675,000 shares of Common Stock issued to Imperium was determined using the closing market price of the Company's common shares at the date of acquisition. Subject to achievement of certain milestones related to the biomass-based diesel gallons produced and sold by REG Grays Harbor and whether the BTC is reinstated, Imperium may receive contingent consideration of up to $5,000 (Earnout Payments) over a two -year period after the acquisition. The Earnout Payments will be payable in cash. As of September 30, 2015, the Company has recorded a contingent liability of $5,000 , approximately $2,167 of which has been classified as current on the Condensed Consolidated Balance Sheets. The following table summarizes the estimated fair values of the assets acquired and liabilities assumed at the acquisition date. August 19, 2015 Assets (liabilities) acquired of Imperium: Cash $ 168 Accounts receivable 8,274 Inventory 18,989 Other current assets 87 Property, plant and equipment 46,476 Intangible assets 2,900 Total identifiable assets acquired 76,894 Accounts payable (4,828 ) Accrued expenses and other liabilities (942 ) Debt (5,225 ) Deferred tax liabilities (3,483 ) Total liabilities assumed (14,478 ) Net identifiable assets acquired 62,416 Less: Bargain purchase gain 5,358 Net assets acquired $ 57,058 Imperium was acquired at a price less than fair value of the net identifiable assets, and the Company recorded a provisional net of tax bargain purchase gain of $5,358 , which may be subject for future adjustments. The bargain purchase gain is reported in the "Other Income, Net" line on the Condensed Consolidated Statements of Operations. Prior to recognizing a bargain purchase gain, the Company reassessed whether all assets acquired and liabilities assumed had been correctly identified as well as the key valuation assumptions and business combination accounting procedures for this acquisition. After careful consideration and review, the Company concluded that the recognition of a bargain purchase gain, while still provisional at the date of this report, was appropriate for this acquisition. Factors that contributed to the bargain purchase price were: • The assets were not fully utilized by the seller and that the transaction was completed with a motivated seller that appeared to have recapitalized its investments and desired to exit the facilities that no longer fit its strategy given the uncertainties in the industry. • The Company was able to complete the acquisition in an expedient manner, with a cash payment, stock issuance and without a financial contingency, which was a key attribute for the seller. The relatively small size of the transaction for the Company, the lack of required third-party financing and the Company's expertise in completing similar transactions in the past gave the seller confidence that the Company could complete the transaction quickly and without difficultly. • Due to the unique nature of the products and limited number of potential buyers for this business, the seller found it advantageous to accept the Company's purchase price based upon our demonstrated ability to operate similar businesses, and financial strength that may enable the Company to make improvement and run the business at increased production rates in the long run. The following pro forma condensed combined results of operations assume that the Imperium acquisition was completed as of January 1, 2014. Three Months Three Months Nine Months Nine Months Revenues $ 420,336 $ 443,677 $ 1,117,705 $ 1,058,854 Net income (loss) (16,211 ) 7,929 (58,259 ) 12,038 Basic net income (loss) per share $ (0.36 ) $ 0.18 $ (1.28 ) $ 0.29 Petrotec AG On December 24, 2014 , the Company acquired 69.08% of the outstanding common shares and voting interest of Petrotec. The results of Petrotec’s operations have been included in the consolidated financial statements since that date. The Company has not completed its initial accounting for this business combination as the valuation of the real and personal property and goodwill has not been finalized. The following table summarizes the consideration paid for Petrotec: December 24, 2014 Consideration at fair value for Petrotec: Common stock $ 20,022 The fair value of the 2,070,538 shares of the Company's Common Stock issued for the acquisition was determined on the basis of the closing market price of the Company's Common Stock at the date of acquisition. The following table summarizes the estimated fair values of the assets acquired and liabilities assumed at the acquisition date. December 24, 2014 Assets (liabilities) acquired of Petrotec: Cash $ 13,523 Accounts receivable 4,989 Inventory 9,470 Other current assets 3,583 Property, plant and equipment 25,026 Total identifiable assets acquired 56,591 Accounts payable (8,171 ) Accrued expenses and other liabilities (2,151 ) Debt (16,192 ) Non-current liabilities (1,462 ) Total liabilities assumed (27,976 ) Net identifiable assets acquired 28,615 Goodwill 369 Non-controlling interest (8,962 ) Net assets acquired $ 20,022 The $369 of goodwill was assigned to the Biomass-based diesel segment, all of which is expected to be deductible for income tax purposes. At December 24, 2014, the fair value of the 30.92% noncontrolling interest in Petrotec was estimated to be $8,962 . The fair value of the noncontrolling interest was estimated using a combination of the income approach and a market approach. The Company recognized $1,289 of acquisition-related costs that were expensed in the last quarter of 2014. In addition, during the nine months ended September 30, 2015 , the Company acquired additional common shares of Petrotec as part of the cash tender offer and open market purchases for $4,416 . At September 30, 2015 , the Company owned 85.93% of the outstanding common shares and voting interest of Petrotec. In April 2015, Petrotec's application to de-list its shares of common stock from the Frankfurt Stock Exchange was approved. From the end of the October 8, 2015 trading day, Petrotec's shares of common stock are no longer traded on any regulated market of any stock exchange.

Marketable Securities

Marketable Securities	9 Months Ended
	Sep. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Marketable Securities	MARKETABLE SECURITIES The Company's investments in marketable securities are stated at fair value and are available-for-sale. The following table summarizes the Company's marketable securities: As of September 30, 2015 Maturity Gross Amortized Cost Total Unrealized Gains Total Unrealized Losses Fair Value Commercial paper Within one year $ 2,996 $ 2 $ — $ 2,998 Corporate bonds Within one year 4,036 — (3 ) 4,033 Total $ 7,032 $ 2 $ (3 ) $ 7,031 As of December 31, 2014 Maturity Gross Amortized Cost Total Unrealized Gains Total Unrealized Losses Fair Value Corporate bonds Within one year $ 6,781 $ — $ (6 ) $ 6,775 Certificates of deposit Within one year 10,000 — (5 ) 9,995 Total $ 16,781 $ — $ (11 ) $ 16,770

Inventories

Inventories	9 Months Ended
	Sep. 30, 2015
Inventory Disclosure [Abstract]
Inventories	INVENTORIES Inventories consist of the following: September 30, 2015 December 31, 2014 Raw materials $ 36,842 $ 23,117 Work in process 3,232 2,879 Finished goods 38,833 71,512 Total $ 78,907 $ 97,508

Prepaid Expenses and Other Asse

Prepaid Expenses and Other Assets	9 Months Ended
	Sep. 30, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid Expenses and Other Assets	PREPAID EXPENSES AND OTHER ASSETS Prepaid expense and other assets consist of the following: September 30, 2015 December 31, 2014 Commodity derivatives and related collateral, net $ 6,136 $ 12,938 Prepaid expenses 23,089 7,901 Deposits 3,949 4,481 RIN inventory 12,657 10,795 Taxes receivable 2,040 2,843 Other 2,502 4,177 Total $ 50,373 $ 43,135 RIN inventory values were adjusted in the amounts of $283 and $1,042 at September 30, 2015 and December 31, 2014 , respectively, to reflect the lower of cost or market. Other noncurrent assets consist of the following: September 30, 2015 December 31, 2014 Debt issuance costs (net of accumulated amortization of $2,009 and $1,474, respectively) $ 4,119 $ 5,152 Spare parts inventory 3,410 3,440 Deposits 3,370 4,370 Other 5,978 6,624 Total $ 16,877 $ 19,586

Goodwill

Goodwill	9 Months Ended
	Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	GOODWILL The following table shows the carrying amount of goodwill by reportable unit as of December 31, 2014 and the changes in goodwill for the nine months ended September 30, 2015 : Biomass-based Diesel Services Renewable Chemicals Total Balance, December 31, 2014 $ 137,348 $ 16,080 $ 34,847 $ 188,275 Finalization of purchase accounting 3,202 — — 3,202 Balance, September 30, 2015 $ 140,550 $ 16,080 $ 34,847 $ 191,477

Intangible Assets

Intangible Assets	9 Months Ended
	Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	INTANGIBLE ASSETS Intangible assets consist of the following: September 30, 2015 Cost Accumulated Amortization Net Weighted Average Remaining Life Raw material supply agreement $ 6,152 $ (1,432 ) $ 4,720 10.3 years Renewable hydrocarbon diesel technology 8,300 (738 ) 7,562 13.8 years Ground lease 200 (108 ) 92 6.3 years Acquired customer relationships 2,900 — 2,900 10.0 years Total amortizing intangibles 17,552 (2,278 ) 15,274 In-process research and development, indefinite lives 15,956 — 15,956 Total intangible assets $ 33,508 $ (2,278 ) $ 31,230 December 31, 2014 Cost Accumulated Amortization Net Weighted Average Remaining Life Raw material supply agreement $ 5,914 $ (1,113 ) $ 4,801 11.0 years Renewable hydrocarbon diesel technology 8,300 (323 ) 7,977 14.5 years Ground lease 200 (97 ) 103 6.9 years Total amortizing intangibles 14,414 (1,533 ) 12,881 In-process research and development, indefinite lives 15,956 — 15,956 Total intangible assets $ 30,370 $ (1,533 ) $ 28,837 The Company recorded intangible amortization expense of $257 and $745 for the three and nine months ended September 30, 2015 , respectively, and $583 and $760 for the three and nine months ended September 30, 2014 , respectively. The estimated intangible asset amortization expense for fiscal year 2015 through fiscal year 2021 and thereafter is as follows: October 1, 2015 through December 31, 2015 $ 329 2016 1,330 2017 1,344 2018 1,358 2019 1,373 2020 1,389 2021 and thereafter 8,151 Total $ 15,274

Debt

Debt	9 Months Ended
	Sep. 30, 2015
Debt Disclosure [Abstract]
Debt	DEBT The Company’s debt is as follows: September 30, 2015 December 31, 2014 2.75% Convertible Senior Notes, $143,750 face amount, due in June 2019 $ 124,861 $ 121,354 REG Geismar GOZone bonds, secured, variable interest rate of daily LIBOR, due in October 2033 100,000 100,000 REG Danville term loan, secured, variable interest rate of LIBOR plus 5%, due in December 2017 313 1,513 REG Newton term loan, secured, variable interest rate of LIBOR plus 4%, due in December 2018 17,487 19,868 REG Mason City term loan, fixed interest rate of 5%, due in July 2019 3,902 4,566 REG Ames term loans, secured, fixed interest rates of 3.5% and 4.25%, due in January 2018 and December 2019, respectively 3,984 4,226 REG Grays Harbor term loan, variable interest of minimum of 3.5% or Prime Rate plus 0.25%, due in May 2022 5,225 — Other 1,170 1,402 Total debt $ 256,942 $ 252,929 Revolving Lines of Credit September 30, 2015 December 31, 2014 Amount outstanding under revolving lines of credit $ 22,423 $ 16,679 Maximum available to be borrowed under revolving lines of credit $ 37,544 $ 20,719

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2015
Related Party Transactions [Abstract]
Related Party Transactions	RELATED PARTY TRANSACTIONS The Company reassesses its related parties at reporting dates and has determined that West Central Cooperative (West Central) is no longer a related party as West Central no longer holds ten percent or more of the Company’s outstanding Common Stock nor a board seat on the Company board. Summary of Related Party Balances - Condensed Consolidated Statements of Operations Three Months Three Months Nine Months Nine Months Cost of goods sold – Biomass-based diesel $ — $ 10,490 $ 4,542 $ 31,919 Selling, general and administrative expenses $ — $ 4 $ — $ 43 Summary of Related Party Balances - Condensed Consolidated Balance Sheets As of As of Accounts receivable $ — $ 36 Accounts payable $ — $ 1,101

Derivative Instruments

Derivative Instruments	9 Months Ended
	Sep. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	DERIVATIVE INSTRUMENTS The Company enters into heating oil and soybean oil futures, swaps and options (commodity contract derivatives) to reduce the risk of price volatility related to anticipated purchases of feedstock raw materials and to protect gross profit margins from potentially adverse effects of price volatility on biomass-based diesel sales where prices are set at a future date. All of the Company’s commodity contract derivatives are designated as non-hedge derivatives and recorded at fair value on the Condensed Consolidated Balance Sheets. Unrealized gains and losses are recognized as a component of biomass-based diesel costs of goods sold reflected in current results of operations. As of September 30, 2015 , the Company had 2,967 open commodity contracts. The Company offsets the fair value amounts recognized for its commodity contract derivatives with cash collateral with the same counterparty under a master netting agreement. The net position is presented within prepaid and other assets in the Condensed Consolidated Balance Sheets. The following table sets forth the fair value of the Company's commodity contract derivatives and amounts that offset within the Condensed Consolidated Balance Sheets: September 30, 2015 December 31, 2014 Assets Liabilities Assets Liabilities Gross amounts of derivatives recognized at fair value $ 2,999 $ (680 ) $ 14,901 $ 205 Cash collateral 3,817 — 2,870 4,628 Total gross amount recognized 6,816 (680 ) 17,771 4,833 Gross amounts offset (680 ) 680 (4,833 ) (4,833 ) Net amount reported in the condensed consolidated balance sheet $ 6,136 $ — $ 12,938 $ — The following table sets forth the commodity contract derivatives gains (losses) included in the Condensed Consolidated Statements of Operations: Location of Gain (Loss) Three Months Three Months Nine Months Nine Months Commodity derivatives Cost of goods sold – Biomass-based diesel $ 23,349 $ 19,249 $ 19,358 $ 15,811

Fair Value Measurement

Fair Value Measurement	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurement	FAIR VALUE MEASUREMENT The fair value hierarchy prioritizes the inputs used in measuring fair value as follows: • Level 1 — Quoted prices for identical instruments in active markets. • Level 2 — Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-derived valuations, in which all significant inputs are observable in active markets. • Level 3 — Unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions. A summary of assets (liabilities) measured at fair value is as follows: As of September 30, 2015 Total Level 1 Level 2 Level 3 Money market funds $ 5,002 $ 5,002 $ — $ — Commercial paper 2,998 — 2,998 — Commercial notes/bonds 4,033 — 4,033 — Commodity contract derivatives 2,319 441 1,878 — Contingent consideration for LS9 acquisition (7,258 ) — — (7,258 ) Contingent consideration for Dynamic Fuels acquisition (29,233 ) — — (29,233 ) Contingent consideration for Imperium Renewables, Inc. acquisition (5,000 ) — — (5,000 ) $ (27,139 ) $ 5,443 $ 8,909 $ (41,491 ) As of December 31, 2014 Total Level 1 Level 2 Level 3 Money market funds $ 302 $ 302 $ — $ — Certificates of deposit 9,995 — 9,995 — Commercial notes/bond 6,775 — 6,775 — Commodity contract derivatives 14,696 6,885 7,811 — Contingent consideration for LS9 acquisition (8,624 ) — — (8,624 ) Contingent consideration of Dynamic Fuels acquisition (30,695 ) — — (30,695 ) $ (7,551 ) $ 7,187 $ 24,581 $ (39,319 ) The following is a reconciliation of the beginning and ending balances for liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3): Contingent Consideration for LS9 Acquisition Contingent Consideration for Dynamic Fuels Acquisition Contingent Consideration for Imperium Acquisition Balance at beginning of period, January 1, 2015 $ 8,624 $ 30,695 $ — Change in estimates included in earnings (31 ) 324 — Settlements — (1,052 ) — Balance at end of period, March 31, 2015 8,593 29,967 — Change in estimates included in earnings (2,434 ) 313 — Settlements — (943 ) — Balance at end of period, June 30, 2015 6,159 29,337 — Fair value of contingent consideration at measurement date — — 5,000 Change in estimates included in earnings 1,099 7 — Settlements — (111 ) — Balance at end of period, September 30, 2015 $ 7,258 $ 29,233 $ 5,000 Contingent Consideration for LS9 Acquisition Contingent Consideration for Dynamic Fuels Acquisition Balance at beginning of period, January 1, 2014 $ — $ — Fair value of contingent consideration at measurement date 17,050 — Balance at end of period, March 31, 2014 17,050 — Fair value of contingent consideration at measurement date — 28,900 Change in estimates included in earnings (384 ) — Settlements — — Balance at end of period, June 30, 2014 16,666 28,900 Change in estimates included in earnings (1,192 ) 133 Settlements — — Balance at end of period, September 30, 2014 $ 15,474 $ 29,033 The estimated fair values of the Company’s financial instruments, which are not recorded at fair value, are as follows: As of September 30, 2015 As of December 31, 2014 Asset (Liability) Fair Value Asset (Liability) Fair Value Financial liabilities: Debt and lines of credit $ (279,365 ) $ (277,059 ) $ (269,608 ) $ (270,331 ) The carrying amounts reported in the Condensed Consolidated Balance Sheets for cash and cash equivalents, accounts receivable, accounts payable and accrued expenses approximate their fair values. Money market funds are included in cash and cash equivalents on the Condensed Consolidated Balance Sheets. The Company used the following methods and assumptions to estimate fair value of its financial instruments: Marketable securities : The fair value of marketable securities, which include certificates of deposit, commercial papers and commercial notes/bonds are obtained using quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets in markets that are not active; and inputs other than quoted prices, e.g., interest rates and yield curves. The Company utilizes a pricing service to assist in obtaining fair value pricing for the majority of this investment portfolio. Commodity derivatives: The instruments held by the Company consist primarily of futures contracts, swap agreements, purchased put options and written call options. The fair value of contracts based on quoted prices of identical assets in an active exchange-traded market is reflected in Level 1. Contract fair value that is determined based on quoted prices of similar contracts in over-the-counter markets is reflected in Level 2. Contingent consideration for acquisitions : The fair value of the LS9 contingent consideration is determined using an expected present value technique. Expected cash flows are determined using the probability weighted-average of possible outcomes that would occur should achievement of certain milestones related to the development and commercialization of products from LS9’s technology occur. There is no observable market data available to use in valuing the contingent consideration; therefore, the Company developed its own assumptions related to the expected future delivery of product enhancements to estimate the fair value of these liabilities. An 8.0% discount rate is used to estimate the fair value of the expected payments. The fair value of the Dynamic Fuels contingent consideration is determined using an expected present value technique. Expected cash flows are determined using the probability weighted-average of possible outcomes that would occur should the achievement of certain milestones related to the sale of renewable hydrocarbon diesel at the REG Geismar's production facility. A 5.8% discount rate is used to estimate the fair value of the expected payments. The fair value of the Imperium contingent consideration is determined using the discrete probability technique. Expected earnouts are determined as total present value of the possible outcomes at a discount rate of 10% should the achievement of the production and sales volume at the REG Grays Harbor facility occur post acquisition as well as whether the biodiesel mixture excise tax credit is reinstated. Debt and lines of credit: The fair value of long-term debt and lines of credit was established using discounted cash flow calculations and current market rates reflecting Level 2 inputs.

Net Income (Loss) Per Share

Net Income (Loss) Per Share	9 Months Ended
	Sep. 30, 2015
Earnings Per Share [Abstract]
Net Income (Loss) Per Share	NET INCOME (LOSS) PER SHARE Basic net income (loss) per share is presented in conformity with the two-class method required for participating securities. Participating securities include, or have included, Series B Preferred Stock and restricted stock units (RSUs). Under the two-class method, net income is reduced for distributed and undistributed dividends earned in the current period. The remaining earnings are then allocated to Common Stock and the participating securities. The Company calculates the effects of participating securities on diluted earnings per share (EPS) using both the “if-converted or treasury stock” and "two-class" methods and discloses the method which results in a more dilutive effect. The effects of Common Stock options, warrants, stock appreciation rights and convertible notes on diluted EPS are calculated using the treasury stock method unless the effects are anti-dilutive to EPS. The following potentially dilutive weighted average securities were excluded from the calculation of diluted net income (loss) per share attributable to common stockholders during the periods presented as the effect was anti-dilutive: Three Months Three Months Nine Months Nine Months Options to purchase common stock 87,026 87,026 87,026 87,026 Restricted stock units 709 — 709 — Stock appreciation rights 2,430,414 1,137,743 2,120,550 1,401,144 Warrants to purchase common stock — — — 17,916 Convertible notes 10,838,218 10,838,218 10,838,218 4,764,052 Total 13,356,367 12,062,987 13,046,503 6,270,138 The following table presents the calculation of diluted net loss per share: Three Months Three Months Nine Months Nine Months Net income (loss) attributable to the Company’s common stockholders - Basic $ (15,675 ) $ 4,504 $ (55,783 ) $ 13,362 Plus: distributed dividends to Preferred Stockholders — — — 40 Less: effect of participating securities — — — (406 ) Net income (loss) attributable to common stockholders - Dilutive $ (15,675 ) $ 4,504 $ (55,783 ) $ 12,996 Shares: Weighted-average shares used to compute basic net income (loss) per share 43,844,005 42,374,768 43,979,266 40,216,467 Adjustment to reflect warrants to purchase common stock — 17,916 — — Adjustment to reflect stock appreciation right conversions — 39,321 — 12,462 Weighted-average shares used to compute diluted net income (loss) per share 43,844,005 42,432,005 43,979,266 40,228,929 Net income (loss) per share attributable to common stockholders: Diluted $ (0.36 ) $ 0.11 $ (1.27 ) $ 0.32

Reportable Segments

Reportable Segments	9 Months Ended
	Sep. 30, 2015
Segment Reporting [Abstract]
Reportable Segments	REPORTABLE SEGMENTS The Company reports its reportable segments based on products and services provided to customers, which include Biomass-based diesel, Services and Corporate and other. The Company re-assesses its reportable segments on an annual basis. The accounting policies of the segments are the same as those described in the summary of significant accounting policies. The Company has chosen to differentiate the reportable segments based on the products and services each segment offers. The Biomass-based diesel segment processes waste vegetable oils, animal fats, virgin vegetable oils and other feedstocks and methanol into biomass-based diesel. The Biomass-based diesel segment also includes the Company’s purchases and resale of biomass-based diesel produced by third parties. Revenues are derived from the purchases and sales of biomass-based diesel and raw material feedstocks acquired from third parties, sales of biomass-based diesel produced under toll manufacturing arrangements with third party facilities, sales of processed biomass-based diesel from Company facilities, sales of RINs, related by-products and renewable energy government incentive payments. The Services segment offers services for managing the construction of biomass-based diesel production facilities and managing ongoing operations of internal and third party plants and collects fees related to the services provided. The Company does not allocate items that are of a non-operating nature or corporate expenses to the business segments. Intersegment revenues are reported by the Services segment, which manages the construction and operations of facilities included in the Biomass-based diesel segment. Revenues are recorded by the Services segment at cost. Corporate expenses consist of corporate office expenses including compensation, benefits, occupancy and other administrative costs, including management service expenses. The following table represents the significant items by reportable segment: Three Months Three Months Nine Months Nine Months Net revenues: Biomass-based diesel $ 394,824 $ 384,126 $ 999,371 $ 935,997 Services 31,161 25,422 81,625 72,012 Intersegment revenues (31,129 ) (25,290 ) (81,460 ) (71,793 ) $ 394,856 $ 384,258 $ 999,536 $ 936,216 Income (loss) before income taxes: Biomass-based diesel $ 873 $ 22,603 $ (6,948 ) $ 49,278 Services 5 112 54 152 Corporate and other (a) (17,599 ) (18,391 ) (51,898 ) (48,484 ) $ (16,721 ) $ 4,324 $ (58,792 ) $ 946 Depreciation and amortization expense, net: Biomass-based diesel $ 5,685 $ 3,509 $ 16,187 $ 8,934 Services 79 55 217 148 Corporate and other (a) 653 335 1,973 856 $ 6,417 $ 3,899 $ 18,377 $ 9,938 Cash paid for purchases of property, plant and equipment: Biomass-based diesel $ 31,953 $ 9,749 $ 57,498 $ 40,655 Services 230 12 1,355 643 Corporate and other (a) 1,124 3,508 2,161 4,281 $ 33,307 $ 13,269 $ 61,014 $ 45,579 As of As of Assets: Biomass-based diesel $ 951,207 $ 899,211 Services 21,940 20,750 Corporate and other (b) 199,080 452,927 $ 1,172,227 $ 1,372,888 (a) Corporate and other includes income/(expense) not associated with the reportable segments, such as corporate general and administrative expenses, shared service expenses, interest expense and interest income. (b) Corporate and other includes cash and other assets not associated with the reportable segments, including investments. Geographic Information: The following geographic data include net sales attributed to the countries based on the location of the subsidiary making the sale and long-lived assets based on physical location. Long-lived assets represent the net book value of property, plant and equipment. Three Months Three Months Nine Months Nine Months Net revenues: United States $ 354,079 $ 384,258 $ 890,685 $ 936,216 Foreign 40,777 — 108,851 — $ 394,856 $ 384,258 $ 999,536 $ 936,216 As of As of, September 30, 2015 As of As of, December 31, 2014 Long-lived assets: United States $ 541,297 $ 468,170 Foreign 21,775 25,026 $ 563,072 $ 493,196

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES The Company is involved in legal proceedings in the normal course of business. The Company currently believes that any ultimate liability arising out of such proceedings will not have a material adverse effect on the Company’s financial position, results of operations or cash flows.

Summary of Significant Accoun25

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2015
Accounting Policies [Abstract]
Restricted Cash	Restricted Cash At September 30, 2015 , current restricted cash was $0 . At December 31, 2014 , current restricted cash was $12,845 , which was held in certificates of deposit as pledges for a letter of credit to support a subsidiary's trade activities and the Company's tender offer to acquire the remaining interest in Petrotec. Non-current restricted cash consists of $101,315 as of September 30, 2015 and December 31, 2014 , respectively, which is held in a certificate of deposit and pledged to Bank of America, who issued a letter of credit on the Company's behalf to support the payments on the Company's GOZone Bonds. In addition, at September 30, 2015 and December 31, 2014 , non-current restricted cash included amounts of $3,000 and $3,500 , respectively, which is held in a certificate of deposit and pledged to Bank of America, who issued a letter of credit to support a subsidiary's trade activities. The Company classifies restricted cash between current and non-current assets based on the length of time of the restricted use.
Accounts Receivable	Accounts Receivable Accounts receivable are carried at invoiced amount less allowance for doubtful accounts. Management estimates the allowance for doubtful accounts based on existing economic conditions, the financial conditions of customers, and the amount and age of past due accounts. Receivables are considered past due if full payment is not received by the contractual due date. Past due accounts are generally written off against the allowance for doubtful accounts only after reasonable collection attempts have been exhausted. At September 30, 2015 , most outstanding receivable amounts related to the 2014 biodiesel mixture excise tax credit reinstatement were received.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment is recorded at cost less accumulated depreciation. Maintenance and repairs are expensed as incurred. Depreciation expense is computed on a straight-line method based upon estimated useful lives of the assets. In April 2015, the Company experienced a fire at its Geismar facility, resulting in the shutdown of the facility. The Company estimated fixed assets of approximately $11,027 were impaired as a result of the fire. As of the date of this report, the Company has received partial proceeds of $6,500 from insurance for the property damage and believes it is probable that it will recover the remaining costs under its insurance policies. As such, the actual receipt was recorded as an offset to the estimated impairment loss. In addition, an amount equal to the remaining estimated impairment loss was recorded as part of accounts receivable on the Condensed Consolidated Balance Sheets at September 30, 2015 and no impact on earnings was recognized. In addition, the Company has received approximately $2,975 as partial proceeds as of the date of this report related to the business interruption portion of the claim reimbursing a portion of lost margin during the repairs of the damages caused by the fire. These proceeds were recorded as an increase in biomass-based diesel sales in the Company's Condensed Consolidated Statements of Operations. In September 2015, another fire occurred at the Geismar facility. The Company is still in the initial stage to estimate the losses caused by this fire. No impairment has been recorded as it cannot be reasonably estimated as of the date of this report. The Company has property damage, business interruption insurance coverages in place and that recoveries under these insurance policies are expected to be probable and as a result, the property damage with respect to this fire is not expected to have a material adverse impact on the Company's financial results.
Goodwill	Goodwill Goodwill is tested for impairment annually on July 31 or when impairment indicators exist. Goodwill is allocated and tested for impairment by reporting units. The Company has determined that the reporting units subject to the 2015 goodwill impairment analysis were Biomass-based Diesel; Services; Renewable Chemicals; and Petrotec. The analysis is based on a comparison of the carrying value of the reporting unit to its fair value, determined utilizing both a discounted cash flow methodology and a market comparable methodology. The determination of whether or not the asset has become impaired involves a significant level of judgment in the assumptions underlying the approach used to determine the value of the Company’s reporting units. Changes in estimates of future cash flows caused by items such as unforeseen events or sustained unfavorable changes in market conditions could negatively affect the fair value of the reporting unit’s goodwill asset and result in an impairment charge. The 2015 annual impairment test determined that the fair value of the Biomass-based Diesel reporting unit exceeded its carrying value by approximately 4% and the Services reporting unit exceeded its carrying value by approximately 21% and the Renewable Chemicals reporting unit exceeded its value by approximately 14% , and the Petrotec reporting unit exceeded its value by approximately 26% . Subsequent to our 2015 impairment testing, the Company determined that triggering events have occurred due to the decline in results of operations and decline in stock price during the quarter ended September 30, 2015. Due to the significant effort that is required to determine the implied fair value of the reporting units' goodwill, through assessing revenue growth, operating margin, discount rate assumptions, and the lack of updated market data, the Company is unable to complete a revised impairment analysis as of September 30, 2015. The Company will complete the impairment analysis during fourth quarter and if any impairment would exist, record that during the fourth quarter 2015. No impairment of goodwill was recorded at September 30, 2015 or during 2014.
Share Repurchase Programs	Share Repurchase Programs In February 2015, the Company's board of directors approved a share repurchase program of up to $30,000 of the Company's shares of Common Stock. Shares may be repurchased from time to time in open market transactions, privately negotiated transactions or by other means. The Company accounts for share repurchases using the cost method. Under this method, the cost of the share repurchase is recorded entirely in treasury stock, a contra equity account. During the three and nine months ended September 30, 2015 , the Company repurchased shares of Common Stock in the amounts of $7,794 and $19,313 , respectively, under this share repurchase program.
Foreign Currency Transactions and Translation	Foreign Currency Transactions and Translation The Company’s reporting and functional currency is U.S. dollars. Monetary assets and liabilities denominated in currencies other than U.S. dollars are remeasured into their respective functional currencies at exchange rates in effect at the balance sheet date. The resulting exchange gain or loss is included in the Company’s Condensed Consolidated Statements of Operations as foreign exchange gain (loss) unless the remeasurement gain or loss relates to an intercompany transaction that is of a long-term investment nature and for which settlement is not planned or anticipated in the foreseeable future. Gains or losses arising from translation of such transactions are reported as a component of accumulated other comprehensive income (loss) in the Company’s Condensed Consolidated Balance Sheets. The Company translates the assets and liabilities of its foreign subsidiaries from their respective functional currencies to U.S. dollars at the appropriate spot rates as of the balance sheet date. Generally, our foreign subsidiaries use the local currency as their functional currency. Changes in the carrying value of these assets and liabilities attributable to fluctuations in spot rates are recognized in foreign currency translation adjustment, a component of accumulated other comprehensive income (loss) in the Company’s Condensed Consolidated Balance Sheets.
Income Taxes	Income Taxes The Company uses the asset and liability method to account for income taxes. Accordingly, deferred income taxes are recognized for differences between the financial statement and tax bases of assets and liabilities at enacted statutory tax rates in effect for the years in which differences are expected to reverse. Changes in tax rates are recognized directly to the income statement as they arise. Consideration is given to positive and negative evidence related to the realization of the deferred tax assets and valuation allowances are established to reduce deferred tax assets to the amounts expected to be realized. Significant judgment is required in making this assessment. For uncertain tax positions, the Company recognizes tax benefits that are more likely than not to be sustained upon examination by tax authorities. The amount recognized is measured as the largest amount of benefit that is greater than 50 percent likely to be realized. With regard to non-US subsidiaries, the Company will indefinitely reinvest any future earnings outside of the U.S. and currently does not have any undistributed earnings.
New Accounting Standards	New Accounting Standards In July 2015, the FASB decided to defer by one year the effective dates of the new revenue recognition standard as provided by the ASU 2014-09, Revenue from Contracts with Customers: Summary and Amendments that Create Revenue from Contracts with Customers and Other Assets and Deferred Costs—Contracts with Customers . Early adoption is permitted for all entities, but not before the original public entity effective date. For public companies, the update will now be effective for interim and annual periods beginning after December 15, 2017. The Company is currently evaluating the impact that this guidance will have on its consolidated financial statements. In September 2015, the FASB issued ASU 2015-16, Business Combinations (Topic 805): Simplifying the Accounting Measurement-Period Adjustments that eliminates the requirement that an acquirer in a business combination account for measurement-period adjustments retrospectively. Instead, a measurement-period adjustment will be recognized in the period in which it determines the amount of the adjustment. The guidance is effective for public business entities for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. The Company is evaluating the impact this guidance will have on its consolidated financial statements.

Acquisitions and Equity Trans26

Acquisitions and Equity Transactions (Tables)	9 Months Ended
	Sep. 30, 2015
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Information	The following pro forma condensed combined results of operations assume that the Imperium acquisition was completed as of January 1, 2014. Three Months Three Months Nine Months Nine Months Revenues $ 420,336 $ 443,677 $ 1,117,705 $ 1,058,854 Net income (loss) (16,211 ) 7,929 (58,259 ) 12,038 Basic net income (loss) per share $ (0.36 ) $ 0.18 $ (1.28 ) $ 0.29
Imperium Renewables, Inc.
Business Acquisition [Line Items]
Schedule of Business Acquisitions	The following table summarizes the consideration paid for Imperium: August 19, 2015 Consideration at fair value for Imperium: Cash $ 36,748 Common stock 15,310 Contingent consideration 5,000 Total $ 57,058 The following table summarizes the estimated fair values of the assets acquired and liabilities assumed at the acquisition date. August 19, 2015 Assets (liabilities) acquired of Imperium: Cash $ 168 Accounts receivable 8,274 Inventory 18,989 Other current assets 87 Property, plant and equipment 46,476 Intangible assets 2,900 Total identifiable assets acquired 76,894 Accounts payable (4,828 ) Accrued expenses and other liabilities (942 ) Debt (5,225 ) Deferred tax liabilities (3,483 ) Total liabilities assumed (14,478 ) Net identifiable assets acquired 62,416 Less: Bargain purchase gain 5,358 Net assets acquired $ 57,058
Petrotec AG
Business Acquisition [Line Items]
Schedule of Business Acquisitions	The following table summarizes the estimated fair values of the assets acquired and liabilities assumed at the acquisition date. December 24, 2014 Assets (liabilities) acquired of Petrotec: Cash $ 13,523 Accounts receivable 4,989 Inventory 9,470 Other current assets 3,583 Property, plant and equipment 25,026 Total identifiable assets acquired 56,591 Accounts payable (8,171 ) Accrued expenses and other liabilities (2,151 ) Debt (16,192 ) Non-current liabilities (1,462 ) Total liabilities assumed (27,976 ) Net identifiable assets acquired 28,615 Goodwill 369 Non-controlling interest (8,962 ) Net assets acquired $ 20,022 The following table summarizes the consideration paid for Petrotec: December 24, 2014 Consideration at fair value for Petrotec: Common stock $ 20,022

Marketable Securities (Tables)

Marketable Securities (Tables)	9 Months Ended
	Sep. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Marketable Securities	The Company's investments in marketable securities are stated at fair value and are available-for-sale. The following table summarizes the Company's marketable securities: As of September 30, 2015 Maturity Gross Amortized Cost Total Unrealized Gains Total Unrealized Losses Fair Value Commercial paper Within one year $ 2,996 $ 2 $ — $ 2,998 Corporate bonds Within one year 4,036 — (3 ) 4,033 Total $ 7,032 $ 2 $ (3 ) $ 7,031 As of December 31, 2014 Maturity Gross Amortized Cost Total Unrealized Gains Total Unrealized Losses Fair Value Corporate bonds Within one year $ 6,781 $ — $ (6 ) $ 6,775 Certificates of deposit Within one year 10,000 — (5 ) 9,995 Total $ 16,781 $ — $ (11 ) $ 16,770

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2015
Inventory Disclosure [Abstract]
Inventories	Inventories consist of the following: September 30, 2015 December 31, 2014 Raw materials $ 36,842 $ 23,117 Work in process 3,232 2,879 Finished goods 38,833 71,512 Total $ 78,907 $ 97,508

Prepaid Expenses and Other As29

Prepaid Expenses and Other Assets (Tables)	9 Months Ended
	Sep. 30, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Summary of Prepaid Expense and Other Assets	Prepaid expense and other assets consist of the following: September 30, 2015 December 31, 2014 Commodity derivatives and related collateral, net $ 6,136 $ 12,938 Prepaid expenses 23,089 7,901 Deposits 3,949 4,481 RIN inventory 12,657 10,795 Taxes receivable 2,040 2,843 Other 2,502 4,177 Total $ 50,373 $ 43,135
Summary of other noncurrent assets	Other noncurrent assets consist of the following: September 30, 2015 December 31, 2014 Debt issuance costs (net of accumulated amortization of $2,009 and $1,474, respectively) $ 4,119 $ 5,152 Spare parts inventory 3,410 3,440 Deposits 3,370 4,370 Other 5,978 6,624 Total $ 16,877 $ 19,586

Goodwill (Tables)

Goodwill (Tables)	9 Months Ended
	Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Carrying amount of goodwill	The following table shows the carrying amount of goodwill by reportable unit as of December 31, 2014 and the changes in goodwill for the nine months ended September 30, 2015 : Biomass-based Diesel Services Renewable Chemicals Total Balance, December 31, 2014 $ 137,348 $ 16,080 $ 34,847 $ 188,275 Finalization of purchase accounting 3,202 — — 3,202 Balance, September 30, 2015 $ 140,550 $ 16,080 $ 34,847 $ 191,477

Intangible Assets (Tables)

Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Components of Intangible assets	Intangible assets consist of the following: September 30, 2015 Cost Accumulated Amortization Net Weighted Average Remaining Life Raw material supply agreement $ 6,152 $ (1,432 ) $ 4,720 10.3 years Renewable hydrocarbon diesel technology 8,300 (738 ) 7,562 13.8 years Ground lease 200 (108 ) 92 6.3 years Acquired customer relationships 2,900 — 2,900 10.0 years Total amortizing intangibles 17,552 (2,278 ) 15,274 In-process research and development, indefinite lives 15,956 — 15,956 Total intangible assets $ 33,508 $ (2,278 ) $ 31,230 December 31, 2014 Cost Accumulated Amortization Net Weighted Average Remaining Life Raw material supply agreement $ 5,914 $ (1,113 ) $ 4,801 11.0 years Renewable hydrocarbon diesel technology 8,300 (323 ) 7,977 14.5 years Ground lease 200 (97 ) 103 6.9 years Total amortizing intangibles 14,414 (1,533 ) 12,881 In-process research and development, indefinite lives 15,956 — 15,956 Total intangible assets $ 30,370 $ (1,533 ) $ 28,837
Estimated amortization expense	The estimated intangible asset amortization expense for fiscal year 2015 through fiscal year 2021 and thereafter is as follows: October 1, 2015 through December 31, 2015 $ 329 2016 1,330 2017 1,344 2018 1,358 2019 1,373 2020 1,389 2021 and thereafter 8,151 Total $ 15,274

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2015
Debt Disclosure [Abstract]
Company's Borrowings	The Company’s debt is as follows: September 30, 2015 December 31, 2014 2.75% Convertible Senior Notes, $143,750 face amount, due in June 2019 $ 124,861 $ 121,354 REG Geismar GOZone bonds, secured, variable interest rate of daily LIBOR, due in October 2033 100,000 100,000 REG Danville term loan, secured, variable interest rate of LIBOR plus 5%, due in December 2017 313 1,513 REG Newton term loan, secured, variable interest rate of LIBOR plus 4%, due in December 2018 17,487 19,868 REG Mason City term loan, fixed interest rate of 5%, due in July 2019 3,902 4,566 REG Ames term loans, secured, fixed interest rates of 3.5% and 4.25%, due in January 2018 and December 2019, respectively 3,984 4,226 REG Grays Harbor term loan, variable interest of minimum of 3.5% or Prime Rate plus 0.25%, due in May 2022 5,225 — Other 1,170 1,402 Total debt $ 256,942 $ 252,929
Revolving Line of Credit	Revolving Lines of Credit September 30, 2015 December 31, 2014 Amount outstanding under revolving lines of credit $ 22,423 $ 16,679 Maximum available to be borrowed under revolving lines of credit $ 37,544 $ 20,719

Related Party Transactions (Tab

Related Party Transactions (Tables)	9 Months Ended
	Sep. 30, 2015
Related Party Transactions [Abstract]
Summary of Related Party Transactions	The Company reassesses its related parties at reporting dates and has determined that West Central Cooperative (West Central) is no longer a related party as West Central no longer holds ten percent or more of the Company’s outstanding Common Stock nor a board seat on the Company board. Summary of Related Party Balances - Condensed Consolidated Statements of Operations Three Months Three Months Nine Months Nine Months Cost of goods sold – Biomass-based diesel $ — $ 10,490 $ 4,542 $ 31,919 Selling, general and administrative expenses $ — $ 4 $ — $ 43
Summary of Related Party Balances	Summary of Related Party Balances - Condensed Consolidated Balance Sheets As of As of Accounts receivable $ — $ 36 Accounts payable $ — $ 1,101

Derivative Instruments (Tables)

Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Derivative Financial Instruments by Balance Sheet Location	The following table sets forth the fair value of the Company's commodity contract derivatives and amounts that offset within the Condensed Consolidated Balance Sheets: September 30, 2015 December 31, 2014 Assets Liabilities Assets Liabilities Gross amounts of derivatives recognized at fair value $ 2,999 $ (680 ) $ 14,901 $ 205 Cash collateral 3,817 — 2,870 4,628 Total gross amount recognized 6,816 (680 ) 17,771 4,833 Gross amounts offset (680 ) 680 (4,833 ) (4,833 ) Net amount reported in the condensed consolidated balance sheet $ 6,136 $ — $ 12,938 $ —
Summary of Derivative Financial Instruments by Location of Gain (Loss)	The following table sets forth the commodity contract derivatives gains (losses) included in the Condensed Consolidated Statements of Operations: Location of Gain (Loss) Three Months Three Months Nine Months Nine Months Commodity derivatives Cost of goods sold – Biomass-based diesel $ 23,349 $ 19,249 $ 19,358 $ 15,811

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Assets (Liabilities) Measured at Fair Value	A summary of assets (liabilities) measured at fair value is as follows: As of September 30, 2015 Total Level 1 Level 2 Level 3 Money market funds $ 5,002 $ 5,002 $ — $ — Commercial paper 2,998 — 2,998 — Commercial notes/bonds 4,033 — 4,033 — Commodity contract derivatives 2,319 441 1,878 — Contingent consideration for LS9 acquisition (7,258 ) — — (7,258 ) Contingent consideration for Dynamic Fuels acquisition (29,233 ) — — (29,233 ) Contingent consideration for Imperium Renewables, Inc. acquisition (5,000 ) — — (5,000 ) $ (27,139 ) $ 5,443 $ 8,909 $ (41,491 ) As of December 31, 2014 Total Level 1 Level 2 Level 3 Money market funds $ 302 $ 302 $ — $ — Certificates of deposit 9,995 — 9,995 — Commercial notes/bond 6,775 — 6,775 — Commodity contract derivatives 14,696 6,885 7,811 — Contingent consideration for LS9 acquisition (8,624 ) — — (8,624 ) Contingent consideration of Dynamic Fuels acquisition (30,695 ) — — (30,695 ) $ (7,551 ) $ 7,187 $ 24,581 $ (39,319 )
Liabilities Measured at Fair Value on a Recurring Basis	The following is a reconciliation of the beginning and ending balances for liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3): Contingent Consideration for LS9 Acquisition Contingent Consideration for Dynamic Fuels Acquisition Contingent Consideration for Imperium Acquisition Balance at beginning of period, January 1, 2015 $ 8,624 $ 30,695 $ — Change in estimates included in earnings (31 ) 324 — Settlements — (1,052 ) — Balance at end of period, March 31, 2015 8,593 29,967 — Change in estimates included in earnings (2,434 ) 313 — Settlements — (943 ) — Balance at end of period, June 30, 2015 6,159 29,337 — Fair value of contingent consideration at measurement date — — 5,000 Change in estimates included in earnings 1,099 7 — Settlements — (111 ) — Balance at end of period, September 30, 2015 $ 7,258 $ 29,233 $ 5,000 Contingent Consideration for LS9 Acquisition Contingent Consideration for Dynamic Fuels Acquisition Balance at beginning of period, January 1, 2014 $ — $ — Fair value of contingent consideration at measurement date 17,050 — Balance at end of period, March 31, 2014 17,050 — Fair value of contingent consideration at measurement date — 28,900 Change in estimates included in earnings (384 ) — Settlements — — Balance at end of period, June 30, 2014 16,666 28,900 Change in estimates included in earnings (1,192 ) 133 Settlements — — Balance at end of period, September 30, 2014 $ 15,474 $ 29,033
Estimated Fair Values of the Company's Financial Instruments	The estimated fair values of the Company’s financial instruments, which are not recorded at fair value, are as follows: As of September 30, 2015 As of December 31, 2014 Asset (Liability) Fair Value Asset (Liability) Fair Value Financial liabilities: Debt and lines of credit $ (279,365 ) $ (277,059 ) $ (269,608 ) $ (270,331 )

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	9 Months Ended
	Sep. 30, 2015
Earnings Per Share [Abstract]
Dilutive weighted average securities were excluded from the calculation of diluted net income (loss) per share attributable to common stockholders during the periods	The following potentially dilutive weighted average securities were excluded from the calculation of diluted net income (loss) per share attributable to common stockholders during the periods presented as the effect was anti-dilutive: Three Months Three Months Nine Months Nine Months Options to purchase common stock 87,026 87,026 87,026 87,026 Restricted stock units 709 — 709 — Stock appreciation rights 2,430,414 1,137,743 2,120,550 1,401,144 Warrants to purchase common stock — — — 17,916 Convertible notes 10,838,218 10,838,218 10,838,218 4,764,052 Total 13,356,367 12,062,987 13,046,503 6,270,138
Calculation of diluted net income per share	The following table presents the calculation of diluted net loss per share: Three Months Three Months Nine Months Nine Months Net income (loss) attributable to the Company’s common stockholders - Basic $ (15,675 ) $ 4,504 $ (55,783 ) $ 13,362 Plus: distributed dividends to Preferred Stockholders — — — 40 Less: effect of participating securities — — — (406 ) Net income (loss) attributable to common stockholders - Dilutive $ (15,675 ) $ 4,504 $ (55,783 ) $ 12,996 Shares: Weighted-average shares used to compute basic net income (loss) per share 43,844,005 42,374,768 43,979,266 40,216,467 Adjustment to reflect warrants to purchase common stock — 17,916 — — Adjustment to reflect stock appreciation right conversions — 39,321 — 12,462 Weighted-average shares used to compute diluted net income (loss) per share 43,844,005 42,432,005 43,979,266 40,228,929 Net income (loss) per share attributable to common stockholders: Diluted $ (0.36 ) $ 0.11 $ (1.27 ) $ 0.32

Reportable Segments (Tables)

Reportable Segments (Tables)	9 Months Ended
	Sep. 30, 2015
Segment Reporting [Abstract]
Segment for the Results of Operations	The following table represents the significant items by reportable segment: Three Months Three Months Nine Months Nine Months Net revenues: Biomass-based diesel $ 394,824 $ 384,126 $ 999,371 $ 935,997 Services 31,161 25,422 81,625 72,012 Intersegment revenues (31,129 ) (25,290 ) (81,460 ) (71,793 ) $ 394,856 $ 384,258 $ 999,536 $ 936,216 Income (loss) before income taxes: Biomass-based diesel $ 873 $ 22,603 $ (6,948 ) $ 49,278 Services 5 112 54 152 Corporate and other (a) (17,599 ) (18,391 ) (51,898 ) (48,484 ) $ (16,721 ) $ 4,324 $ (58,792 ) $ 946 Depreciation and amortization expense, net: Biomass-based diesel $ 5,685 $ 3,509 $ 16,187 $ 8,934 Services 79 55 217 148 Corporate and other (a) 653 335 1,973 856 $ 6,417 $ 3,899 $ 18,377 $ 9,938 Cash paid for purchases of property, plant and equipment: Biomass-based diesel $ 31,953 $ 9,749 $ 57,498 $ 40,655 Services 230 12 1,355 643 Corporate and other (a) 1,124 3,508 2,161 4,281 $ 33,307 $ 13,269 $ 61,014 $ 45,579 As of As of Assets: Biomass-based diesel $ 951,207 $ 899,211 Services 21,940 20,750 Corporate and other (b) 199,080 452,927 $ 1,172,227 $ 1,372,888 (a) Corporate and other includes income/(expense) not associated with the reportable segments, such as corporate general and administrative expenses, shared service expenses, interest expense and interest income. (b) Corporate and other includes cash and other assets not associated with the reportable segments, including investments.
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas	The following geographic data include net sales attributed to the countries based on the location of the subsidiary making the sale and long-lived assets based on physical location. Long-lived assets represent the net book value of property, plant and equipment. Three Months Three Months Nine Months Nine Months Net revenues: United States $ 354,079 $ 384,258 $ 890,685 $ 936,216 Foreign 40,777 — 108,851 — $ 394,856 $ 384,258 $ 999,536 $ 936,216 As of As of, September 30, 2015 As of As of, December 31, 2014 Long-lived assets: United States $ 541,297 $ 468,170 Foreign 21,775 25,026 $ 563,072 $ 493,196

Basis of Presentation and Nat38

Basis of Presentation and Nature of the Business (Details) gal in Millions	9 Months Ended
	Sep. 30, 2015facilitybiorefinerygal	Aug. 19, 2015gal
Class of Stock [Line Items]
Number of operating biodiesel production facilities | facility	10
Production capacity per year	432
Imperium Renewables, Inc.
Class of Stock [Line Items]
Production capacity per year	100	100
Petrotec AG
Class of Stock [Line Items]
Number of biorefineries | biorefinery	2

Summary of Significant Accoun39

Summary of Significant Accounting Policies (Details) - USD ($)	1 Months Ended	3 Months Ended	6 Months Ended	9 Months Ended
	Apr. 30, 2015	Sep. 30, 2015	Sep. 30, 2015	Sep. 30, 2015	Feb. 28, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Current restricted cash		$ 0	$ 0	$ 0		$ 12,845,000
Restricted cash		104,315,000	104,315,000	104,315,000		104,815,000
Estimated impaired fixed assets	$ 11,027,000
Insurance recoveries			6,500,000
Proceeds from business interruption insurance			2,975,000
Share repurchase program, amount authorized to be repurchased					$ 30,000,000
Share repurchased program, amount repurchased		7,794,000		$ 19,313,000
Biomass-based diesel
Business Acquisition [Line Items]
Minimum percentage of increase in fair value of goodwill over carrying value				4.00%
Services
Business Acquisition [Line Items]
Minimum percentage of increase in fair value of goodwill over carrying value				21.00%
Renewable Chemicals
Business Acquisition [Line Items]
Minimum percentage of increase in fair value of goodwill over carrying value				14.00%
Petrotec
Business Acquisition [Line Items]
Minimum percentage of increase in fair value of goodwill over carrying value				26.00%
REG Geismar GOZone bonds
Business Acquisition [Line Items]
Restricted cash		101,315,000	101,315,000	$ 101,315,000		101,315,000
REG Energy Services
Business Acquisition [Line Items]
Restricted cash		$ 3,000,000	$ 3,000,000	$ 3,000,000		$ 3,500,000

Acquisitions and Equity Trans40

Acquisitions and Equity Transactions (Details Textual) $ in Thousands, gal in Millions	Aug. 19, 2015USD ($)sharesgal	Dec. 24, 2014USD ($)shares	Dec. 31, 2014USD ($)	Sep. 30, 2015USD ($)gal	Sep. 30, 2014USD ($)
Business Acquisition [Line Items]
Production capacity per year | gal				432
Contingent consideration for acquisitions			$ 30,091	$ 34,059
Bargain purchase gain				5,358	$ 0
Goodwill			188,275	$ 191,477
Imperium Renewables, Inc.
Business Acquisition [Line Items]
Production capacity per year | gal	100			100
Shares of common stock issued | shares	1,675,000
Contingent consideration for acquisitions	$ 5,000			$ 5,000
Earnout payment period	2 years
Current contingent liability				2,167
Bargain purchase gain				$ 5,358
Cash	$ 36,748
Fair value of noncontrolling interest	$ 57,058
Petrotec AG
Business Acquisition [Line Items]
Shares of common stock issued | shares		2,070,538
Equity interest		69.08%		85.93%
Cash				$ 4,416
Goodwill		$ 369
Noncontrolling interest percent		30.92%
Fair value of noncontrolling interest		$ 8,962
Acquisition related costs			$ 1,289

Acquisitions and Equity Trans41

Acquisitions and Equity Transactions (Details) - USD ($) $ in Thousands	Aug. 19, 2015	Dec. 24, 2014	Sep. 30, 2015	Dec. 31, 2014
Assets (liabilities) acquired:
Goodwill			$ 191,477	$ 188,275
Imperium Renewables, Inc.
Business Acquisition [Line Items]
Cash	$ 36,748
Common stock	15,310
Contingent consideration	5,000
Total	57,058
Assets (liabilities) acquired:
Cash	168
Accounts receivable	8,274
Inventory	18,989
Other current assets	87
Property, plant and equipment	46,476
Intangible assets	2,900
Total identifiable assets acquired	76,894
Accounts payable	(4,828)
Other current liabilities	(942)
Debt	(5,225)
Deferred tax liabilities	3,483
Total liabilities assumed	(14,478)
Net identifiable assets acquired	62,416
Less: Bargain purchase gain	5,358
Non-controlling interest	$ (57,058)
Petrotec AG
Business Acquisition [Line Items]
Cash			$ 4,416
Common stock		$ 20,022
Assets (liabilities) acquired:
Cash		13,523
Accounts receivable		4,989
Inventory		9,470
Other current assets		3,583
Property, plant and equipment		25,026
Total identifiable assets acquired		56,591
Accounts payable		(8,171)
Other current liabilities		(2,151)
Debt		(16,192)
Other noncurrent liabilities		(1,462)
Total liabilities assumed		(27,976)
Net identifiable assets acquired		28,615
Goodwill		369
Non-controlling interest		(8,962)
Net assets acquired		$ 20,022

Acquisitions and Equity Trans42

Acquisitions and Equity Transactions (Pro Forma) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Business Combinations [Abstract]
Revenues	$ 420,336	$ 443,677	$ 1,117,705	$ 1,058,854
Net income (loss)	$ (16,211)	$ 7,929	$ (58,259)	$ 12,038
Basic net income (loss) per share (in dollars per share)	$ (0.36)	$ 0.18	$ (1.28)	$ 0.29

Marketable Securities (Details)

Marketable Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Gross Amortized Cost	$ 7,032	$ 16,781
Total Unrealized Gains	2	0
Total Unrealized Losses	(3)	(11)
Fair Value	7,031	16,770
Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Gross Amortized Cost	2,996
Total Unrealized Gains	2
Total Unrealized Losses	0
Fair Value	2,998
Corporate bonds
Schedule of Available-for-sale Securities [Line Items]
Gross Amortized Cost	4,036	6,781
Total Unrealized Gains	0	0
Total Unrealized Losses	(3)	(6)
Fair Value	$ 4,033	6,775
Certificates of deposit
Schedule of Available-for-sale Securities [Line Items]
Gross Amortized Cost		10,000
Total Unrealized Gains		0
Total Unrealized Losses		(5)
Fair Value		$ 9,995

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Inventories
Raw materials	$ 36,842	$ 23,117
Work in process	3,232	2,879
Finished goods	38,833	71,512
Total	$ 78,907	$ 97,508

Prepaid Expenses and Other As45

Prepaid Expenses and Other Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Summary of prepaid expense and other assets
Commodity derivatives and related collateral, net	$ 6,136	$ 12,938
Prepaid expenses	23,089	7,901
Deposits	3,949	4,481
RIN inventory	12,657	10,795
Taxes receivable	2,040	2,843
Other	2,502	4,177
Total	$ 50,373	$ 43,135

Prepaid Expenses and Other As46

Prepaid Expenses and Other Assets (Details Textual) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Other Assets [Abstract]
Inventory reduced to lower of cost or market	$ 283	$ 1,042
Accumulated amortization, debt issuance costs	$ 2,009	$ 1,474

Prepaid Expenses and Other As47

Prepaid Expenses and Other Assets (Details 1) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Debt issuance costs (net of accumulated amortization of $2,009 and $1,474, respectively)	$ 4,119	$ 5,152
Spare parts inventory	3,410	3,440
Deposits	3,370	4,370
Other	5,978	6,624
Total	$ 16,877	$ 19,586

Goodwill (Details)

Goodwill (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2015USD ($)
Goodwill [Roll Forward]
Balance	$ 188,275
Finalization of purchase accounting	3,202
Balance	191,477
Biomass-based diesel
Goodwill [Roll Forward]
Balance	137,348
Finalization of purchase accounting	3,202
Balance	140,550
Services
Goodwill [Roll Forward]
Balance	16,080
Finalization of purchase accounting	0
Balance	16,080
Renewable Chemicals
Goodwill [Roll Forward]
Balance	34,847
Finalization of purchase accounting	0
Balance	$ 34,847

Intangible Assets (Details)

Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Cost, finite-lived	$ 17,552	$ 14,414
Accumulated Amortization, finite-lived	(2,278)	(1,533)
Total	15,274	12,881
Cost, indefinite lived	33,508	30,370
Accumulated Amortization, indefinite-lived	(2,278)	(1,533)
Net, indefinite-lived	31,230	28,837
In-process research and development, indefinite lives
Finite-Lived Intangible Assets [Line Items]
Cost, indefinite lived	15,956	15,956
Accumulated Amortization, indefinite-lived	0	0
Net, indefinite-lived	15,956	15,956
Raw material supply agreement
Finite-Lived Intangible Assets [Line Items]
Cost, finite-lived	6,152	5,914
Accumulated Amortization, finite-lived	(1,432)	(1,113)
Total	$ 4,720	$ 4,801
Weighted Average Remaining Life	10 years 3 months	11 years
Renewable hydrocarbon diesel technology
Finite-Lived Intangible Assets [Line Items]
Cost, finite-lived	$ 8,300	$ 8,300
Accumulated Amortization, finite-lived	(738)	(323)
Total	$ 7,562	$ 7,977
Weighted Average Remaining Life	13 years 9 months	14 years 6 months
Ground lease
Finite-Lived Intangible Assets [Line Items]
Cost, finite-lived	$ 200	$ 200
Accumulated Amortization, finite-lived	(108)	(97)
Total	$ 92	$ 103
Weighted Average Remaining Life	6 years 3 months 24 days	6 years 10 months 24 days
Acquired customer relationships
Finite-Lived Intangible Assets [Line Items]
Cost, finite-lived	$ 2,900
Accumulated Amortization, finite-lived	0
Total	$ 2,900
Weighted Average Remaining Life	10 years

Intangible Assets (Details Text

Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible amortization expense	$ 257	$ 583	$ 745	$ 760

Intangible Assets (Details 1)

Intangible Assets (Details 1) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Estimated amortization expense
October 1, 2015 through December 31, 2015	$ 329
2,016	1,330
2,017	1,344
2,018	1,358
2,019	1,373
2,020	1,389
2021 and thereafter	8,151
Total	$ 15,274	$ 12,881

Debt (Details)

Debt (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Company's borrowings
Total notes payable	$ 256,942,000	$ 252,929,000
Convertible Senior Notes
Line of Credit Facility [Line Items]
Interest rate	2.75%	2.75%
Face amount	$ 143,750,000	$ 143,750,000
Company's borrowings
Total notes payable	124,861,000	121,354,000
REG Geismar GOZone bonds
Company's borrowings
Total notes payable	$ 100,000,000	$ 100,000,000
REG Danville term loan
Line of Credit Facility [Line Items]
Description of variable rate basis	LIBOR plus 5% per annum	LIBOR plus 5% per annum
Company's borrowings
Total notes payable	$ 313,000	$ 1,513,000
REG Danville term loan | LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable rate	5.00%	5.00%
REG Newton term loan
Line of Credit Facility [Line Items]
Description of variable rate basis	LIBOR plus 4% per annum	LIBOR plus 4% per annum
Company's borrowings
Total notes payable	$ 17,487,000	$ 19,868,000
REG Newton term loan | LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable rate	4.00%	4.00%
REG Mason City term loan
Line of Credit Facility [Line Items]
Interest rate	5.00%	5.00%
Company's borrowings
Total notes payable	$ 3,902,000	$ 4,566,000
REG Ames term loans
Company's borrowings
Total notes payable	$ 3,984,000	$ 4,226,000
REG Ames term loans | Minimum
Line of Credit Facility [Line Items]
Interest rate	3.50%	3.50%
REG Ames term loans | Maximum
Line of Credit Facility [Line Items]
Interest rate	4.25%	4.25%
REG Grays Harbor term loan
Line of Credit Facility [Line Items]
Description of variable rate basis	Prime Rate plus 0.25%	Prime Rate plus 0.25%
Basis spread on variable rate	3.50%	3.50%
Company's borrowings
Total notes payable	$ 5,225,000	$ 0
REG Grays Harbor term loan | Prime Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.25%	0.25%
Other
Company's borrowings
Total notes payable	$ 1,170,000	$ 1,402,000

Debt (Details 1)

Debt (Details 1) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Debt Disclosure [Abstract]
Amount outstanding under revolving lines of credit	$ 22,423	$ 16,679
Maximum available to be borrowed under revolving lines of credit	$ 37,544	$ 20,719

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Related Party Transactions [Abstract]
Cost of goods sold – Biomass-based diesel	$ 0	$ 10,490	$ 4,542	$ 31,919
Selling, general and administrative expenses	$ 0	$ 4	$ 0	$ 43

Related Party Transactions (D55

Related Party Transactions (Details 1) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Related Party Transactions [Abstract]
Accounts receivable	$ 0	$ 36
Accounts payable	$ 0	$ 1,101

Derivative Instruments (Details

Derivative Instruments (Details Textual)	Sep. 30, 2015Contract
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Open commodity contracts	2,967

Derivative Instruments (Detai57

Derivative Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Assets
Gross amounts of derivatives recognized at fair value	$ 2,999	$ 14,901
Cash collateral	3,817	2,870
Total gross amount recognized	6,816	17,771
Gross amounts offset	(680)	(4,833)
Net amount reported in the condensed consolidated balance sheet	6,136	12,938
Liabilities
Gross amounts of derivatives recognized at fair value	(680)	205
Cash collateral	0	4,628
Total gross amount recognized	(680)	4,833
Gross amounts offset	680	(4,833)
Net amount reported in the condensed consolidated balance sheet	$ 0	$ 0

Derivative Instruments (Detai58

Derivative Instruments (Details 1) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Cost of goods sold – Biodiesel | Commodity derivatives
Derivative Instruments Gain Loss [Line Items]
Pre-tax gains (losses) included in the condensed consolidated statement of operations	$ 23,349	$ 19,249	$ 19,358	$ 15,811

Fair Value Measurement (Details

Fair Value Measurement (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Assets (liabilities) measured at fair value
Total, fair value	$ (27,139)	$ (7,551)
Level 1
Assets (liabilities) measured at fair value
Total, fair value	5,443	7,187
Level 2
Assets (liabilities) measured at fair value
Total, fair value	8,909	24,581
Level 3
Assets (liabilities) measured at fair value
Total, fair value	(41,491)	(39,319)
Commodity contract derivatives
Assets (liabilities) measured at fair value
Assets, fair value	2,319	14,696
Commodity contract derivatives | Level 1
Assets (liabilities) measured at fair value
Assets, fair value	441	6,885
Commodity contract derivatives | Level 2
Assets (liabilities) measured at fair value
Assets, fair value	1,878	7,811
Commodity contract derivatives | Level 3
Assets (liabilities) measured at fair value
Assets, fair value	0	0
Contingent consideration for acquisition | LS9, Inc.
Assets (liabilities) measured at fair value
Liabilities, fair value	(7,258)	(8,624)
Contingent consideration for acquisition | LS9, Inc. | Level 1
Assets (liabilities) measured at fair value
Liabilities, fair value	0	0
Contingent consideration for acquisition | LS9, Inc. | Level 2
Assets (liabilities) measured at fair value
Liabilities, fair value	0	0
Contingent consideration for acquisition | LS9, Inc. | Level 3
Assets (liabilities) measured at fair value
Liabilities, fair value	(7,258)	(8,624)
Contingent consideration for acquisition | Dynamic Fuels, LLC
Assets (liabilities) measured at fair value
Liabilities, fair value	(29,233)	(30,695)
Contingent consideration for acquisition | Dynamic Fuels, LLC | Level 1
Assets (liabilities) measured at fair value
Liabilities, fair value	0	0
Contingent consideration for acquisition | Dynamic Fuels, LLC | Level 2
Assets (liabilities) measured at fair value
Liabilities, fair value	0	0
Contingent consideration for acquisition | Dynamic Fuels, LLC | Level 3
Assets (liabilities) measured at fair value
Liabilities, fair value	(29,233)	(30,695)
Contingent consideration for acquisition | Imperium Renewables, Inc.
Assets (liabilities) measured at fair value
Liabilities, fair value	(5,000)
Contingent consideration for acquisition | Imperium Renewables, Inc. | Level 1
Assets (liabilities) measured at fair value
Liabilities, fair value	0
Contingent consideration for acquisition | Imperium Renewables, Inc. | Level 2
Assets (liabilities) measured at fair value
Liabilities, fair value	0
Contingent consideration for acquisition | Imperium Renewables, Inc. | Level 3
Assets (liabilities) measured at fair value
Liabilities, fair value	(5,000)
Money market funds
Assets (liabilities) measured at fair value
Assets, fair value	5,002	302
Money market funds | Level 1
Assets (liabilities) measured at fair value
Assets, fair value	5,002	302
Money market funds | Level 2
Assets (liabilities) measured at fair value
Assets, fair value	0	0
Money market funds | Level 3
Assets (liabilities) measured at fair value
Assets, fair value	0	0
Certificates of deposit
Assets (liabilities) measured at fair value
Assets, fair value		9,995
Certificates of deposit | Level 1
Assets (liabilities) measured at fair value
Assets, fair value		0
Certificates of deposit | Level 2
Assets (liabilities) measured at fair value
Assets, fair value		9,995
Certificates of deposit | Level 3
Assets (liabilities) measured at fair value
Assets, fair value		0
Commercial paper
Assets (liabilities) measured at fair value
Assets, fair value	2,998
Commercial paper | Level 1
Assets (liabilities) measured at fair value
Assets, fair value	0
Commercial paper | Level 2
Assets (liabilities) measured at fair value
Assets, fair value	2,998
Commercial paper | Level 3
Assets (liabilities) measured at fair value
Assets, fair value	0
Commercial notes/bonds
Assets (liabilities) measured at fair value
Assets, fair value	4,033	6,775
Commercial notes/bonds | Level 1
Assets (liabilities) measured at fair value
Assets, fair value	0	0
Commercial notes/bonds | Level 2
Assets (liabilities) measured at fair value
Assets, fair value	4,033	6,775
Commercial notes/bonds | Level 3
Assets (liabilities) measured at fair value
Assets, fair value	$ 0	$ 0

Fair Value Measurement (Detai60

Fair Value Measurement (Details 1) - Contingent Consideration for Acquisition - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014
LS9, Inc.
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 6,159	$ 8,593	$ 8,624	$ 16,666	$ 17,050	$ 0
Change in estimates included in earnings	1,099	(2,434)	(31)	(1,192)	(384)
Fair value of contingent consideration at measurement date	0				0	17,050
Settlements	0	0	0	0	0
Ending balance	7,258	6,159	8,593	15,474	16,666	17,050
Dynamic Fuels, LLC
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	29,337	29,967	30,695	28,900	0	0
Change in estimates included in earnings	7	313	324	133	0
Fair value of contingent consideration at measurement date	0				28,900	0
Settlements	(111)	(943)	(1,052)	0	0
Ending balance	29,233	29,337	29,967	$ 29,033	$ 28,900	$ 0
Imperium Renewables, Inc.
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0	0	0
Change in estimates included in earnings	0	0	0
Fair value of contingent consideration at measurement date	5,000
Settlements	0	0	0
Ending balance	$ 5,000	$ 0	$ 0

Fair Value Measurement (Detai61

Fair Value Measurement (Details 2) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Asset (Liability) Carrying Amount
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt and lines of credit	$ (279,365)	$ (269,608)
Fair Value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt and lines of credit	$ (277,059)	$ (270,331)

Fair Value Measurement (Detai62

Fair Value Measurement (Details Textual)	9 Months Ended
	Sep. 30, 2015
LS9, Inc.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	8.00%
Dynamic Fuels, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	5.80%
Imperium Renewables, Inc.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	10.00%

Net Income (Loss) Per Share (De

Net Income (Loss) Per Share (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total (in shares)	13,356,367,000	12,062,987,000	13,046,503	6,270,138
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total (in shares)	709,000	0	709	0
Stock appreciation rights
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total (in shares)	2,430,414,000	1,137,743,000	2,120,550	1,401,144
Options to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total (in shares)	87,026,000	87,026,000	87,026	87,026
Warrants to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total (in shares)	0	0	0	17,916
Convertible notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total (in shares)	10,838,218,000	10,838,218,000	10,838,218	4,764,052

Net Income (Loss) Per Share (64

Net Income (Loss) Per Share (Details 1) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Earnings Per Share [Abstract]
NET INCOME (LOSS) ATTRIBUTABLE TO THE COMPANY’S COMMON STOCKHOLDERS	$ (15,675)	$ 4,504	$ (55,783)	$ 13,362
Plus: distributed dividends to Preferred Stockholders	0	0	0	40
Less: effect of participating securities	0	0	0	(406)
Net income (loss) attributable to common stockholders - Dilutive	$ (15,675)	$ 4,504	$ (55,783)	$ 12,996
Earnings Per Share, Basic, Other Disclosures [Abstract]
Weighted-average shares used to compute basic net income (loss) per share (in shares)	43,844,005	42,374,768	43,979,266	40,216,467
Adjustment to reflect warrants to purchase common stock (in shares)	0	17,916	0	0
Adjustment to reflect stock appreciation right conversions (in shares)	0	39,321	0	12,462
Weighted-average shares used to compute diluted net income (loss) per share (in shares)	43,844,005	42,432,005	43,979,266	40,228,929
Income (Loss) from Operations before Extraordinary Items, Per Diluted Share [Abstract]
Diluted (in usd per share)	$ (0.36)	$ 0.11	$ (1.27)	$ 0.32

Reportable Segments (Details)

Reportable Segments (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net revenues:		$ 394,856	$ 384,258	$ 999,536	$ 936,216
Income (loss) before income taxes:		(16,721)	4,324	(58,792)	946
Depreciation and amortization expense, net:		6,417	3,899	18,377	9,938
Cash paid for purchases of property, plant and equipment:		33,307	13,269	61,014	45,579
Assets:		1,172,227		1,172,227		$ 1,372,888
Intersegment revenues
Segment Reporting Information [Line Items]
Net revenues:		(31,129)	(25,290)	(81,460)	(71,793)
Corporate and other
Segment Reporting Information [Line Items]
Income (loss) before income taxes:	[1]	(17,599)	(18,391)	(51,898)	(48,484)
Depreciation and amortization expense, net:	[1]	653	335	1,973	856
Cash paid for purchases of property, plant and equipment:	[1]	1,124	3,508	2,161	4,281
Assets:	[2]	199,080		199,080		452,927
Biomass-based diesel | Segments
Segment Reporting Information [Line Items]
Net revenues:		394,824	384,126	999,371	935,997
Income (loss) before income taxes:		873	22,603	(6,948)	49,278
Depreciation and amortization expense, net:		5,685	3,509	16,187	8,934
Cash paid for purchases of property, plant and equipment:		31,953	9,749	57,498	40,655
Assets:		951,207		951,207		899,211
Services | Segments
Segment Reporting Information [Line Items]
Net revenues:		31,161	25,422	81,625	72,012
Income (loss) before income taxes:		5	112	54	152
Depreciation and amortization expense, net:		79	55	217	148
Cash paid for purchases of property, plant and equipment:		230	$ 12	1,355	$ 643
Assets:		$ 21,940		$ 21,940		$ 20,750
[1]	Corporate and other includes income/(expense) not associated with the reportable segments, such as corporate general and administrative expenses, shared service expenses, interest expense and interest income.
[2]	Corporate and other includes cash and other assets not associated with the reportable segments, including investments.

Reportable Segments (Details 1)

Reportable Segments (Details 1) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues:	$ 394,856	$ 384,258	$ 999,536	$ 936,216
Long-lived assets:	563,072		563,072		$ 493,196
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues:	354,079	384,258	890,685	936,216
Long-lived assets:	541,297		541,297		468,170
Foreign
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues:	40,777	$ 0	108,851	$ 0
Long-lived assets:	$ 21,775		$ 21,775		$ 25,026