$KFRC
KFORCE INC Stock $kfrc

$kfrc Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-K Financial Statement

#000093042020000033 Filed on February 21, 2020

Income Statement

Concept	2018 Q4	2018 Q3	2018 Q2
Revenue	$330.4M	$326.6M	$329.5M
YoY Change	-3.56%	-4.24%	-3.17%
Cost Of Revenue	$232.7M	$230.5M	$229.3M
YoY Change	38.43%	-2.59%	-2.99%
Gross Profit	$97.71M	$96.05M	$100.2M
YoY Change	-4.79%	-7.98%	-3.56%
Gross Profit Margin	29.58%	29.41%	30.41%
Selling, General & Admin	$77.20M	$74.40M	$76.90M
YoY Change	30.41%	-9.18%	-6.79%
% of Gross Profit	79.01%	77.46%	76.73%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$2.100M	$2.000M	$2.100M
YoY Change	0.0%	-9.09%	0.0%
% of Gross Profit	2.15%	2.08%	2.1%
Operating Expenses	$78.80M	$77.15M	$79.85M
YoY Change	30.68%	-9.66%	-7.06%
Operating Profit	$18.91M	$19.95M	$21.63M
YoY Change	-55.32%	-1.95%	11.71%
Interest Expense	-$900.0K	-$1.000M	-$1.200M
YoY Change	-25.0%	-23.08%	-7.69%
% of Operating Profit	-4.76%	-5.01%	-5.55%
Other Income/Expense, Net	$0.00	-$1.052M	-$1.258M
YoY Change		-22.87%	-7.3%
Pretax Income	$18.00M	$18.90M	$20.37M
YoY Change	106.9%	-0.45%	13.14%
Income Tax	$4.400M	$4.739M	$5.196M
% Of Pretax Income	24.44%	25.08%	25.51%
Net Earnings	$16.36M	$16.18M	$16.27M
YoY Change	166.38%	60.18%	46.02%
Net Earnings / Revenue	4.95%	4.95%	4.94%
Basic Earnings Per Share	$0.66	$0.65	$0.66
Diluted Earnings Per Share	$0.65	$0.64	$0.65
COMMON SHARES
Basic Shares Outstanding	26.07M shares	24.73M shares	24.71M shares
Diluted Shares Outstanding		25.37M shares	25.18M shares

Balance Sheet

Concept	2018 Q4	2018 Q3	2018 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$100.0K	$500.0K	$500.0K
YoY Change	-75.0%	-28.57%	-85.71%
Cash & Equivalents	$112.0K	$466.0K	$473.0K
Short-Term Investments
Other Short-Term Assets	$37.50M	$13.60M	$14.00M
YoY Change	209.92%	7.09%	28.44%
Inventory
Prepaid Expenses
Receivables	$210.6M	$237.6M	$239.1M
Other Receivables	$300.0K	$300.0K	$900.0K
Total Short-Term Assets	$248.5M	$252.0M	$254.5M
YoY Change	1.23%	-2.75%	5.35%
LONG-TERM ASSETS
Property, Plant & Equipment	$34.32M	$37.01M	$38.57M
YoY Change	-13.5%	-8.96%	-7.93%
Goodwill	$25.04M	$45.97M	$45.97M
YoY Change	0.0%	0.0%	0.0%
Intangibles	$2.952M	$3.038M	$3.125M
YoY Change	-10.46%	-10.22%	-9.94%
Long-Term Investments	$0.00
YoY Change
Other Assets	$36.66M	$41.57M	$40.49M
YoY Change	-5.01%	11.54%	12.88%
Total Long-Term Assets	$131.4M	$139.6M	$139.7M
YoY Change	-5.34%	-5.05%	-5.77%
TOTAL ASSETS
Total Short-Term Assets	$248.5M	$252.0M	$254.5M
Total Long-Term Assets	$131.4M	$139.6M	$139.7M
Total Assets	$379.9M	$391.7M	$394.2M
YoY Change	-1.14%	-3.58%	1.12%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$18.79M	$24.35M	$25.56M
YoY Change	-12.96%	26.24%	37.19%
Accrued Expenses	$13.75M	$13.42M	$12.40M
YoY Change	3.52%	-11.65%	-8.79%
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	$90.36M	$94.84M	$91.77M
YoY Change	7.93%	7.79%	13.26%
LONG-TERM LIABILITIES
Long-Term Debt	$73.20M	$81.10M	$102.7M
YoY Change	-38.54%	-37.08%	-19.39%
Other Long-Term Liabilities	$44.87M	$51.81M	$49.43M
YoY Change	-4.92%	10.1%	6.62%
Total Long-Term Liabilities	$44.87M	$51.81M	$49.43M
YoY Change	-4.92%	10.1%	6.62%
TOTAL LIABILITIES
Total Short-Term Liabilities	$90.36M	$94.84M	$91.77M
Total Long-Term Liabilities	$44.87M	$51.81M	$49.43M
Total Liabilities	$211.6M	$227.7M	$243.9M
YoY Change	-15.38%	-13.72%	-4.26%
SHAREHOLDERS EQUITY
Retained Earnings	$237.3M	$225.7M	$214.1M
YoY Change	21.61%	17.43%	15.61%
Common Stock	$719.0K	$716.0K	$716.0K
YoY Change	0.56%	0.56%	0.42%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$518.3M	$508.1M	$507.8M
YoY Change	3.86%	4.61%	4.87%
Treasury Stock Shares	45.82M shares	45.48M shares	45.48M shares
Shareholders Equity	$168.3M	$163.9M	$150.3M
YoY Change
Total Liabilities & Shareholders Equity	$379.9M	$391.7M	$394.2M
YoY Change	-1.14%	-3.58%	1.12%

Cashflow Statement

Concept	2018 Q4	2018 Q3	2018 Q2
OPERATING ACTIVITIES
Net Income	$16.36M	$16.18M	$16.27M
YoY Change	166.38%	60.18%	46.02%
Depreciation, Depletion And Amortization	$2.100M	$2.000M	$2.100M
YoY Change	0.0%	-9.09%	0.0%
Cash From Operating Activities	$23.00M	$26.40M	$28.00M
YoY Change	-2.95%	26300.0%	75.0%
INVESTING ACTIVITIES
Capital Expenditures	-$1.200M	-$900.0K	-$1.600M
YoY Change	200.0%	-18.18%	-20.0%
Acquisitions
YoY Change
Other Investing Activities	$0.00	$1.000M
YoY Change		0.0%
Cash From Investing Activities	-$1.200M	$100.0K	-$1.600M
YoY Change	200.0%	-200.0%	-20.0%
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	-26.60M	-26.10M
YoY Change	-5.93%	817.24%	99.24%
NET CHANGE
Cash From Operating Activities	23.00M	26.40M	28.00M
Cash From Investing Activities	-1.200M	100.0K	-1.600M
Cash From Financing Activities	-22.20M	-26.60M	-26.10M
Net Change In Cash	-400.0K	-100.0K	300.0K
YoY Change	33.33%	-96.55%	-66.67%
FREE CASH FLOW
Cash From Operating Activities	$23.00M	$26.40M	$28.00M
Capital Expenditures	-$1.200M	-$900.0K	-$1.600M
Free Cash Flow	$24.20M	$27.30M	$29.60M
YoY Change	0.41%	2175.0%	64.44%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0000930420
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	000-26058
CY2019	dei	Entity Registrant Name EntityRegistrantName	Kforce Inc.
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	FL
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	59-3264661
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	1001 East Palm Avenue
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Tampa
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	FL
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	33605
CY2019	dei	City Area Code CityAreaCode	813
CY2019	dei	Local Phone Number LocalPhoneNumber	552-5000
CY2019	dei	Security12b Title Security12bTitle	Common Stock, $0.01 per share
CY2019	us-gaap	Cost Of Revenue CostOfRevenue	952349000	USD
CY2019	dei	Trading Symbol TradingSymbol	KFRC
CY2019	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
CY2019Q2	dei	Entity Public Float EntityPublicFloat	753609332	USD
CY2020Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	22712952	shares
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1347387000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1303937000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1253646000	USD
CY2018	us-gaap	Cost Of Revenue CostOfRevenue	917450000	USD
CY2017	us-gaap	Cost Of Revenue CostOfRevenue	878049000	USD
CY2019	us-gaap	Gross Profit GrossProfit	395038000	USD
CY2018	us-gaap	Gross Profit GrossProfit	386487000	USD
CY2017	us-gaap	Gross Profit GrossProfit	375597000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	314167000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	307250000	USD
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	308313000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	6050000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	6836000	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	7266000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	74821000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	72401000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	60018000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-3425000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-4521000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-5100000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	71396000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	67880000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	54918000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16830000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17004000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25324000	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	54566000	USD
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	50876000	USD
CY2017	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	29594000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	76296000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	7104000	USD
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	3691000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	130862000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	57980000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	33285000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	2183000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-881000	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	373000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-807000	USD
CY2018	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	315000	USD
CY2017	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	289000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	127872000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	59176000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	33201000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.35
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.05
CY2017	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.17
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	3.29
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.29
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.15
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.64
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.34
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.32
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.29
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.02
CY2017	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.16
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	3.21
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.28
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.14
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.50
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.30
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.30
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	23186000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	24738000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25222000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	23772000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	25251000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	25586000	shares
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	19831000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	112000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2078000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2800000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	217929000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	210559000	USD
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CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	29975000	USD
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CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	72838000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	36664000	USD
CY2019Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	8037000	USD
CY2018Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	7147000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	25040000	USD
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CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	5685000	USD
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CY2018Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	1616000	USD
CY2019Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	878000	USD
CY2018Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	4553000	USD
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CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	90358000	USD
CY2019Q4	us-gaap	Long Term Line Of Credit LongTermLineOfCredit	65000000	USD
CY2018Q4	us-gaap	Long Term Line Of Credit LongTermLineOfCredit	71800000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	63898000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	44868000	USD
CY2019Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Noncurrent LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent	0	USD
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CY2018Q4	us-gaap	Liabilities Liabilities	211577000	USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
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CY2019Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
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CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	250000000	shares
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CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	72202000	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	71856000	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	71856000	shares
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	722000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	719000	USD
CY2019Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	459545000	USD
CY2018Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	447337000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1526000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1296000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	350545000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	237308000	USD
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	49277000	shares
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	45822000	shares
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	642023000	USD
CY2018Q4	us-gaap	Treasury Stock Value TreasuryStockValue	518329000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	167263000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	168331000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	381125000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	379908000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	121736000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	33285000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	USD
CY2017	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	72000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7600000	USD
CY2017	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	522000	USD
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.48
CY2017	us-gaap	Dividends Common Stock DividendsCommonStock	12144000	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	373000	USD
CY2017	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	289000	USD
CY2017	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	17010000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	134277000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	57980000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	0	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8797000	USD
CY2018	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	549000	USD
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.60
CY2018	us-gaap	Dividends Common Stock DividendsCommonStock	14870000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-881000	USD
CY2018	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	315000	USD
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	19419000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	168331000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	168331000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	130862000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11007000	USD
CY2019	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	558000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.72
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	16608000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	2183000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-807000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	123897000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	167263000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	130862000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	57980000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	33285000	USD
CY2019	us-gaap	Discontinued Operation Gain Loss From Disposal Of Discontinued Operation Before Income Tax DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax	79318000	USD
CY2018	us-gaap	Discontinued Operation Gain Loss From Disposal Of Discontinued Operation Before Income Tax DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax	0	USD
CY2017	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	3148000	USD
CY2019	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-49000	USD
CY2018	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	989000	USD
CY2017	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	12243000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1209000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1820000	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1031000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	6481000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	8265000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	8508000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	9912000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	8797000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	7600000	USD
CY2019	us-gaap	Pension Expense PensionExpense	862000	USD
CY2018	us-gaap	Pension Expense PensionExpense	1821000	USD
CY2017	us-gaap	Pension Expense PensionExpense	937000	USD
CY2019	us-gaap	Gain Loss On Investments GainLossOnInvestments	-245000	USD
CY2018	us-gaap	Gain Loss On Investments GainLossOnInvestments	-563000	USD
CY2017	us-gaap	Gain Loss On Investments GainLossOnInvestments	-510000	USD
CY2019	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-1084000	USD
CY2018	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-38000	USD
CY2017	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-196000	USD
CY2019	kfrc	Noncash Lease Expense NoncashLeaseExpense	6282000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-831000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2019	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	459000	USD
CY2018	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	0	USD
CY2017	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	565000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-352000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-350000	USD
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-692000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	5360000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	10851000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	20535000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	9639000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-5741000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	8971000	USD
CY2019	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	4567000	USD
CY2018	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	1350000	USD
CY2017	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	1954000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-2163000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	10860000	USD
CY2017	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-5528000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	66617000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	87723000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	29339000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	10359000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5170000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5846000	USD
CY2019	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	9000000	USD
CY2018	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	USD
CY2017	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	USD
CY2019	us-gaap	Proceeds From Sales Of Business Affiliate And Productive Assets ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets	122544000	USD
CY2018	us-gaap	Proceeds From Sales Of Business Affiliate And Productive Assets ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets	1000000	USD
CY2017	us-gaap	Proceeds From Sales Of Business Affiliate And Productive Assets ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets	1000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	103185000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-4170000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-4846000	USD
CY2019	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	80100000	USD
CY2018	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	450400000	USD
CY2017	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	1038593000	USD
CY2019	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	86900000	USD
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	495123000	USD
CY2017	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	1033617000	USD
CY2019	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	1720000	USD
CY2018	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	2039000	USD
CY2017	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	2148000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	124453000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	22187000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	14622000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	16608000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	14871000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	12144000	USD
CY2019	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	477000	USD
CY2018	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	USD
CY2017	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-25000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-1658000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-150083000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-83820000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-25596000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	19719000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-267000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1103000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	112000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	379000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1482000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	19831000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	112000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	379000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	24935000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	13442000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	24330000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	8186000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	1480000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	3814000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	3518000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	9205000	USD
CY2019	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	558000	USD
CY2018	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	549000	USD
CY2017	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	522000	USD
CY2019	kfrc	Stock Repurchases Incurred But Not Yet Paid StockRepurchasesIncurredButNotYetPaid	0	USD
CY2018	kfrc	Stock Repurchases Incurred But Not Yet Paid StockRepurchasesIncurredButNotYetPaid	556000	USD
CY2017	kfrc	Stock Repurchases Incurred But Not Yet Paid StockRepurchasesIncurredButNotYetPaid	898000	USD
CY2019	kfrc	Disposal Group Receivable For Sale Of Disposal Group DisposalGroupReceivableForSaleOfDisposalGroup	0	USD
CY2018	kfrc	Disposal Group Receivable For Sale Of Disposal Group DisposalGroupReceivableForSaleOfDisposalGroup	0	USD
CY2017	kfrc	Disposal Group Receivable For Sale Of Disposal Group DisposalGroupReceivableForSaleOfDisposalGroup	1979000	USD
CY2018	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	6800000	USD
CY2019	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	Certain prior year amounts have been reclassified to conform with the current period presentation for amounts related to discontinued operations. Refer to Note 2 - “Discontinued Operations” for further information.
CY2019	us-gaap	Use Of Estimates UseOfEstimates	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The most critical of these estimates and assumptions relate to the following: allowance for doubtful accounts; income taxes; self-insured liabilities for workers’ compensation and health insurance; obligations for the pension plan; and the impairment of goodwill, other long-lived assets and the equity method investment. Although these and other estimates and assumptions are based on the best available information, actual results could be materially different from these estimates.
CY2019	kfrc	Revenue From Contract With Customers Contingency Period RevenueFromContractWithCustomersContingencyPeriod	P90D
CY2019	kfrc	Revenue From Contract With Customer Required Payment Period RevenueFromContractWithCustomerRequiredPaymentPeriod	P90D
CY2019Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	0	USD
CY2018Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	0	USD
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	0	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	0	USD
CY2018	kfrc	Accounts Receivable Reserves As Percentage Of Gross Accounts Receivable AccountsReceivableReservesAsPercentageOfGrossAccountsReceivable	0.010
CY2019	kfrc	Accounts Receivable Reserves As Percentage Of Gross Accounts Receivable AccountsReceivableReservesAsPercentageOfGrossAccountsReceivable	0.010
CY2019	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	1100000	USD
CY2018	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	1100000	USD
CY2017	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	900000	USD
CY2019	kfrc	Workers Compensation Deductible Per Claim WorkersCompensationDeductiblePerClaim	250000	USD
CY2019	kfrc	Health Insurance Stop Loss Maximum Per Claim HealthInsuranceStopLossMaximumPerClaim	500000	USD
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	586000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	513000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	364000	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1000	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	527000	shares
CY2019	kfrc	Effective Income Tax Rate Discontinued Operations Percent EffectiveIncomeTaxRateDiscontinuedOperationsPercent	0.044
CY2017	us-gaap	Depreciation Depreciation	6400000	USD
CY2018	kfrc	Effective Income Tax Rate Discontinued Operations Percent EffectiveIncomeTaxRateDiscontinuedOperationsPercent	0.234
CY2017	kfrc	Effective Income Tax Rate Discontinued Operations Percent EffectiveIncomeTaxRateDiscontinuedOperationsPercent	0.598
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1347387000	USD
CY2019	us-gaap	Gross Profit GrossProfit	395038000	USD
CY2019	us-gaap	Operating Expenses OperatingExpenses	323642000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	71396000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1303937000	USD
CY2018	us-gaap	Gross Profit GrossProfit	386487000	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	318607000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	67880000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1253646000	USD
CY2017	us-gaap	Gross Profit GrossProfit	375597000	USD
CY2017	us-gaap	Operating Expenses OperatingExpenses	320679000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	54918000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1347387000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1303937000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1253646000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	56570000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	63013000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	26595000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	28691000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	29975000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	34322000	USD
CY2019	us-gaap	Depreciation Depreciation	4900000	USD
CY2018	us-gaap	Depreciation Depreciation	5700000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	12074000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	12032000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	14296000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	5057000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	5369000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3004000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-301000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-397000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	8024000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16830000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17004000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25324000	USD
CY2017	us-gaap	Tax Cuts And Jobs Act Of2017 Change In Tax Rate Income Tax Expense Benefit TaxCutsAndJobsActOf2017ChangeInTaxRateIncomeTaxExpenseBenefit	3600000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.058
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.061
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.044
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.016
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.017
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.008
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.021
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.025
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.019
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.016
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.008
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.012
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.025
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.054
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.011
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.004
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.011
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.236
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.251
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.461
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	542000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	1274000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	738000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	1161000	USD
CY2019Q4	kfrc	Deferred Tax Assets Tax Deferred Expense Deferred Compensation DeferredTaxAssetsTaxDeferredExpenseDeferredCompensation	4715000	USD
CY2018Q4	kfrc	Deferred Tax Assets Tax Deferred Expense Deferred Compensation DeferredTaxAssetsTaxDeferredExpenseDeferredCompensation	5545000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	739000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	723000	USD
CY2019Q4	kfrc	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Operating Lease Liability DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOperatingLeaseLiability	5497000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	3745000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	3471000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	0	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	1630000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	160000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	224000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	16559000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	13605000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	459000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	159000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	965000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1174000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Goodwill DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill	1889000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Goodwill DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill	3123000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	4767000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	328000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	255000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	8408000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	4711000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	114000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	1747000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	8037000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	7147000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	906000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1127000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1115000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	41000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	50000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	29000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	497000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	248000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	67000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	14000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	26000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	383000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	906000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1127000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	400000	USD
CY2019Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	35413000	USD
CY2018Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	29134000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	18344000	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	8169000	USD
CY2018Q4	us-gaap	Equity Method Investments EquityMethodInvestments	0	USD
CY2019Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	8759000	USD
CY2018Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	4828000	USD
CY2019Q4	us-gaap	Debt Issuance Costs Line Of Credit Arrangements Net DebtIssuanceCostsLineOfCreditArrangementsNet	855000	USD
CY2018Q4	us-gaap	Debt Issuance Costs Line Of Credit Arrangements Net DebtIssuanceCostsLineOfCreditArrangementsNet	1182000	USD
CY2019Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	0	USD
CY2018Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	900000	USD
CY2019Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	1298000	USD
CY2018Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	620000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	72838000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	36664000	USD
CY2019Q4	us-gaap	Capitalized Computer Software Accumulated Amortization CapitalizedComputerSoftwareAccumulatedAmortization	34200000	USD
CY2018Q4	us-gaap	Capitalized Computer Software Accumulated Amortization CapitalizedComputerSoftwareAccumulatedAmortization	34100000	USD
CY2019Q4	us-gaap	Goodwill Gross GoodwillGross	176157000	USD
CY2018Q4	us-gaap	Goodwill Gross GoodwillGross	176157000	USD
CY2017Q4	us-gaap	Goodwill Gross GoodwillGross	176157000	USD
CY2019Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	151117000	USD
CY2017Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	151117000	USD
CY2018Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	151117000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	25040000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	25040000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	25040000	USD
CY2017	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019	kfrc	Minimum Specified Forecast Period After Which Cash Flows Determined Using Terminal Value Calculation MinimumSpecifiedForecastPeriodAfterWhichCashFlowsDeterminedUsingTerminalValueCalculation	P5Y
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	20267000	USD
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	18793000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	12965000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	13749000	USD
CY2019Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	33232000	USD
CY2018Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	32542000	USD
CY2019Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	38035000	USD
CY2018Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	34768000	USD
CY2019Q4	us-gaap	Accrued Payroll Taxes Current AccruedPayrollTaxesCurrent	992000	USD
CY2018Q4	us-gaap	Accrued Payroll Taxes Current AccruedPayrollTaxesCurrent	920000	USD
CY2019Q4	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	3907000	USD
CY2018Q4	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	2680000	USD
CY2019Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	1067000	USD
CY2018Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	1016000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	44001000	USD
CY2018Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	39384000	USD
CY2019Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	30361000	USD
CY2018Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	25672000	USD
CY2019Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	18080000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	15035000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	14627000	USD
CY2019Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	179000	USD
CY2018Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	0	USD
CY2019Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	651000	USD
CY2018Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	4161000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	63898000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	44868000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.038
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y6M
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	6847000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	1689000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	792000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	445000	USD
CY2019	us-gaap	Lease Cost LeaseCost	8883000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	6338000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	4999000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	3304000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	2925000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	2012000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	2595000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	22173000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	1861000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	20312000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	6994000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	6177000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	3731000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	2142000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	1745000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	1199000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	21988000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1400000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1500000	USD
CY2019	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	17000	shares
CY2018	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	19000	shares
CY2017	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	25000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	32.79
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	28.93
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	20.65
CY2019Q4	us-gaap	Deferred Compensation Liability Current DeferredCompensationLiabilityCurrent	3600000	USD
CY2018Q4	us-gaap	Deferred Compensation Liability Current DeferredCompensationLiabilityCurrent	1300000	USD
CY2019Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	30400000	USD
CY2018Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	25700000	USD
CY2019	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	400000	USD
CY2018	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	800000	USD
CY2017	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	600000	USD
CY2019Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	35400000	USD
CY2018Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	29100000	USD
CY2019Q4	us-gaap	Life Insurance Corporate Or Bank Owned Amount LifeInsuranceCorporateOrBankOwnedAmount	213100000	USD
CY2019	kfrc	Defined Benefit Plan Normal Age For Retirement DefinedBenefitPlanNormalAgeForRetirement	P65Y
CY2019	kfrc	Defined Benefit Plan Early Retirement Age DefinedBenefitPlanEarlyRetirementAge	P55Y
CY2019	kfrc	Defined Benefit Plan Benefits Payable Targeted Percentage DefinedBenefitPlanBenefitsPayableTargetedPercentage	0.45
CY2019	kfrc	Defined Benefit Plan Period For Computation Of Average Salary For Determination Of Benefit DefinedBenefitPlanPeriodForComputationOfAverageSalaryForDeterminationOfBenefit	P3Y
CY2019	kfrc	Defined Benefit Plan Employment Period For Computation Of Benefit DefinedBenefitPlanEmploymentPeriodForComputationOfBenefit	P10Y
CY2019	kfrc	Defined Benefit Plan Eligible Age Under Condition One For Reduced Benefits Under Plan DefinedBenefitPlanEligibleAgeUnderConditionOneForReducedBenefitsUnderPlan	P62Y
CY2019	kfrc	Defined Benefit Plan Eligible Service Under Condition One For Reduced Benefits Under Plan DefinedBenefitPlanEligibleServiceUnderConditionOneForReducedBenefitsUnderPlan	P10Y
CY2019	kfrc	Defined Benefit Plan Eligible Age Under Condition Two For Reduced Benefits Under Plan DefinedBenefitPlanEligibleAgeUnderConditionTwoForReducedBenefitsUnderPlan	P55Y
CY2019	kfrc	Defined Benefit Plan Employee Service Period Under Condition Two DefinedBenefitPlanEmployeeServicePeriodUnderConditionTwo	P25Y
CY2019	kfrc	Defined Benefit Plan Annuity Period For Calculation Of Benefits DefinedBenefitPlanAnnuityPeriodForCalculationOfBenefits	P10Y
CY2019	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	261000	USD
CY2018	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	1353000	USD
CY2017	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	319000	USD
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	601000	USD
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	468000	USD
CY2017	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	537000	USD
CY2019	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	862000	USD
CY2018	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	1821000	USD
CY2017	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	856000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	15035000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	14409000	USD
CY2019	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	261000	USD
CY2018	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	1353000	USD
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	601000	USD
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	468000	USD
CY2019	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-2183000	USD
CY2018	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	1195000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	18080000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	15035000	USD
CY2018	us-gaap	Pension Contributions PensionContributions	0	USD
CY2019	us-gaap	Pension Contributions PensionContributions	0	USD
CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	18100000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	15000000.0	USD
CY2019	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	0	USD
CY2019Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	0	USD
CY2019Q4	kfrc	Supplemental Unemployment Benefits On No Change In Control SupplementalUnemploymentBenefitsOnNoChangeInControl	16500000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	0	USD
CY2019Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	14347000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	0	USD
CY2019Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	0	USD
CY2019Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	0	USD
CY2019Q4	kfrc	Defined Benefit Plan Expected Future Benefit Payment Years Six Through Ten DefinedBenefitPlanExpectedFutureBenefitPaymentYearsSixThroughTen	8944000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9800000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8500000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7400000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2300000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2100000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2900000	USD
CY2019Q4	us-gaap	Purchase Obligation PurchaseObligation	10500000	USD
CY2019Q4	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	7300000	USD
CY2019Q4	us-gaap	Purchase Obligation Due In Second Year PurchaseObligationDueInSecondYear	3000000.0	USD
CY2019Q4	us-gaap	Purchase Obligation Due In Third Year PurchaseObligationDueInThirdYear	200000	USD
CY2019Q4	kfrc	Supplemental Unemployment Benefits On Change In Control SupplementalUnemploymentBenefitsOnChangeInControl	39400000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	326738000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	338861000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	345558000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	336230000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	93176000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	101026000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	102811000	USD
CY2019Q4	us-gaap	Gross Profit GrossProfit	98025000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	7974000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	16076000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	15907000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	14609000	USD
CY2019Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	18881000	USD
CY2019Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	58783000	USD
CY2018Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	1218000	USD
CY2019Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-967000	USD
CY2019Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-401000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	26855000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	74859000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	14940000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	14208000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.33
CY2019Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.67
CY2019Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.70
CY2019Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.68
CY2019Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.32
CY2019Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.66
CY2019Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.68
CY2019Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.66
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.10
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.13
CY2018Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	14156000	USD
CY2018Q4	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	13590000	USD
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.66
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.66
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.66
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.07
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.06
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.64
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.64
CY2018Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	317441000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	329535000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	326584000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	330377000	USD
CY2018Q1	us-gaap	Gross Profit GrossProfit	92509000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	100220000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	96045000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	97713000	USD
CY2018Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	7957000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	15173000	USD
CY2018Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	1099000	USD
CY2018Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	2021000	USD
CY2018Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	2766000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	9175000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	16272000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	16177000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	16356000	USD
CY2018Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.32
CY2018Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.61
CY2018Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.57
CY2018Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.55
CY2018Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.32
CY2018Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.60
CY2018Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.56
CY2018Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.54
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.37
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.65
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.66
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.37
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.65
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.64
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.65

Files In Submission

Name	View Source	Status
0000930420-20-000033-index-headers.html	Edgar Link	pending
0000930420-20-000033-index.html	Edgar Link	pending
0000930420-20-000033.txt	Edgar Link	pending
0000930420-20-000033-xbrl.zip	Edgar Link	pending
descriptionofthecompan.htm	Edgar Link	pending
exhibit212019kforcesub.htm	Edgar Link	pending
exhibit232019consentof.htm	Edgar Link	pending
exhibit311q42019.htm	Edgar Link	pending
exhibit312q42019.htm	Edgar Link	pending
exhibit321q42019.htm	Edgar Link	pending
exhibit322q42019.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
kfrc-20191231.htm	Edgar Link	pending
kfrc-20191231.xsd	Edgar Link	pending
kfrc-20191231_cal.xml	Edgar Link	unprocessable
kfrc-20191231_def.xml	Edgar Link	unprocessable
kfrc-20191231_g1.jpg	Edgar Link	pending
kfrc-20191231_htm.xml	Edgar Link	completed
kfrc-20191231_lab.xml	Edgar Link	unprocessable
kfrc-20191231_pre.xml	Edgar Link	unprocessable
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$KFRC
KFORCE INC Stock $kfrc

2018 Q4 Form 10-K Financial Statement

#000093042020000033 Filed on February 21, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$KFRC KFORCE INC Stock $kfrc

2018 Q4 Form 10-K Financial Statement

#000093042020000033 Filed on February 21, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$KFRC
KFORCE INC Stock $kfrc