$NNI
NELNET INC Stock $nni

$nni Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000125860221000027 Filed on February 25, 2021

Income Statement

Concept	2020 Q4	2020 Q1	2020
Revenue	$326.1M	$189.2M	$619.7M
YoY Change	-20.41%	-24.5%	-34.68%
Cost Of Revenue	$76.60M	$28.39M	$105.0M
YoY Change	-55.47%	9.95%	2.93%
Gross Profit	$249.5M	$160.8M	$514.6M
YoY Change	4.96%	-28.46%	-39.21%
Gross Profit Margin	76.51%	85.0%	83.05%
Selling, General & Admin	$136.6M	$119.9M	$515.7M
YoY Change	6.8%	5.27%	8.27%
% of Gross Profit	54.75%	74.56%	100.21%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$49.30M	$48.76M	$198.5M
YoY Change	-1.79%	3.87%	3.02%
% of Gross Profit	19.76%	30.32%	38.57%
Operating Expenses	$213.9M	$190.9M	$781.1M
YoY Change	14.81%	6.6%	2.4%
Operating Profit	$35.60M	-$30.11M	-$266.5M
YoY Change	-30.74%	-165.91%	-417.88%
Interest Expense	-$1.700M	$134.1M	$330.1M
YoY Change	-525.0%	-30.06%	-52.8%
% of Operating Profit	-4.78%
Other Income/Expense, Net	$45.39M	$43.38M	$160.6M
YoY Change	-2.82%	-0.99%	-17.35%
Pretax Income	$302.2M	-$49.90M	$450.5M
YoY Change	493.71%	-194.08%	154.88%
Income Tax	$70.57M	-$10.13M	$100.9M
% Of Pretax Income	23.35%		22.39%
Net Earnings	$235.0M	-$40.53M	$352.4M
YoY Change	454.49%	-197.45%	148.54%
Net Earnings / Revenue	72.06%	-21.42%	56.88%
Basic Earnings Per Share			$9.02
Diluted Earnings Per Share	$6.104M	-$1.028M	$9.02
COMMON SHARES
Basic Shares Outstanding			39.06M shares
Diluted Shares Outstanding			39.06M shares

Balance Sheet

Concept	2020 Q4	2020 Q1	2020
SHORT-TERM ASSETS
Cash & Short-Term Investments	$511.9M	$288.2M	$121.0M
YoY Change	156.58%	97.48%	-9.7%
Cash & Equivalents	$121.2M	$204.8M	$121.0M
Short-Term Investments	$390.6M	$83.31M
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables	$76.00M	$63.00M	$76.00M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$197.0M	$268.0M	$197.0M
YoY Change	-79.96%	-69.09%	-79.96%
LONG-TERM ASSETS
Property, Plant & Equipment	$123.5M	$351.1M	$142.0M
YoY Change	-64.53%	7.1%	-62.73%
Goodwill	$142.1M	$156.9M
YoY Change	-9.44%	0.0%
Intangibles	$75.07M	$74.13M
YoY Change	-7.93%	-29.93%
Long-Term Investments	$993.0M	$254.0M	$993.0M
YoY Change	302.02%	9.96%	302.02%
Other Assets	$837.0M	$895.0M	$837.0M
YoY Change	-23.14%	-8.39%	-23.14%
Total Long-Term Assets	$22.45B	$23.01B	$22.45B
YoY Change	-1.22%	-3.53%	-1.22%
TOTAL ASSETS
Total Short-Term Assets	$197.0M	$268.0M	$197.0M
Total Long-Term Assets	$22.45B	$23.01B	$22.45B
Total Assets	$22.65B	$23.28B	$22.65B
YoY Change	-4.48%	-5.83%	-4.48%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$301.0M	$220.0M	$301.0M
YoY Change	-31.28%	1.85%	-31.28%
Accrued Expenses	$29.00M	$44.00M	$53.00M
YoY Change	-64.2%	-54.64%	-38.37%
Deferred Revenue
YoY Change
Short-Term Debt	$55.00M	$0.00	$55.00M
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$385.0M	$264.0M	$409.0M
YoY Change	-25.82%	-15.65%	-21.95%
LONG-TERM LIABILITIES
Long-Term Debt	$19.32B	$20.47B	$19.32B
YoY Change	-5.88%	-6.27%	-5.88%
Other Long-Term Liabilities	$312.0M	$224.0M	$288.0M
YoY Change	15.56%	-7.44%	8.68%
Total Long-Term Liabilities	$19.63B	$20.69B	$19.61B
YoY Change	-5.61%	-6.28%	-5.7%
TOTAL LIABILITIES
Total Short-Term Liabilities	$385.0M	$264.0M	$409.0M
Total Long-Term Liabilities	$19.63B	$20.69B	$19.61B
Total Liabilities	$20.02B	$20.95B	$20.01B
YoY Change	-6.1%	-6.42%	-6.13%
SHAREHOLDERS EQUITY
Retained Earnings	$2.622B	$2.359B
YoY Change	10.27%	1.61%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.632B	$2.321B	$2.632B
YoY Change
Total Liabilities & Shareholders Equity	$22.65B	$23.28B	$22.65B
YoY Change	-4.48%	-5.83%	-4.48%

Cashflow Statement

Concept	2020 Q4	2020 Q1	2020
OPERATING ACTIVITIES
Net Income	$235.0M	-$40.53M	$352.4M
YoY Change	454.49%	-197.45%	148.54%
Depreciation, Depletion And Amortization	$49.30M	$48.76M	$198.5M
YoY Change	-1.79%	3.87%	3.02%
Cash From Operating Activities	$39.80M	-$144.5M	$212.8M
YoY Change	-74.49%	3.43%	-28.8%
INVESTING ACTIVITIES
Capital Expenditures	-$32.60M	$25.56M	$113.3M
YoY Change	31.45%	3.01%	22.5%
Acquisitions			$29.99M
YoY Change
Other Investing Activities	-$299.8M	$32.89M	$168.2M
YoY Change	-184.02%	105.96%	62.92%
Cash From Investing Activities	-$332.4M	$105.7M	$621.2M
YoY Change	-200.12%	-72.65%	-59.25%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$842.0K	$71.71M
YoY Change		-94.7%	84.53%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	349.5M	-$83.48M	-$1.098B
YoY Change	-186.6%	-78.45%	-38.76%
NET CHANGE
Cash From Operating Activities	39.80M	-$144.5M	$212.8M
Cash From Investing Activities	-332.4M	$105.7M	$621.2M
Cash From Financing Activities	349.5M	-$83.48M	-$1.098B
Net Change In Cash	56.90M	-$122.3M	-$264.2M
YoY Change	-32.58%	-13.14%	-974.56%
FREE CASH FLOW
Cash From Operating Activities	$39.80M	-$144.5M	$212.8M
Capital Expenditures	-$32.60M	$25.56M	$113.3M
Free Cash Flow	$72.40M	-$170.0M	$99.50M
YoY Change	-59.96%	3.37%	-51.79%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
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CY2020	dei	Entity File Number EntityFileNumber	001-31924
CY2020	dei	Entity Registrant Name EntityRegistrantName	NELNET, INC
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	NE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	84-0748903
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	121 South 13th Street, Suite 100
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CY2018	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	5.57
CY2020	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	39059588	shares
CY2019	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	40047402	shares
CY2018	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	40909022	shares
CY2020	us-gaap	Profit Loss ProfitLoss	349626000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	141294000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	227524000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	6637000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-1199000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	1056000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	2521000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	978000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	986000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-288000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	69000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3130000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-911000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	9000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	352756000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	140383000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	227533000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-2817000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-509000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-389000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	355573000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	140892000	USD
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	29485000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	227922000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2165387000	USD
CY2018	us-gaap	Noncontrolling Interest Increase From Sale Of Parent Equity Interest NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest	1023000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	227524000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	9000	USD
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	525000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	26839000	USD
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	5174000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6194000	USD
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	45331000	USD
CY2018	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	19101000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2314779000	USD
CY2019	us-gaap	Noncontrolling Interest Increase From Sale Of Parent Equity Interest NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest	4756000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	141294000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-911000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	4103000	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	4851000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6401000	USD
CY2019	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	40411000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2391094000	USD
CY2020	us-gaap	Noncontrolling Interest Increase From Sale Of Parent Equity Interest NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest	219265000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	349626000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3130000	USD
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	16123000	USD
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	31778000	USD
CY2020	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	5628000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7290000	USD
CY2020	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	73358000	USD
CY2020	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	600000	USD
CY2020	us-gaap	Noncontrolling Interest Decrease From Deconsolidation NoncontrollingInterestDecreaseFromDeconsolidation	208175000	USD
CY2020	us-gaap	Stockholders Equity Other StockholdersEquityOther	-1218000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2628349000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	352443000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	141803000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	227913000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-2817000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-509000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-389000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	349626000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	141294000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	227524000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	198473000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	192662000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	184682000	USD
CY2020	nni	Student Loan Discount Accretion StudentLoanDiscountAccretion	-35285000	USD
CY2019	nni	Student Loan Discount Accretion StudentLoanDiscountAccretion	-35824000	USD
CY2018	nni	Student Loan Discount Accretion StudentLoanDiscountAccretion	-40800000	USD
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	63360000	USD
CY2019	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	39000000	USD
CY2018	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	23000000	USD
CY2020	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-28144000	USD
CY2019	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-76195000	USD
CY2018	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	1014000	USD
CY2020	nni	Proceeds From Payments To Terminate And Or Amend Derivative Instruments ProceedsFromPaymentsToTerminateAndOrAmendDerivativeInstruments	0	USD
CY2019	nni	Proceeds From Payments To Terminate And Or Amend Derivative Instruments ProceedsFromPaymentsToTerminateAndOrAmendDerivativeInstruments	-12530000	USD
CY2018	nni	Proceeds From Payments To Terminate And Or Amend Derivative Instruments ProceedsFromPaymentsToTerminateAndOrAmendDerivativeInstruments	10283000	USD
CY2020	nni	Payments For Proceeds From Clearinghouse PaymentsForProceedsFromClearinghouse	-26747000	USD
CY2019	nni	Payments For Proceeds From Clearinghouse PaymentsForProceedsFromClearinghouse	-70685000	USD
CY2018	nni	Payments For Proceeds From Clearinghouse PaymentsForProceedsFromClearinghouse	40382000	USD
CY2020	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	287579000	USD
CY2019	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	0	USD
CY2018	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	0	USD
CY2020	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	33023000	USD
CY2019	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	17261000	USD
CY2018	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	0	USD
CY2020	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	14055000	USD
CY2019	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	3095000	USD
CY2018	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	8139000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	1924000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-16553000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	359000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	7974000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7265000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	10981000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	16739000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	6781000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	6539000	USD
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	24723000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	11721000	USD
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-186000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-584000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	2551000	USD
CY2020	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	61090000	USD
CY2019	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	54586000	USD
CY2018	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	248869000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-40880000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	55949000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-3059000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-59182000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	19858000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	4069000	USD
CY2020	nni	Increase Decrease In Operating Lease Right Of Use Asset IncreaseDecreaseInOperatingLeaseRightOfUseAsset	-11594000	USD
CY2019	nni	Increase Decrease In Operating Lease Right Of Use Asset IncreaseDecreaseInOperatingLeaseRightOfUseAsset	-8793000	USD
CY2018	nni	Increase Decrease In Operating Lease Right Of Use Asset IncreaseDecreaseInOperatingLeaseRightOfUseAsset	0	USD
CY2020	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-18584000	USD
CY2019	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-14394000	USD
CY2018	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	11640000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	35907000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	49100000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-12506000	USD
CY2020	nni	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-9401000	USD
CY2019	nni	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-8678000	USD
CY2018	nni	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	0	USD
CY2020	us-gaap	Increase Decrease In Payables To Customers IncreaseDecreaseInPayablesToCustomers	-136285000	USD
CY2019	us-gaap	Increase Decrease In Payables To Customers IncreaseDecreaseInPayablesToCustomers	68078000	USD
CY2018	us-gaap	Increase Decrease In Payables To Customers IncreaseDecreaseInPayablesToCustomers	59388000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	212815000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	298915000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	270892000	USD
CY2020	us-gaap	Payments To Acquire Finance Receivables PaymentsToAcquireFinanceReceivables	1459696000	USD
CY2019	us-gaap	Payments To Acquire Finance Receivables PaymentsToAcquireFinanceReceivables	1906669000	USD
CY2018	us-gaap	Payments To Acquire Finance Receivables PaymentsToAcquireFinanceReceivables	3847553000	USD
CY2020	us-gaap	Payments To Fund Longterm Loans To Related Parties PaymentsToFundLongtermLoansToRelatedParties	147539000	USD
CY2019	us-gaap	Payments To Fund Longterm Loans To Related Parties PaymentsToFundLongtermLoansToRelatedParties	101538000	USD
CY2018	us-gaap	Payments To Fund Longterm Loans To Related Parties PaymentsToFundLongtermLoansToRelatedParties	74698000	USD
CY2020	us-gaap	Proceeds From Collection Of Finance Receivables ProceedsFromCollectionOfFinanceReceivables	2644347000	USD
CY2019	us-gaap	Proceeds From Collection Of Finance Receivables ProceedsFromCollectionOfFinanceReceivables	3462391000	USD
CY2018	us-gaap	Proceeds From Collection Of Finance Receivables ProceedsFromCollectionOfFinanceReceivables	3322783000	USD
CY2020	us-gaap	Proceeds From Sale Of Finance Receivables ProceedsFromSaleOfFinanceReceivables	136126000	USD
CY2019	us-gaap	Proceeds From Sale Of Finance Receivables ProceedsFromSaleOfFinanceReceivables	196564000	USD
CY2018	us-gaap	Proceeds From Sale Of Finance Receivables ProceedsFromSaleOfFinanceReceivables	23712000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	471510000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	1010000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	46424000	USD
CY2020	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	173784000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	105000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	71415000	USD
CY2020	us-gaap	Proceeds From Securitizations Of Consumer Loans ProceedsFromSecuritizationsOfConsumerLoans	44213000	USD
CY2019	us-gaap	Proceeds From Securitizations Of Consumer Loans ProceedsFromSecuritizationsOfConsumerLoans	6593000	USD
CY2018	us-gaap	Proceeds From Securitizations Of Consumer Loans ProceedsFromSecuritizationsOfConsumerLoans	0	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	168216000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	103250000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	67040000	USD
CY2020	nni	Proceeds From Investments And Notes Receivables ProceedsFromInvestmentsAndNotesReceivables	13011000	USD
CY2019	nni	Proceeds From Investments And Notes Receivables ProceedsFromInvestmentsAndNotesReceivables	63879000	USD
CY2018	nni	Proceeds From Investments And Notes Receivables ProceedsFromInvestmentsAndNotesReceivables	23039000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	113312000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	92499000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	125023000	USD
CY2020	nni	Payments To Acquire Businesses Net Of Cash Acquired And Proceeds From Divestiture Of Business PaymentsToAcquireBusinessesNetOfCashAcquiredAndProceedsFromDivestitureOfBusiness	29989000	USD
CY2019	nni	Payments To Acquire Businesses Net Of Cash Acquired And Proceeds From Divestiture Of Business PaymentsToAcquireBusinessesNetOfCashAcquiredAndProceedsFromDivestitureOfBusiness	0	USD
CY2018	nni	Payments To Acquire Businesses Net Of Cash Acquired And Proceeds From Divestiture Of Business PaymentsToAcquireBusinessesNetOfCashAcquiredAndProceedsFromDivestitureOfBusiness	12562000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	621219000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	1524566000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-732351000	USD
CY2020	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	3129485000	USD
CY2019	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	4698878000	USD
CY2018	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	3113503000	USD
CY2020	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	1884689000	USD
CY2019	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	2997972000	USD
CY2018	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	3922962000	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	8674000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	14406000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	13808000	USD
CY2020	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	USD
CY2019	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	14030000	USD
CY2018	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	USD
CY2020	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	54633000	USD
CY2019	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	0	USD
CY2018	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	0	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	31778000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	29485000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	26839000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	73358000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	40411000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	45331000	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1653000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1552000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1359000	USD
CY2020	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	600000	USD
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	0	USD
CY2018	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	13449000	USD
CY2020	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	205768000	USD
CY2019	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	4650000	USD
CY2018	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	918000	USD
CY2020	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	1088000	USD
CY2019	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	235000	USD
CY2018	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	525000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1098240000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1793271000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	711784000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-264206000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	30210000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	250325000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1222601000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1192391000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	942066000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	958395000	USD
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CY2020	us-gaap	Nature Of Operations NatureOfOperations	Description of Business<div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Nelnet, Inc. and its subsidiaries (“Nelnet” or the “Company”) is a diverse company with a purpose to serve others and a vision to make customers' dreams possible by delivering customer focused products and services. The largest operating businesses engage in loan servicing and education technology, services, and payment processing, and the Company also has a significant investment in communications. A significant portion of the Company's revenue is net interest income earned on a portfolio of federally insured student loans. The Company also makes investments to further diversify the Company both within and outside of its historical core education-related businesses, including, but not limited to, investments in real estate, early-stage and emerging growth companies, and renewable energy. Substantially all revenue from external customers is earned, and all long-lived assets are located, in the United States.</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company was formed as a Nebraska corporation in 1978 to service federal student loans for two local banks. The Company built on this initial foundation as a servicer to become a leading originator, holder, and servicer of federal student loans, principally consisting of loans originated under the Federal Family Education Loan Program (“FFELP” or “FFEL Program”) of the U.S. Department of Education (the “Department”).</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Health Care and Education Reconciliation Act of 2010 (the “Reconciliation Act of 2010”) discontinued new loan originations under the FFEL Program, effective July 1, 2010, and requires that all new federal student loan originations be made directly by the Department through the Federal Direct Loan Program. This law does not alter or affect the terms and conditions of existing FFELP loans. As a result of this law, the Company no longer originates new FFELP loans. To reduce its reliance on interest income on student loans, the Company has expanded its services and products. This expansion has been accomplished through internal growth and innovation as well as business acquisitions.</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company's reportable operating segments include:</span></div><div style="text-align:justify;text-indent:31.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:1pt"> Loan Servicing and Systems (“LSS”)</span></div><div style="text-align:justify;text-indent:31.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:1pt"> Education Technology, Services, and Payment Processing (“ETS&PP”)</span></div><div style="text-align:justify;text-indent:31.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:1pt"> Communications</span></div><div style="text-align:justify;text-indent:31.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:1pt"> Asset Generation and Management (“AGM”)</span></div><div style="margin-bottom:9pt;text-align:justify;text-indent:31.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:1pt"> Nelnet Bank</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">A description of each reportable operating segment is included below. See note 15 for additional information on the Company's segment reporting.</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Loan Servicing and Systems</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The primary service offerings of the Loan Servicing and Systems operating segment include:</span></div><div style="padding-left:36pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">Servicing federally-owned student loans for the Department of Education</span></div><div style="padding-left:36pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">Servicing FFELP loans</span></div><div style="padding-left:36pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">Originating and servicing private education and consumer loans</span></div><div style="padding-left:36pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">Backup servicing for FFELP, private education and consumer loans</span></div><div style="padding-left:36pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">Providing student loan servicing software and other information technology products and services</span></div><div style="padding-left:36pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">Customer acquisition, management services, and backup servicing for community solar developers</span></div><div style="margin-bottom:9pt;padding-left:36pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">Providing outsourced services including call center, processing, and marketing services</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">LSS provides for the servicing of the Company's student loan portfolio and the portfolios of third parties. The loan servicing activities include loan conversion activities, application processing, borrower updates, customer service, payment processing, due diligence procedures, funds management reconciliations, and claim processing. These activities are performed internally for the Company's portfolio in addition to generating external fee revenue when performed for third-party clients. In addition, LSS provides backup servicing to third-parties, which allows a transfer of the customer’s servicing volume to the Company’s platform and becoming a full servicing customer if their existing servicer cannot perform their duties.</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%">On February 7, 2018, NDS acquired Great Lakes Educational Loan Services, Inc. (“Great Lakes”). See note 8 for additional information related to this acquisition. Nelnet Servicing, LLC, (“Nelnet Servicing”), a subsidiary of the Company, and Great Lakes are two of four large private sector companies (referred to as Title IV Additional Servicers, or “TIVAS”) awarded a student loan servicing contract by the Department to provide additional servicing capacity for loans owned by the Department.</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">This segment also provides student loan servicing software, which is used internally and licensed to third-party student loan holders and servicers. These software systems have been adapted so that they can be offered as hosted servicing software solutions usable by third parties to service various types of student loans, including Federal Direct Loan Program and FFEL Program loans.</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">This segment also provides business process outsourcing primarily specializing in contact center management. The contact center solutions and services include taking inbound calls, helping with outreach campaigns and sales, interacting with customers through multi-channels, and processing and technology services.</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Education Technology, Services, and Payment Processing</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Education Technology, Services, and Payment Processing segment (known as Nelnet Business Solutions (“NBS”)) provides service and technology to administrators, teachers, students, and families of K-12 schools and higher education institutions. The Company's payment processing services and technologies also serve customers outside of education.</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">In the K-12 market, the Company (known as FACTS) offers (i) financial management, including tuition payment plans, financial needs assessment (grant and aid), incidental billing, advanced accounting, and payment forms; (ii) school administration solutions, including school information system software that automates the flow of information between school administrators, teachers, and parents and includes administrative processes such as admissions, enrollment, scheduling, cafeteria management, attendance, and grade book management; (iii) advancement (giving management), including a comprehensive donation platform that streamlines donor communications, organizes donor information, and provides access to data analysis and reporting; (iv) enrollment and communications, including website design and cost effective admissions software; (v) professional development and educational instruction services; and (vi) innovative technology products that aid in teacher and student evaluations. In the higher education market, the Company (known as Nelnet Campus Commerce) offers solutions including (i) tuition payment plans and (ii) payment technology and processing.</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Outside of the education market, the Company also offers technology and payment services including electronic transfer and credit card processing, reporting, billing and invoicing, mobile and virtual terminal solutions, and specialized integrations to business software. In addition, this operating segment offers mobile first technology focused on increasing engagement, online giving, and communication for church and not-for-profit customers. Additionally, the Company may earn revenue for payment processing fees when families make tuition payments.</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Communications</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">ALLO Communications LLC (“ALLO”) provides pure fiber optic service to homes and businesses for internet, television, and telephone services. ALLO derives its revenue primarily from the sale of communication services to residential, governmental, and business customers in Nebraska and Colorado. Internet and television services include revenue from residential and business customers for subscriptions to ALLO's data and video products. ALLO data services provide high-speed internet access over ALLO's all-fiber network at various symmetrical speeds of up to 1 gigabit per second for residential customers and is capable of providing symmetrical speeds of over 1 gigabit per second for business customers. Telephone services include local and long distance telephone service, hosted PBX services, and other services.</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%">On December 21, 2020 the Company deconsolidated ALLO from the Company’s consolidated financial statements due to ALLO’s recapitalization. The recapitalization of ALLO is not considered a strategic shift in the Company’s involvement with ALLO and ALLO’s results of operations, prior to deconsolidation, are presented by the Company as a reportable operating segment. See note 2, “Recent Developments - ALLO Recapitalization,” for a description of this transaction and the Company’s continued involvement.</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Asset Generation and Management</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company's Asset Generation and Management operating segment includes the acquisition, management, and ownership of the Company's loan assets (excluding loan assets held by Nelnet Bank). Substantially all loan assets included in this segment are student loans originated under the FFEL Program, including the Stafford Loan Program, the PLUS Loan program, and loans that reflect the consolidation into a single loan of certain previously separate borrower obligations (“Consolidation” loans). AGM also acquires private education and consumer loans. AGM generates a substantial portion of its earnings from the spread, referred to as the Company's loan spread, between the yield it receives on its loan portfolio and the associated costs to finance such portfolio. The loan assets are held in a series of lending subsidiaries and associated securitization trusts designed specifically for this purpose. In addition to the loan spread earned on its portfolio, all costs and activity associated with managing the portfolio, such as servicing of the assets and debt maintenance, are included in this segment.</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Nelnet Bank</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">On November 2, 2020, the Company obtained final approval from the Federal Deposit Insurance Corporation ("FDIC") for federal deposit insurance and for a bank charter from the Utah Department of Financial Institutions ("UDFI") in connection with the establishment of Nelnet Bank, and Nelnet Bank launched operations. Nelnet Bank operates as an internet Utah-chartered industrial bank franchise focused on the private education loan marketplace, with a home office in Salt Lake City, Utah.</span></div><div style="margin-bottom:3pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Corporate and Other Activities</span></div><div style="margin-bottom:3pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Other business activities and operating segments that are not reportable are combined and included in Corporate and Other Activities. Corporate and Other Activities include the following items:</span></div><div style="margin-bottom:3pt;padding-left:36pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">The operating results of Whitetail Rock Capital Management, LLC (“WRCM”), the Company's SEC-registered investment advisor subsidiary</span></div><div style="margin-bottom:3pt;padding-left:36pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">Income earned on certain investment activities, including renewable energy (solar) and real estate</span></div><div style="margin-bottom:3pt;padding-left:36pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">Interest expense incurred on unsecured and certain other corporate related debt transactions</span></div><div style="margin-bottom:9pt;padding-left:36pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">Other product and service offerings that are not considered reportable operating segments</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Corporate and Other Activities also include certain corporate activities and overhead functions related to executive management, internal audit, human resources, accounting, legal, enterprise risk management, information technology, occupancy, and marketing. These costs are allocated to each operating segment based on estimated use of such activities and services.</span></div>
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CY2020	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	258588000	USD
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CY2020Q4	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	2300000	USD
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CY2019Q4	nni	Variable Interest Entity Reporting Entity Involvement Maximum Loss Exposure Amount Syndicated To Other Investors VariableInterestEntityReportingEntityInvolvementMaximumLossExposureAmountSyndicatedToOtherInvestors	3000000.0	USD
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CY2019Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-35036000	USD
CY2020Q1	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-1246000	USD
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CY2020Q1	us-gaap	Financing Receivable Accrued Interest Before Allowance For Credit Loss FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss	733497000	USD
CY2020Q1	nni	Non Accretable Discount NonAccretableDiscount	0	USD
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CY2020Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	152928000	USD
CY2019Q4	us-gaap	Notes Receivable Net NotesReceivableNet	21402868000	USD
CY2020Q1	us-gaap	Notes Receivable Net NotesReceivableNet	21378042000	USD
CY2019Q4	us-gaap	Other Liabilities OtherLiabilities	303781000	USD
CY2020Q1	us-gaap	Other Liabilities OtherLiabilities	297823000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2377627000	USD
CY2020Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2358759000	USD
CY2020	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Reclassifications</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Certain amounts previously reported have been reclassified to conform to the current period presentation. These reclassifications include:</span></div><div style="margin-bottom:6pt;padding-left:36pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">Reclassifying the line item "accrued interest receivable" on the Company's consolidated balance sheet to "loans and accrued interest receivable" and "investments";</span></div><div style="margin-bottom:9pt;padding-left:36pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">Reclassifying "gain on sale of loans" that was previously included in "other income" to a new line item on the Company's consolidated statements of income; and</span></div>•Reclassifying “impairment expense” that was previously included in “other expenses” to a new line on the Company’s consolidated statements of income.
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-bottom:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of the consolidated financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make a number of estimates and assumptions that affect the reported amounts of assets and liabilities, reported amounts of revenues and expenses, and other disclosures. Actual results may differ from those estimates.</span></div>
CY2020Q4	nni	Purchased Accrued Interest PurchasedAccruedInterest	92300000	USD
CY2019Q4	nni	Purchased Accrued Interest PurchasedAccruedInterest	112900000	USD
CY2018Q4	nni	Purchased Accrued Interest PurchasedAccruedInterest	181000000.0	USD
CY2020	nni	Loans Receivable Consolidation Loans Rebate Fee Percent LoansReceivableConsolidationLoansRebateFeePercent	0.0105
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	19576651000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	20798719000	USD
CY2020Q4	us-gaap	Financing Receivable Accrued Interest Before Allowance For Credit Loss FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss	794611000	USD
CY2019Q4	us-gaap	Financing Receivable Accrued Interest Before Allowance For Credit Loss FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss	733497000	USD
CY2020Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-9908000	USD
CY2019Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-35036000	USD
CY2020Q4	nni	Non Accretable Discount NonAccretableDiscount	0	USD
CY2019Q4	nni	Non Accretable Discount NonAccretableDiscount	32398000	USD
CY2020Q4	us-gaap	Notes Receivable Net NotesReceivableNet	20185656000	USD
CY2019Q4	us-gaap	Notes Receivable Net NotesReceivableNet	21402868000	USD
CY2020Q3	nni	Securitization Interest Percent SecuritizationInterestPercent	0.254
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	61914000	USD
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	63360000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	28729000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1763000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Loss Purchased With Credit Deterioration Increase FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease	15800000	USD
CY2020	nni	Purchase Saleof Financing Receivables PurchaseSaleofFinancingReceivables	-29424000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	175698000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	60388000	USD
CY2019	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	39000000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	28010000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1536000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Loss Purchased With Credit Deterioration Increase FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease	0	USD
CY2019	nni	Purchase Saleof Financing Receivables PurchaseSaleofFinancingReceivables	-11000000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	61914000	USD
CY2017Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	54590000	USD
CY2018	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	23000000	USD
CY2018	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	18867000	USD
CY2018	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	665000	USD
CY2018	us-gaap	Financing Receivable Allowance For Credit Loss Purchased With Credit Deterioration Increase FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease	0	USD
CY2018	nni	Purchase Saleof Financing Receivables PurchaseSaleofFinancingReceivables	1000000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	60388000	USD
CY2020	us-gaap	Financing Receivable Purchased With Credit Deterioration Amount At Par Value FinancingReceivablePurchasedWithCreditDeteriorationAmountAtParValue	835000000.0	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	238123000	USD
CY2020Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	19320726000	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	274126000	USD
CY2019Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	20529054000	USD
CY2020	us-gaap	Extinguishment Of Debt Amount ExtinguishmentOfDebtAmount	27445000	USD
CY2019	us-gaap	Extinguishment Of Debt Amount ExtinguishmentOfDebtAmount	0	USD
CY2018	us-gaap	Extinguishment Of Debt Amount ExtinguishmentOfDebtAmount	12905000	USD
CY2020	nni	Debt Instrument Repurchase Price DebtInstrumentRepurchasePrice	-25521000	USD
CY2019	nni	Debt Instrument Repurchase Price DebtInstrumentRepurchasePrice	0	USD
CY2018	nni	Debt Instrument Repurchase Price DebtInstrumentRepurchasePrice	-12546000	USD
CY2020	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	1924000	USD
CY2019	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	0	USD
CY2018	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	359000	USD
CY2020	nni	Derivative Settlements Expense Income DerivativeSettlementsExpenseIncome	3679000	USD
CY2019	nni	Derivative Settlements Expense Income DerivativeSettlementsExpenseIncome	45406000	USD
CY2018	nni	Derivative Settlements Expense Income DerivativeSettlementsExpenseIncome	70071000	USD
CY2020	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-28144000	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-76195000	USD
CY2018	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	1014000	USD
CY2020	nni	Derivative Market Value And Foreign Currency Adjustments And Derivative Settlements Net DerivativeMarketValueAndForeignCurrencyAdjustmentsAndDerivativeSettlementsNet	-24465000	USD
CY2019	nni	Derivative Market Value And Foreign Currency Adjustments And Derivative Settlements Net DerivativeMarketValueAndForeignCurrencyAdjustmentsAndDerivativeSettlementsNet	-30789000	USD
CY2018	nni	Derivative Market Value And Foreign Currency Adjustments And Derivative Settlements Net DerivativeMarketValueAndForeignCurrencyAdjustmentsAndDerivativeSettlementsNet	71085000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	340578000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	8042000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	13000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	348607000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	48790000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	3911000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	0	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	52701000	USD
CY2020Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	36227000	USD
CY2020Q4	nni	Equity Securities Fvni Unrealized Gain Gross EquitySecuritiesFVNIUnrealizedGainGross	8768000	USD
CY2020Q4	nni	Equity Securities Fvni Unrealized Loss Gross EquitySecuritiesFVNIUnrealizedLossGross	2954000	USD
CY2020Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	42041000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	9622000	USD
CY2019Q4	nni	Equity Securities Fvni Unrealized Gain Gross EquitySecuritiesFVNIUnrealizedGainGross	4561000	USD
CY2019Q4	nni	Equity Securities Fvni Unrealized Loss Gross EquitySecuritiesFVNIUnrealizedLossGross	1283000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	12900000	USD
CY2020Q4	nni	Marketable Securities Amortized Cost MarketableSecuritiesAmortizedCost	376805000	USD
CY2020Q4	nni	Marketable Securities Unrealized Gain MarketableSecuritiesUnrealizedGain	16810000	USD
CY2020Q4	nni	Marketable Securities Unrealized Loss MarketableSecuritiesUnrealizedLoss	2967000	USD
CY2020Q4	us-gaap	Marketable Securities MarketableSecurities	390648000	USD
CY2019Q4	nni	Marketable Securities Amortized Cost MarketableSecuritiesAmortizedCost	58412000	USD
CY2019Q4	nni	Marketable Securities Unrealized Gain MarketableSecuritiesUnrealizedGain	8472000	USD
CY2019Q4	nni	Marketable Securities Unrealized Loss MarketableSecuritiesUnrealizedLoss	1283000	USD
CY2019Q4	us-gaap	Marketable Securities MarketableSecurities	65601000	USD
CY2020Q4	nni	Beneficial Interest In Securitization Allowance For Credit Loss BeneficialInterestInSecuritizationAllowanceForCreditLoss	4449000	USD
CY2020Q4	us-gaap	Other Investments OtherInvestments	602292000	USD
CY2019Q4	us-gaap	Other Investments OtherInvestments	181498000	USD
CY2020Q4	nni	Investments And Notes Receivables InvestmentsAndNotesReceivables	992940000	USD
CY2019Q4	nni	Investments And Notes Receivables InvestmentsAndNotesReceivables	247099000	USD
CY2020Q4	nni	Debt Securities Available For Sale Fair Value Maturity Allocated And Single Maturity Date Rolling Within One Through Ten Years DebtSecuritiesAvailableForSaleFairValueMaturityAllocatedAndSingleMaturityDateRollingWithinOneThroughTenYears	58600000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	2600000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	31200000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue	24800000	USD
CY2020	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P91M
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	75070000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	81532000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	30800000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	32800000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	30200000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	23042000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	9939000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	9830000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	7457000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	4644000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	20158000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	75070000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	156912000	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	6292000	USD
CY2020	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	21112000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	142092000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	123527000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	348259000	USD
CY2020	us-gaap	Depreciation Depreciation	87900000	USD
CY2019	us-gaap	Depreciation Depreciation	72300000	USD
CY2018	us-gaap	Depreciation Depreciation	56700000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	16000000.0	USD
CY2020Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	6700000	USD
CY2020Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	6700000	USD
CY2020Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	5000000	shares
CY2020Q4	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	3200000	shares
CY2020	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	1594394	shares
CY2020	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	73358000	USD
CY2020	nni	Average Price Of Shares Repurchased Per Share AveragePriceOfSharesRepurchasedPerShare	46.01
CY2019	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	726273	shares
CY2019	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	40411000	USD
CY2019	nni	Average Price Of Shares Repurchased Per Share AveragePriceOfSharesRepurchasedPerShare	55.64
CY2018	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	868147	shares
CY2018	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	45331000	USD
CY2018	nni	Average Price Of Shares Repurchased Per Share AveragePriceOfSharesRepurchasedPerShare	52.22
CY2020	us-gaap	Net Income Loss NetIncomeLoss	352443000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	141803000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	227913000	USD
CY2020	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	39059588	shares
CY2019	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	40047402	shares
CY2018	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	40909022	shares
CY2020	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	9.02
CY2019	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	3.54
CY2018	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	5.57
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	20300000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	20148000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	23445000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	634000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	651000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2523000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1339000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	1810000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	69000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	380000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	2918000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	3097000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	20318000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	20148000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	5400000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	5000000.0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	400000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	100000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	400000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	82832000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	38931000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	45822000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	9815000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3546000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1969000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	239000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	239000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	-2000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	92886000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	42716000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	47789000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	7269000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-4280000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	11783000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	718000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-2922000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-883000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-13000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-63000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	81000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	7974000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7265000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	10981000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	100860000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	35451000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	58770000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.028
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.025
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.024
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.011
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.030
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.019
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.002
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.007
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.010
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.002
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.002
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.223
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.200
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.205
CY2020Q4	nni	Deferred Tax Assets Student Loans DeferredTaxAssetsStudentLoans	26894000	USD
CY2019Q4	nni	Deferred Tax Assets Student Loans DeferredTaxAssetsStudentLoans	15479000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	18081000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	18037000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	10661000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	4112000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	5987000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	9394000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	5061000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	0	USD
CY2020Q4	nni	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	4123000	USD
CY2019Q4	nni	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	5891000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	2546000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	2167000	USD
CY2020Q4	nni	Deferredtaxassetsecuritizations Deferredtaxassetsecuritizations	694000	USD
CY2019Q4	nni	Deferredtaxassetsecuritizations Deferredtaxassetsecuritizations	1261000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	647000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	551000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	74694000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	56892000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	569000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	548000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	74125000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	56344000	USD
CY2020Q4	nni	Deferred Tax Liabilitiesin Partnership Basis DeferredTaxLiabilitiesinPartnershipBasis	64023000	USD
CY2019Q4	nni	Deferred Tax Liabilitiesin Partnership Basis DeferredTaxLiabilitiesinPartnershipBasis	56741000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	20538000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	3775000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	14092000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	11489000	USD
CY2020Q4	nni	Deferred Tax Liabilities Unrealized Gain On Debt And Equity Securities DeferredTaxLiabilitiesUnrealizedGainOnDebtAndEquitySecurities	7703000	USD
CY2019Q4	nni	Deferred Tax Liabilities Unrealized Gain On Debt And Equity Securities DeferredTaxLiabilitiesUnrealizedGainOnDebtAndEquitySecurities	5399000	USD
CY2020Q4	nni	Deferred Tax Liabilities Loan Origination Services DeferredTaxLiabilitiesLoanOriginationServices	5040000	USD
CY2019Q4	nni	Deferred Tax Liabilities Loan Origination Services DeferredTaxLiabilitiesLoanOriginationServices	4647000	USD
CY2020Q4	nni	Deferred Tax Liabilities Lease Right Of Use Asset DeferredTaxLiabilitiesLeaseRightOfUseAsset	4037000	USD
CY2019Q4	nni	Deferred Tax Liabilities Lease Right Of Use Asset DeferredTaxLiabilitiesLeaseRightOfUseAsset	5684000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	2730000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	661000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1003000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	116094000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	91468000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	41969000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	35124000	USD
CY2020Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	21500000	USD
CY2019Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	27300000	USD
	nni	Effective Income Tax Rate Reconciliation Percent Allocated To Segments EffectiveIncomeTaxRateReconciliationPercentAllocatedToSegments	0.24
CY2020	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	619656000	USD
CY2020	us-gaap	Interest Expense InterestExpense	330071000	USD
CY2020	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	289585000	USD
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	63360000	USD
CY2020	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	226225000	USD
CY2020	nni	Intersegment Servicing Revenue IntersegmentServicingRevenue	0	USD
CY2020	us-gaap	Other Income OtherIncome	57561000	USD
CY2020	nni	Gains On Sale Of Student Loans And Debt Repurchases Net. GainsOnSaleOfStudentLoansAndDebtRepurchasesNet.	33023000	USD
CY2020	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	258588000	USD
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	24723000	USD
CY2020	nni	Derivative Settlements Expense Income DerivativeSettlementsExpenseIncome	3679000	USD
CY2020	nni	Derivative Market Value And Foreign Currency Adjustment Net DerivativeMarketValueAndForeignCurrencyAdjustmentNet	-28144000	USD
CY2020	us-gaap	Noninterest Income NoninterestIncome	1110384000	USD
CY2020	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	105018000	USD
CY2020	us-gaap	Labor And Related Expense LaborAndRelatedExpense	501832000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	118699000	USD
CY2020	us-gaap	Other Expenses OtherExpenses	160574000	USD
CY2020	nni	Intersegment Expenses IntersegmentExpenses	0	USD
CY2020	us-gaap	Operating Expenses OperatingExpenses	781105000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	450486000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	100860000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	349626000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-2817000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	352443000	USD
CY2018	us-gaap	Other Income OtherIncome	54805000	USD
CY2018	nni	Gains On Sale Of Student Loans And Debt Repurchases Net. GainsOnSaleOfStudentLoansAndDebtRepurchasesNet.	0	USD
CY2018	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	0	USD
CY2018	nni	Derivative Market Value And Foreign Currency Adjustment Net DerivativeMarketValueAndForeignCurrencyAdjustmentNet	1014000	USD
CY2020Q4	us-gaap	Assets Assets	22646160000	USD
CY2019	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	948677000	USD
CY2019	us-gaap	Interest Expense InterestExpense	699327000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	249350000	USD
CY2019	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	39000000	USD
CY2019	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	210350000	USD
CY2019	nni	Intersegment Servicing Revenue IntersegmentServicingRevenue	0	USD
CY2019	us-gaap	Other Income OtherIncome	47918000	USD
CY2019	nni	Gains On Sale Of Student Loans And Debt Repurchases Net. GainsOnSaleOfStudentLoansAndDebtRepurchasesNet.	17261000	USD
CY2019	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	0	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2019	nni	Derivative Settlements Expense Income DerivativeSettlementsExpenseIncome	45406000	USD
CY2019	nni	Derivative Market Value And Foreign Currency Adjustment Net DerivativeMarketValueAndForeignCurrencyAdjustmentNet	-76195000	USD
CY2019	us-gaap	Noninterest Income NoninterestIncome	831245000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	102026000	USD
CY2019	us-gaap	Labor And Related Expense LaborAndRelatedExpense	463503000	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	11721000	USD
CY2018	nni	Derivative Settlements Expense Income DerivativeSettlementsExpenseIncome	70071000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	105049000	USD
CY2019	us-gaap	Other Expenses OtherExpenses	194272000	USD
CY2019	nni	Intersegment Expenses IntersegmentExpenses	0	USD
CY2019	us-gaap	Operating Expenses OperatingExpenses	762824000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	176745000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	35451000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	141294000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-509000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	141803000	USD
CY2019Q4	us-gaap	Assets Assets	23708970000	USD
CY2018	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	924266000	USD
CY2018	us-gaap	Interest Expense InterestExpense	669906000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	254360000	USD
CY2018	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	23000000	USD
CY2018	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	231360000	USD
CY2018	nni	Intersegment Servicing Revenue IntersegmentServicingRevenue	0	USD
CY2018	us-gaap	Noninterest Income NoninterestIncome	820811000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	76492000	USD
CY2018	us-gaap	Labor And Related Expense LaborAndRelatedExpense	436179000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	86896000	USD
CY2018	us-gaap	Other Expenses OtherExpenses	166310000	USD
CY2018	nni	Intersegment Expenses IntersegmentExpenses	0	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	689385000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	286294000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	58770000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	227524000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-389000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	227913000	USD
CY2018Q4	us-gaap	Assets Assets	25220968000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0393
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	18301000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	32770000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	18733000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	33689000	USD
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	51018000	USD
CY2019	us-gaap	Gain Loss On Investments GainLossOnInvestments	0	USD
CY2018	us-gaap	Gain Loss On Investments GainLossOnInvestments	0	USD
CY2020	us-gaap	Late Fee Income Generated By Servicing Financial Assets Amount LateFeeIncomeGeneratedByServicingFinancialAssetsAmount	5194000	USD
CY2019	us-gaap	Late Fee Income Generated By Servicing Financial Assets Amount LateFeeIncomeGeneratedByServicingFinancialAssetsAmount	12884000	USD
CY2018	us-gaap	Late Fee Income Generated By Servicing Financial Assets Amount LateFeeIncomeGeneratedByServicingFinancialAssetsAmount	12302000	USD
CY2020	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	2205000	USD
CY2019	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	8356000	USD
CY2018	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	9579000	USD
CY2020	nni	Other Income Miscellaneous OtherIncomeMiscellaneous	16271000	USD
CY2019	nni	Other Income Miscellaneous OtherIncomeMiscellaneous	16221000	USD
CY2018	nni	Other Income Miscellaneous OtherIncomeMiscellaneous	19631000	USD
CY2020	us-gaap	Other Income OtherIncome	57561000	USD
CY2020	us-gaap	Lease Cost LeaseCost	13882000	USD
CY2019	us-gaap	Lease Cost LeaseCost	12780000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y7M24D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y3M14D
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0243
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	6578000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	3857000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	2938000	USD
CY2019	us-gaap	Other Income OtherIncome	47918000	USD
CY2018	us-gaap	Other Income OtherIncome	54805000	USD
CY2017Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	32276000	USD
CY2018	nni	Contract With Customer Liability Increase Decrease Deferred Revenue ContractWithCustomerLiabilityIncreaseDecreaseDeferredRevenue	113292000	USD
CY2018	nni	Contract With Customer Liability Revenue Recognized From Prior And Current Period ContractWithCustomerLiabilityRevenueRecognizedFromPriorAndCurrentPeriod	106446000	USD
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	39122000	USD
CY2019	nni	Contract With Customer Liability Increase Decrease Deferred Revenue ContractWithCustomerLiabilityIncreaseDecreaseDeferredRevenue	136487000	USD
CY2019	nni	Contract With Customer Liability Revenue Recognized From Prior And Current Period ContractWithCustomerLiabilityRevenueRecognizedFromPriorAndCurrentPeriod	135963000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	39646000	USD
CY2020	nni	Contract With Customer Liability Increase Decrease Deferred Revenue ContractWithCustomerLiabilityIncreaseDecreaseDeferredRevenue	139478000	USD
CY2020	nni	Contract With Customer Liability Revenue Recognized From Prior And Current Period ContractWithCustomerLiabilityRevenueRecognizedFromPriorAndCurrentPeriod	140422000	USD
CY2020	nni	Contract With Customer Liability Increase Decrease From Deconsolidation ContractWithCustomerLiabilityIncreaseDecreaseFromDeconsolidation	-3925000	USD
CY2020	us-gaap	Contract With Customer Liability Increase Decrease For Contract Acquired In Business Combination ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination	1419000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	36196000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	1562000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	1424000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	4437000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	20796000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	2063000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	18733000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	9181000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	8261000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	5776000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	3745000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	2904000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	5479000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	35346000	USD
CY2018	us-gaap	Operating Lease Expense OperatingLeaseExpense	8400000	USD
CY2020Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	87143000	USD
CY2020Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	96672000	USD
CY2020	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	1
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	11600000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	10800000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	9800000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Discount From Market Price Purchase Date ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate	0.15
CY2020	nni	Non Employee Director Stock At Lower Cost NonEmployeeDirectorStockAtLowerCost	0.85
CY2020	us-gaap	Issuance Of Stock And Warrants For Services Or Claims IssuanceOfStockAndWarrantsForServicesOrClaims	1200000	USD
CY2019	us-gaap	Issuance Of Stock And Warrants For Services Or Claims IssuanceOfStockAndWarrantsForServicesOrClaims	1200000	USD
CY2018	us-gaap	Issuance Of Stock And Warrants For Services Or Claims IssuanceOfStockAndWarrantsForServicesOrClaims	1000000.0	USD
CY2020	nni	Net Premium Paid For Acquisition Of Finance Receivables NetPremiumPaidForAcquisitionOfFinanceReceivables	1200000	USD
CY2019	nni	Net Premium Paid For Acquisition Of Finance Receivables NetPremiumPaidForAcquisitionOfFinanceReceivables	1200000	USD
CY2018	nni	Net Premium Paid For Acquisition Of Finance Receivables NetPremiumPaidForAcquisitionOfFinanceReceivables	0	USD
CY2018Q4	nni	Asset Ownership Percentage AssetOwnershipPercentage	0.65
CY2018Q4	nni	Asset Ownership Percentage Increase From Purchase AssetOwnershipPercentageIncreaseFromPurchase	0.175
CY2018Q4	nni	Payments To Acquire Additional Asset Ownership PaymentsToAcquireAdditionalAssetOwnership	717500	USD
CY2018Q4	nni	Asset Ownership Percentage AssetOwnershipPercentage	0.825
CY2020Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	390648000	USD
CY2019Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	65601000	USD
CY2020Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	390648000	USD
CY2019Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	65601000	USD
CY2020Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	55073000	USD
CY2020Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	66635000	USD
CY2020Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	81322000	USD
CY2020Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	86556000	USD
CY2020Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	76299000	USD
CY2020Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	2999000	USD
CY2020Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-5821000	USD
CY2020Q4	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-10116000	USD
CY2020Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	-21226000	USD
CY2020Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	63636000	USD
CY2020Q1	us-gaap	Other Income OtherIncome	8281000	USD
CY2020Q2	us-gaap	Other Income OtherIncome	60127000	USD
CY2020Q3	us-gaap	Other Income OtherIncome	1502000	USD
CY2020Q4	us-gaap	Other Income OtherIncome	-12350000	USD
CY2020Q1	nni	Gains On Sale Of Student Loans And Debt Repurchases Net. GainsOnSaleOfStudentLoansAndDebtRepurchasesNet.	18206000	USD
CY2020Q2	nni	Gains On Sale Of Student Loans And Debt Repurchases Net. GainsOnSaleOfStudentLoansAndDebtRepurchasesNet.	0	USD
CY2020Q3	nni	Gains On Sale Of Student Loans And Debt Repurchases Net. GainsOnSaleOfStudentLoansAndDebtRepurchasesNet.	14817000	USD
CY2020Q4	nni	Gains On Sale Of Student Loans And Debt Repurchases Net. GainsOnSaleOfStudentLoansAndDebtRepurchasesNet.	0	USD
CY2020Q1	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	0	USD
CY2020Q2	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	0	USD
CY2020Q3	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	0	USD
CY2020Q4	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	258588000	USD
CY2020Q1	us-gaap	Asset Impairment Charges AssetImpairmentCharges	34087000	USD
CY2020Q2	us-gaap	Asset Impairment Charges AssetImpairmentCharges	332000	USD
CY2020Q3	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2020Q4	us-gaap	Asset Impairment Charges AssetImpairmentCharges	-9696000	USD
CY2020Q1	nni	Derivative Market Value And Foreign Currency Adjustments And Derivative Settlements Net DerivativeMarketValueAndForeignCurrencyAdjustmentsAndDerivativeSettlementsNet	-16365000	USD
CY2020Q2	nni	Derivative Market Value And Foreign Currency Adjustments And Derivative Settlements Net DerivativeMarketValueAndForeignCurrencyAdjustmentsAndDerivativeSettlementsNet	1910000	USD
CY2020Q3	nni	Derivative Market Value And Foreign Currency Adjustments And Derivative Settlements Net DerivativeMarketValueAndForeignCurrencyAdjustmentsAndDerivativeSettlementsNet	1049000	USD
CY2020Q4	nni	Derivative Market Value And Foreign Currency Adjustments And Derivative Settlements Net DerivativeMarketValueAndForeignCurrencyAdjustmentsAndDerivativeSettlementsNet	-11059000	USD
CY2020Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	119878000	USD
CY2020Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	119247000	USD
CY2020Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	126096000	USD
CY2020Q4	us-gaap	Labor And Related Expense LaborAndRelatedExpense	136612000	USD
CY2020Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	27648000	USD
CY2020Q2	us-gaap	Depreciation And Amortization DepreciationAndAmortization	29393000	USD
CY2020Q3	us-gaap	Depreciation And Amortization DepreciationAndAmortization	30308000	USD
CY2020Q4	us-gaap	Depreciation And Amortization DepreciationAndAmortization	31350000	USD
CY2020Q1	us-gaap	Other Expenses OtherExpenses	43384000	USD
CY2020Q2	us-gaap	Other Expenses OtherExpenses	37052000	USD
CY2020Q3	us-gaap	Other Expenses OtherExpenses	34744000	USD
CY2020Q4	us-gaap	Other Expenses OtherExpenses	45391000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-10133000	USD
CY2020Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21264000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19156000	USD
CY2020Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	70573000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	-39765000	USD
CY2020Q2	us-gaap	Profit Loss ProfitLoss	86610000	USD
CY2020Q2	us-gaap	Profit Loss ProfitLoss	86610000	USD
CY2020Q3	us-gaap	Profit Loss ProfitLoss	71176000	USD
CY2020Q4	us-gaap	Profit Loss ProfitLoss	231606000	USD
CY2020Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	767000	USD
CY2020Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	128000	USD
CY2020Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-327000	USD
CY2020Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-3385000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-40532000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	86482000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	71503000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	234991000	USD
CY2020Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-1.01
CY2020Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	2.21
CY2020Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	1.86
CY2020Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	6.10
CY2019Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	58816000	USD
CY2019Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	59825000	USD
CY2019Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	66457000	USD
CY2019Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	64252000	USD
CY2019Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	7000000	USD
CY2019Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	9000000	USD
CY2019Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	10000000	USD
CY2019Q4	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	13000000	USD
CY2019Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	51816000	USD
CY2019Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	50825000	USD
CY2019Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	56457000	USD
CY2019Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	51252000	USD
CY2019Q1	us-gaap	Other Income OtherIncome	9067000	USD
CY2019Q2	us-gaap	Other Income OtherIncome	14440000	USD
CY2019Q3	us-gaap	Other Income OtherIncome	13439000	USD
CY2019Q4	us-gaap	Other Income OtherIncome	10973000	USD
CY2019Q1	nni	Gains On Sale Of Student Loans And Debt Repurchases Net. GainsOnSaleOfStudentLoansAndDebtRepurchasesNet.	0	USD
CY2019Q2	nni	Gains On Sale Of Student Loans And Debt Repurchases Net. GainsOnSaleOfStudentLoansAndDebtRepurchasesNet.	1712000	USD
CY2019Q3	nni	Gains On Sale Of Student Loans And Debt Repurchases Net. GainsOnSaleOfStudentLoansAndDebtRepurchasesNet.	0	USD
CY2019Q4	nni	Gains On Sale Of Student Loans And Debt Repurchases Net. GainsOnSaleOfStudentLoansAndDebtRepurchasesNet.	15549000	USD
CY2019Q1	nni	Derivative Market Value And Foreign Currency Adjustments And Derivative Settlements Net DerivativeMarketValueAndForeignCurrencyAdjustmentsAndDerivativeSettlementsNet	-11539000	USD
CY2019Q2	nni	Derivative Market Value And Foreign Currency Adjustments And Derivative Settlements Net DerivativeMarketValueAndForeignCurrencyAdjustmentsAndDerivativeSettlementsNet	-24088000	USD
CY2019Q3	nni	Derivative Market Value And Foreign Currency Adjustments And Derivative Settlements Net DerivativeMarketValueAndForeignCurrencyAdjustmentsAndDerivativeSettlementsNet	1668000	USD
CY2019Q4	nni	Derivative Market Value And Foreign Currency Adjustments And Derivative Settlements Net DerivativeMarketValueAndForeignCurrencyAdjustmentsAndDerivativeSettlementsNet	3170000	USD
CY2019Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	111059000	USD
CY2019Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	111214000	USD
CY2019Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	116670000	USD
CY2019Q4	us-gaap	Labor And Related Expense LaborAndRelatedExpense	124561000	USD
CY2019Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	24213000	USD
CY2019Q2	us-gaap	Depreciation And Amortization DepreciationAndAmortization	24484000	USD
CY2019Q3	us-gaap	Depreciation And Amortization DepreciationAndAmortization	27701000	USD
CY2019Q4	us-gaap	Depreciation And Amortization DepreciationAndAmortization	28651000	USD
CY2019Q1	us-gaap	Other Expenses OtherExpenses	43816000	USD
CY2019Q2	us-gaap	Other Expenses OtherExpenses	45417000	USD
CY2019Q3	us-gaap	Other Expenses OtherExpenses	58329000	USD
CY2019Q4	us-gaap	Other Expenses OtherExpenses	46710000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11391000	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6209000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8829000	USD
CY2019Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9022000	USD
CY2019Q1	us-gaap	Profit Loss ProfitLoss	41647000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	24678000	USD
CY2019Q3	us-gaap	Profit Loss ProfitLoss	33135000	USD
CY2019Q4	us-gaap	Profit Loss ProfitLoss	41834000	USD
CY2019Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	56000	USD
CY2019Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	59000	USD
CY2019Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-77000	USD
CY2019Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-546000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	41591000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	24619000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	33212000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	42380000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	1.03
CY2019Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.61
CY2019Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.83
CY2019Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	1.06

Files In Submission

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$NNI
NELNET INC Stock $nni

2020 Q4 Form 10-K Financial Statement

#000125860221000027 Filed on February 25, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NNI NELNET INC Stock $nni

2020 Q4 Form 10-K Financial Statement

#000125860221000027 Filed on February 25, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NNI
NELNET INC Stock $nni