$NSP
INSPERITY, INC. Stock $nsp

$nsp Overview Financials Valuation SEC Filings Company Website

2023 Q1 Form 10-K Financial Statement

#000100075323000012 Filed on February 10, 2023

Income Statement

Concept	2023 Q1	2022 Q4	2022
Revenue	$1.770B	$1.490B	$5.939B
YoY Change	12.16%	15.37%	19.42%
Cost Of Revenue	$1.438B	$1.249B	$4.928B
YoY Change	11.26%	11.43%	18.65%
Gross Profit	$332.1M	$241.0M	$1.011B
YoY Change	16.23%	41.27%	23.31%
Gross Profit Margin	18.77%	16.18%	17.03%
Selling, General & Admin	$200.6M	$179.9M	$720.3M
YoY Change	13.23%	23.96%	18.43%
% of Gross Profit	60.41%	74.63%	71.23%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$10.50M	$10.29M	$40.66M
YoY Change	3.07%	-4.98%	5.48%
% of Gross Profit	3.16%	4.27%	4.02%
Operating Expenses	$211.1M	$190.2M	$761.0M
YoY Change	12.68%	21.95%	17.66%
Operating Profit	$121.0M	$50.86M	$250.2M
YoY Change	22.98%	246.5%	44.37%
Interest Expense	$6.205M	-$17.00K	$14.21M
YoY Change	222.34%	-99.0%	90.49%
% of Operating Profit	5.13%	-0.03%	5.68%
Other Income/Expense, Net
YoY Change
Pretax Income	$123.6M	$50.85M	$245.4M
YoY Change	27.9%	291.88%	45.81%
Income Tax	$28.98M	$12.65M	$66.08M
% Of Pretax Income	23.45%	24.88%	26.92%
Net Earnings	$94.60M	$38.23M	$179.4M
YoY Change	35.36%	293.75%	44.54%
Net Earnings / Revenue	5.35%	2.57%	3.02%
Basic Earnings Per Share	$2.49		$4.70
Diluted Earnings Per Share	$2.45	$0.99	$4.64
COMMON SHARES
Basic Shares Outstanding	37.85M shares	37.93M shares	38.12M shares
Diluted Shares Outstanding	38.67M shares		38.62M shares

Balance Sheet

Concept	2023 Q1	2022 Q4	2022
SHORT-TERM ASSETS
Cash & Short-Term Investments	$732.1M	$765.9M	$765.9M
YoY Change	20.17%	26.05%	26.05%
Cash & Equivalents	$696.6M	$732.8M	$732.8M
Short-Term Investments	$35.54M	$33.07M	$33.07M
Other Short-Term Assets	$79.86M	$61.73M	$123.2M
YoY Change	-0.53%	15.79%	10.48%
Inventory
Prepaid Expenses
Receivables	$607.3M	$13.93M	$614.4M
Other Receivables	$0.00	$8.384M	$8.384M
Total Short-Term Assets	$1.518B	$1.512B	$1.512B
YoY Change	6.02%	21.45%	21.45%
LONG-TERM ASSETS
Property, Plant & Equipment	$196.4M	$200.0M	$256.5M
YoY Change	-4.23%	-5.09%	-6.23%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$31.38M	$29.35M	$258.2M
YoY Change	48.68%	93.65%	16.3%
Total Long-Term Assets	$521.9M	$527.4M	$527.4M
YoY Change	2.7%	3.77%	3.77%
TOTAL ASSETS
Total Short-Term Assets	$1.518B	$1.512B	$1.512B
Total Long-Term Assets	$521.9M	$527.4M	$527.4M
Total Assets	$2.040B	$2.039B	$2.039B
YoY Change	5.15%	16.32%	16.32%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$9.491M	$7.732M	$7.732M
YoY Change	21.28%	20.59%	20.59%
Accrued Expenses	$79.79M	$80.12M	$1.346B
YoY Change	-7.89%	15.61%	19.91%
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	$1.303B	$1.353B	$1.353B
YoY Change	1.27%	19.92%	19.92%
LONG-TERM LIABILITIES
Long-Term Debt	$369.4M	$369.4M	$369.4M
YoY Change	0.0%	0.0%	0.0%
Other Long-Term Liabilities	$233.0M	$235.2M	$235.2M
YoY Change	-4.91%		-8.44%
Total Long-Term Liabilities	$603.6M	$604.6M	$604.6M
YoY Change	-2.57%	-3.46%	-3.46%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.303B	$1.353B	$1.353B
Total Long-Term Liabilities	$603.6M	$604.6M	$604.6M
Total Liabilities	$1.907B	$1.958B	$1.958B
YoY Change	0.02%	11.58%	11.58%
SHAREHOLDERS EQUITY
Retained Earnings	$726.1M	$655.2M
YoY Change	20.02%	18.35%
Common Stock	$142.6M	$151.7M
YoY Change	28.88%	38.24%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$735.2M	$725.5M
YoY Change	7.86%	9.09%
Treasury Stock Shares		17.61M shares
Shareholders Equity	$133.4M	$81.28M	$81.28M
YoY Change
Total Liabilities & Shareholders Equity	$2.040B	$2.039B	$2.039B
YoY Change	5.15%	16.32%	16.32%

Cashflow Statement

Concept	2023 Q1	2022 Q4	2022
OPERATING ACTIVITIES
Net Income	$94.60M	$38.23M	$179.4M
YoY Change	35.36%	293.75%	44.54%
Depreciation, Depletion And Amortization	$10.50M	$10.29M	$40.66M
YoY Change	3.07%	-4.98%	5.48%
Cash From Operating Activities	$39.35M	$225.7M	$347.7M
YoY Change	-33.13%	9.91%	33.65%
INVESTING ACTIVITIES
Capital Expenditures	$6.849M	$13.88M	$30.33M
YoY Change	46.16%	-249.19%	-7.83%
Acquisitions
YoY Change
Other Investing Activities	-$2.096M	$1.610M	-$1.793M
YoY Change	74.09%	127.72%	-194.67%
Cash From Investing Activities	-$8.945M	-$12.27M	-$32.12M
YoY Change	51.87%	42.74%	3.58%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$46.85M	-17.73M	-$141.2M
YoY Change	6.75%	-84.29%	-32.16%
NET CHANGE
Cash From Operating Activities	$39.35M	225.7M	$347.7M
Cash From Investing Activities	-$8.945M	-12.27M	-$32.12M
Cash From Financing Activities	-$46.85M	-17.73M	-$141.2M
Net Change In Cash	-$16.44M	195.7M	$174.4M
YoY Change	-281.24%	133.49%	727.85%
FREE CASH FLOW
Cash From Operating Activities	$39.35M	$225.7M	$347.7M
Capital Expenditures	$6.849M	$13.88M	$30.33M
Free Cash Flow	$32.50M	$211.8M	$317.4M
YoY Change	-39.99%	-1.32%	39.65%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2022	dei	Entity Central Index Key EntityCentralIndexKey	0001000753
CY2022	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2022	dei	Document Period End Date DocumentPeriodEndDate	2022-12-31
CY2022	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
CY2022	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2022	dei	Amendment Flag AmendmentFlag	false
CY2023Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	37851697	shares
CY2022Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#OtherLiabilitiesCurrent
CY2022	dei	Document Type DocumentType	10-K
CY2022	dei	Document Annual Report DocumentAnnualReport	true
CY2022	dei	Document Period End Date DocumentPeriodEndDate	2022-12-31
CY2022	dei	Document Transition Report DocumentTransitionReport	false
CY2022	dei	Entity File Number EntityFileNumber	1-13998
CY2022	dei	Entity Registrant Name EntityRegistrantName	Insperity, Inc.
CY2022	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2022	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	76-0479645
CY2022	dei	Entity Address Address Line1 EntityAddressAddressLine1	19001 Crescent Springs Drive
CY2022	dei	Entity Address City Or Town EntityAddressCityOrTown	Kingwood,
CY2022	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
CY2022	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	77339
CY2022	dei	City Area Code CityAreaCode	281
CY2022	dei	Local Phone Number LocalPhoneNumber	358-8986
CY2022	dei	Security12b Title Security12bTitle	Common Stock, Par value $0.01 per share
CY2022	dei	Trading Symbol TradingSymbol	NSP
CY2022	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2022	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2022	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2022	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2022	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2022	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2022	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2022	dei	Entity Small Business EntitySmallBusiness	false
CY2022	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2022	dei	Entity Shell Company EntityShellCompany	false
CY2023Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	37851697	shares
CY2022Q4	us-gaap	Other Assets Current OtherAssetsCurrent	61728000	usd
CY2021Q4	us-gaap	Other Assets Current OtherAssetsCurrent	53312000	usd
CY2022Q2	dei	Entity Public Float EntityPublicFloat	3600000000	usd
CY2022	dei	Auditor Firm AuditorFirmId	42
CY2022	dei	Auditor Name AuditorName	Ernst & Young LLP
CY2022	dei	Auditor Location AuditorLocation	Houston, Texas
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	732828000	usd
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	575812000	usd
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	49779000	usd
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	46929000	usd
CY2022Q4	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	33068000	usd
CY2021Q4	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	31791000	usd
CY2022Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	622764000	usd
CY2021Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	513306000	usd
CY2022Q4	us-gaap	Prepaid Insurance PrepaidInsurance	11706000	usd
CY2021Q4	us-gaap	Prepaid Insurance PrepaidInsurance	11285000	usd
CY2022Q4	us-gaap	Nontrade Receivables NontradeReceivables	0	usd
CY2021Q4	us-gaap	Nontrade Receivables NontradeReceivables	12413000	usd
CY2022Q4	us-gaap	Assets Current AssetsCurrent	1511873000	usd
CY2021Q4	us-gaap	Assets Current AssetsCurrent	1244848000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	199992000	usd
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	210723000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	56532000	usd
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	62830000	usd
CY2022Q4	nsp	Depositsandprepaidhealthinsurance Depositsandprepaidhealthinsurance	213270000	usd
CY2021Q4	nsp	Depositsandprepaidhealthinsurance Depositsandprepaidhealthinsurance	201927000	usd
CY2022Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	12707000	usd
CY2021Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	12707000	usd
CY2022Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	15533000	usd
CY2021Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	4892000	usd
CY2022Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	29354000	usd
CY2021Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	15158000	usd
CY2022Q4	us-gaap	Assets Assets	2039261000	usd
CY2021Q4	us-gaap	Assets Assets	1753085000	usd
CY2022Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	7732000	usd
CY2021Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	6412000	usd
CY2022Q4	us-gaap	Accrued Payroll Taxes Current AccruedPayrollTaxesCurrent	556085000	usd
CY2021Q4	us-gaap	Accrued Payroll Taxes Current AccruedPayrollTaxesCurrent	467892000	usd
CY2022Q4	nsp	Accrued Worksite Employee Payroll Costs AccruedWorksiteEmployeePayrollCosts	513397000	usd
CY2021Q4	nsp	Accrued Worksite Employee Payroll Costs AccruedWorksiteEmployeePayrollCosts	409653000	usd
CY2022Q4	nsp	Accrued Health Insurance Costs AccruedHealthInsuranceCosts	53402000	usd
CY2021Q4	nsp	Accrued Health Insurance Costs AccruedHealthInsuranceCosts	50001000	usd
CY2022Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	53485000	usd
CY2021Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	50534000	usd
CY2022Q4	us-gaap	Accrued Salaries Current And Noncurrent AccruedSalariesCurrentAndNoncurrent	89147000	usd
CY2021Q4	us-gaap	Accrued Salaries Current And Noncurrent AccruedSalariesCurrentAndNoncurrent	74778000	usd
CY2022Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	80122000	usd
CY2021Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	69303000	usd
CY2022Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1353370000	usd
CY2021Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1128573000	usd
CY2022Q4	us-gaap	Workers Compensation Liability Noncurrent WorkersCompensationLiabilityNoncurrent	179629000	usd
CY2021Q4	us-gaap	Workers Compensation Liability Noncurrent WorkersCompensationLiabilityNoncurrent	192694000	usd
CY2022Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	369400000	usd
CY2021Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	369400000	usd
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	55587000	usd
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	64192000	usd
CY2022Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	604616000	usd
CY2021Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	626286000	usd
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000	shares
CY2021Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2022Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2022Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2021Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	120000000	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	55489000	shares
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	55489000	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	37881000	shares
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	38330000	shares
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	555000	usd
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	555000	usd
CY2022Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	151144000	usd
CY2021Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	109179000	usd
CY2022Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	17608000	shares
CY2021Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	17159000	shares
CY2022Q4	us-gaap	Treasury Stock Value TreasuryStockValue	725532000	usd
CY2021Q4	us-gaap	Treasury Stock Value TreasuryStockValue	665089000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-82000	usd
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-9000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	655190000	usd
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	553590000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	81275000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	-1774000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2039261000	usd
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1753085000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	5938818000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4973070000	usd
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4287004000	usd
CY2022	nsp	Payroll Taxes Benefits And Workers Compensation Costs PayrollTaxesBenefitsAndWorkersCompensationCosts	4927585000	usd
CY2021	nsp	Payroll Taxes Benefits And Workers Compensation Costs PayrollTaxesBenefitsAndWorkersCompensationCosts	4152968000	usd
CY2020	nsp	Payroll Taxes Benefits And Workers Compensation Costs PayrollTaxesBenefitsAndWorkersCompensationCosts	3480150000	usd
CY2022	us-gaap	Gross Profit GrossProfit	1011233000	usd
CY2021	us-gaap	Gross Profit GrossProfit	820102000	usd
CY2020	us-gaap	Gross Profit GrossProfit	806854000	usd
CY2022	nsp	Salaries Wages And Payroll Taxes SalariesWagesAndPayrollTaxes	430945000	usd
CY2021	nsp	Salaries Wages And Payroll Taxes SalariesWagesAndPayrollTaxes	379171000	usd
CY2020	nsp	Salaries Wages And Payroll Taxes SalariesWagesAndPayrollTaxes	353273000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	50080000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	40623000	usd
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	60145000	usd
CY2022	us-gaap	Sales Commissions And Fees SalesCommissionsAndFees	45672000	usd
CY2021	us-gaap	Sales Commissions And Fees SalesCommissionsAndFees	34922000	usd
CY2020	us-gaap	Sales Commissions And Fees SalesCommissionsAndFees	32835000	usd
CY2022	us-gaap	Advertising Expense AdvertisingExpense	37503000	usd
CY2021	us-gaap	Advertising Expense AdvertisingExpense	29097000	usd
CY2020	us-gaap	Advertising Expense AdvertisingExpense	21556000	usd
CY2022	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	156134000	usd
CY2021	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	124413000	usd
CY2020	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	113167000	usd
CY2022	us-gaap	Depreciation And Amortization DepreciationAndAmortization	40660000	usd
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	38547000	usd
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	31189000	usd
CY2022	us-gaap	Operating Expenses OperatingExpenses	760994000	usd
CY2021	us-gaap	Operating Expenses OperatingExpenses	646773000	usd
CY2020	us-gaap	Operating Expenses OperatingExpenses	612165000	usd
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	250239000	usd
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	173329000	usd
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	194689000	usd
CY2022	us-gaap	Interest Income Other InterestIncomeOther	9393000	usd
CY2021	us-gaap	Interest Income Other InterestIncomeOther	2447000	usd
CY2020	us-gaap	Interest Income Other InterestIncomeOther	2597000	usd
CY2022	us-gaap	Interest Expense InterestExpense	14207000	usd
CY2021	us-gaap	Interest Expense InterestExpense	7458000	usd
CY2020	us-gaap	Interest Expense InterestExpense	8016000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	245425000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	168318000	usd
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	189270000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	66075000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	44238000	usd
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	51033000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	179350000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	124080000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	138237000	usd
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.70
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.22
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.57
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.64
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.18
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.54
CY2022	nsp	Gross Billings GrossBillings	40126910000	usd
CY2021	nsp	Gross Billings GrossBillings	33318693000	usd
CY2020	nsp	Gross Billings GrossBillings	28168611000	usd
CY2022	nsp	Worksite Employee Payroll Cost WorksiteEmployeePayrollCost	34188092000	usd
CY2021	nsp	Worksite Employee Payroll Cost WorksiteEmployeePayrollCost	28345623000	usd
CY2020	nsp	Worksite Employee Payroll Cost WorksiteEmployeePayrollCost	23881607000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	5938818000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4973070000	usd
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4287004000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	179350000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	124080000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	138237000	usd
CY2022	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-73000	usd
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-14000	usd
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-7000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	179277000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	124066000	usd
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	138230000	usd
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	4079000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	-1774000	usd
CY2022	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	73285000	usd
CY2022	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	0	usd
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	99415000	usd
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	0	usd
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	60145000	usd
CY2020	us-gaap	Stockholders Equity Other StockholdersEquityOther	-2962000	usd
CY2020	us-gaap	Dividends Common Stock DividendsCommonStock	61869000	usd
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-7000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	138237000	usd
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	44132000	usd
CY2021	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	69725000	usd
CY2021	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	0	usd
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	40623000	usd
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	240000	usd
CY2021	us-gaap	Stockholders Equity Other StockholdersEquityOther	-3069000	usd
CY2021	us-gaap	Dividends Common Stock DividendsCommonStock	144179000	usd
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-14000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	124080000	usd
CY2022	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	50080000	usd
CY2022	us-gaap	Stockholders Equity Other StockholdersEquityOther	-3569000	usd
CY2022	us-gaap	Dividends Common Stock DividendsCommonStock	76592000	usd
CY2022	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-73000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	179350000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	81275000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	179350000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	124080000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	138237000	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	40660000	usd
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	38547000	usd
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	31189000	usd
CY2022	us-gaap	Investment Income Net Amortization Of Discount And Premium InvestmentIncomeNetAmortizationOfDiscountAndPremium	-843000	usd
CY2021	us-gaap	Investment Income Net Amortization Of Discount And Premium InvestmentIncomeNetAmortizationOfDiscountAndPremium	-884000	usd
CY2020	us-gaap	Investment Income Net Amortization Of Discount And Premium InvestmentIncomeNetAmortizationOfDiscountAndPremium	-783000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	50080000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	40623000	usd
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	60145000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-10641000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	4711000	usd
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-5647000	usd
CY2022	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	109458000	usd
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	120560000	usd
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-73033000	usd
CY2022	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	421000	usd
CY2021	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	1121000	usd
CY2020	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-254000	usd
CY2022	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	5206000	usd
CY2021	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	13851000	usd
CY2020	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-4032000	usd
CY2022	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-1757000	usd
CY2021	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-4356000	usd
CY2020	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-15725000	usd
CY2022	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	1320000	usd
CY2021	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	209000	usd
CY2020	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	1638000	usd
CY2022	us-gaap	Increase Decrease In Other Employee Related Liabilities IncreaseDecreaseInOtherEmployeeRelatedLiabilities	88193000	usd
CY2021	us-gaap	Increase Decrease In Other Employee Related Liabilities IncreaseDecreaseInOtherEmployeeRelatedLiabilities	89932000	usd
CY2020	us-gaap	Increase Decrease In Other Employee Related Liabilities IncreaseDecreaseInOtherEmployeeRelatedLiabilities	100712000	usd
CY2022	nsp	Increase Decreasein Wse Epayrollexpense IncreaseDecreaseinWSEEpayrollexpense	103744000	usd
CY2021	nsp	Increase Decreasein Wse Epayrollexpense IncreaseDecreaseinWSEEpayrollexpense	74817000	usd
CY2020	nsp	Increase Decreasein Wse Epayrollexpense IncreaseDecreaseinWSEEpayrollexpense	-67023000	usd
CY2022	us-gaap	Increase Decrease In Health Care Insurance Liabilities IncreaseDecreaseInHealthCareInsuranceLiabilities	3401000	usd
CY2021	us-gaap	Increase Decrease In Health Care Insurance Liabilities IncreaseDecreaseInHealthCareInsuranceLiabilities	17316000	usd
CY2020	us-gaap	Increase Decrease In Health Care Insurance Liabilities IncreaseDecreaseInHealthCareInsuranceLiabilities	11505000	usd
CY2022	us-gaap	Increase Decrease In Workers Compensation Liabilities IncreaseDecreaseInWorkersCompensationLiabilities	-10114000	usd
CY2021	us-gaap	Increase Decrease In Workers Compensation Liabilities IncreaseDecreaseInWorkersCompensationLiabilities	-197000	usd
CY2020	us-gaap	Increase Decrease In Workers Compensation Liabilities IncreaseDecreaseInWorkersCompensationLiabilities	-3052000	usd
CY2022	us-gaap	Increase Decrease In Accrued Salaries IncreaseDecreaseInAccruedSalaries	-5179000	usd
CY2021	us-gaap	Increase Decrease In Accrued Salaries IncreaseDecreaseInAccruedSalaries	14716000	usd
CY2020	us-gaap	Increase Decrease In Accrued Salaries IncreaseDecreaseInAccruedSalaries	-20763000	usd
CY2022	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	19362000	usd
CY2021	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	-14307000	usd
CY2020	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	5585000	usd
CY2022	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	168341000	usd
CY2021	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	136075000	usd
CY2020	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	208116000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	347691000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	260155000	usd
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	346353000	usd
CY2022	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	46748000	usd
CY2021	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	58202000	usd
CY2020	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	50624000	usd
CY2022	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	44955000	usd
CY2021	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	60045000	usd
CY2020	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	49635000	usd
CY2022	nsp	Marketable Securities Proceeds From Dispositions MarketableSecuritiesProceedsFromDispositions	0	usd
CY2021	nsp	Marketable Securities Proceeds From Dispositions MarketableSecuritiesProceedsFromDispositions	0	usd
CY2020	nsp	Marketable Securities Proceeds From Dispositions MarketableSecuritiesProceedsFromDispositions	484000	usd
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	30329000	usd
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	32856000	usd
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	98116000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-32122000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-31013000	usd
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-98621000	usd
CY2022	nsp	Treasury Stock Acquired TreasuryStockAcquired	73285000	usd
CY2021	nsp	Treasury Stock Acquired TreasuryStockAcquired	69725000	usd
CY2020	nsp	Treasury Stock Acquired TreasuryStockAcquired	99415000	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	76592000	usd
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	144179000	usd
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	61869000	usd
CY2022	us-gaap	Proceeds From Secured Lines Of Credit ProceedsFromSecuredLinesOfCredit	0	usd
CY2021	us-gaap	Proceeds From Secured Lines Of Credit ProceedsFromSecuredLinesOfCredit	0	usd
CY2020	us-gaap	Proceeds From Secured Lines Of Credit ProceedsFromSecuredLinesOfCredit	100000000	usd
CY2022	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	8727000	usd
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	5831000	usd
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	7701000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-141150000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-208073000	usd
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-53583000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	174419000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	21069000	usd
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	194149000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	786699000	usd
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	592550000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1013919000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	5938818000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	786699000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	57354000	usd
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	53835000	usd
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	51097000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	13402000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	7268000	usd
CY2020	us-gaap	Interest Paid Net InterestPaidNet	8977000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	9736000	usd
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	19572000	usd
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	22770000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4973070000	usd
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4287004000	usd
CY2022	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1
CY2022	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:10pt;margin-top:10pt"><span style="color:#4c8c2b;font-family:'Arial',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-bottom:10pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with United States Generally Accepted Accounting Principles (“GAAP”) requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.</span></div>
CY2022	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-bottom:10pt;margin-top:10pt"><span style="color:#4c8c2b;font-family:'Arial',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Concentrations of Credit Risk</span></div><div style="margin-bottom:10pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Financial instruments that could potentially subject us to concentration of credit risk include accounts receivable and marketable securities.</span></div>
CY2022Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	530613000	usd
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	512995000	usd
CY2022Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	330621000	usd
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	302272000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	199992000	usd
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	210723000	usd
CY2022	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	13200000	usd
CY2021	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	10900000	usd
CY2020	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	8700000	usd
CY2022Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	33700000	usd
CY2021Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	35400000	usd
CY2022Q4	nsp	Benefits Costs Incurred Relatedto Runoff BenefitsCostsIncurredRelatedtoRunoff	12100000	usd
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2022	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2021	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2022Q4	nsp	Percentageofourhealthinsurancecoverageprovidedby United PercentageofourhealthinsurancecoverageprovidedbyUnited	0.87
CY2022	nsp	Number Of Days In Advance Of Beginning Of Reporting Quarter Carrier Establishes Cash Funding Rates NumberOfDaysInAdvanceOfBeginningOfReportingQuarterCarrierEstablishesCashFundingRates	P90D
CY2022Q4	nsp	Prepaid Health Insurance PrepaidHealthInsurance	9000000	usd
CY2022Q4	nsp	Required Deposit For Health Care Costs RequiredDepositForHealthCareCosts	6500000	usd
CY2022Q4	nsp	Prepaid Health Insurance Current And Noncurrent PrepaidHealthInsuranceCurrentAndNoncurrent	3700000	usd
CY2022Q4	nsp	Prepaid Health Insurance PrepaidHealthInsurance	9000000	usd
CY2022Q4	nsp	Portionofinsurancecoststhatislessthantheagreeduponsurplusincludedinaccruedhealthinsurancecostsacntliab Portionofinsurancecoststhatislessthantheagreeduponsurplusincludedinaccruedhealthinsurancecostsacntliab	-5300000	usd
CY2022Q4	nsp	Premiums Owed To United PremiumsOwedToUnited	46400000	usd
CY2021Q4	nsp	Benefits Costs Incurred Relatedto Runoff BenefitsCostsIncurredRelatedtoRunoff	-4900000	usd
CY2020Q4	nsp	Benefits Costs Incurred Relatedto Runoff BenefitsCostsIncurredRelatedtoRunoff	-200000	usd
CY2019Q3	nsp	Workers Compensation Maximum Economic Burden First Layer Of Claims Per Occurrence WorkersCompensationMaximumEconomicBurdenFirstLayerOfClaimsPerOccurrence	1000000	usd
CY2019Q3	nsp	Workers Compensation Maximum Economic Burden First Layer Of Claims Per Occurrence WorkersCompensationMaximumEconomicBurdenFirstLayerOfClaimsPerOccurrence	1000000	usd
CY2019Q3	nsp	Workers Compensation Maximum Aggregate Economic Burden For Claims In Excess Of First Layer Cap Per Policy Year WorkersCompensationMaximumAggregateEconomicBurdenForClaimsInExcessOfFirstLayerCapPerPolicyYear	6000000	usd
CY2019Q3	nsp	Workers Compensation Maximum Economic Burden First Layer Of Claims Per Occurrence WorkersCompensationMaximumEconomicBurdenFirstLayerOfClaimsPerOccurrence	1000000	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
CY2022	nsp	Decrease Increase In Accrued Workers Compensation Costs For Changes In Estimated Losses DecreaseIncreaseInAccruedWorkersCompensationCostsForChangesInEstimatedLosses	42200000	usd
CY2021	nsp	Decrease Increase In Accrued Workers Compensation Costs For Changes In Estimated Losses DecreaseIncreaseInAccruedWorkersCompensationCostsForChangesInEstimatedLosses	41700000	usd
CY2020	nsp	Decrease Increase In Accrued Workers Compensation Costs For Changes In Estimated Losses DecreaseIncreaseInAccruedWorkersCompensationCostsForChangesInEstimatedLosses	42100000	usd
CY2022	nsp	Us Treasury Rates That Correspond With Weighted Average Estimated Claim Payout Period USTreasuryRatesThatCorrespondWithWeightedAverageEstimatedClaimPayoutPeriod	0.029
CY2021	nsp	Us Treasury Rates That Correspond With Weighted Average Estimated Claim Payout Period USTreasuryRatesThatCorrespondWithWeightedAverageEstimatedClaimPayoutPeriod	0.006
CY2022	us-gaap	Schedule Of Liability For Unpaid Claims And Claims Adjustment Expense ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense	<div><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The following table provides the activity and balances related to incurred but not paid workers’ compensation claims:</span></div><div style="margin-top:5pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:99.861%"><tr><td style="width:1.0%"/><td style="width:73.030%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.834%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.836%"/><td style="width:0.1%"/></tr><tr><td colspan="3" style="padding:0 1pt"/><td colspan="6" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#4c8c2b;font-family:'Arial',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Year Ended December 31,</span></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#4c8c2b;font-family:'Arial',sans-serif;font-size:9pt;font-style:italic;font-weight:400;line-height:120%">(in thousands)</span></td><td colspan="3" style="border-top:1pt solid #4c8c2b;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#4c8c2b;font-family:'Arial',sans-serif;font-size:10pt;font-weight:700;line-height:120%">2022</span></td><td colspan="3" style="border-top:1pt solid #4c8c2b;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#4c8c2b;font-family:'Arial',sans-serif;font-size:10pt;font-weight:700;line-height:120%">2021</span></td></tr><tr style="height:6pt"><td colspan="3" style="border-top:1pt solid #4c8c2b;padding:0 1pt"/><td colspan="3" style="border-top:1pt solid #4c8c2b;padding:0 1pt"/><td colspan="3" style="border-top:1pt solid #4c8c2b;padding:0 1pt"/></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Beginning balance</span></td><td style="padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">$</span></td><td style="padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">239,623 </span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td style="padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">$</span></td><td style="padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">240,761 </span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Accrued claims</span></td><td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">49,121 </span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">48,097 </span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Present value discount, net of accretion</span></td><td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">(9,517)</span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">(898)</span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Paid claims</span></td><td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">(49,819)</span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">(48,337)</span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Ending balance</span></td><td style="border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:700;line-height:120%">$</span></td><td style="border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:700;line-height:120%">229,408</span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></td><td style="border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td style="border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:700;line-height:120%">$</span></td><td style="border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:700;line-height:120%">239,623</span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></td><td style="border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr style="height:3pt"><td colspan="3" style="border-top:3pt double #000000;padding:0 1pt"/><td colspan="3" style="border-top:3pt double #000000;padding:0 1pt"/><td colspan="3" style="border-top:3pt double #000000;padding:0 1pt"/></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Current portion of accrued claims</span></td><td style="padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">$</span></td><td style="padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">49,779 </span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td style="padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">$</span></td><td style="padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">46,929 </span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Long-term portion of accrued claims</span></td><td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">179,629 </span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">192,694 </span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Total accrued claims</span></td><td style="border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:700;line-height:120%">$</span></td><td style="border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:700;line-height:120%">229,408</span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></td><td style="border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td style="border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:700;line-height:120%">$</span></td><td style="border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:700;line-height:120%">239,623</span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></td><td style="border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr></table></div>
CY2021Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Opening Balance Adjustments LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseOpeningBalanceAdjustments	239623000	usd
CY2020Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Opening Balance Adjustments LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseOpeningBalanceAdjustments	240761000	usd
CY2022	nsp	Workers Compensation Expense WorkersCompensationExpense	49121000	usd
CY2021	nsp	Workers Compensation Expense WorkersCompensationExpense	48097000	usd
CY2022	nsp	Workers Compensation Discount Changed During Period WorkersCompensationDiscountChangedDuringPeriod	9517000	usd
CY2021	nsp	Workers Compensation Discount Changed During Period WorkersCompensationDiscountChangedDuringPeriod	898000	usd
CY2022	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	49819000	usd
CY2021	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	48337000	usd
CY2022Q4	us-gaap	Workers Compensation Liability Current And Noncurrent WorkersCompensationLiabilityCurrentAndNoncurrent	229408000	usd
CY2021Q4	us-gaap	Workers Compensation Liability Current And Noncurrent WorkersCompensationLiabilityCurrentAndNoncurrent	239623000	usd
CY2022Q4	nsp	Workers Compensation Liability Current Net WorkersCompensationLiabilityCurrentNet	49779000	usd
CY2021Q4	nsp	Workers Compensation Liability Current Net WorkersCompensationLiabilityCurrentNet	46929000	usd
CY2022Q4	us-gaap	Workers Compensation Liability Noncurrent WorkersCompensationLiabilityNoncurrent	179629000	usd
CY2021Q4	us-gaap	Workers Compensation Liability Noncurrent WorkersCompensationLiabilityNoncurrent	192694000	usd
CY2022Q4	us-gaap	Workers Compensation Liability Current And Noncurrent WorkersCompensationLiabilityCurrentAndNoncurrent	229408000	usd
CY2021Q4	us-gaap	Workers Compensation Liability Current And Noncurrent WorkersCompensationLiabilityCurrentAndNoncurrent	239623000	usd
CY2022Q4	nsp	Workers Compensation Administrative Fees Accrued WorkersCompensationAdministrativeFeesAccrued	3700000	usd
CY2021Q4	nsp	Workers Compensation Administrative Fees Accrued WorkersCompensationAdministrativeFeesAccrued	3600000	usd
CY2022	nsp	Undiscounted Accrued Workers Compensation Costs UndiscountedAccruedWorkersCompensationCosts	250500000	usd
CY2021	nsp	Undiscounted Accrued Workers Compensation Costs UndiscountedAccruedWorkersCompensationCosts	255100000	usd
CY2022	nsp	Time Period Incurred Claims Expected To Be Paid Recorded As Restricted Cash TimePeriodIncurredClaimsExpectedToBePaidRecordedAsRestrictedCash	P1Y
CY2022	nsp	Return Of Excess Claim Funds ReturnOfExcessClaimFunds	30200000	usd
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	49800000	usd
CY2022Q4	nsp	Deposits Workers Compensation DepositsWorkersCompensation	196400000	usd
CY2022	nsp	Time Period Estimate Of Incurred Claim Costs To Be Paid Included In Short Term Liabilities TimePeriodEstimateOfIncurredClaimCostsToBePaidIncludedInShortTermLiabilities	P1Y
CY2022Q4	nsp	Number Of Stock Based Employee Compensation Plans NumberOfStockBasedEmployeeCompensationPlans	1
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P3Y
CY2022	nsp	Percentageofgrantsissuedtodirectorsthatarevestedforannualawardgrants. Percentageofgrantsissuedtodirectorsthatarevestedforannualawardgrants.	1
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P3Y
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P3Y
CY2022	nsp	Percentageofeligiblecompensationmatchedmaximum Percentageofeligiblecompensationmatchedmaximum	0.03
CY2022Q4	nsp	Money Market Funds Overnight Holdings At Carrying Value MoneyMarketFundsOvernightHoldingsAtCarryingValue	678512000	usd
CY2021Q4	nsp	Money Market Funds Overnight Holdings At Carrying Value MoneyMarketFundsOvernightHoldingsAtCarryingValue	490154000	usd
CY2022Q4	us-gaap	Short Term Investments ShortTermInvestments	90031000	usd
CY2021Q4	us-gaap	Short Term Investments ShortTermInvestments	120742000	usd
CY2022Q4	us-gaap	Cash Cash	41047000	usd
CY2021Q4	us-gaap	Cash Cash	47331000	usd
CY2022Q4	srt	Drafts Payable DraftsPayable	43694000	usd
CY2021Q4	srt	Drafts Payable DraftsPayable	50624000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	765896000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	607603000	usd
CY2022Q4	nsp	Payroll Withholdings Included In Cash Balance PayrollWithholdingsIncludedInCashBalance	504800000	usd
CY2021Q4	nsp	Payroll Withholdings Included In Cash Balance PayrollWithholdingsIncludedInCashBalance	424800000	usd
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	575812000	usd
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	554846000	usd
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	367342000	usd
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	46929000	usd
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	45522000	usd
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	49295000	usd
CY2020Q4	us-gaap	Funds Held For Clients FundsHeldForClients	0	usd
CY2019Q4	us-gaap	Funds Held For Clients FundsHeldForClients	0	usd
CY2021Q4	nsp	Deposits Workers Compensation DepositsWorkersCompensation	185027000	usd
CY2020Q4	nsp	Deposits Workers Compensation DepositsWorkersCompensation	186331000	usd
CY2019Q4	nsp	Deposits Workers Compensation DepositsWorkersCompensation	175913000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	786699000	usd
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	592550000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	732828000	usd
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	575812000	usd
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	554846000	usd
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	49779000	usd
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	46929000	usd
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	45522000	usd
CY2022Q4	us-gaap	Funds Held For Clients FundsHeldForClients	34942000	usd
CY2020Q4	us-gaap	Funds Held For Clients FundsHeldForClients	0	usd
CY2022Q4	nsp	Deposits Workers Compensation DepositsWorkersCompensation	196370000	usd
CY2021Q4	nsp	Deposits Workers Compensation DepositsWorkersCompensation	185027000	usd
CY2020Q4	nsp	Deposits Workers Compensation DepositsWorkersCompensation	186331000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1013919000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	786699000	usd
CY2022Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	13934000	usd
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	10522000	usd
CY2022Q4	nsp	Unbilled Unbilled	600446000	usd
CY2021Q4	nsp	Unbilled Unbilled	490533000	usd
CY2022Q4	us-gaap	Other Receivables OtherReceivables	8384000	usd
CY2021Q4	us-gaap	Other Receivables OtherReceivables	12251000	usd
CY2022Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	622764000	usd
CY2021Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	513306000	usd
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1000000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1000000	usd
CY2022Q4	nsp	Unbilled Accrued Worksite Employee Payroll Costs UnbilledAccruedWorksiteEmployeePayrollCosts	513397000	usd
CY2021Q4	nsp	Unbilled Accrued Worksite Employee Payroll Costs UnbilledAccruedWorksiteEmployeePayrollCosts	409653000	usd
CY2022Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	123849000	usd
CY2021Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	100934000	usd
CY2022Q4	nsp	Client Prepayments Included In Cash Balance ClientPrepaymentsIncludedInCashBalance	36800000	usd
CY2021Q4	nsp	Client Prepayments Included In Cash Balance ClientPrepaymentsIncludedInCashBalance	20054000	usd
CY2022Q4	nsp	Unbilled Unbilled	600446000	usd
CY2021Q4	nsp	Unbilled Unbilled	490533000	usd
CY2022Q4	nsp	Prepaid Health Insurance PrepaidHealthInsurance	9000000	usd
CY2021Q4	nsp	Prepaid Health Insurance PrepaidHealthInsurance	9000000	usd
CY2022Q4	nsp	Deposits Health Insurance DepositsHealthInsurance	7900000	usd
CY2021Q4	nsp	Deposits Health Insurance DepositsHealthInsurance	7900000	usd
CY2022Q4	nsp	Deposits Workers Compensation DepositsWorkersCompensation	196370000	usd
CY2021Q4	nsp	Deposits Workers Compensation DepositsWorkersCompensation	185027000	usd
CY2022Q4	nsp	Depositsandprepaidhealthinsurance Depositsandprepaidhealthinsurance	213270000	usd
CY2021Q4	nsp	Depositsandprepaidhealthinsurance Depositsandprepaidhealthinsurance	201927000	usd
CY2022Q4	nsp	Prepaid Health Insurance PrepaidHealthInsurance	9000000	usd
CY2022Q3	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	650000000	usd
CY2022Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	700000000	usd
CY2022	nsp	Percentage Of Subsidiary Stock Securing Debt PercentageOfSubsidiaryStockSecuringDebt	0.65
CY2022Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	1000000	usd
CY2022Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	369400000	usd
CY2022Q4	us-gaap	Long Term Debt Maturity Date LongTermDebtMaturityDate	2027-06-30
CY2022Q4	nsp	Applicable Margin Federal Funds Rate ApplicableMarginFederalFundsRate	0.0050
CY2022Q4	nsp	Applicable Margin30 Day Libor ApplicableMargin30DayLibor	0.0200
CY2022	us-gaap	Line Of Credit Facility Unused Capacity Commitment Fee Percentage LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage	0.0025
CY2022	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.035
CY2022Q4	us-gaap	Deferred Tax Liabilities Deferred Expense DeferredTaxLiabilitiesDeferredExpense	5395000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Deferred Expense DeferredTaxLiabilitiesDeferredExpense	4665000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	7448000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	8210000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Capitalized Software DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware	2598000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Capitalized Software DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware	11140000	usd
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Files In Submission

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$NSP
INSPERITY, INC. Stock $nsp

2023 Q1 Form 10-K Financial Statement

#000100075323000012 Filed on February 10, 2023

Income Statement

Balance Sheet

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Facts In Submission

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$NSP INSPERITY, INC. Stock $nsp

2023 Q1 Form 10-K Financial Statement

#000100075323000012 Filed on February 10, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NSP
INSPERITY, INC. Stock $nsp