Renewable Energy Group, Inc.

$ Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000162828022004504 Filed on March 01, 2022

Income Statement

Concept	2021 Q4	2021 Q3	2021 Q2

Balance Sheet

Concept	2021 Q4	2021 Q3	2021 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$788.5M	$893.5M	$861.1M
YoY Change	237.01%	216.72%
Cash & Equivalents	$497.7M	$585.6M	$608.8M
Short-Term Investments	$290.8M	$307.9M	$252.3M
Other Short-Term Assets
YoY Change
Inventory	$453.6M	$374.1M	$364.4M
Prepaid Expenses	$25.54M	$25.07M	$22.58M
Receivables	$158.2M	$196.9M	$169.9M
Other Receivables
Total Short-Term Assets	$1.498B	$1.558B	$1.504B
YoY Change	127.57%	129.54%	88.1%
LONG-TERM ASSETS
Property, Plant & Equipment	$677.4M	$630.9M	$610.5M
YoY Change	13.9%	6.52%	1.24%
Goodwill	$43.86M	$16.08M	$16.08M
YoY Change	172.79%	0.0%	0.0%
Intangibles	$53.18M	$8.731M	$9.180M
YoY Change	396.59%	-20.76%	-19.09%
Long-Term Investments
YoY Change
Other Assets	$60.88M
YoY Change	86.07%
Total Long-Term Assets	$1.061B	$886.1M	$911.8M
YoY Change	32.11%	13.37%	31.65%
TOTAL ASSETS
Total Short-Term Assets	$1.498B	$1.558B	$1.504B
Total Long-Term Assets	$1.061B	$886.1M	$911.8M
Total Assets	$2.559B	$2.444B	$2.416B
YoY Change	75.1%	67.37%	61.9%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$162.8M	$128.9M	$151.2M
YoY Change	22.5%	-25.59%	-30.28%
Accrued Expenses	$53.88M	$48.21M	$35.71M
YoY Change	54.51%	83.75%	71.83%
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due	$0.00	$3.000K	$6.000K
YoY Change	-100.0%	-99.99%	-99.99%
Total Short-Term Liabilities	$246.6M	$200.8M	$217.3M
YoY Change	0.26%	-13.52%	-20.98%
LONG-TERM LIABILITIES
Long-Term Debt	$536.8M	$536.2M	$536.4M
YoY Change	3441.08%	3276.62%	3156.79%
Other Long-Term Liabilities	$4.100M	$2.045M	$3.441M
YoY Change	-8.58%	-62.46%	-34.32%
Total Long-Term Liabilities	$540.9M	$538.3M	$539.9M
YoY Change	2653.43%	2423.73%	2386.72%
TOTAL LIABILITIES
Total Short-Term Liabilities	$246.6M	$200.8M	$217.3M
Total Long-Term Liabilities	$540.9M	$538.3M	$539.9M
Total Liabilities	$831.1M	$768.9M	$782.7M
YoY Change	189.14%	178.43%	143.29%
SHAREHOLDERS EQUITY
Retained Earnings	$1.105B	$1.052B	$1.010B
YoY Change	23.99%	21.8%	20.03%
Common Stock	$709.2M	$707.1M	$705.1M
YoY Change	80.8%	81.12%	75.04%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$84.29M	$83.29M	$81.80M
YoY Change	-23.84%	-24.67%	-25.05%
Treasury Stock Shares	6.241M shares	6.220M shares	6.192M shares
Shareholders Equity	$1.728B	$1.675B	$1.633B
YoY Change
Total Liabilities & Shareholders Equity	$2.559B	$2.444B	$2.416B
YoY Change	75.1%	67.37%	61.9%

Cashflow Statement

Concept	2021 Q4	2021 Q3	2021 Q2

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001463258
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2018	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	http://fasb.org/us-gaap/2021-01-31#AccountingStandardsUpdate201602Member
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	001-35397
CY2021	dei	Entity Registrant Name EntityRegistrantName	RENEWABLE ENERGY GROUP, INC.
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	26-4785427
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	416 South Bell Avenue
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Ames
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	IA
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	50010
CY2021	dei	City Area Code CityAreaCode	515
CY2021	dei	Local Phone Number LocalPhoneNumber	239-8000
CY2021	dei	Security12b Title Security12bTitle	Common Stock, par value $.0001 per share
CY2021	dei	Trading Symbol TradingSymbol	REGI
CY2021	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Public Float EntityPublicFloat	2309771496	USD
CY2022Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	50318773	shares
CY2021	dei	Auditor Location AuditorLocation	Des Moines, Iowa
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	497653000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	84441000	USD
CY2021Q4	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	290818000	USD
CY2020Q4	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	149521000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1814000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1631000	USD
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	158187000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	143475000	USD
CY2021Q4	us-gaap	Inventory Net InventoryNet	453592000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	209361000	USD
CY2021Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	93443000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	67657000	USD
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	4218000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	3777000	USD
CY2021Q4	us-gaap	Assets Current AssetsCurrent	1497911000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	658232000	USD
CY2021Q4	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	167767000	USD
CY2020Q4	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	120022000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	677444000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	594796000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	51730000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	28840000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	43864000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	16080000	USD
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	53175000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	10708000	USD
CY2021Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	6171000	USD
CY2020Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	0	USD
CY2021Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	60882000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	32720000	USD
CY2021Q4	us-gaap	Assets Assets	2558944000	USD
CY2020Q4	us-gaap	Assets Assets	1461398000	USD
CY2021Q4	us-gaap	Loans Payable To Bank Current LoansPayableToBankCurrent	0	USD
CY2020Q4	us-gaap	Loans Payable To Bank Current LoansPayableToBankCurrent	50088000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	13026000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	14581000	USD
CY2021Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	162847000	USD
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	132938000	USD
CY2021Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	53884000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	34875000	USD
CY2021Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	16856000	USD
CY2020Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	13488000	USD
CY2021Q4	us-gaap	Liabilities Current LiabilitiesCurrent	246613000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	245970000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	4659000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	6607000	USD
CY2021Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	13243000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	1731000	USD
CY2021Q4	us-gaap	Long Term Loans From Bank LongTermLoansFromBank	536757000	USD
CY2020Q4	us-gaap	Long Term Loans From Bank LongTermLoansFromBank	15158000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	38989000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	15223000	USD
CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	4100000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	4485000	USD
CY2021Q4	us-gaap	Liabilities Liabilities	831118000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	287443000	USD
CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
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CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000000	shares
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CY2021Q4	us-gaap	Common Stock Value CommonStockValue	6000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	5000	USD
CY2021Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	709186000	USD
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CY2021Q4	us-gaap	Treasury Stock Value TreasuryStockValue	84285000	USD
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CY2021	us-gaap	Investment Income Interest InvestmentIncomeInterest	2067000	USD
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	2225000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	1069000	USD
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CY2019	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	364257000	USD
CY2021	us-gaap	Net Income Loss From Discontinued Operations Available To Common Shareholders Basic NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic	0	USD
CY2020	us-gaap	Net Income Loss From Discontinued Operations Available To Common Shareholders Basic NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic	0	USD
CY2019	us-gaap	Net Income Loss From Discontinued Operations Available To Common Shareholders Basic NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic	-9667000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	4.48
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	3.07
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	9.51
CY2021	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.25
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.48
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.07
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	9.27
CY2021	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	4.44
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CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	8.61
CY2021	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.25
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.44
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.76
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.38
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	47302924	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39199687	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	38288610	shares
CY2021	regi	Continuing Operation Weighted Average Numberof Shares Outstanding Diluted ContinuingOperationWeightedAverageNumberofSharesOutstandingDiluted	47718228	shares
CY2020	regi	Continuing Operation Weighted Average Numberof Shares Outstanding Diluted ContinuingOperationWeightedAverageNumberofSharesOutstandingDiluted	43686989	shares
CY2019	regi	Continuing Operation Weighted Average Numberof Shares Outstanding Diluted ContinuingOperationWeightedAverageNumberofSharesOutstandingDiluted	42320980	shares
CY2021	regi	Discontinued Operation Weighted Average Numberof Shares Outstanding Diluted DiscontinuedOperationWeightedAverageNumberofSharesOutstandingDiluted	47718228	shares
CY2020	regi	Discontinued Operation Weighted Average Numberof Shares Outstanding Diluted DiscontinuedOperationWeightedAverageNumberofSharesOutstandingDiluted	43686989	shares
CY2019	regi	Discontinued Operation Weighted Average Numberof Shares Outstanding Diluted DiscontinuedOperationWeightedAverageNumberofSharesOutstandingDiluted	38288610	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	47718228	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	43686989	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	42320980	shares
CY2021	us-gaap	Profit Loss ProfitLoss	213819000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	122813000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	362828000	USD
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	10000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-729000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	42000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-2542000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	3112000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-338000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-3271000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	3154000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-338000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	210548000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	125967000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	362490000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	750095000	USD
CY2019	regi	Conversion Of Restricted Stock Units To Common Stock Shares Treasury Shares Purchased ConversionOfRestrictedStockUnitsToCommonStockSharesTreasurySharesPurchased	140592	shares
CY2019	regi	Stock Issued During Period Value Conversionof Restricted Stock Unitsto Common Stock StockIssuedDuringPeriodValueConversionofRestrictedStockUnitstoCommonStock	3317000	USD
CY2019	regi	Stock Issued During Period Value Settlementof Stock Appreciation Rightsin Common Stock StockIssuedDuringPeriodValueSettlementofStockAppreciationRightsinCommonStock	232000	USD
CY2019	regi	Adjustmentsto Additional Paidin Capital Equity Componentof Convertible Debt Subsequent Adjustments Tax Impact AdjustmentstoAdditionalPaidinCapitalEquityComponentofConvertibleDebtSubsequentAdjustmentsTaxImpact	564000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt Subsequent Adjustments AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments	9715000	USD
CY2019	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1902781000	shares
CY2019	regi	Stock Issued During Period Value Settlementof Convertible Debtin Common Stock StockIssuedDuringPeriodValueSettlementofConvertibleDebtinCommonStock	0	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	0	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6707000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-338000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	362828000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1099512000	USD
CY2020	regi	Conversion Of Restricted Stock Units To Common Stock Shares Treasury Shares Purchased ConversionOfRestrictedStockUnitsToCommonStockSharesTreasurySharesPurchased	143949	shares
CY2020	regi	Stock Issued During Period Value Conversionof Restricted Stock Unitsto Common Stock StockIssuedDuringPeriodValueConversionofRestrictedStockUnitstoCommonStock	3917000	USD
CY2020	regi	Stock Issued During Period Value Settlementof Stock Appreciation Rightsin Common Stock StockIssuedDuringPeriodValueSettlementofStockAppreciationRightsinCommonStock	1861000	USD
CY2020	regi	Adjustmentsto Additional Paidin Capital Equity Componentof Convertible Debt Subsequent Adjustments Tax Impact AdjustmentstoAdditionalPaidinCapitalEquityComponentofConvertibleDebtSubsequentAdjustmentsTaxImpact	2386000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt Subsequent Adjustments AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments	52688000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6942000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3154000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	122813000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1173955000	USD
CY2021	regi	Conversion Of Restricted Stock Units To Common Stock Shares Treasury Shares Purchased ConversionOfRestrictedStockUnitsToCommonStockSharesTreasurySharesPurchased	206302	shares
CY2021	regi	Stock Issued During Period Value Conversionof Restricted Stock Unitsto Common Stock StockIssuedDuringPeriodValueConversionofRestrictedStockUnitstoCommonStock	13495000	USD
CY2021	regi	Stock Issued During Period Value Settlementof Stock Appreciation Rightsin Common Stock StockIssuedDuringPeriodValueSettlementofStockAppreciationRightsinCommonStock	9530000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	19970000	USD
CY2021	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	365280000	USD
CY2021	regi	Adjustmentsto Additional Paidin Capital Equity Componentof Convertible Debt Subsequent Adjustments Tax Impact AdjustmentstoAdditionalPaidinCapitalEquityComponentofConvertibleDebtSubsequentAdjustmentsTaxImpact	2437000	USD
CY2021	regi	Stock Issued During Period Value Settlementof Convertible Debtin Common Stock StockIssuedDuringPeriodValueSettlementofConvertibleDebtinCommonStock	6929000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7997000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-3271000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	213819000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1727826000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	213819000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	122813000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	362828000	USD
CY2021	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-9667000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	213819000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	122813000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	372495000	USD
CY2021	us-gaap	Depreciation Depreciation	43430000	USD
CY2020	us-gaap	Depreciation Depreciation	37315000	USD
CY2019	us-gaap	Depreciation Depreciation	36298000	USD
CY2021	us-gaap	Other Amortization Of Deferred Charges OtherAmortizationOfDeferredCharges	26054000	USD
CY2020	us-gaap	Other Amortization Of Deferred Charges OtherAmortizationOfDeferredCharges	16628000	USD
CY2019	us-gaap	Other Amortization Of Deferred Charges OtherAmortizationOfDeferredCharges	22457000	USD
CY2021	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	2226000	USD
CY2020	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	55000	USD
CY2019	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	51000	USD
CY2021	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-247000	USD
CY2020	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-832000	USD
CY2019	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-539000	USD
CY2021	regi	Amortization Marketable Securities AmortizationMarketableSecurities	3493000	USD
CY2020	regi	Amortization Marketable Securities AmortizationMarketableSecurities	981000	USD
CY2019	regi	Amortization Marketable Securities AmortizationMarketableSecurities	-146000	USD
CY2021	us-gaap	Asset Impairment Charges AssetImpairmentCharges	7359000	USD
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	22404000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	12208000	USD
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	6013000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	734000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	447000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	7997000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	6942000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	6707000	USD
CY2021	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	12195000	USD
CY2020	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-2012000	USD
CY2019	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	591000	USD
CY2021	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	0	USD
CY2020	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	0	USD
CY2019	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	566000	USD
CY2021	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	1462000	USD
CY2020	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	205000	USD
CY2019	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	0	USD
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-4449000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	1809000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	488000	USD
CY2021	us-gaap	Gain Loss On Termination Of Lease GainLossOnTerminationOfLease	0	USD
CY2020	us-gaap	Gain Loss On Termination Of Lease GainLossOnTerminationOfLease	4459000	USD
CY2019	us-gaap	Gain Loss On Termination Of Lease GainLossOnTerminationOfLease	0	USD
CY2021	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-83000	USD
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	33000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-11000	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-1835000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-715685000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	786178000	USD
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	235536000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	47904000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-7151000	USD
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	60387000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	46171000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-11089000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-9167000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-266702000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	279385000	USD
CY2021	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	2701000	USD
CY2020	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	-5009000	USD
CY2019	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	17564000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	20569000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	15546000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	20913000	USD
CY2021	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	3369000	USD
CY2020	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	4867000	USD
CY2019	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	8321000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-16241000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	543430000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-33027000	USD
CY2021	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	0	USD
CY2020	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	0	USD
CY2019	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-13681000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-16241000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	543430000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-46708000	USD
CY2021	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	472082000	USD
CY2020	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	354079000	USD
CY2019	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	3478000	USD
CY2021	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	278821000	USD
CY2020	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	83606000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	54584000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	99549000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	63642000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	42518000	USD
CY2021	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	1500000	USD
CY2020	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	0	USD
CY2019	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	6018000	USD
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	76461000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-1462000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-205000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-369309000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-333910000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	2570000	USD
CY2021	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	0	USD
CY2020	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	0	USD
CY2019	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	3100000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-369309000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-333910000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	5670000	USD
CY2021	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	0	USD
CY2020	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-76990000	USD
CY2019	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	70091000	USD
CY2021	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	0	USD
CY2020	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	0	USD
CY2019	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	113459000	USD
CY2021	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	0	USD
CY2020	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	0	USD
CY2019	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	120644000	USD
CY2021	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	550000000	USD
CY2020	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	0	USD
CY2021	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	78044000	USD
CY2020	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	92346000	USD
CY2019	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	80365000	USD
CY2021	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	14585000	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	116000	USD
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	385250000	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2021	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	19970000	USD
CY2020	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	0	USD
CY2019	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	0	USD
CY2021	regi	Payments For Settlementof Contingent Consideration PaymentsForSettlementofContingentConsideration	0	USD
CY2020	regi	Payments For Settlementof Contingent Consideration PaymentsForSettlementofContingentConsideration	0	USD
CY2019	regi	Payments For Settlementof Contingent Consideration PaymentsForSettlementofContingentConsideration	10427000	USD
CY2021	regi	Paymentsfor Conversionof Restricted Stock Unitsand Stock Appreciation Rights PaymentsforConversionofRestrictedStockUnitsandStockAppreciationRights	23025000	USD
CY2020	regi	Paymentsfor Conversionof Restricted Stock Unitsand Stock Appreciation Rights PaymentsforConversionofRestrictedStockUnitsandStockAppreciationRights	5778000	USD
CY2019	regi	Paymentsfor Conversionof Restricted Stock Unitsand Stock Appreciation Rights PaymentsforConversionofRestrictedStockUnitsandStockAppreciationRights	3550000	USD
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-500000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	799626000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-175114000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-32052000	USD
CY2021	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	0	USD
CY2020	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	0	USD
CY2019	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	0	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	799626000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-175114000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-32052000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	414076000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	34406000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-73090000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	88218000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	53436000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	126575000	USD
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-423000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	376000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-49000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	501871000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	88218000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	53436000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	4826000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	22000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	740000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	19742000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	6050000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	9054000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	27634000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	7018000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	11581000	USD
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	22091000	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	3215000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	3641000	USD
CY2021	regi	Settlement Of Convertible Senior Notes Incurred But Not Yet Paid SettlementOfConvertibleSeniorNotesIncurredButNotYetPaid	0	USD
CY2020	regi	Settlement Of Convertible Senior Notes Incurred But Not Yet Paid SettlementOfConvertibleSeniorNotesIncurredButNotYetPaid	0	USD
CY2019	regi	Settlement Of Convertible Senior Notes Incurred But Not Yet Paid SettlementOfConvertibleSeniorNotesIncurredButNotYetPaid	9402000	USD
CY2021	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	0	USD
CY2020	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	0	USD
CY2019	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	18779000	USD
CY2021	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	0	USD
CY2020	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	0	USD
CY2019	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	8952000	USD
CY2021	regi	Numberof Biorefineries NumberofBiorefineries	11	facility
CY2021	regi	Number Of Operating Biodiesel Production Facility NumberOfOperatingBiodieselProductionFacility	11	facility
CY2021Q4	regi	Production Capacity Per Year ProductionCapacityPerYear	470000000	gal
CY2021	regi	Number Of Multi Feedstock Capable Operating Biomass Based Diesel Production Facilities NumberOfMultiFeedstockCapableOperatingBiomassBasedDieselProductionFacilities	10	facility
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	497653000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	84441000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	50436000	USD
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	4218000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	3777000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	3000000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	501871000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	88218000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	53436000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1814000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1631000	USD
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	158187000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	143475000	USD
CY2020Q4	regi	Capitalization Of Interest Incurred On Debt During Construction CapitalizationOfInterestIncurredOnDebtDuringConstruction	193000	USD
CY2021Q4	regi	Capitalization Of Interest Incurred On Debt During Construction CapitalizationOfInterestIncurredOnDebtDuringConstruction	1111000	USD
CY2019Q4	regi	Capitalization Of Interest Incurred On Debt During Construction CapitalizationOfInterestIncurredOnDebtDuringConstruction	0	USD
CY2021	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2021	us-gaap	Schedule Of Repurchase Agreements ScheduleOfRepurchaseAgreements	The table below sets out the information regarding the activities under the 2019 Program and 2020 Program during 2020:<table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:100.000%"><tr><td style="width:1.0%"/><td style="width:24.192%"/><td style="width:0.1%"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td style="width:1.0%"/><td style="width:17.028%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.530%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:17.028%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.530%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:17.028%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.530%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:17.034%"/><td style="width:0.1%"/></tr><tr><td colspan="3" style="border-left:1pt solid #000000;border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="21" style="border-left:1pt solid #000000;border-right:1pt solid #000000;border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">For the year ended December 31, 2020</span></td></tr><tr><td colspan="3" style="border-left:1pt solid #000000;border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Number of shares/Principal amount in $'000</span></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">January 2019 Program</span></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">February 2020 Program</span></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-right:1pt solid #000000;border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Both Programs</span></td></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="background-color:#cceeff;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-top:1pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">2036 Convertible Senior Notes Repurchases</span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td style="background-color:#cceeff;border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">30,008 </span></td><td style="background-color:#cceeff;border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;border-bottom:1pt solid #000000;padding:0 1pt"/><td style="background-color:#cceeff;border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">67,804 </span></td><td style="background-color:#cceeff;border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;border-bottom:1pt solid #000000;padding:0 1pt"/><td style="background-color:#cceeff;border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">8,086 </span></td><td style="background-color:#cceeff;border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;border-bottom:1pt solid #000000;padding:0 1pt"/><td style="background-color:#cceeff;border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">75,890 </span></td><td style="background-color:#cceeff;border-bottom:1pt solid #000000;border-right:1pt solid #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr></table>
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2953272000	USD
CY2021	regi	Biodiesel Government Incentives BiodieselGovernmentIncentives	290778000	USD
CY2021	us-gaap	Revenues Revenues	3244050000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1831846000	USD
CY2020	regi	Biodiesel Government Incentives BiodieselGovernmentIncentives	305302000	USD
CY2020	us-gaap	Revenues Revenues	2137148000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1975001000	USD
CY2019	regi	Biodiesel Government Incentives BiodieselGovernmentIncentives	650215000	USD
CY2019	us-gaap	Revenues Revenues	2625216000	USD
CY2021Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	108443000	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	74774000	USD
CY2021Q4	regi	Contractwith Customer Liability Deferred Revenue ContractwithCustomerLiabilityDeferredRevenue	1822000	USD
CY2020Q4	regi	Contractwith Customer Liability Deferred Revenue ContractwithCustomerLiabilityDeferredRevenue	946000	USD
CY2021Q4	regi	Contractwith Customer Accounts Payable Current ContractwithCustomerAccountsPayableCurrent	699000	USD
CY2020Q4	regi	Contractwith Customer Accounts Payable Current ContractwithCustomerAccountsPayableCurrent	914000	USD
CY2020Q4	regi	Contractwith Customer Liability Deferred Revenue ContractwithCustomerLiabilityDeferredRevenue	946000	USD
CY2021	regi	Contractwith Customer Liability Deferred Revenue Increase Decrease From Cash Receipts ContractwithCustomerLiabilityDeferredRevenueIncreaseDecreaseFromCashReceipts	41797000	USD
CY2021	regi	Contractwith Customer Liability Deferred Revenue Impact On Revenue ContractwithCustomerLiabilityDeferredRevenueImpactOnRevenue	40921000	USD
CY2021	regi	Contractwith Customer Liability Deferred Revenue Other ContractwithCustomerLiabilityDeferredRevenueOther	0	USD
CY2021Q4	regi	Contractwith Customer Liability Deferred Revenue ContractwithCustomerLiabilityDeferredRevenue	1822000	USD
CY2020Q4	regi	Contract With Customer Liability Payable To Customers Related To Btc ContractWithCustomerLiabilityPayableToCustomersRelatedToBTC	914000	USD
CY2021	regi	Contract With Customer Liability Payable To Customers Related To Btc Cash Receipts Payments ContractWithCustomerLiabilityPayableToCustomersRelatedToBTCCashReceiptsPayments	-215000	USD
CY2021	regi	Contract With Customer Liability Payable To Customers Related To Btc Impact On Revenue ContractWithCustomerLiabilityPayableToCustomersRelatedToBTCImpactOnRevenue	0	USD
CY2021	regi	Contract With Customer Liability Payable To Customers Related To Btc Other ContractWithCustomerLiabilityPayableToCustomersRelatedToBTCOther	0	USD
CY2021Q4	regi	Contract With Customer Liability Payable To Customers Related To Btc ContractWithCustomerLiabilityPayableToCustomersRelatedToBTC	699000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	1860000	USD
CY2021	regi	Contractwith Customer Liability Increase Decrease From Cash Receipts ContractwithCustomerLiabilityIncreaseDecreaseFromCashReceipts	41582000	USD
CY2021	regi	Contractwith Customer Liability Impact On Revenue ContractwithCustomerLiabilityImpactOnRevenue	40921000	USD
CY2021	regi	Contractwith Customer Liability Other ContractwithCustomerLiabilityOther	0	USD
CY2021Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	2521000	USD
CY2019Q4	regi	Contractwith Customer Liability Deferred Revenue ContractwithCustomerLiabilityDeferredRevenue	631000	USD
CY2020	regi	Contractwith Customer Liability Deferred Revenue Increase Decrease From Cash Receipts ContractwithCustomerLiabilityDeferredRevenueIncreaseDecreaseFromCashReceipts	20357000	USD
CY2020	regi	Contractwith Customer Liability Deferred Revenue Impact On Revenue ContractwithCustomerLiabilityDeferredRevenueImpactOnRevenue	20042000	USD
CY2020	regi	Contractwith Customer Liability Deferred Revenue Other ContractwithCustomerLiabilityDeferredRevenueOther	0	USD
CY2020Q4	regi	Contractwith Customer Liability Deferred Revenue ContractwithCustomerLiabilityDeferredRevenue	946000	USD
CY2019Q4	regi	Contract With Customer Liability Payable To Customers Related To Btc ContractWithCustomerLiabilityPayableToCustomersRelatedToBTC	255193000	USD
CY2020	regi	Contract With Customer Liability Payable To Customers Related To Btc Cash Receipts Payments ContractWithCustomerLiabilityPayableToCustomersRelatedToBTCCashReceiptsPayments	-257235000	USD
CY2020	regi	Contract With Customer Liability Payable To Customers Related To Btc Impact On Revenue ContractWithCustomerLiabilityPayableToCustomersRelatedToBTCImpactOnRevenue	-1082000	USD
CY2020	regi	Contract With Customer Liability Payable To Customers Related To Btc Other ContractWithCustomerLiabilityPayableToCustomersRelatedToBTCOther	1874000	USD
CY2020Q4	regi	Contract With Customer Liability Payable To Customers Related To Btc ContractWithCustomerLiabilityPayableToCustomersRelatedToBTC	914000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	255824000	USD
CY2020	regi	Contractwith Customer Liability Increase Decrease From Cash Receipts ContractwithCustomerLiabilityIncreaseDecreaseFromCashReceipts	-236878000	USD
CY2020	regi	Contractwith Customer Liability Impact On Revenue ContractwithCustomerLiabilityImpactOnRevenue	18960000	USD
CY2020	regi	Contractwith Customer Liability Other ContractwithCustomerLiabilityOther	1874000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	1860000	USD
CY2021	us-gaap	Advertising Expense AdvertisingExpense	3193000	USD
CY2020	us-gaap	Advertising Expense AdvertisingExpense	2302000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	2795000	USD
CY2021	us-gaap	Defined Contribution Plan Employers Matching Contribution Annual Vesting Percentage DefinedContributionPlanEmployersMatchingContributionAnnualVestingPercentage	0.50
CY2021	regi	Percentage Of Participants Eligible Earnings PercentageOfParticipantsEligibleEarnings	0.06
CY2021	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	2079000	USD
CY2020	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	1830000	USD
CY2019	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	1815000	USD
CY2021	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-top:14pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Concentrations</span></div><div style="margin-top:9pt;text-indent:24.75pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company maintains cash balances at financial institutions, which may at times exceed the $250 coverage by the U.S. Federal Deposit Insurance Company. The Company has experienced no losses in such accounts.</span></div>
CY2021Q4	us-gaap	Cash Fdic Insured Amount CashFDICInsuredAmount	250000	USD
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:14pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-top:5pt;text-indent:24.75pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the dates of the financial statements and reported amounts of revenues and expenses during the reporting periods. These estimates are based on information that is currently available to management and on various assumptions that the Company believes to be reasonable under the circumstances. Actual results could differ from those estimates.</span></div>
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Current DebtSecuritiesAvailableForSaleAmortizedCostCurrent	291029000	USD
CY2021Q4	regi	Debt Securities Available For Sale Accumulated Gross Unrealized Gain Before Tax Current DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainBeforeTaxCurrent	3000	USD
CY2021Q4	regi	Debt Securities Available For Sale Accumulated Gross Unrealized Loss Before Tax Current DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedLossBeforeTaxCurrent	214000	USD
CY2021Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	168039000	USD
CY2020Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	65969000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	290818000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Noncurrent DebtSecuritiesAvailableForSaleAmortizedCostNoncurrent	168233000	USD
CY2021Q4	regi	Debt Securities Available For Sale Accumulated Gross Unrealized Gain Before Tax Noncurrent DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainBeforeTaxNoncurrent	0	USD
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CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	273003000	USD
CY2021Q4	regi	Property Plant And Equipment Net Excluding Construction In Progress PropertyPlantAndEquipmentNetExcludingConstructionInProgress	538117000	USD
CY2020Q4	regi	Property Plant And Equipment Net Excluding Construction In Progress PropertyPlantAndEquipmentNetExcludingConstructionInProgress	543030000	USD
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CY2020Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	51766000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	677444000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	594796000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	64377000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	11202000	USD
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CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	9473000	USD
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CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	4988000	USD
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CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	53175000	USD
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CY2020Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	29621000	USD
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CY2020Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	1754000	USD
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CY2021Q4	us-gaap	Other Inventories Spare Parts OtherInventoriesSpareParts	2756000	USD
CY2020Q4	us-gaap	Other Inventories Spare Parts OtherInventoriesSpareParts	2610000	USD
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CY2020Q4	us-gaap	Deposit Assets DepositAssets	451000	USD
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CY2020Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	8704000	USD
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CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	32720000	USD
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CY2021Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	13243000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	1731000	USD
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CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	0	USD
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CY2020	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	473000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	2703000	USD
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	659000	USD
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CY2020	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	427000	USD
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CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	439738000	USD
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CY2021Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	4233000	USD
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CY2020Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Trading Securities DeferredTaxAssetsUnrealizedLossesOnTradingSecurities	1548000	USD
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CY2021Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	9648000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	3226000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	5141000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	5235000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	496244000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	464468000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	76247000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	68948000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	12163000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	1512000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	387786000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	392866000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	7822000	USD
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CY2020Q4	regi	Deferred Tax Liabilities Convertible Debt DeferredTaxLiabilitiesConvertibleDebt	3253000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	10080000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	0	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	2878000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	2644000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	498000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	622000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	101866000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	83289000	USD
CY2021Q4	regi	Deferred Tax Assets Net Before Valuation Allowance DeferredTaxAssetsNetBeforeValuationAllowance	394378000	USD
CY2020Q4	regi	Deferred Tax Assets Net Before Valuation Allowance DeferredTaxAssetsNetBeforeValuationAllowance	381179000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	6607000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	439738000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	1667000000	USD
CY2021	regi	Operating Loss Carryforwards Expiration Year OperatingLossCarryforwardsExpirationYear	2028
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	387786000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	350902000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	283805000	USD
CY2021	regi	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance Amount Charged To Income EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceAmountChargedToIncome	-561000	USD
CY2020	regi	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance Amount Charged To Income EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceAmountChargedToIncome	36195000	USD
CY2019	regi	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance Amount Charged To Income EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceAmountChargedToIncome	65558000	USD
CY2021	regi	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance Amount Due To Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceAmountDueToChangeInEnactedTaxRate	6124000	USD
CY2020	regi	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance Amount Due To Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceAmountDueToChangeInEnactedTaxRate	0	USD
CY2019	regi	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance Amount Due To Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceAmountDueToChangeInEnactedTaxRate	0	USD
CY2021	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-658000	USD
CY2020	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	689000	USD
CY2019	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-164000	USD
CY2021	regi	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance Amount Charged To Other Comprehensive Income EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceAmountChargedToOtherComprehensiveIncome	175000	USD
CY2020	regi	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance Amount Charged To Other Comprehensive Income EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceAmountChargedToOtherComprehensiveIncome	0	USD
CY2019	regi	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance Amount Charged To Other Comprehensive Income EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceAmountChargedToOtherComprehensiveIncome	-7000	USD
CY2021	regi	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Amount Chargedto Equity EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAmountChargedtoEquity	0	USD
CY2020	regi	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Amount Chargedto Equity EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAmountChargedtoEquity	0	USD
CY2019	regi	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Amount Chargedto Equity EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAmountChargedtoEquity	1710000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	392866000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	387786000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	350902000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3232000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2777000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2028000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2708000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	732000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	288000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	427000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	24000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsDecreasesResultingFromForeignCurrencyTranslation	50000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsIncreasesResultingFromForeignCurrencyTranslation	28000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsDecreasesResultingFromForeignCurrencyTranslation	7000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	6178000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3232000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2777000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	5301000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	726000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	274000	USD
CY2021	regi	Period For Unrecognized Tax Benefits To Increase Or Decrease PeriodForUnrecognizedTaxBenefitsToIncreaseOrDecrease	P12M
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	4160000	shares
CY2017Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized	2350000	shares
CY2014Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized	2350000	shares
CY2017Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	6510000	shares
CY2014Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	6510000	shares
CY2021Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	1900000	shares
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	7997000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	6942000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	6707000	USD
CY2021Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	12716000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y8M12D
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	19348000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	18022000	USD
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	1885000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	1682000	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	974000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1778000	USD
CY2021	us-gaap	Lease Cost LeaseCost	22207000	USD
CY2020	us-gaap	Lease Cost LeaseCost	21482000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y8M12D
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0324
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	14407000	USD
CY2021Q4	regi	Lessee Operating Lease Liability Undiscounted Excess Amount Year One LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearOne	1381000	USD
CY2021Q4	regi	Operating Lease Liability Year One OperatingLeaseLiabilityYearOne	13026000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	11767000	USD
CY2021Q4	regi	Lessee Operating Lease Liability Undiscounted Excess Amount Dueyear Two LesseeOperatingLeaseLiabilityUndiscountedExcessAmountDueyearTwo	1002000	USD
CY2021Q4	regi	Operating Lease Liability Due Year Two OperatingLeaseLiabilityDueYearTwo	10765000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	8847000	USD
CY2021Q4	regi	Lessee Operating Lease Liability Undiscounted Excess Amount Due Yearthree LesseeOperatingLeaseLiabilityUndiscountedExcessAmountDueYearthree	732000	USD
CY2021Q4	regi	Operating Lease Liability Due Year Three OperatingLeaseLiabilityDueYearThree	8115000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	6183000	USD
CY2021Q4	regi	Lessee Operating Lease Liability Undiscounted Excess Amount Due Four LesseeOperatingLeaseLiabilityUndiscountedExcessAmountDueFour	546000	USD
CY2021Q4	regi	Operating Lease Liability Due Year Four OperatingLeaseLiabilityDueYearFour	5637000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	3931000	USD
CY2021Q4	regi	Lessee Operating Lease Liability Undiscounted Excess Amount Due Year Five LesseeOperatingLeaseLiabilityUndiscountedExcessAmountDueYearFive	410000	USD
CY2021Q4	regi	Operating Lease Liability Due Year Five OperatingLeaseLiabilityDueYearFive	3521000	USD
CY2021Q4	regi	Lessee Operating Lease Liability Payments Due Year Six LesseeOperatingLeaseLiabilityPaymentsDueYearSix	11764000	USD
CY2021Q4	regi	Lessee Operating Lease Liability Undiscounted Excess Amount Due Year Six LesseeOperatingLeaseLiabilityUndiscountedExcessAmountDueYearSix	813000	USD
CY2021Q4	regi	Operating Lease Liability Due Year Six OperatingLeaseLiabilityDueYearSix	10951000	USD
CY2021Q4	regi	Lessee Operating Lease Liability Payments Due After Year Six LesseeOperatingLeaseLiabilityPaymentsDueAfterYearSix	56899000	USD
CY2021Q4	regi	Lessee Operating Lease Liability Undiscounted Excess Amount Due After Year Six LesseeOperatingLeaseLiabilityUndiscountedExcessAmountDueAfterYearSix	4884000	USD
CY2021Q4	regi	Operating Lease Liability Due After Year Six OperatingLeaseLiabilityDueAfterYearSix	52015000	USD
CY2021	us-gaap	Derivative Nonmonetary Notional Amount Volume DerivativeNonmonetaryNotionalAmountVolume	62700000	gal
CY2021	us-gaap	Derivative Nonmonetary Notional Amount Mass DerivativeNonmonetaryNotionalAmountMass	133700000	lb
CY2021	us-gaap	Derivative Nonmonetary Notional Amount Energy Measure DerivativeNonmonetaryNotionalAmountEnergyMeasure	3200000	Btu
CY2021Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	1459000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	4783000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	6242000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	3458000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	12164000	USD
CY2021Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	11110000	USD
CY2021Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset		USD
CY2020Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	14139000	USD
CY2020Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	0	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	15893000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	6242000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	17597000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	12164000	USD
CY2021Q4	regi	Gross Asset Amounts Offset In Statement Of Financial Position GrossAssetAmountsOffsetInStatementOfFinancialPosition	6242000	USD
CY2021Q4	regi	Gross Liability Amounts Offset In Statement Of Financial Position GrossLiabilityAmountsOffsetInStatementOfFinancialPosition	6242000	USD
CY2021Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	0	USD
CY2020Q4	regi	Gross Asset Amounts Offset In Statement Of Financial Position GrossAssetAmountsOffsetInStatementOfFinancialPosition	12164000	USD
CY2020Q4	regi	Gross Liability Amounts Offset In Statement Of Financial Position GrossLiabilityAmountsOffsetInStatementOfFinancialPosition	12164000	USD
CY2021Q4	us-gaap	Derivative Assets DerivativeAssets	9651000	USD
CY2020Q4	us-gaap	Derivative Assets DerivativeAssets	5433000	USD
CY2020Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	0	USD
CY2021Q4	us-gaap	Fair Value Net Asset Liability FairValueNetAssetLiability	457126000	USD
CY2020Q4	us-gaap	Fair Value Net Asset Liability FairValueNetAssetLiability	260837000	USD
CY2021	us-gaap	Net Income Loss From Discontinued Operations Available To Common Shareholders Basic NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic	0	USD
CY2020	us-gaap	Net Income Loss From Discontinued Operations Available To Common Shareholders Basic NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic	0	USD
CY2021	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	211691000	USD
CY2020	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	120415000	USD
CY2019	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	364257000	USD
CY2021	regi	Adjusted Net Incomefrom Continuing Operations Availableto Common Shareholders Effectof Participating Securities AdjustedNetIncomefromContinuingOperationsAvailabletoCommonShareholdersEffectofParticipatingSecurities	-2128000	USD
CY2020	regi	Adjusted Net Incomefrom Continuing Operations Availableto Common Shareholders Effectof Participating Securities AdjustedNetIncomefromContinuingOperationsAvailabletoCommonShareholdersEffectofParticipatingSecurities	-2398000	USD
CY2019	regi	Adjusted Net Incomefrom Continuing Operations Availableto Common Shareholders Effectof Participating Securities AdjustedNetIncomefromContinuingOperationsAvailabletoCommonShareholdersEffectofParticipatingSecurities	-8238000	USD
CY2021	regi	Adjusted Net Incomefrom Continuing Operations Available To Common Stockholders AdjustedNetIncomefromContinuingOperationsAvailableToCommonStockholders	213819000	USD
CY2020	regi	Adjusted Net Incomefrom Continuing Operations Available To Common Stockholders AdjustedNetIncomefromContinuingOperationsAvailableToCommonStockholders	122813000	USD
CY2019	regi	Adjusted Net Incomefrom Continuing Operations Available To Common Stockholders AdjustedNetIncomefromContinuingOperationsAvailableToCommonStockholders	372495000	USD
CY2021	regi	Effect Of Participating Share Based Awards EffectOfParticipatingShareBasedAwards	2128000	USD
CY2020	regi	Effect Of Participating Share Based Awards EffectOfParticipatingShareBasedAwards	2398000	USD
CY2019	regi	Effect Of Participating Share Based Awards EffectOfParticipatingShareBasedAwards	8238000	USD
CY2021	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Diluted NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted	211691000	USD
CY2020	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Diluted NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted	120415000	USD
CY2019	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Diluted NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted	364257000	USD
CY2019	us-gaap	Net Income Loss From Discontinued Operations Available To Common Shareholders Basic NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic	-9667000	USD
CY2021	regi	Adjusted Net Income From Discontinued Operations Available To Common Shareholders Effect Of Participating Securities AdjustedNetIncomeFromDiscontinuedOperationsAvailableToCommonShareholdersEffectOfParticipatingSecurities	0	USD
CY2020	regi	Adjusted Net Income From Discontinued Operations Available To Common Shareholders Effect Of Participating Securities AdjustedNetIncomeFromDiscontinuedOperationsAvailableToCommonShareholdersEffectOfParticipatingSecurities	0	USD
CY2019	regi	Adjusted Net Income From Discontinued Operations Available To Common Shareholders Effect Of Participating Securities AdjustedNetIncomeFromDiscontinuedOperationsAvailableToCommonShareholdersEffectOfParticipatingSecurities	0	USD
CY2021	regi	Adjusted Net Incomefrom Discontinued Operations Available To Common Stockholders AdjustedNetIncomefromDiscontinuedOperationsAvailableToCommonStockholders	0	USD
CY2020	regi	Adjusted Net Incomefrom Discontinued Operations Available To Common Stockholders AdjustedNetIncomefromDiscontinuedOperationsAvailableToCommonStockholders	0	USD
CY2019	regi	Adjusted Net Incomefrom Discontinued Operations Available To Common Stockholders AdjustedNetIncomefromDiscontinuedOperationsAvailableToCommonStockholders	-9667000	USD
CY2021	regi	Effect Of Participating Share Based Awards On Discontinued Operations EffectOfParticipatingShareBasedAwardsOnDiscontinuedOperations	0	USD
CY2020	regi	Effect Of Participating Share Based Awards On Discontinued Operations EffectOfParticipatingShareBasedAwardsOnDiscontinuedOperations	0	USD
CY2019	regi	Effect Of Participating Share Based Awards On Discontinued Operations EffectOfParticipatingShareBasedAwardsOnDiscontinuedOperations	0	USD
CY2021	us-gaap	Net Income Loss From Discontinued Operations Available To Common Shareholders Diluted NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersDiluted	0	USD
CY2020	us-gaap	Net Income Loss From Discontinued Operations Available To Common Shareholders Diluted NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersDiluted	0	USD
CY2019	us-gaap	Net Income Loss From Discontinued Operations Available To Common Shareholders Diluted NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersDiluted	-9667000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	211691000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	120415000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	354804000	USD
CY2021	regi	Adjusted Net Income Availableto Common Shareholders Effectof Participating Securities AdjustedNetIncomeAvailabletoCommonShareholdersEffectofParticipatingSecurities	-2128000	USD
CY2020	regi	Adjusted Net Income Availableto Common Shareholders Effectof Participating Securities AdjustedNetIncomeAvailabletoCommonShareholdersEffectofParticipatingSecurities	-2398000	USD
CY2019	regi	Adjusted Net Income Availableto Common Shareholders Effectof Participating Securities AdjustedNetIncomeAvailabletoCommonShareholdersEffectofParticipatingSecurities	-8024000	USD
CY2021	regi	Adjusted Net Income Available To Common Stockholders AdjustedNetIncomeAvailableToCommonStockholders	213819000	USD
CY2020	regi	Adjusted Net Income Available To Common Stockholders AdjustedNetIncomeAvailableToCommonStockholders	122813000	USD
CY2019	regi	Adjusted Net Income Available To Common Stockholders AdjustedNetIncomeAvailableToCommonStockholders	362828000	USD
CY2021	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	2128000	USD
CY2020	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	2398000	USD
CY2019	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	8024000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	211691000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	120415000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	354804000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	47302924	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39199687	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	38288610	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	3915439	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	3589065	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	415304	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	571863	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	43686989	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	42320980	shares
CY2021	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	4.44
CY2019	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	443305	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	47718228	shares
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.76
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	8.61
CY2021	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.25
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.44
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.76
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.38
CY2021	us-gaap	Revenues Revenues	3244050000	USD
CY2020	us-gaap	Revenues Revenues	2137148000	USD
CY2019	us-gaap	Revenues Revenues	2625216000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	199340000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	128742000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	371925000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	69484000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	53943000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	58755000	USD
CY2021	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	99549000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	63642000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	42518000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	43864000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	16080000	USD
CY2021Q4	us-gaap	Assets Assets	2558944000	USD
CY2020Q4	us-gaap	Assets Assets	1461398000	USD
CY2021	us-gaap	Revenues Revenues	3244050000	USD
CY2020	us-gaap	Revenues Revenues	2137148000	USD
CY2019	us-gaap	Revenues Revenues	2625216000	USD
CY2021Q4	us-gaap	Noncurrent Assets NoncurrentAssets	677444000	USD
CY2021Q4	us-gaap	Contractual Obligation Due In Second Year ContractualObligationDueInSecondYear	61071000	USD
CY2020Q4	us-gaap	Noncurrent Assets NoncurrentAssets	594796000	USD
CY2021Q4	us-gaap	Contractual Obligation ContractualObligation	500856000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	0	USD
CY2021Q4	us-gaap	Contractual Obligation Due In Next Twelve Months ContractualObligationDueInNextTwelveMonths	121716000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	9083000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	21800000	USD
CY2021Q4	us-gaap	Contractual Obligation Due In Third Year ContractualObligationDueInThirdYear	21956000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	21800000	USD
CY2021Q4	us-gaap	Contractual Obligation Due In Fourth Year ContractualObligationDueInFourthYear	21800000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	21800000	USD
CY2021Q4	us-gaap	Contractual Obligation Due In Fifth Year ContractualObligationDueInFifthYear	21800000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	252513000	USD
CY2021Q4	us-gaap	Contractual Obligation Due After Fifth Year ContractualObligationDueAfterFifthYear	252513000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	326996000	USD
CY2021Q4	us-gaap	Contractual Obligation ContractualObligation	500856000	USD
CY2021Q1	us-gaap	Income Tax Examination Penalties Accrued IncomeTaxExaminationPenaltiesAccrued	40505000	USD
	us-gaap	Loss Contingency New Claims Filed Number LossContingencyNewClaimsFiledNumber	2	claim
CY2021Q1	us-gaap	Revenues Revenues	539744000	USD
CY2021Q2	us-gaap	Revenues Revenues	816220000	USD
CY2021Q3	us-gaap	Revenues Revenues	1006342000	USD
CY2021Q4	us-gaap	Revenues Revenues	881744000	USD
CY2021Q1	us-gaap	Gross Profit GrossProfit	73802000	USD
CY2021Q2	us-gaap	Gross Profit GrossProfit	123513000	USD
CY2021Q3	us-gaap	Gross Profit GrossProfit	88908000	USD
CY2021Q4	us-gaap	Gross Profit GrossProfit	83670000	USD
CY2021Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	31177000	USD
CY2021Q2	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	35015000	USD
CY2021Q3	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	34354000	USD
CY2021Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.03
CY2021Q4	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	39965000	USD
CY2021Q1	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
CY2021Q2	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	39000	USD
CY2021Q3	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
CY2021Q4	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	1423000	USD
CY2021Q1	us-gaap	Asset Impairment Charges AssetImpairmentCharges	822000	USD
CY2021Q2	us-gaap	Asset Impairment Charges AssetImpairmentCharges	916000	USD
CY2021Q3	us-gaap	Asset Impairment Charges AssetImpairmentCharges	3498000	USD
CY2021Q4	us-gaap	Asset Impairment Charges AssetImpairmentCharges	2123000	USD
CY2021Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	41803000	USD
CY2021Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	87621000	USD
CY2021Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	51056000	USD
CY2021Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	43005000	USD
CY2021Q1	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-948000	USD
CY2021Q2	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-5855000	USD
CY2021Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-7937000	USD
CY2021Q4	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-9405000	USD
CY2021Q1	us-gaap	Profit Loss ProfitLoss	39222000	USD
CY2021Q2	us-gaap	Profit Loss ProfitLoss	79516000	USD
CY2021Q3	us-gaap	Profit Loss ProfitLoss	42467000	USD
CY2021Q4	us-gaap	Profit Loss ProfitLoss	52614000	USD
CY2021Q1	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	38583000	USD
CY2021Q2	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	78787000	USD
CY2021Q3	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	42133000	USD
CY2021Q4	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	52212000	USD
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.95
CY2021Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.64
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.84
CY2021Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.04
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.88
CY2021Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.62
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.83
CY2020Q1	us-gaap	Revenues Revenues	472957000	USD
CY2020Q2	us-gaap	Revenues Revenues	543905000	USD
CY2020Q3	us-gaap	Revenues Revenues	572358000	USD
CY2020Q4	us-gaap	Revenues Revenues	547928000	USD
CY2020Q1	us-gaap	Gross Profit GrossProfit	105561000	USD
CY2020Q2	us-gaap	Gross Profit GrossProfit	22556000	USD
CY2020Q3	us-gaap	Gross Profit GrossProfit	73956000	USD
CY2020Q4	us-gaap	Gross Profit GrossProfit	66281000	USD
CY2020Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	27485000	USD
CY2020Q2	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	28427000	USD
CY2020Q3	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	31059000	USD
CY2020Q4	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	32331000	USD
CY2020Q1	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
CY2020Q2	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	187000	USD
CY2020Q3	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
CY2020Q4	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	18000	USD
CY2020Q1	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2020Q2	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2020Q3	us-gaap	Asset Impairment Charges AssetImpairmentCharges	19256000	USD
CY2020Q4	us-gaap	Asset Impairment Charges AssetImpairmentCharges	3148000	USD
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	78076000	USD
CY2020Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-5684000	USD
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	23641000	USD
CY2020Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	30820000	USD
CY2020Q1	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-2078000	USD
CY2020Q2	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	5628000	USD
CY2020Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	68000	USD
CY2020Q4	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-1729000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	74667000	USD
CY2020Q2	us-gaap	Profit Loss ProfitLoss	-1685000	USD
CY2020Q3	us-gaap	Profit Loss ProfitLoss	22663000	USD
CY2020Q4	us-gaap	Profit Loss ProfitLoss	27168000	USD
CY2020Q1	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	73158000	USD
CY2020Q2	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	-1685000	USD
CY2020Q3	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	22223000	USD
CY2020Q4	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	26685000	USD
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.88
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.04
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.57
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.68
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.67
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.04
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.51
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.60
CY2021	dei	Auditor Name AuditorName	Deloitte & Touche LLP
CY2021	dei	Auditor Firm AuditorFirmId	34

Files In Submission

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Renewable Energy Group, Inc.

2021 Q4 Form 10-K Financial Statement

#000162828022004504 Filed on March 01, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission