$NSP
INSPERITY, INC. Stock $nsp

$nsp Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-Q Financial Statement

#000100075320000051 Filed on November 02, 2020

Income Statement

Concept	2020 Q4	2020 Q3	2019 Q4
Revenue	$1.056B	$1.008B	$1.075B
YoY Change	-1.75%	-3.41%	11.21%
Cost Of Revenue	$888.8M	$822.8M	$913.2M
YoY Change	-2.67%	-5.73%	13.41%
Gross Profit	$167.6M	$185.0M	$161.9M
YoY Change	3.5%	8.49%	0.21%
Gross Profit Margin	15.87%	18.36%	15.06%
Selling, General & Admin	$152.0M	$148.4M	$126.4M
YoY Change	20.25%	15.49%	3.18%
% of Gross Profit	90.69%	80.2%	78.06%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$7.900M	$7.800M	$7.800M
YoY Change	1.28%	6.85%	20.0%
% of Gross Profit	4.71%	4.22%	4.82%
Operating Expenses	$159.8M	$156.3M	$134.2M
YoY Change	19.08%	15.06%	4.11%
Operating Profit	$7.800M	$28.77M	$27.72M
YoY Change	-71.86%	-17.16%	-15.02%
Interest Expense	-$1.500M	$1.731M	-$200.0K
YoY Change	650.0%	-18.43%	-114.29%
% of Operating Profit	-19.23%	6.02%	-0.72%
Other Income/Expense, Net
YoY Change
Pretax Income	$6.300M	$27.14M	$27.60M
YoY Change	-77.17%	-22.85%	-18.82%
Income Tax	$2.000M	$7.135M	$7.200M
% Of Pretax Income	31.75%	26.29%	26.09%
Net Earnings	$4.300M	$20.01M	$20.40M
YoY Change	-78.92%	-22.62%	-17.28%
Net Earnings / Revenue	0.41%	1.99%	1.9%
Basic Earnings Per Share		$0.52	$0.51
Diluted Earnings Per Share	$112.9K	$0.51	$0.51
COMMON SHARES
Basic Shares Outstanding	38.35M shares	38.51M shares	40.00M shares
Diluted Shares Outstanding		38.74M shares

Balance Sheet

Concept	2020 Q4	2020 Q3	2019 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$589.4M	$406.4M	$402.1M
YoY Change	46.58%	33.55%	3.74%
Cash & Equivalents	$554.8M	$372.4M	$367.3M
Short-Term Investments	$34.50M	$34.00M	$34.70M
Other Short-Term Assets	$39.46M	$33.77M	$43.49M
YoY Change	-9.27%	27.74%	56.9%
Inventory
Prepaid Expenses
Receivables	$6.559M	$528.7M	$12.73M
Other Receivables	$0.00	$0.00	$350.9M
Total Short-Term Assets	$1.077B	$1.049B	$974.7M
YoY Change	10.52%	17.36%	12.49%
LONG-TERM ASSETS
Property, Plant & Equipment	$216.3M	$196.2M	$147.7M
YoY Change	46.41%	45.39%	26.02%
Goodwill	$12.70M		$12.70M
YoY Change	0.0%		0.11%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$4.548M	$6.291M	$5.975M
YoY Change	-23.88%	-6.55%	23.17%
Total Long-Term Assets	$507.0M	$474.4M	$420.3M
YoY Change	20.64%	19.09%	29.2%
TOTAL ASSETS
Total Short-Term Assets	$1.077B	$1.049B	$974.7M
Total Long-Term Assets	$507.0M	$474.4M	$420.3M
Total Assets	$1.584B	$1.523B	$1.395B
YoY Change	13.57%	17.89%	17.05%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$6.203M	$6.016M	$4.565M
YoY Change	35.88%	11.97%	-57.02%
Accrued Expenses	$60.78M	$46.40M	$58.71M
YoY Change	3.52%	9.99%	103.23%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$904.9M	$841.1M	$869.0M
YoY Change	4.13%	10.49%	12.52%
LONG-TERM LIABILITIES
Long-Term Debt	$369.4M	$369.4M	$269.4M
YoY Change	37.12%	54.3%	86.57%
Other Long-Term Liabilities	$6.292M	$269.4M	$0.00
YoY Change			-100.0%
Total Long-Term Liabilities	$635.2M	$641.6M	$521.9M
YoY Change	21.72%	30.95%	52.68%
TOTAL LIABILITIES
Total Short-Term Liabilities	$904.9M	$841.1M	$869.0M
Total Long-Term Liabilities	$635.2M	$641.6M	$521.9M
Total Liabilities	$1.540B	$1.483B	$1.391B
YoY Change	10.73%	18.5%	24.84%
SHAREHOLDERS EQUITY
Retained Earnings	$575.0M	$586.1M	$499.5M
YoY Change	15.13%	19.39%	25.51%
Common Stock	$96.08M	$75.15M	$48.70M
YoY Change	97.31%	60.05%	30.53%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$627.0M	$620.6M	$544.1M
YoY Change	15.23%	24.9%	52.17%
Treasury Stock Shares	17.24M shares		16.12M shares
Shareholders Equity	$44.13M	$40.64M	$4.079M
YoY Change
Total Liabilities & Shareholders Equity	$1.584B	$1.523B	$1.395B
YoY Change	13.57%	17.89%	17.05%

Cashflow Statement

Concept	2020 Q4	2020 Q3	2019 Q4
OPERATING ACTIVITIES
Net Income	$4.300M	$20.01M	$20.40M
YoY Change	-78.92%	-22.62%	-17.28%
Depreciation, Depletion And Amortization	$7.900M	$7.800M	$7.800M
YoY Change	1.28%	6.85%	20.0%
Cash From Operating Activities	$239.8M	-$8.300M	$158.1M
YoY Change	51.68%	-67.19%	38.44%
INVESTING ACTIVITIES
Capital Expenditures	-$29.40M	-$29.30M	-$20.30M
YoY Change	44.83%	55.85%	47.1%
Acquisitions
YoY Change
Other Investing Activities	-$800.0K	-$2.400M	$26.20M
YoY Change	-103.05%	-700.0%	-213.91%
Cash From Investing Activities	-$30.20M	-$31.60M	$5.900M
YoY Change	-611.86%	71.74%	-116.03%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-22.20M	-43.30M	-30.20M
YoY Change	-26.49%	-18.91%	-53.32%
NET CHANGE
Cash From Operating Activities	239.8M	-8.300M	158.1M
Cash From Investing Activities	-30.20M	-31.60M	5.900M
Cash From Financing Activities	-22.20M	-43.30M	-30.20M
Net Change In Cash	187.4M	-83.20M	133.8M
YoY Change	40.06%	-14.32%	953.54%
FREE CASH FLOW
Cash From Operating Activities	$239.8M	-$8.300M	$158.1M
Capital Expenditures	-$29.40M	-$29.30M	-$20.30M
Free Cash Flow	$269.2M	$21.00M	$178.4M
YoY Change	50.9%	-423.08%	39.38%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Registrant Name EntityRegistrantName	INSPERITY, INC.
	dei	Entity Central Index Key EntityCentralIndexKey	0001000753
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Amendment Flag AmendmentFlag	false
CY2020Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	38354147	shares
	nsp	Time Period Incurred Claims Expected To Be Paid Included In Deposits TimePeriodIncurredClaimsExpectedToBePaidIncludedInDeposits	Greater than 1 year
	nsp	Time Period Estimate Of Incurred Claim Costs To Be Paid Included In Long Term Liabilities TimePeriodEstimateOfIncurredClaimCostsToBePaidIncludedInLongTermLiabilities	Greater than 1 year
	nsp	Class Of Warrant Right Conversion Ratio Of Warrantor Rights To Share Of Stock ClassOfWarrantRightConversionRatioOfWarrantorRightsToShareOfStock	0.010	conversionRatio
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2020-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	1-13998
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	76-0479645
	dei	Entity Address Address Line1 EntityAddressAddressLine1	19001 Crescent Springs Drive
	dei	Entity Address City Or Town EntityAddressCityOrTown	Kingwood,
	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	77339
	dei	City Area Code CityAreaCode	281
	dei	Local Phone Number LocalPhoneNumber	358-8986
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Shell Company EntityShellCompany	false
CY2020Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	38354147	shares
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	372356000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	367342000	USD
CY2020Q3	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	45265000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	49295000	USD
CY2020Q3	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	33994000	USD
CY2019Q4	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	34728000	USD
CY2020Q3	us-gaap	Receivables Net Current ReceivablesNetCurrent	528712000	USD
CY2019Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	465779000	USD
CY2020Q3	us-gaap	Prepaid Insurance PrepaidInsurance	34759000	USD
CY2019Q4	us-gaap	Prepaid Insurance PrepaidInsurance	10418000	USD
CY2020Q3	us-gaap	Other Assets Current OtherAssetsCurrent	33772000	USD
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	43493000	USD
CY2020Q3	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	0	USD
CY2019Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	3691000	USD
CY2020Q3	us-gaap	Assets Current AssetsCurrent	1048858000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	974746000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	196210000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	147706000	USD
CY2020Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	60682000	USD
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CY2020Q3	nsp	Prepaid Health Insurance Noncurrent PrepaidHealthInsuranceNoncurrent	9000000	USD
CY2019Q4	nsp	Prepaid Health Insurance Noncurrent PrepaidHealthInsuranceNoncurrent	9000000	USD
CY2020Q3	nsp	Deposits Health Insurance DepositsHealthInsurance	7900000	USD
CY2019Q4	nsp	Deposits Health Insurance DepositsHealthInsurance	8100000	USD
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CY2020Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	0	USD
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CY2020Q3	nsp	Accrued Health Insurance Costs AccruedHealthInsuranceCosts	44639000	USD
CY2019Q4	nsp	Accrued Health Insurance Costs AccruedHealthInsuranceCosts	21180000	USD
CY2020Q3	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	47956000	USD
CY2019Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	52868000	USD
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CY2020Q3	us-gaap	Workers Compensation Liability Noncurrent WorkersCompensationLiabilityNoncurrent	196247000	USD
CY2019Q4	us-gaap	Workers Compensation Liability Noncurrent WorkersCompensationLiabilityNoncurrent	193609000	USD
CY2020Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	369400000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	269400000	USD
CY2020Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	64436000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	58863000	USD
CY2020Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	2801000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	0	USD
CY2020Q3	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	8689000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	0	USD
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CY2020Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
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CY2019Q4	us-gaap	Common Stock Value CommonStockValue	555000	USD
CY2020Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	74598000	USD
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CY2020Q3	us-gaap	Treasury Stock Value TreasuryStockValue	620638000	USD
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	544102000	USD
CY2020Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	586124000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	499485000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	40639000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	4079000	USD
CY2020Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1523282000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1394996000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1007820000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1043388000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3230669000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3239714000	USD
CY2020Q3	nsp	Payroll Taxes Benefits And Workers Compensation Costs PayrollTaxesBenefitsAndWorkersCompensationCosts	822787000	USD
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	nsp	Payroll Taxes Benefits And Workers Compensation Costs PayrollTaxesBenefitsAndWorkersCompensationCosts	2591365000	USD
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CY2019Q3	us-gaap	Gross Profit GrossProfit	170546000	USD
	us-gaap	Gross Profit GrossProfit	639304000	USD
	us-gaap	Gross Profit GrossProfit	570998000	USD
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	nsp	Salaries Wages And Payroll Taxes SalariesWagesAndPayrollTaxes	266640000	USD
	nsp	Salaries Wages And Payroll Taxes SalariesWagesAndPayrollTaxes	237340000	USD
CY2020Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	20864000	USD
CY2019Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	6517000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	38110000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	20813000	USD
CY2020Q3	us-gaap	Sales Commissions And Fees SalesCommissionsAndFees	7722000	USD
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	us-gaap	Sales Commissions And Fees SalesCommissionsAndFees	23657000	USD
	us-gaap	Sales Commissions And Fees SalesCommissionsAndFees	22727000	USD
CY2020Q3	us-gaap	Advertising Expense AdvertisingExpense	4781000	USD
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	us-gaap	Advertising Expense AdvertisingExpense	15334000	USD
	us-gaap	Advertising Expense AdvertisingExpense	17474000	USD
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	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	85254000	USD
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	us-gaap	Depreciation And Amortization DepreciationAndAmortization	23329000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	20929000	USD
CY2020Q3	us-gaap	Operating Expenses OperatingExpenses	156261000	USD
CY2019Q3	us-gaap	Operating Expenses OperatingExpenses	135813000	USD
	us-gaap	Operating Expenses OperatingExpenses	452324000	USD
	us-gaap	Operating Expenses OperatingExpenses	412084000	USD
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	28772000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	34733000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	186980000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	158914000	USD
CY2020Q3	us-gaap	Interest Income Other InterestIncomeOther	103000	USD
CY2019Q3	us-gaap	Interest Income Other InterestIncomeOther	2574000	USD
	us-gaap	Interest Income Other InterestIncomeOther	2351000	USD
	us-gaap	Interest Income Other InterestIncomeOther	8621000	USD
CY2020Q3	us-gaap	Interest Expense InterestExpense	1731000	USD
CY2019Q3	us-gaap	Interest Expense InterestExpense	2122000	USD
	us-gaap	Interest Expense InterestExpense	6312000	USD
	us-gaap	Interest Expense InterestExpense	5442000	USD
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	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	183019000	USD
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CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7135000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9326000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	49067000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	31389000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	20009000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	25859000	USD
	us-gaap	Net Income Loss NetIncomeLoss	133952000	USD
	us-gaap	Net Income Loss NetIncomeLoss	130704000	USD
CY2020Q3	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	104000	USD
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	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	1546000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	19905000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	25575000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	133160000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	129158000	USD
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.52
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.64
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.45
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.19
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.51
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.63
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.43
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.18
CY2020Q3	nsp	Gross Billings GrossBillings	6563727000	USD
CY2019Q3	nsp	Gross Billings GrossBillings	6555865000	USD
	nsp	Gross Billings GrossBillings	20356164000	USD
	nsp	Gross Billings GrossBillings	19804549000	USD
CY2020Q3	nsp	Worksite Employee Payroll Cost WorksiteEmployeePayrollCost	5555907000	USD
CY2019Q3	nsp	Worksite Employee Payroll Cost WorksiteEmployeePayrollCost	5512477000	USD
	nsp	Worksite Employee Payroll Cost WorksiteEmployeePayrollCost	17125495000	USD
	nsp	Worksite Employee Payroll Cost WorksiteEmployeePayrollCost	16564835000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1007820000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1043388000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3230669000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3239714000	USD
	us-gaap	Net Income Loss NetIncomeLoss	133952000	USD
	us-gaap	Net Income Loss NetIncomeLoss	130704000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	23329000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	20929000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	38110000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	20813000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	6757000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	8659000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	62933000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	83267000	USD
	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	24341000	USD
	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	13750000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-9721000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-1283000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-10862000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	2709000	USD
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	1451000	USD
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-5249000	USD
	us-gaap	Increase Decrease In Other Employee Related Liabilities IncreaseDecreaseInOtherEmployeeRelatedLiabilities	-99196000	USD
	us-gaap	Increase Decrease In Other Employee Related Liabilities IncreaseDecreaseInOtherEmployeeRelatedLiabilities	-80549000	USD
	nsp	Increase Decreasein Wse Epayrollexpense IncreaseDecreaseinWSEEpayrollexpense	69937000	USD
	nsp	Increase Decreasein Wse Epayrollexpense IncreaseDecreaseinWSEEpayrollexpense	81478000	USD
	us-gaap	Increase Decrease In Health Care Insurance Liabilities IncreaseDecreaseInHealthCareInsuranceLiabilities	23459000	USD
	us-gaap	Increase Decrease In Health Care Insurance Liabilities IncreaseDecreaseInHealthCareInsuranceLiabilities	-1914000	USD
	us-gaap	Increase Decrease In Workers Compensation Liabilities IncreaseDecreaseInWorkersCompensationLiabilities	-2273000	USD
	us-gaap	Increase Decrease In Workers Compensation Liabilities IncreaseDecreaseInWorkersCompensationLiabilities	6087000	USD
	us-gaap	Increase Decrease In Accrued Salaries IncreaseDecreaseInAccruedSalaries	-32238000	USD
	us-gaap	Increase Decrease In Accrued Salaries IncreaseDecreaseInAccruedSalaries	-22830000	USD
	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	9977000	USD
	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	-12609000	USD
	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	-27378000	USD
	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	-83628000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	106574000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	47076000	USD
	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	42007000	USD
	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	90909000	USD
	nsp	Marketable Securities Proceeds From Dispositions MarketableSecuritiesProceedsFromDispositions	484000	USD
	nsp	Marketable Securities Proceeds From Dispositions MarketableSecuritiesProceedsFromDispositions	5799000	USD
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	41860000	USD
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	85480000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	68770000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	35968000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-68433000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-35598000	USD
	nsp	Treasury Stock Acquired TreasuryStockAcquired	91216000	USD
	nsp	Treasury Stock Acquired TreasuryStockAcquired	153668000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	46522000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	36777000	USD
	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	100000000	USD
	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	95000000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	6302000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	7215000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-31436000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-88230000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	6705000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-76752000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	592550000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	535474000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	599255000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	458722000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	367342000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	326773000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	49295000	USD
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	42227000	USD
CY2019Q4	nsp	Deposits Workers Compensation DepositsWorkersCompensation	175913000	USD
CY2018Q4	nsp	Deposits Workers Compensation DepositsWorkersCompensation	166474000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	592550000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	535474000	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	372356000	USD
CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	243439000	USD
CY2020Q3	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	45265000	USD
CY2019Q3	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	45251000	USD
CY2020Q3	nsp	Deposits Workers Compensation DepositsWorkersCompensation	181634000	USD
CY2019Q3	nsp	Deposits Workers Compensation DepositsWorkersCompensation	170032000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	599255000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	458722000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	18364000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	21980000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	4079000	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	-91216000	USD
	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	38110000	USD
	us-gaap	Stockholders Equity Other StockholdersEquityOther	-2217000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	-46522000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	19000	USD
	us-gaap	Net Income Loss NetIncomeLoss	133952000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	40639000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	77676000	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	-153668000	USD
	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	20813000	USD
	us-gaap	Stockholders Equity Other StockholdersEquityOther	-2205000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	-36777000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	35000	USD
	us-gaap	Net Income Loss NetIncomeLoss	130704000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	40988000	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	44638000	USD
CY2020Q3	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	-29986000	USD
CY2020Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	20864000	USD
CY2020Q3	us-gaap	Stockholders Equity Other StockholdersEquityOther	-612000	USD
CY2020Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	-15448000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-50000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	20009000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	40639000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	134889000	USD
CY2019Q3	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	-114872000	USD
CY2019Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6517000	USD
CY2019Q3	us-gaap	Stockholders Equity Other StockholdersEquityOther	-660000	USD
CY2019Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	-12037000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-28000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	25859000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	40988000	USD
CY2020Q3	nsp	Percentageofourhealthinsurancecoverageprovidedby United PercentageofourhealthinsurancecoverageprovidedbyUnited	0.87
	nsp	Number Of Days In Advance Of Beginning Of Reporting Quarter Carrier Establishes Cash Funding Rates NumberOfDaysInAdvanceOfBeginningOfReportingQuarterCarrierEstablishesCashFundingRates	P90D
CY2020Q3	nsp	Prepaid Health Insurance Noncurrent PrepaidHealthInsuranceNoncurrent	9000000.0	USD
CY2020Q3	nsp	Required Deposit For Health Care Costs RequiredDepositForHealthCareCosts	6500000	USD
CY2019Q4	nsp	Workers Compensation Maximum Economic Burden First Layer Of Claims Per Occurrence WorkersCompensationMaximumEconomicBurdenFirstLayerOfClaimsPerOccurrence	1500000	USD
CY2019Q4	nsp	Workers Compensation Maximum Economic Burden First Layer Of Claims Per Occurrence WorkersCompensationMaximumEconomicBurdenFirstLayerOfClaimsPerOccurrence	1500000	USD
CY2019Q4	nsp	Workers Compensation Maximum Aggregate Economic Burden For Claims In Excess Of First Layer Cap Per Policy Year WorkersCompensationMaximumAggregateEconomicBurdenForClaimsInExcessOfFirstLayerCapPerPolicyYear	6000000	USD
CY2019Q4	nsp	Workers Compensation Maximum Economic Burden First Layer Of Claims Per Occurrence WorkersCompensationMaximumEconomicBurdenFirstLayerOfClaimsPerOccurrence	1500000	USD
	nsp	Decrease Increase In Accrued Workers Compensation Costs For Changes In Estimated Losses DecreaseIncreaseInAccruedWorkersCompensationCostsForChangesInEstimatedLosses	-32400000	USD
	nsp	Decrease Increase In Accrued Workers Compensation Costs For Changes In Estimated Losses DecreaseIncreaseInAccruedWorkersCompensationCostsForChangesInEstimatedLosses	-26000000.0	USD
CY2020Q3	nsp	Prepaid Health Insurance Current And Noncurrent PrepaidHealthInsuranceCurrentAndNoncurrent	32800000	USD
CY2020Q3	nsp	Prepaid Health Insurance Noncurrent PrepaidHealthInsuranceNoncurrent	9000000.0	USD
CY2020Q3	nsp	Prepaid Health Insurance Current PrepaidHealthInsuranceCurrent	23800000	USD
CY2020Q3	nsp	Premiums Owed To United PremiumsOwedToUnited	38300000	USD
CY2020Q3	nsp	Benefits Costs Incurred Reduced Relatedto Runoff BenefitsCostsIncurredReducedRelatedtoRunoff	1900000	USD
CY2019Q3	nsp	Benefits Costs Incurred Reduced Relatedto Runoff BenefitsCostsIncurredReducedRelatedtoRunoff	-2900000	USD
CY2020Q3	nsp	Workers Compensation Maximum Economic Burden First Layer Of Claims Per Occurrence WorkersCompensationMaximumEconomicBurdenFirstLayerOfClaimsPerOccurrence	1000000	USD
CY2020Q3	nsp	Workers Compensation Maximum Economic Burden First Layer Of Claims Per Occurrence WorkersCompensationMaximumEconomicBurdenFirstLayerOfClaimsPerOccurrence	1000000	USD
CY2020Q3	nsp	Workers Compensation Maximum Aggregate Economic Burden For Claims In Excess Of First Layer Cap Per Policy Year WorkersCompensationMaximumAggregateEconomicBurdenForClaimsInExcessOfFirstLayerCapPerPolicyYear	6000000	USD
CY2020Q3	nsp	Workers Compensation Maximum Economic Burden First Layer Of Claims Per Occurrence WorkersCompensationMaximumEconomicBurdenFirstLayerOfClaimsPerOccurrence	1000000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3230669000	USD
CY2019Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Opening Balance Adjustments LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseOpeningBalanceAdjustments	242904000	USD
CY2018Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Opening Balance Adjustments LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseOpeningBalanceAdjustments	229639000	USD
	nsp	Workers Compensation Expense WorkersCompensationExpense	33397000	USD
	nsp	Workers Compensation Expense WorkersCompensationExpense	44334000	USD
	nsp	Workers Compensation Discount Changed During Period WorkersCompensationDiscountChangedDuringPeriod	-500000	USD
	nsp	Workers Compensation Discount Changed During Period WorkersCompensationDiscountChangedDuringPeriod	-3664000	USD
	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	-34289000	USD
	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	-34669000	USD
CY2020Q3	us-gaap	Workers Compensation Liability Current And Noncurrent WorkersCompensationLiabilityCurrentAndNoncurrent	241512000	USD
CY2019Q3	us-gaap	Workers Compensation Liability Current And Noncurrent WorkersCompensationLiabilityCurrentAndNoncurrent	235640000	USD
CY2020Q3	nsp	Workers Compensation Liability Net Of Admin Fees Current WorkersCompensationLiabilityNetOfAdminFeesCurrent	45265000	USD
CY2019Q3	nsp	Workers Compensation Liability Net Of Admin Fees Current WorkersCompensationLiabilityNetOfAdminFeesCurrent	45250000	USD
CY2020Q3	us-gaap	Workers Compensation Liability Noncurrent WorkersCompensationLiabilityNoncurrent	196247000	USD
CY2019Q3	us-gaap	Workers Compensation Liability Noncurrent WorkersCompensationLiabilityNoncurrent	190390000	USD
CY2020Q3	us-gaap	Workers Compensation Liability Current And Noncurrent WorkersCompensationLiabilityCurrentAndNoncurrent	241512000	USD
CY2019Q3	us-gaap	Workers Compensation Liability Current And Noncurrent WorkersCompensationLiabilityCurrentAndNoncurrent	235640000	USD
CY2020Q3	nsp	Workers Compensation Administrative Fees Accrued WorkersCompensationAdministrativeFeesAccrued	2700000	USD
	nsp	Undiscounted Accrued Workers Compensation Costs UndiscountedAccruedWorkersCompensationCosts	259400000	USD
	nsp	Undiscounted Accrued Workers Compensation Costs UndiscountedAccruedWorkersCompensationCosts	255300000	USD
	nsp	Time Period Incurred Claims Expected To Be Paid Recorded As Restricted TimePeriodIncurredClaimsExpectedToBePaidRecordedAsRestricted	P1Y
	nsp	Returnof Excess Claim Funds ReturnofExcessClaimFunds	24800000	USD
	nsp	Returnof Excess Claim Funds ReturnofExcessClaimFunds	16700000	USD
CY2020Q3	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	45300000	USD
CY2020Q3	nsp	Deposits Workers Compensation DepositsWorkersCompensation	181600000	USD
	nsp	Time Period Estimate Of Incurred Claim Costs To Be Paid Included In Short Term Liabilities TimePeriodEstimateOfIncurredClaimCostsToBePaidIncludedInShortTermLiabilities	P1Y
CY2020Q3	nsp	Unbilled Unbilled	520900000	USD
CY2019Q4	nsp	Unbilled Unbilled	448100000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1007820000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1043388000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3239714000	USD
CY2019Q4	us-gaap	Short Term Investments ShortTermInvestments	47946000	USD
	us-gaap	New Accounting Pronouncement Or Change In Accounting Principle Description NewAccountingPronouncementOrChangeInAccountingPrincipleDescription	Recently Adopted Accounting StandardsWe adopted ASU 2016-13, Financial Instruments - Credit Losses (Topic 326) effective January 1, 2020 with no material impact. Under this standard, we estimate our reserves using information about past events, current conditions and risk characteristics of our customer when assessing risk associated with the collectability of accounts receivables, including unbilled accounts receivables. We require clients to pay invoices for service fees not later than the same day as the applicable payroll date. As such, we generally do not require collateral. As of September 30, 2020, allowance for bad debts was immaterial.
CY2020Q3	nsp	Money Market Funds Overnight Holdings At Carrying Value MoneyMarketFundsOvernightHoldingsAtCarryingValue	314952000	USD
CY2019Q4	nsp	Money Market Funds Overnight Holdings At Carrying Value MoneyMarketFundsOvernightHoldingsAtCarryingValue	349857000	USD
CY2020Q3	us-gaap	Short Term Investments ShortTermInvestments	72861000	USD
CY2020Q3	us-gaap	Cash Cash	28259000	USD
CY2019Q4	us-gaap	Cash Cash	36521000	USD
CY2020Q3	srt	Drafts Payable DraftsPayable	9722000	USD
CY2019Q4	srt	Drafts Payable DraftsPayable	32254000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	406350000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	402070000	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	353819000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	363075000	USD
CY2020Q3	us-gaap	Us Government Securities At Carrying Value USGovernmentSecuritiesAtCarryingValue	10411000	USD
CY2020Q3	nsp	Payroll Withholdings Included In Cash Balance PayrollWithholdingsIncludedInCashBalance	147100000	USD
CY2019Q4	nsp	Payroll Withholdings Included In Cash Balance PayrollWithholdingsIncludedInCashBalance	234600000	USD
CY2020Q3	nsp	Client Prepayments Included In Cash Balance ClientPrepaymentsIncludedInCashBalance	-46500000	USD
CY2019Q4	nsp	Client Prepayments Included In Cash Balance ClientPrepaymentsIncludedInCashBalance	-59600000	USD
CY2019Q4	us-gaap	Us Government Securities At Carrying Value USGovernmentSecuritiesAtCarryingValue	34728000	USD
CY2020Q3	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	23583000	USD
CY2019Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	0	USD
CY2020Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	387813000	USD
CY2019Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	397803000	USD
CY2020Q3	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	33964000	USD
	us-gaap	Available For Sale Securities Gross Unrealized Gains AvailableForSaleSecuritiesGrossUnrealizedGains	30000	USD
	us-gaap	Available For Sale Securities Gross Unrealized Loss AvailableForSaleSecuritiesGrossUnrealizedLoss	0	USD
CY2020Q3	us-gaap	Available For Sale Securities AvailableForSaleSecurities	33994000	USD
CY2019Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	34716000	USD
CY2020Q1	us-gaap	Available For Sale Securities Gross Unrealized Gains AvailableForSaleSecuritiesGrossUnrealizedGains	13000	USD
CY2020Q1	us-gaap	Available For Sale Securities Gross Unrealized Loss AvailableForSaleSecuritiesGrossUnrealizedLoss	1000	USD
CY2019Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	34728000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	33964000	USD
CY2020Q3	nsp	Applicable Margin30 Day Libor ApplicableMargin30DayLibor	0.0200
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	33994000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	0	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	0	USD
CY2020Q3	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	500000000	USD
CY2020Q3	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	550000000	USD
	nsp	Percentage Of Subsidiary Stock Securing Debt PercentageOfSubsidiaryStockSecuringDebt	0.65
CY2020Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	369400000	USD
CY2020Q3	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	1000000.0	USD
CY2020Q3	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	129600000	USD
CY2020Q3	nsp	Applicable Margin Federal Funds Rate ApplicableMarginFederalFundsRate	0.0050
	us-gaap	Line Of Credit Facility Unused Capacity Commitment Fee Percentage LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage	0.0025
	us-gaap	Line Of Credit Facility Interest Rate During Period LineOfCreditFacilityInterestRateDuringPeriod	0.0252
	nsp	Aggregatenumberofsharesrepurchasedduringtheperiod Aggregatenumberofsharesrepurchasedduringtheperiod	1336884	shares
	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1186000	shares
CY2020Q3	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	227833	shares
	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	150884	shares
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.40
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.30
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.40
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.30
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.40
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.30
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	46500000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	36800000	USD
	us-gaap	Class Of Warrant Or Right Reason For Issuing To Nonemployees ClassOfWarrantOrRightReasonForIssuingToNonemployees	Rights PlanOn May 21, 2020, the Board declared a dividend of one right (“Right”) for each outstanding share of common stock to common stockholders of record at the close of business on June 1, 2020 (the “Rights Plan”). Each Right, if and when it becomes exercisable, entitles the registered holder to purchase from us one unit consisting of one one-hundredth of a share of Series A Junior Participating Preferred Stock, par value $0.01 per share. Initially, the Rights are attached to all outstanding shares of our common stock. The Rights are not currently exercisable and the Rights Plan will expire at the close of business on May 20, 2021, unless the Rights are earlier redeemed or exchanged by us.
CY2020Q3	us-gaap	Class Of Warrant Or Right Number Of Securities Called By Each Warrant Or Right ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight	1	shares
CY2020Q3	us-gaap	Warrants And Rights Outstanding Maturity Date WarrantsAndRightsOutstandingMaturityDate	2021-05-20
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	20009000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	25859000	USD
	us-gaap	Net Income Loss NetIncomeLoss	133952000	USD
	us-gaap	Net Income Loss NetIncomeLoss	130704000	USD
CY2020Q3	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	104000	USD
CY2019Q3	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	284000	USD
	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	792000	USD
	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	1546000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	19905000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	25575000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	133160000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	129158000	USD
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	38507000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	40168000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	38625000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	40481000	shares
CY2020Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	234000	shares
CY2019Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	149000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	193000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	143000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	38741000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	40317000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	38818000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	40624000	shares
	us-gaap	Loss Contingency Damages Sought Value LossContingencyDamagesSoughtValue	146000000	USD
	us-gaap	Loss Contingency Accrual Provision LossContingencyAccrualProvision	0	USD

Files In Submission

Name	View Source	Status
0001000753-20-000051-index-headers.html	Edgar Link	pending
0001000753-20-000051-index.html	Edgar Link	pending
0001000753-20-000051.txt	Edgar Link	pending
0001000753-20-000051-xbrl.zip	Edgar Link	pending
a09302020-nspex311.htm	Edgar Link	pending
a09302020-nspex312.htm	Edgar Link	pending
a09302020-nspex321.htm	Edgar Link	pending
a09302020-nspex322.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
nsp-20200930.htm	Edgar Link	pending
nsp-20200930.xsd	Edgar Link	pending
nsp-20200930_cal.xml	Edgar Link	unprocessable
nsp-20200930_def.xml	Edgar Link	unprocessable
nsp-20200930_g1.jpg	Edgar Link	pending
nsp-20200930_g10.jpg	Edgar Link	pending
nsp-20200930_g11.jpg	Edgar Link	pending
nsp-20200930_g2.jpg	Edgar Link	pending
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nsp-20200930_g5.jpg	Edgar Link	pending
nsp-20200930_g6.jpg	Edgar Link	pending
nsp-20200930_g7.jpg	Edgar Link	pending
nsp-20200930_g8.jpg	Edgar Link	pending
nsp-20200930_g9.jpg	Edgar Link	pending
nsp-20200930_htm.xml	Edgar Link	completed
nsp-20200930_lab.xml	Edgar Link	unprocessable
nsp-20200930_pre.xml	Edgar Link	unprocessable
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
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R2.htm	Edgar Link	pending
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R7.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$NSP
INSPERITY, INC. Stock $nsp

2020 Q4 Form 10-Q Financial Statement

#000100075320000051 Filed on November 02, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NSP INSPERITY, INC. Stock $nsp

2020 Q4 Form 10-Q Financial Statement

#000100075320000051 Filed on November 02, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NSP
INSPERITY, INC. Stock $nsp