Summary of Significant Accounting Policies (Policies)	3 Months Ended
Mar. 31, 2023
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the SEC regarding interim financial reporting. Accordingly, certain information and footnotes normally required by GAAP for complete financial statements have been condensed or omitted pursuant to those rules and regulations, although management believes that the disclosures made are adequate to make the information not misleading. These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in our 2022 Annual Report on Form 10-K. In management’s opinion, the accompanying unaudited condensed consolidated financial statements reflect all adjustments considered necessary for a fair presentation. The Unaudited Condensed Consolidated Balance Sheet as of December 31, 2022, was derived from our audited Consolidated Balance Sheet as of December 31, 2022, as presented in our 2022 Annual Report on Form 10-K.
Principles of Consolidation	Principles of ConsolidationThe unaudited condensed consolidated financial statements include the accounts of Kforce Inc. and its subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. References in this document to “Kforce,” the “Company,” “we,” the “Firm,” “management,” “our” or “us” refer to Kforce Inc. and its subsidiaries, except where the context indicates otherwise.
Use of Estimates	Use of Estimates 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 credit losses; income taxes; self-insured liabilities for health insurance; and the impairment of goodwill and other long-lived assets. Although these and other estimates and assumptions are based on the best available information, actual results could be materially different from these estimates. Therefore, our accounting estimates and assumptions might change materially in future periods.
Health Insurance	Health Insurance Except for certain fully insured health insurance lines of coverage, Kforce retains the risk of loss per participant for each health insurance claim up to $600 thousand in claims annually. Additionally, for all claim amounts exceeding $600 thousand, Kforce retains the risk of loss up to an aggregate annual loss of those claims of $280 thousand. For its partially self-insured lines of coverage, health insurance costs are accrued using estimates to approximate the liability for reported claims and incurred but not reported claims, which are primarily based upon an evaluation of historical claims experience, completion factors determined by an actuary and a qualitative review of our health insurance exposure including the extent of outstanding claims and expected changes in health insurance costs.
Earnings per Share	Earnings per ShareBasic earnings per share is computed as net income divided by the weighted average number of common shares outstanding (“WASO”) during the period. WASO excludes unvested shares of restricted stock. Diluted earnings per share is computed by dividing net income by diluted WASO. Diluted WASO includes the dilutive effect of potentially dilutive securities such as unvested shares of restricted stock using the treasury stock method, except where the effect of including potential common shares would be anti-dilutive.
Equity Method Investment	Equity Method Investment and Note Receivable In June 2019, we entered into a joint venture whereby Kforce obtained a 50% noncontrolling interest in WorkLLama, which was accounted for as an equity method investment. As of December 31, 2022, the equity method investment was fully impaired. We recorded a loss related to our equity method investment of $0.8 million for each of the three months ended March 31, 2023 and 2022. During the year ended December 31, 2022, Kforce executed a series of promissory notes (the “Note Receivable”) to our joint venture for a total of $6.8 million and recorded a credit loss of $1.9 million, resulting in a balance of $4.8 million at December 31, 2022. There were no payments received on the Note Receivable during the year ended December 31, 2022. On February 23, 2023, Kforce received $6.0 million in exchange for the sale of our 50% noncontrolling interest in WorkLLama to an unaffiliated third party and in full settlement of the outstanding balance of the Note Receivable. These proceeds, net of customary transaction costs, amounted to $5.1 million and is presented in the investing section of the Unaudited Condensed Consolidated Statements of Cash Flows.
Receivable	Equity Method Investment and Note Receivable In June 2019, we entered into a joint venture whereby Kforce obtained a 50% noncontrolling interest in WorkLLama, which was accounted for as an equity method investment. As of December 31, 2022, the equity method investment was fully impaired. We recorded a loss related to our equity method investment of $0.8 million for each of the three months ended March 31, 2023 and 2022. During the year ended December 31, 2022, Kforce executed a series of promissory notes (the “Note Receivable”) to our joint venture for a total of $6.8 million and recorded a credit loss of $1.9 million, resulting in a balance of $4.8 million at December 31, 2022. There were no payments received on the Note Receivable during the year ended December 31, 2022. On February 23, 2023, Kforce received $6.0 million in exchange for the sale of our 50% noncontrolling interest in WorkLLama to an unaffiliated third party and in full settlement of the outstanding balance of the Note Receivable. These proceeds, net of customary transaction costs, amounted to $5.1 million and is presented in the investing section of the Unaudited Condensed Consolidated Statements of Cash Flows.
Excise Tax	Excise Tax On August 16, 2022, the Inflation Reduction Act of 2022 (the “IRA”) was signed into Federal law. The IRA provides for, among other things, a new U.S. Federal 1% nondeductible excise tax on certain repurchases of stock by publicly-traded U.S. domestic corporations occurring after December 31, 2022. The excise tax is imposed on the repurchasing corporation itself, not its shareholders from which shares are repurchased. The amount of the excise tax is generally 1% of the fair market value of the shares repurchased at the time of the repurchase. However, for purposes of calculating the excise tax, repurchasing corporations are permitted to net the fair market value of certain stock issuances against the fair market value of stock repurchases during the same taxable year, with certain exceptions. For the three months ended March 31, 2023, we recorded $0.1 million in excise tax related to the IRA, which was included in Treasury stock in the unaudited condensed consolidated financial statements.
New Accounting Standards	New Accounting Standards Recently Adopted Accounting Standards In March 2020, the FASB issued guidance for reference rate reform, which provided temporary optional guidance to ease the potential burden in accounting for reference rate reform in contracts and other transactions that reference LIBOR, or another reference rate expected to be discontinued because of reference rate reform, if certain criteria are met. The FASB has since issued subsequent updates to the initial guidance in December 2022, which extends the final sunset date for reference rate reform from December 31, 2022 to December 31, 2024. We adopted this standard as of January 1, 2023 and do not expect it to have a material impact on our consolidated financial statements.

Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2023

The unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the SEC regarding interim financial reporting. Accordingly, certain information and footnotes normally required by GAAP for complete financial statements have been condensed or omitted pursuant to those rules and regulations, although management believes that the disclosures made are adequate to make the information not misleading. These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in our 2022 Annual Report on Form 10-K. In management’s opinion, the accompanying unaudited condensed consolidated financial statements reflect all adjustments considered necessary for a fair presentation. The Unaudited Condensed Consolidated Balance Sheet as of December 31, 2022, was derived from our audited Consolidated Balance Sheet as of December 31, 2022, as presented in our 2022 Annual Report on Form 10-K.

Principles of Consolidation

Principles of ConsolidationThe unaudited condensed consolidated financial statements include the accounts of Kforce Inc. and its subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. References in this document to “Kforce,” the “Company,” “we,” the “Firm,” “management,” “our” or “us” refer to Kforce Inc. and its subsidiaries, except where the context indicates otherwise.

Use of Estimates

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 credit losses; income taxes; self-insured liabilities for health insurance; and the impairment of goodwill and other long-lived assets. Although these and other estimates and assumptions are based on the best available information, actual results could be materially different from these estimates. Therefore, our accounting estimates and assumptions might change materially in future periods.

Health Insurance

Except for certain fully insured health insurance lines of coverage, Kforce retains the risk of loss per participant for each health insurance claim up to $600 thousand in claims annually. Additionally, for all claim amounts exceeding $600 thousand, Kforce retains the risk of loss up to an aggregate annual loss of those claims of $280 thousand. For its partially self-insured lines of coverage, health insurance costs are accrued using estimates to approximate the liability for reported claims and incurred but not reported claims, which are primarily based upon an evaluation of historical claims experience, completion factors determined by an actuary and a qualitative review of our health insurance exposure including the extent of outstanding claims and expected changes in health insurance costs.

Earnings per Share

Earnings per ShareBasic earnings per share is computed as net income divided by the weighted average number of common shares outstanding (“WASO”) during the period. WASO excludes unvested shares of restricted stock. Diluted earnings per share is computed by dividing net income by diluted WASO. Diluted WASO includes the dilutive effect of potentially dilutive securities such as unvested shares of restricted stock using the treasury stock method, except where the effect of including potential common shares would be anti-dilutive.

Equity Method Investment

Equity Method Investment and Note Receivable

In June 2019, we entered into a joint venture whereby Kforce obtained a 50% noncontrolling interest in WorkLLama, which was accounted for as an equity method investment. As of December 31, 2022, the equity method investment was fully impaired. We recorded a loss related to our equity method investment of $0.8 million for each of the three months ended March 31, 2023 and 2022. During the year ended December 31, 2022, Kforce executed a series of promissory notes (the “Note Receivable”) to our joint venture for a total of $6.8 million and recorded a credit loss of $1.9 million, resulting in a balance of $4.8 million at December 31, 2022. There were no payments received on the Note Receivable during the year ended December 31, 2022.

On February 23, 2023, Kforce received $6.0 million in exchange for the sale of our 50% noncontrolling interest in WorkLLama to an unaffiliated third party and in full settlement of the outstanding balance of the Note Receivable. These proceeds, net of customary transaction costs, amounted to $5.1 million and is presented in the investing section of the Unaudited Condensed Consolidated Statements of Cash Flows.

Receivable

Equity Method Investment and Note Receivable

Excise Tax

On August 16, 2022, the Inflation Reduction Act of 2022 (the “IRA”) was signed into Federal law. The IRA provides for, among other things, a new U.S. Federal 1% nondeductible excise tax on certain repurchases of stock by publicly-traded U.S. domestic corporations occurring after December 31, 2022. The excise tax is imposed on the repurchasing corporation itself, not its shareholders from which shares are repurchased. The amount of the excise tax is generally 1% of the fair market value of the shares repurchased at the time of the repurchase. However, for purposes of calculating the excise tax, repurchasing corporations are permitted to net the fair market value of certain stock issuances against the fair market value of stock repurchases during the same taxable year, with certain exceptions. For the three months ended March 31, 2023, we recorded $0.1 million in excise tax related to the IRA, which was included in Treasury stock in the unaudited condensed consolidated financial statements.

New Accounting Standards

Recently Adopted Accounting Standards

In March 2020, the FASB issued guidance for reference rate reform, which provided temporary optional guidance to ease the potential burden in accounting for reference rate reform in contracts and other transactions that reference LIBOR, or another reference rate expected to be discontinued because of reference rate reform, if certain criteria are met. The FASB has since issued subsequent updates to the initial guidance in December 2022, which extends the final sunset date for reference rate reform from December 31, 2022 to December 31, 2024. We adopted this standard as of January 1, 2023 and do not expect it to have a material impact on our consolidated financial statements.