Credit Facility	12 Months Ended
Dec. 31, 2017
Debt Disclosure [Abstract]
Credit Facility	Credit Facility On May 25, 2017, the Firm entered into a credit agreement with Wells Fargo Bank, National Association, as administrative agent, Wells Fargo Securities, LLC, as lead arranger and bookrunner, Bank of America, N.A., as syndication agent, Regions Bank and BMO Harris Bank, N.A., as co-documentation agents, and the lenders referred to therein (the “Credit Facility”). In connection with entering into the Credit Facility, the Firm satisfied and terminated its previous credit facility in its entirety. Under the Credit Facility, the Firm will have a maximum borrowing capacity of $300.0 million, which may, subject to certain conditions and the participation of the lenders, be increased up to an aggregate additional amount of $150.0 million (the “Commitment”), which will be available to the Firm in the form of revolving credit loans, swingline loans, and letters of credit. Letters of credit and swingline loans under the Credit Facility are subject to sublimits of $10.0 million. The maturity date of the Credit Facility is May 25, 2022. Borrowings under the Credit Facility are secured by substantially all of the tangible and intangible assets of the Firm, excluding the Firm’s corporate headquarters and certain other designated executed collateral. Revolving credit loans under the Credit Facility will bear interest at a rate equal to: (a) the Base Rate (as described below) plus the Applicable Margin (as described below); or (b) the LIBOR Rate plus the Applicable Margin. Swingline loans under the Credit Facility will bear interest at a rate equal to the Base Rate plus the Applicable Margin. The Base Rate is the highest of: (i) the Wells Fargo Bank, National Association prime rate; (ii) the federal funds rate plus 0.50%; or (iii) one-month LIBOR plus 1.00%, and the LIBOR Rate is reserve-adjusted LIBOR for the applicable interest period, but not less than zero. The Applicable Margin is based on the Firm’s total leverage ratio. The Applicable Margin for Base Rate loans ranges from 0.25% to 0.75% and the Applicable Margin for LIBOR Rate loans ranges from 1.25% to 1.75%. The Firm will pay a quarterly non-refundable commitment fee equal to the Applicable Margin on the average daily unused portion of the Commitment (swingline loans do not constitute usage for this purpose). The Applicable Margin for the commitment fee is based on the Firm’s total leverage ratio and ranges between 0.20% and 0.35%. The Firm will continually be subject to certain affirmative and negative covenants including (but not limited to), the maintenance of a fixed charge coverage ratio of no less than 1.25 to 1.00 and the maintenance of a total leverage ratio of no greater than 3.25 to 1.00. The numerator in the fixed charge coverage ratio is defined pursuant to the Credit Facility as earnings before interest expense, income taxes, depreciation and amortization, stock-based compensation expense and other permitted items pursuant to our Credit Facility (disclosed as “Consolidated EBITDA”), less cash paid for capital expenditures, income taxes and dividends. The denominator is defined as Kforce’s fixed charges such as interest expense and principal payments paid or payable on outstanding debt other than borrowings under the Credit Facility. The total leverage ratio is defined pursuant to the Credit Facility as total indebtedness divided by Consolidated EBITDA. Our ability to make distributions or repurchases of equity securities could be limited if an event of default has occurred. Furthermore, our ability to repurchase equity securities could be limited if: (a) the total leverage ratio is greater than 2.75 to 1.00; and (b) the Firm’s availability, inclusive of unrestricted cash, is less than $25.0 million. At December 31, 2017, Kforce was not limited in making distributions and executing repurchases of its equity securities. As of December 31, 2017, $116.5 million was outstanding and $180.3 million was available under the Credit Facility, subject to the covenants described above. Kforce has $3.2 million of outstanding letters of credit at December 31, 2017 which, pursuant to the Credit Facility, reduce the availability. As of December 31, 2016, $111.5 million was outstanding under the previous credit facility.

Credit Facility

On May 25, 2017, the Firm entered into a credit agreement with Wells Fargo Bank, National Association, as administrative agent, Wells Fargo Securities, LLC, as lead arranger and bookrunner, Bank of America, N.A., as syndication agent, Regions Bank and BMO Harris Bank, N.A., as co-documentation agents, and the lenders referred to therein (the “Credit Facility”). In connection with entering into the Credit Facility, the Firm satisfied and terminated its previous credit facility in its entirety. Under the Credit Facility, the Firm will have a maximum borrowing capacity of $300.0 million, which may, subject to certain conditions and the participation of the lenders, be increased up to an aggregate additional amount of $150.0 million (the “Commitment”), which will be available to the Firm in the form of revolving credit loans, swingline loans, and letters of credit. Letters of credit and swingline loans under the Credit Facility are subject to sublimits of $10.0 million. The maturity date of the Credit Facility is May 25, 2022. Borrowings under the Credit Facility are secured by substantially all of the tangible and intangible assets of the Firm, excluding the Firm’s corporate headquarters and certain other designated executed collateral.

Revolving credit loans under the Credit Facility will bear interest at a rate equal to: (a) the Base Rate (as described below) plus the Applicable Margin (as described below); or (b) the LIBOR Rate plus the Applicable Margin. Swingline loans under the Credit Facility will bear interest at a rate equal to the Base Rate plus the Applicable Margin. The Base Rate is the highest of: (i) the Wells Fargo Bank, National Association prime rate; (ii) the federal funds rate plus 0.50%; or (iii) one-month LIBOR plus 1.00%, and the LIBOR Rate is reserve-adjusted LIBOR for the applicable interest period, but not less than zero. The Applicable Margin is based on the Firm’s total leverage ratio. The Applicable Margin for Base Rate loans ranges from 0.25% to 0.75% and the Applicable Margin for LIBOR Rate loans ranges from 1.25% to 1.75%. The Firm will pay a quarterly non-refundable commitment fee equal to the Applicable Margin on the average daily unused portion of the Commitment (swingline loans do not constitute usage for this purpose). The Applicable Margin for the commitment fee is based on the Firm’s total leverage ratio and ranges between 0.20% and 0.35%.

The Firm will continually be subject to certain affirmative and negative covenants including (but not limited to), the maintenance of a fixed charge coverage ratio of no less than 1.25 to 1.00 and the maintenance of a total leverage ratio of no greater than 3.25 to 1.00. The numerator in the fixed charge coverage ratio is defined pursuant to the Credit Facility as earnings before interest expense, income taxes, depreciation and amortization, stock-based compensation expense and other permitted items pursuant to our Credit Facility (disclosed as “Consolidated EBITDA”), less cash paid for capital expenditures, income taxes and dividends. The denominator is defined as Kforce’s fixed charges such as interest expense and principal payments paid or payable on outstanding debt other than borrowings under the Credit Facility. The total leverage ratio is defined pursuant to the Credit Facility as total indebtedness divided by Consolidated EBITDA. Our ability to make distributions or repurchases of equity securities could be limited if an event of default has occurred. Furthermore, our ability to repurchase equity securities could be limited if: (a) the total leverage ratio is greater than 2.75 to 1.00; and (b) the Firm’s availability, inclusive of unrestricted cash, is less than $25.0 million. At December 31, 2017, Kforce was not limited in making distributions and executing repurchases of its equity securities.

As of December 31, 2017, $116.5 million was outstanding and $180.3 million was available under the Credit Facility, subject to the covenants described above. Kforce has $3.2 million of outstanding letters of credit at December 31, 2017 which, pursuant to the Credit Facility, reduce the availability. As of December 31, 2016, $111.5 million was outstanding under the previous credit facility.