Kforce (KFRC) 10-K 27 Feb 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Feb. 24, 2014	Jun. 28, 2013
Document And Entity Information [Abstract]	'	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Entity Registrant Name	'KFORCE INC	'	'
Entity Central Index Key	'0000930420	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Filer Category	'Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	33,888,957	'
Entity Public Float	'	'	$382,638,228

Consolidated_Statements_of_Ope

Consolidated Statements of Operations and Comprehensive Income (Loss) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement [Abstract]	'	'	'
Net service revenues	$1,151,887	$1,082,479	$1,004,747
Direct costs of services	782,275	734,546	687,000
Gross profit	369,612	347,933	317,747
Selling, general and administrative expenses	323,933	322,436	274,072
Goodwill impairment	14,510	69,158	'
Depreciation and amortization	9,846	10,789	12,505
Income (loss) from operations	21,323	-54,450	31,170
Other (income) expense:	'	'	'
Interest expense	1,302	1,009	1,196
Other (income) expense	-77	107	60
Income (loss) from continuing operations, before income taxes	20,098	-55,566	29,914
Income tax expense (benefit)	9,311	-19,854	10,858
Income (loss) from continuing operations	10,787	-35,712	19,056
Income from discontinued operations, net of income taxes	'	22,009	8,100
Net income (loss)	10,787	-13,703	27,156
Other comprehensive income (loss):	'	'	'
Defined benefit pension and postretirement plans, net of tax	3,030	1,337	-2,570
Comprehensive income (loss)	$13,817	($12,366)	$24,586
Earnings (loss) per share - basic:	'	'	'
From continuing operations	$0.32	($1)	$0.50
From discontinued operations	'	$0.62	$0.22
Earnings (loss) per share - basic	$0.32	($0.38)	$0.72
Earnings (loss) per share - diluted	'	'	'
From continuing operations	$0.32	($1)	$0.49
From discontinued operations	'	$0.62	$0.21
Earnings (loss) per share - diluted	$0.32	($0.38)	$0.70
Weighted average shares outstanding - basic	33,511	35,791	37,835
Weighted average shares outstanding - diluted	33,643	35,791	38,831

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current Assets:	'	'
Cash and cash equivalents	$875	$1,381
Trade receivables, net of allowances of $2,028 and $2,153, respectively	179,095	151,570
Income tax refund receivable	7,720	1,750
Deferred tax assets, net	4,662	9,494
Prepaid expenses and other current assets	10,534	7,364
Total current assets	202,886	171,559
Fixed assets, net	36,728	34,883
Other assets, net	30,991	28,038
Deferred tax assets, net	23,270	21,523
Intangible assets, net	4,993	5,736
Goodwill	48,900	63,410
Total assets	347,768	325,149
Current Liabilities:	'	'
Accounts payable and other accrued liabilities	31,821	36,205
Accrued payroll costs	56,872	50,063
Other current liabilities	1,141	11,564
Income taxes payable	139	1,042
Total current liabilities	89,973	98,874
Long-term debt - credit facility	62,642	21,000
Long-term debt - other	1,364	1,144
Other long-term liabilities	36,556	34,285
Total liabilities	190,535	155,303
Commitments and contingencies (see Note 16)	'	'
Stockholders' Equity:	'	'
Preferred stock, $0.01 par; 15,000 shares authorized, none issued and outstanding	'	'
Common stock, $0.01 par; 250,000 shares authorized, 69,480 and 68,531 issued, respectively	695	685
Additional paid-in capital	404,600	400,688
Accumulated other comprehensive loss	317	-2,713
Retained earnings	47,612	40,203
Treasury stock, at cost; 35,751 and 33,980 shares, respectively	-295,991	-269,017
Total stockholders' equity	157,233	169,846
Total liabilities and stockholders' equity	$347,768	$325,149

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Per Share data, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Trade receivables, allowances	$2,028	$2,153
Preferred stock, par value	$0.01	$0.01
Preferred stock, shares authorized	15,000	15,000
Preferred stock, shares issued	'	'
Preferred stock, shares outstanding	'	'
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	250,000	250,000
Common stock, shares issued	69,480	68,531
Treasury stock, shares	35,751	33,980

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders' Equity (USD $)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Treasury Stock [Member]
In Thousands
Balance at beginning of period at Dec. 31, 2010	'	$665	$355,869	($1,480)	$61,979	($163,216)
Shares at beginning of period at Dec. 31, 2010	'	66,542	'	'	'	24,823
Repurchases of common stock, shares	'	'	'	'	'	5,746
Issuance of restricted stock, net of forfeitures, shares	'	1,604	'	'	'	'
Shares tendered in payment of the exercise price of stock options, shares	'	'	'	'	'	131
Exercise of stock options and stock appreciation rights, shares	'	420	'	'	'	'
Employee stock purchase plan, shares	-56	'	'	'	'	-56
Repurchases of common stock	'	'	'	'	'	-59,643
Issuance of restricted stock, net of forfeitures	'	16	-16	'	'	'
Net income (loss)	27,156	'	'	'	27,156	'
Pension and postretirement plans, net of tax of $1,919, $854 and $1,532, respectively	-2,570	'	'	-2,570	'	'
Shares tendered in payment of the exercise price of stock options	'	'	'	'	'	-2,401
Exercise of stock options and stock appreciation rights	'	5	2,854	'	'	'
Income tax benefit from stock-based compensation	'	'	1,216	'	'	'
Stock-based compensation expense	'	'	11,976	'	'	'
Employee stock purchase plan	705	'	313	'	'	392
Balance at end of period at Dec. 31, 2011	'	686	372,212	-4,050	89,135	-224,868
Shares at end of period at Dec. 31, 2011	'	68,566	'	'	'	30,644
Repurchases of common stock, shares	'	'	'	'	'	3,376
Issuance of restricted stock, net of forfeitures, shares	'	-105	'	'	'	'
Shares tendered in payment of the exercise price of stock options, shares	'	'	'	'	'	11
Exercise of stock options and stock appreciation rights, shares	'	70	'	'	'	'
Employee stock purchase plan, shares	-51	'	'	'	'	-51
Repurchases of common stock	'	'	'	'	'	-44,375
Issuance of restricted stock, net of forfeitures	'	-1	36	'	'	'
Net income (loss)	-13,703	'	'	'	-13,703	'
Pension and postretirement plans, net of tax of $1,919, $854 and $1,532, respectively	1,337	'	'	1,337	'	'
Shares tendered in payment of the exercise price of stock options	'	'	'	'	'	-161
Exercise of stock options and stock appreciation rights	'	'	736	'	'	'
Dividend ($0.10, $1.00 and $0.00 per share, respectively)	'	'	'	'	-35,229	'
Income tax benefit from stock-based compensation	'	'	1,201	'	'	'
Stock-based compensation expense	'	'	26,243	'	'	'
Employee stock purchase plan	647	'	260	'	'	387
Balance at end of period at Dec. 31, 2012	169,846	685	400,688	-2,713	40,203	-269,017
Shares at end of period at Dec. 31, 2012	'	68,531	'	'	'	33,980
Repurchases of common stock, shares	'	'	'	'	'	1,812
Issuance of restricted stock, net of forfeitures, shares	'	882	'	'	'	'
Exercise of stock options and stock appreciation rights, shares	'	67	'	'	'	'
Employee stock purchase plan, shares	-41	'	'	'	'	-41
Repurchases of common stock	'	'	'	'	'	-27,313
Issuance of restricted stock, net of forfeitures	'	9	72	'	'	'
Net income (loss)	10,787	'	'	'	10,787	'
Pension and postretirement plans, net of tax of $1,919, $854 and $1,532, respectively	3,030	'	'	3,030	'	'
Exercise of stock options and stock appreciation rights	'	1	597	'	'	'
Dividend ($0.10, $1.00 and $0.00 per share, respectively)	'	'	'	'	-3,378	'
Income tax benefit from stock-based compensation	'	'	399	'	'	'
Stock-based compensation expense	'	'	2,570	'	'	'
Employee stock purchase plan	613	'	274	'	'	339
Balance at end of period at Dec. 31, 2013	$157,233	$695	$404,600	$317	$47,612	($295,991)
Shares at end of period at Dec. 31, 2013	'	69,480	'	'	'	35,751

Consolidated_Statements_of_Sto1

Consolidated Statements of Stockholders' Equity (Parenthetical) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Dividend	$0.10	$1	'
Accumulated Other Comprehensive Income (Loss) [Member]	'	'	'
Pension and postretirement plans, net of tax	$1,919	$854	$1,532
Retained Earnings [Member]	'	'	'
Dividend	$0.10	$1	$0

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:	'	'	'
Net income (loss)	$10,787	($13,703)	$27,156
Adjustments to reconcile net income (loss) to cash provided by (used in) operating activities:	'	'	'
Gain on sale of discontinued operations	'	-36,418	'
Goodwill and intangible asset impairment	14,510	69,158	'
Deferred income tax (benefit) provision, net	1,166	-17,136	653
Provision for (recovery of) bad debts on accounts receivable and other accounts receivable reserves	546	1,860	-925
Depreciation and amortization	9,846	10,862	12,694
Stock-based compensation	2,570	25,740	11,976
Pension and postretirement benefit plans expense	3,237	4,505	4,369
Amortization of deferred financing costs	90	92	139
Tax benefit attributable to stock-based compensation	399	1,201	1,216
Excess tax benefit attributable to stock-based compensation	-110	-1,130	-878
Deferred compensation liability increase (decrease), net	3,994	2,111	-634
(Gain) loss on cash surrender value of Company-owned life insurance	-3,690	-1,797	1,733
Other	257	55	251
(Increase) decrease in operating assets, net of acquisitions:	'	'	'
Trade receivables, net	-28,071	4,298	-25,332
Income tax refund receivable	-5,970	-1,500	5,425
Prepaid expenses and other current assets	-3,170	-2,246	-380
Other assets, net	-57	244	75
Increase (decrease) in operating liabilities, net of acquisitions:	'	'	'
Accounts payable and other current liabilities	-12,471	10,913	-4,576
Accrued payroll costs	7,422	-241	1,395
Income taxes payable	-903	807	-15
Other long-term liabilities	83	-1,697	-3,102
Cash provided by operating activities	465	55,978	31,240
Cash flows from investing activities:	'	'	'
Capital expenditures	-8,145	-5,846	-6,495
Proceeds from disposition of business, net of cash	'	55,446	'
Proceeds from the sale of assets held within the Rabbi Trust	3,278	4,259	'
Purchase of assets held within the Rabbi Trust	-3,697	-1,460	-3,440
Other	17	6	-155
Cash (used in) provided by investing activities	-8,547	52,405	-10,090
Cash flows from financing activities:	'	'	'
Proceeds from bank line of credit	591,688	241,973	488,468
Payments on bank line of credit	-550,081	-270,499	-449,767
Payments of capital expenditure financing	-1,452	-1,802	-1,497
Payments of deferred loan financing costs	'	'	-450
Short-term vendor financing	-180	253	287
Proceeds from exercise of stock options	598	575	458
Excess tax benefit attributable to stock-based compensation	110	1,130	878
Repurchases of common stock	-29,810	-44,375	-59,643
Cash dividend	-3,297	-35,196	'
Cash provided by (used in) financing activities	7,576	-107,941	-21,266
Change in cash and cash equivalents	-506	442	-116
Cash and cash equivalents at beginning of year	1,381	939	1,055
Cash and cash equivalents at end of year	$875	$1,381	$939

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies	'
	1. Summary of Significant Accounting Policies
	Organization and Nature of Operations
	Kforce Inc. and subsidiaries (collectively, “Kforce”) provide professional staffing services and solutions to customers in the following segments: Technology (“Tech”), Finance and Accounting (“FA”), Health Information Management (“HIM”) and Government Solutions (“GS”). Kforce provides flexible staffing services and solutions on both a temporary and full-time basis. Kforce operates through its corporate headquarters in Tampa, Florida and 62 field offices located throughout the United States (the “U.S.”). Additionally, one of our subsidiaries, Kforce Global Solutions, Inc. (“Global”), provides information technology outsourcing services internationally through an office in Manila, Philippines. Our international operations comprised approximately 2% of net service revenues for each of the three years ended December 31, 2013 and are included in our Tech segment.
	Kforce serves clients from the Fortune 1000, the Federal Government, state and local governments, local and regional companies and small to mid-sized companies.
	Basis of Presentation
	The consolidated financial statements of Kforce have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”) and the rules of the Securities and Exchange Commission (“SEC”).
	Principles of Consolidation
	The consolidated financial statements include the accounts of Kforce Inc. and its wholly-owned subsidiaries. References in this document to “Kforce,” “the Company,” “we,” “our” or “us” refer to Kforce Inc. and its subsidiaries, except where the context indicates otherwise. All intercompany transactions and balances have been eliminated in consolidation.
	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 important of these estimates and assumptions relate to the following: accounting for goodwill and identifiable intangible assets and any related impairment; stock-based compensation; obligations for pension and postretirement benefit plans; self-insured liabilities for workers’ compensation and health insurance; allowance for doubtful accounts, fallouts and other accounts receivable reserves and accounting for income taxes. Although these and other estimates and assumptions are based on the best available information, actual results could be materially different from these estimates.
	Cash and Cash Equivalents
	Kforce classifies all highly liquid investments with an original initial maturity of three months or less as cash equivalents. Cash and cash equivalents consist of cash on hand with banks, either in commercial accounts, or overnight interest-bearing money market accounts and at times may exceed federally insured limits. Cash and cash equivalents are stated at cost, which approximates fair value due to the short duration of their maturities.
	Accounts Receivable Reserves
	Kforce establishes its reserves for expected credit losses, fallouts, early payment discounts and revenue adjustments based on past experience and estimates of potential future activity. Specific to our allowance for doubtful accounts, which comprises a majority of our accounts receivable reserves, Kforce performs an ongoing analysis of factors including recent write-off and delinquency trends, a specific analysis of significant receivable balances that are past due, the concentration of accounts receivable among clients and higher-risk sectors, and the current state of the U.S. economy. Trade receivables are written off by Kforce after all reasonable collection efforts have been exhausted.
	Accounts receivable reserves as a percentage of gross accounts receivable was 1.1% and 1.4% as of December 31, 2013 and December 31, 2012, respectively.
	Revenue Recognition
	We earn revenues from two primary sources: Flexible billings and Search fees. Flexible billings are recognized as the services are provided by Kforce’s temporary employees, who are Kforce’s legal employees while they are working on assignments. Kforce pays all related costs of such employment, including workers’ compensation insurance, state and federal unemployment taxes, social security and certain fringe benefits. Search fees are recognized by Kforce when employment candidates accept offers of permanent employment and are scheduled to commence employment within 30 days. Kforce records revenues net of an estimated reserve for “fallouts,” which is based on Kforce’s historical fallout experience. Fallouts occur when a candidate does not remain employed with the client through the contingency period, which is typically 90 days or less.
	Net service revenues represent services rendered to customers less credits, discounts, rebates and allowances. Revenues include reimbursements of travel and out-of-pocket expenses (“billable expenses”) with equivalent amounts of expense recorded in direct costs of services.
	Our GS segment generates its revenues under contracts that are, in general, greater in duration than our other segments and which can often span several years, inclusive of renewal periods. In addition, our GS segment generates substantially all of its revenues under time-and-materials (which account for the majority of this segment’s contracts), fixed-price and cost-plus arrangements. Our GS segment does not generate any Search fees. Except as provided below, Kforce considers amounts to be earned once evidence of an arrangement has been obtained, services are delivered, fees are fixed or determinable, and collectability is reasonably assured.
		•		Revenues for time-and-materials contracts, which accounts for approximately 73% of this segment’s revenue, are recorded based on contractually established billing rates at the time services are provided.
		•		Revenues on fixed-price contracts are recognized on the basis of the estimated percentage-of-completion. Approximately 15% of this segment’s revenues are recognized under this method. Progress towards completion is typically measured based on costs incurred as a proportion of estimated total costs or other measures of progress when applicable. Profit in a given period is reported at the expected profit margin to be achieved on the overall contract.
		•		Revenue on cost-plus arrangements is recognized based on allowable costs incurred plus an estimate of the applicable fees earned. Approximately 12% of this segment’s revenues are recognized under these arrangements.
	Direct Costs of Services
	Direct costs of services are composed primarily of payroll wages, payroll taxes, payroll-related insurance for Kforce’s flexible employees, and subcontractor costs. Direct costs of permanent placement services primarily consist of reimbursable expenses. Direct costs of services exclude depreciation and amortization expense, which is presented on a separate line in the accompanying consolidated statements of operations and comprehensive income (loss).
	Income Taxes
	Kforce accounts for income taxes using the asset and liability approach to the recognition of deferred tax assets and liabilities for the expected future tax consequences of differences between the financial statement carrying amounts and the tax basis of assets and liabilities. Unless it is “more likely than not” that a deferred tax asset can be utilized to offset future taxes, a valuation allowance is recorded against that asset. The tax benefits of deductions attributable to employees’ disqualifying dispositions of shares obtained from incentive stock options, exercises of non-qualified stock options, and vesting of restricted stock are reflected as increases in additional paid-in capital.
	Kforce evaluates tax positions that have been taken or are expected to be taken in its tax returns, and records a liability for uncertain tax positions. Kforce uses a two-step approach to recognize and measure uncertain tax positions. First, tax positions are recognized if the weight of available evidence indicates that it is more likely than not that the position will be sustained upon examination, including resolution of related appeals or litigation processes, if any. Second, tax positions are measured as the largest amount of tax benefit that has a greater than 50% likelihood of being realized upon settlement. Kforce recognizes interest and penalties related to unrecognized tax benefits in the provision for income taxes in the accompanying consolidated financial statements.
	Fair Value Measurements
	Kforce uses the framework established by the Financial Accounting Standards Board (“FASB”) for measuring fair value and disclosures about fair value measurements. Kforce uses fair value measurements in areas that include, but are not limited to: the impairment testing of goodwill and long-lived assets; share-based compensation arrangements; valuing the investment in bond mutual funds within the Kforce’s deferred compensation plan; our debt and capital lease obligations. The carrying values of cash and cash equivalents, accounts receivable, accounts payable, and other current assets and liabilities approximate fair value because of the short-term nature of these instruments. Using available market information and appropriate valuation methodologies, Kforce has determined the estimated fair value measurements; however, considerable judgment is required in interpreting data to develop the estimates of fair value.
	Fixed Assets
	Fixed assets are carried at cost, less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the assets. The cost of leasehold improvements is amortized using the straight-line method over the shorter of the estimated useful lives of the assets or the terms of the related leases, which generally range from three to five years.
	Goodwill and Other Intangible Assets
	Goodwill
	Kforce performs a goodwill impairment analysis, using the two-step analysis method, on an annual basis and whenever events or changes in circumstances indicate that the carrying value may not be recoverable unless it is determined, based upon a review of the qualitative factors of a reporting unit, that it is more likely than not that the fair value of a reporting unit exceeds its carrying amount, including goodwill. Under the two-step analysis method, the recoverability of goodwill is measured at the reporting unit level, which Kforce has determined to be consistent with its operating segments; by comparing the reporting unit’s carrying amount, including goodwill, to the fair market value of the reporting unit. Kforce determines the fair market value of its reporting units based on a weighting of the present value of projected future cash flows (the “income approach”) and the use of comparative market approach under both the guideline company method and guideline transaction method (collectively, the “market approach”). Fair market value using the income approach is based on Kforce’s estimated future cash flows on a discounted basis. The market approach compares each of Kforce’s reporting units to other comparable companies based on valuation multiples derived from operational and transactional data to arrive at a fair value. Factors requiring significant judgment include, among others, the determination of comparable companies, assumptions related to forecasted operating results, discount rates, long-term growth rates, and market multiples. Changes in economic or operating conditions, or changes in Kforce’s business strategies, that occur after the annual impairment analysis and which impact these assumptions, may result in a future goodwill impairment charge, which could be material to Kforce’s consolidated financial statements.
	Other Intangible Assets
	Identifiable intangible assets arising from certain of Kforce’s acquisitions include non-compete and employment agreements, contractual relationships, customer contracts, and a trade name and trademark. For definite-lived intangible assets, Kforce has determined that the straight-line method is an appropriate methodology to allocate the cost over the period of expected benefit, which ranges from one to 15 years. The impairment evaluation for indefinite-lived intangible assets, which for Kforce consist of a trademark and trade name, is conducted on an annual basis or more frequently if events or changes in circumstances indicate that an asset may be impaired.
	Impairment of Long-Lived Assets
	Kforce reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. Recoverability of long-lived assets is measured by a comparison of the carrying amount of the asset group to the future undiscounted net cash flows expected to be generated by those assets. If such assets are considered to be impaired, the impairment charge recognized is the amount by which the carrying amounts of the assets exceed the fair value of the assets, as determined based on the present value of projected future cash flows.
	Capitalized Software
	Kforce purchases, develops, and implements new computer software to enhance the performance of our Company-wide technology infrastructure. Direct internal costs, such as payroll and payroll-related costs, and external costs incurred during the development stage of each project, are capitalized and classified as capitalized software. Kforce capitalized development-stage implementation costs of $970, $1,718 and $2,876 during the years ended December 31, 2013, 2012 and 2011, respectively. Capitalized software development costs are classified as other assets, net in the accompanying consolidated balance sheets and are being amortized over the estimated useful lives of the software, which range from one to five years, using the straight-line method.
	Commissions
	Our associates make placements and earn commissions as a percentage of actual revenues (for Search revenue) or gross profit (for Flex revenue) pursuant to a calendar-year-basis commission plan. The amount of commissions paid as a percentage of revenues or gross profit increases as volume increases. Kforce accrues commissions for actual revenues or gross profit at a percentage equal to the percent of total expected commissions payable to total revenues or gross profit for the year, as applicable.
	Stock-Based Compensation
	Kforce accounts for stock-based compensation by measuring the cost of employee services received in exchange for an award of equity instruments based on the grant-date fair value of the award. The cost is recognized over the requisite service period, net of estimated forfeitures. If the actual number of forfeitures differs from those estimated, additional adjustments to compensation expense may be required in future periods.
	Workers’ Compensation
	Kforce retains the economic burden for the first $250 per occurrence in workers’ compensation claims except: (i) in states that require participation in state-operated insurance funds and (ii) for its GS segment which is fully insured for workers’ compensation claims. Workers’ compensation includes ongoing health care and indemnity coverage for claims and may be paid over numerous years following the date of injury. Workers’ compensation expense includes insurance premiums paid, claims administration fees charged by Kforce’s workers’ compensation administrator, premiums paid to state-operated insurance funds and an estimate for Kforce’s liability for Incurred but Not Reported (“IBNR”) claims and for the ongoing development of existing claims.
	Kforce estimates its workers’ compensation liability based upon historical claims experience, actuarially determined loss development factors, and qualitative considerations such as claims management activities.
	Taxes Assessed by Governmental Agencies – Revenue Producing Transactions
	Kforce collects sales tax for various taxing authorities and it is our policy to record these amounts on a net basis; thus, sales tax amounts are not included in net service revenues.
	Health Insurance
	Except for certain fully insured health insurance lines of coverage, Kforce retains the risk of loss for each health insurance plan participant up to $275 in claims annually. Additionally, for all claim amounts exceeding $275, Kforce retains the risk of loss up to an aggregate annual loss of those claims of $500. For its partially self-insured lines of coverage, health insurance costs are accrued using estimates to approximate the liability for reported claims and IBNR claims, which are primarily based upon an evaluation of historical claims experience, actuarially-determined completion factors and a qualitative review of our health insurance exposure including the extent of outstanding claims and expected changes in health insurance costs.
	Accounting for Postretirement Benefits
	Kforce recognizes the overfunded or underfunded status of its defined benefit postretirement plans as an asset or liability in its consolidated balance sheets and recognizes changes in that funded status in the year in which the changes occur through other comprehensive income (loss). Kforce also measures the funded status of the defined benefit postretirement plans as of the date of its fiscal year-end, with limited exceptions.
	Amortization of a net unrecognized gain or loss in accumulated other comprehensive income (loss) is included as a component of net periodic benefit cost and net periodic postretirement benefit cost if, as of the beginning of the year, that net gain or loss exceeds 10% of the greater of the projected benefit obligation or accumulated postretirement benefit obligation. If amortization is required, the minimum amortization shall be that excess divided by the average remaining service period of active plan participants.
	Earnings per Share
	Basic earnings (loss) per share is computed as earnings (loss) divided by the weighted average number of common shares outstanding during the period. Basic weighted average shares outstanding excludes unvested shares of restricted stock. Diluted earnings (loss) per common share is computed by dividing the earnings (loss) attributable to common shareholders for the period by the weighted average number of common shares outstanding during the period plus the dilutive effect of stock options and other 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. Weighted average shares outstanding for purposes of computing diluted earnings per common share excludes contingently issuable unvested restricted stock unless the performance condition has been achieved as of the end of the applicable reporting period.
	The following table sets forth the computation of basic and diluted earnings (loss) per share for the three years ended December 31, 2013:
			Years Ended December 31,
			2013		2012			2011
	Numerator:
	Income (loss) from continuing operations		$	10,787	$	(35,712	)	$	19,056
	Income from discontinued operations, net of tax			—		22,009			8,100
	Net income (loss)		$	10,787	$	(13,703	)	$	27,156
Denominator:
Weighted average shares outstanding – basic			33,511		35,791			37,835
Common stock equivalents			132		—			996
Weighted average shares outstanding – diluted			33,643		35,791			38,831
Earnings (loss) per share – basic:
From continuing operations		$	0.32	$	(1.00	)	$	0.5
From discontinued operations			—		0.62			0.22
Earnings (loss) per share – basic		$	0.32	$	(0.38	)	$	0.72
Earnings (loss) per share – diluted:
From continuing operations		$	0.32	$	(1.00	)	$	0.49
From discontinued operations			—		0.62			0.21
Earnings (loss) per share – diluted		$	0.32	$	(0.38	)	$	0.7
For the year ended December 31, 2011, the total weighted average awards to purchase or receive 33 shares of common stock was not included in the computation of diluted earnings per share, because these would have had an anti-dilutive effect on earnings per share. Given that Kforce had a loss from continuing operations for the year ended December 31, 2012, the calculation of diluted loss per share from continuing operations, earnings from discontinued operations, and net loss is computed using basic weighted average common shares outstanding. For the year ended December 31, 2013, there were no shares of common stock excluded from the computation of diluted earnings per share.
Treasury Stock
Kforce’s Board of Directors (“Board”) may authorize share repurchases of Kforce’s common stock. Shares repurchased under Board authorizations are held in treasury for general corporate purposes, including issuances under various employee share-based award plans. Treasury shares are accounted for under the cost method and reported as a reduction of stockholders’ equity in the accompanying consolidated financial statements.
Comprehensive Income (Loss)
Accumulated other comprehensive income (loss) represents the net after-tax impact of unrecognized actuarial gains and losses related to: (i) the supplemental executive retirement plan and supplemental executive retirement health plan, both of which cover a limited number of executives and (ii) a defined benefit plan covering all eligible employees in our Philippine operations. Because each of these plans is unfunded as of December 31, 2013, the actuarial gains and losses arise as a result of the actuarial experience of the plans as well as changes in actuarial assumptions in measuring the associated obligation as of year-end, or an interim date if any re-measurement is necessary. This information is provided in our consolidated statements of operations and comprehensive income (loss).
Dividends
Kforce’s Board may, at its discretion, declare and pay dividends on the outstanding shares of Kforce’s common stock out of retained earnings, subject to statutory requirements. Dividends for any outstanding and unvested restricted stock as of the record date are awarded in the form of additional shares of restricted stock, at the same rate as the cash dividend on common stock and based on the closing stock price, and have the same vesting terms as the outstanding and unvested restricted stock. The following summarizes the cash dividends declared for the three years ended December 31:
		YEARS ENDED DECEMBER 31,
		2013		2012			2011
Cash dividends declared per share		$	0.1	$	1			—
Kforce currently expects to continue to declare and pay quarterly dividends of an amount similar to its December 2013 dividend of $0.10 per share. However, the declaration and payment of future dividends are discretionary and will be subject to determination by Kforce’s Board of Directors each quarter following its review of the Firm’s financial performance.
New Accounting Standards
In July 2013, the FASB issued authoritative guidance regarding presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. This guidance is to be applied for annual reporting periods beginning on or after December 15, 2013 and interim periods within those annual periods. Kforce does not expect the adoption of this guidance to have a material impact on its future consolidated financial statements.

Discontinued_Operations

Discontinued Operations	12 Months Ended
	Dec. 31, 2013
Discontinued Operations And Disposal Groups [Abstract]	'
Discontinued Operations	'
	2. Discontinued Operations
	On March 17, 2012, Kforce entered into a Stock Purchase Agreement (the “SPA”) to sell all of the issued and outstanding stock of Kforce Clinical Research, Inc. (“KCR”) to inVentiv Health, Inc. (“Purchaser”). On March 31, 2012 (“Closing Date”), the Firm closed the sale of KCR to the Purchaser for a total cash purchase price of $57,335, after giving effect to a $7,335 post-closing working capital adjustment.
	In connection with the closing of the sale, Kforce entered into a Transition Services Agreement (“TSA”) with the Purchaser to provide certain post-closing transitional services for a period not to exceed 18 months from the Closing Date. Services provided by Kforce under the TSA ceased during the three months ended June 30, 2013.The fees for a significant majority of these services were generally equivalent to Kforce’s cost.
	In accordance with the SPA, Kforce was obligated to indemnify the Purchaser for certain losses, as defined, in excess of $375 although this deductible did not apply to certain losses. Kforce’s obligations under the indemnification provisions of the SPA, with the exception of certain items, ceased 18 months from the Closing Date and were limited to an aggregate of $5,000 although this cap did not apply to certain losses. While it cannot be certain, Kforce believes any exposure under the indemnification provisions is remote, particularly given that the 18 month time period for general indemnification claims has now passed, and, as a result, Kforce has not recorded a liability as of December 31, 2013.
	The financial results of KCR have been presented as discontinued operations in the accompanying consolidated statements of operations and comprehensive income (loss). The following summarizes the results from discontinued operations for the two years ended December 31:
		YEARS ENDED DECEMBER 31,
		2012		2011
	Net service revenues	$	29,808	$	106,172
	Direct costs of services and operating expenses		26,491		92,775
			3,317		13,397
	Gain on sale of discontinued operations		36,418		—
	Income from discontinued operations, before income taxes		39,735		13,397
	Income tax expense		17,726		5,297
	Income from discontinued operations, net of income taxes	$	22,009	$	8,100
	Additionally, in connection with the servicing of the TSA, approximately $2,658 was due to the Purchaser from Kforce as of December 31, 2012 and is classified within accounts payable and other accrued liabilities in the consolidated balance sheet. This was paid during 2013.
	Acceleration of Equity Awards
	In connection with the disposition of KCR as described above, the Board exercised its discretion, as permitted within the Kforce Inc. 2006 Stock Incentive Plan, to accelerate the vesting, for tax planning purposes, of substantially all of the outstanding and unvested restricted stock and alternative long-term incentive awards (“ALTI”) effective March 31, 2012. Kforce recognized a tax benefit from the acceleration of the vesting of restricted stock and ALTI. The acceleration resulted in the recognition of previously unrecognized compensation expense during the quarter ended March 31, 2012 of $31,297, which included $784 of payroll taxes. This expense was classified in selling, general and administrative expenses in the accompanying consolidated statements of operations and comprehensive income (loss).

Fixed_Assets

Fixed Assets	12 Months Ended
	Dec. 31, 2013
Property Plant And Equipment [Abstract]	'
Fixed Assets	'
	3. Fixed Assets
	Major classifications of fixed assets and related useful lives are summarized as follows:
				DECEMBER 31,
		USEFUL LIFE		2013			2012
	Land			$	5,892		$	5,892
	Building and improvements		5-40 years		25,191			25,121
	Furniture and equipment		5-7 years		9,701			8,232
	Computer equipment		3-5 years		8,966			7,269
	Leasehold improvements		3-5 years		6,894			4,720
	Capital leases		3-5 years		4,306			5,902
					60,950			57,136
	Less accumulated depreciation and amortization				(24,222	)		(22,253	)
				$	36,728		$	34,883
	Depreciation and amortization expense during the years ended December 31, 2013, 2012 and 2011 was $5,863, $5,368 and $5,826, respectively.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	4. Income Taxes
	The provision for income taxes from continuing operations consists of the following:
		YEARS ENDED DECEMBER 31,
		2013			2012			2011
	Current:
	Federal	$	7,119		$	(1,238	)	$	8,784
	State		1,026			(1,097	)		1,244
	Deferred		1,166			(17,519	)		830
		$	9,311		$	(19,854	)	$	10,858
	The provision for income taxes from continuing operations shown above varied from the statutory federal income tax rate for those periods as follows:
		YEARS ENDED DECEMBER 31,
		2013			2012			2011
	Federal income tax rate		35	%		35	%		35	%
	State income taxes, net of Federal tax effect		4.2			4.7			3.3
	Non-deductible goodwill impairment		2.4			(4.1	)		—
	Non-deductible meals and entertainment		2.9			(0.7	)		1
	Other		1.8			0.8			(3.0	)
	Effective tax rate		46.3	%		35.7	%		36.3	%
	Deferred income tax assets and liabilities are composed of the following:
		DECEMBER 31,
		2013			2012
	Deferred taxes, current:
	Assets:
	Accounts receivable reserves	$	779		$	859
	Accrued liabilities		2,902			3,795
	Deferred compensation obligation		1,111			917
	Pension and postretirement benefit plans		19			4,191
	Other		75			71
	Deferred tax assets, current		4,886			9,833
	Liabilities:
	Prepaid expenses		(224	)		(339	)
	Deferred tax asset, net – current		4,662			9,494
	Deferred taxes, non-current:
	Assets:
	Accrued liabilities		579			258
	Deferred compensation obligation		6,896			6,622
	Stock-based compensation		773			356
	Pension and postretirement benefit plans		4,916			5,563
	Goodwill and intangible assets		11,750			10,142
	Deferred revenue		106			54
	Other		1,531			2,140
	Deferred tax assets, non-current		26,551			25,135
	Liabilities:
	Fixed assets		(2,693	)		(2,659	)
	Other		(503	)		(868	)
	Deferred tax liabilities, non-current		(3,196	)		(3,527	)
	Valuation allowance		(85	)		(85	)
	Deferred tax asset, net – non-current		23,270			21,523
	Net deferred tax asset	$	27,932		$	31,017
	At December 31, 2013, Kforce had approximately $20,907 of state tax net operating losses (“NOLs”) which will be carried forward to be offset against future state taxable income. The state tax NOLs expire in varying amounts through 2032.
	In evaluating the realizability of Kforce’s deferred tax assets, management assesses whether it is more likely than not that some portion, or all, of the deferred tax assets, will be realized. Management considers, among other things, the ability to generate future taxable income (including reversals of deferred tax liabilities) during the periods in which the related temporary differences will become deductible.
	Kforce is periodically subject to U.S. Internal Revenue Service (“IRS”) audits as well as state and other local income tax audits for various tax years. During 2013, the IRS finished an examination of Kforce’s U.S. income tax return for 2009 with no material adjustments, and no settlements. During 2013, the IRS commenced a Limited Issue Focused Exam of Kforce’s 2010 and 2011 U.S. income tax returns. No material liabilities are expected to result from this ongoing examination. Although Kforce has not experienced any material liabilities in the past due to income tax audits, Kforce can make no assurances that this will continue.
	Uncertain Income Tax Positions
	An uncertain income tax position taken on the income tax return must be recognized in the consolidated financial statements at the largest amount that is more likely than not to be sustained upon audit by the relevant taxing authority. An uncertain income tax position will not be recognized if it has less than a 50% likelihood of being sustained.
	A reconciliation of the beginning and ending amounts of unrecognized tax benefits for the years ended December 31, 2013, 2012 and 2011 is as follows:
		December 31,
		2013			2012			2011
	Beginning balance	$	133		$	72		$	191
	Additions for tax positions of prior years		269			36			10
	Additions for tax positions of current year		25			25			38
	Reductions for tax positions of prior years – lapse of applicable statutes		(24	)		—			(82	)
	Settlements		—			—			(85	)
	Ending balance	$	403		$	133		$	72
The entire amount of these unrecognized tax benefits as of December 31, 2013, if recognized, would not significantly impact the effective tax rate. Kforce does not expect any significant changes to its uncertain tax positions in the next 12 months.
Kforce and its subsidiaries file income tax returns in the U.S. federal jurisdiction and various states. Global files income tax returns in the Philippines. With a few exceptions, Kforce is no longer subject to federal, state, local, or non-U.S. income tax examinations by tax authorities for years before 2009.

Other_Assets

Other Assets	12 Months Ended
	Dec. 31, 2013
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]	'
Other Assets	'
	5. Other Assets
		DECEMBER 31,
		2013		2012
	Assets held in Rabbi Trust	$	24,910	$	20,801
	Capitalized software, net of amortization		5,472		6,729
	Deferred loan costs, net of amortization		288		345
	Other non-current assets		321		163
		$	30,991	$	28,038
	As of December 31, 2013, the assets held in Rabbi Trust were $24,910, which was comprised of $24,041 related to the cash surrender value of life insurance policies and $869 of money market funds. As of December 31, 2012, the assets held in Rabbi Trust were $20,801, which was comprised of $16,677 related to the cash surrender value of life insurance policies and $4,124 of bond mutual funds. The cash surrender value of Company-owned life insurance policies relates to policies maintained by Kforce on certain participants in its deferred compensation plan, which, in conjunction with the money market funds, could be used to fund the related obligations (Note 12).
	Kforce capitalized software purchases as well as direct costs associated with software developed for internal use of approximately $2,244 and $2,429 during the years ended December 31, 2013 and 2012, respectively. Accumulated amortization of capitalized software was $34,816 and $31,861 as of December 31, 2013 and 2012, respectively. Amortization expense of capitalized software during the years ended December 31, 2013, 2012 and 2011 was $3,236, $4,587 and $5,716, respectively.

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'
Goodwill and Other Intangible Assets	'
	6. Goodwill and Other Intangible Assets
	Goodwill
	The following table contains a disclosure of changes in the carrying amount of goodwill in total and for each reporting unit for the two years ended December 31, 2013:
			Technology			Finance and			Clinical			Health			Government			Total
						Accounting			Research			Information			Solutions
												Management
	Balance as of December 31, 2011		$	17,034		$	8,006		$	5,474		$	4,923		$	102,641		$	138,078
	Adjustment			—			—			36			(36	)		—			—
	Disposition of KCR (a)			—			—			(5,510	)		—			—			(5,510	)
	Impairment of goodwill			—			—			—			—			(69,158	)		(69,158	)
	Balance as of December 31, 2012		$	17,034		$	8,006		$	—		$	4,887		$	33,483		$	63,410
	Impairment of goodwill			—			—			—			—			(14,510	)		(14,510	)
	Balance as of December 31, 2013		$	17,034		$	8,006		$	—		$	4,887		$	18,973		$	48,900
	(a)	See Note 2 – “Discontinued Operations” for additional discussion.
	Kforce performed its annual impairment assessment of the carrying value of goodwill as of December 31, 2013 and 2012. During the impairment test performed on December 31, 2012, Kforce compared the carrying value of the GS reporting unit to its estimated fair value and for the Tech, FA and HIM reporting units performed a qualitative assessment to determine if it was more likely than not that the fair value of the reporting units was less than its carrying amount. Kforce concluded there were no indications of impairment for its Tech, FA, HIM or GS reporting units during the December 31, 2012 annual impairment tests.
	As of March 31, June 30, and September 30, 2013, as part of our customary quarterly procedures, we considered the qualitative and quantitative factors associated with each of our reporting units and determined that there was not an indication that the carrying values of any of our reporting units were likely impaired. During the fourth quarter of 2013, Kforce management made a strategic business decision with regard to the GS segment to focus its service offerings and efforts on prime integrated business solution services. As a result of this change in focus, management plans to reallocate existing investments in the business and redirect the business development team to concentrate on a more specific and, in our opinion, a higher quality revenue stream. These plans will ultimately result in the transition away from certain existing revenue streams, specific revenue-generating contracts and opportunities in the business development life cycle that do not fit within the revised strategic scope of service offerings, including pure staff augmentation as well as product sales. The change in strategy, coupled with the lengthy contract procurement cycle within the government sector of approximately 18 months for solution-based services, changed our expectations for the forecast, and is now is expected to have a negative impact on near-term growth prospects of the GS segment. We believe that these circumstances indicated a possible impairment trigger during the fourth quarter, which was assessed in conjunction with the annual impairment test.
	During the annual impairment test performed as of December 31, 2013 for our Tech, FA and HIM reporting units, Kforce assessed the qualitative factors of each reporting unit to determine if it was more likely than not that the fair value of the reporting unit was less than its carrying amount, including goodwill. Based upon the qualitative assessments for our Tech and FA reporting units, it was determined that it was not more likely than not that the fair value of the reporting units were less than the carrying values. For our HIM reporting unit, a quantitative, or step one, analysis was deemed appropriate as a result of the deterioration in the operating results as compared to previous forecasts.
	For our GS and HIM reporting units, we compared the respective carrying values to their estimated fair value based on a weighting of both the income approach and the market approaches. Discounted cash flows, which serve as the primary basis for the income approach, were based on discrete financial forecasts which were developed by management for planning purposes and were consistent with those distributed within Kforce. Cash flows beyond the discrete forecast period of five years were estimated using a terminal value calculation, which incorporated historical and forecasted financial trends and also considered long-term earnings growth rates for publicly-traded peer companies, as well as the risk-free rate of return. For the GS reporting unit, the discrete financial forecast includes certain adjustments of costs that Kforce believes a market participant buyer, such as a large government contractor, would incur to operate the GS reporting unit. A terminal value growth rate of 3% was used for both the GS and the HIM reporting units. The income approach valuation included the cash flow discount rate, representing the GS and HIM reporting units’ weighted average cost of capital of 17% and 17.5%, respectively. This weighted average cost of capital includes a specific company risk premium of 2% for both GS and HIM.
	As previously mentioned, the market approaches consist of the (i) guideline company method and (ii) guideline transaction method. The guideline company method applies pricing multiples derived from publicly-traded guideline companies that are comparable to the respective reporting unit to determine its value. To calculate fair values under the guideline company method, Kforce utilized enterprise value/revenue multiples ranging from 0.4x to 0.5x and 0.3x to 0.6x and enterprise value/EBITDA multiples ranging from 4.4x to 6.9x and 5.4x to 13.5x for GS and HIM, respectively. Additionally, the fair value under the guideline company method included a control premium ranging of 40% and 10% for GS and HIM respectively, which was determined based on a review of comparative market transactions.
	The guideline transaction method applies pricing multiples derived from recently completed acquisitions that we believe are reasonably comparable to the reporting unit to determine fair value. To calculate fair values under the guideline transaction method, Kforce utilized enterprise value/revenue multiples ranging from 0.6x to 2.0x and 0.2x to 0.8x and enterprise value/EBITDA multiples ranging from 5.8x and 18.7x and from 4.7x to 19.7x, respectively for the GS and HIM reporting units. Kforce used the enterprise value to EBITDA ratio due to it being the predominant measure used in the marketplace to value this type of business. Publicly available information regarding the market capitalization of Kforce was also considered in assessing the reasonableness of the cumulative fair values of our reporting units.
	Upon completion of the first step of the goodwill impairment analysis as of December 31, 2013 for our HIM reporting unit, it was determined the fair value exceeded its carrying value by 156%. For the GS reporting unit, the results of the first step of the goodwill impairment analysis as of December 31, 2013 indicated that the fair value was 73% of its carrying value; therefore, impairment was indicated. Because indicators of impairment existed, we commenced the second step of the goodwill impairment analysis to determine the implied fair value of goodwill for the reporting unit, which was determined in the same manner utilized to estimate the amount of goodwill recognized in a business combination. As part of the second step of the impairment analysis performed as of December 31, 2013, we calculated the fair value of certain assets, including trade names and customer relationships. The implied fair value of goodwill was measured as the excess of the fair value of the GS reporting unit over the amounts assigned to its assets and liabilities. The goodwill impairment loss for the reporting unit was measured by the amount the carrying value of goodwill exceeded the implied fair value of the goodwill. Based on this assessment, we recorded an impairment charge of $14,510 which is presented separately in the consolidated statements of operations and comprehensive income (loss). A tax benefit in the amount of $5,160 was recorded related to the goodwill impairment charge.
	During the three months ended June 30, 2012, due to certain adverse effects of events and indications during that time period, Kforce believed that a triggering event occurred within our GS reporting unit during the quarter. As a result, Kforce performed an interim goodwill impairment analysis for its GS reporting unit as of June 30, 2012, which resulted in an indication of impairment and Kforce recording an estimated impairment charge. Due to the complexity of the second step of the impairment analysis, Kforce completed the analysis during the fourth quarter of 2012. Based on this assessment, we recorded an impairment charge of $69,158 which included a related tax benefit of $24,670 during the year ended December 31, 2012. This impairment charge included an incremental adjustment of $3,858 with a related tax benefit of $1,405 resulting from the completion of the second step analysis during the fourth quarter of 2012.
	Total goodwill impairment for the years ending December 31, 2013, 2012 and 2011 was $14,510, $69,158 and $0, respectively.
	The following table contains a disclosure of the gross amount and accumulated impairment losses of goodwill for Tech, FA and GS reporting units for the two years ended December 31, 2013:
			Goodwill Carrying Value by Reporting Unit as of:
			December 31, 2013			December 31, 2012			January 1, 2012
	Technology
	Gross amount		$	156,391		$	156,391		$	156,391
	Accumulated impairment losses		$	(139,357	)	$	(139,357	)	$	(139,357	)
	Carrying value		$	17,034		$	17,034		$	17,034
	Finance and Accounting
	Gross amount		$	19,766		$	19,766		$	19,766
	Accumulated impairment losses		$	(11,760	)	$	(11,760	)	$	(11,760	)
	Carrying value		$	8,006		$	8,006		$	8,006
	Government Solutions
	Gross amount		$	102,641		$	102,641		$	102,641
	Accumulated impairment losses		$	(83,668	)	$	(69,158	)	$	—
	Carrying value		$	18,973		$	33,483		$	102,641
	There has been no impairment charges recognized for the HIM reporting unit. As a result, the carrying value of goodwill for each of the two years ended December 31, 2013 and 2012 represents the gross amount of goodwill attributable to the reporting unit.
	Other Intangible Assets
	The gross and net carrying values of intangible assets as of December 31, 2013 and 2012, by major intangible asset class, are as follows:
			December 31, 2013			December 31, 2012
	Definite-lived intangible assets
	Customer relationships, customer contracts, and other
	Gross amount		$	27,940		$	27,936
	Accumulated amortization		$	(25,187	)	$	(24,440	)
	Carrying value		$	2,753		$	3.496
	Indefinite-lived intangible assets
	Trade name and trademark
	Gross amount		$	2,240		$	2,240
	Accumulated impairment losses		$	—		$	—
	Carrying value		$	2,240		$	2,240
	Amortization expense on intangible assets for each of the three years ended December 31, 2013, 2012, and 2011 was $747, $907 and $1,152, respectively. Amortization expense for 2014, 2015, 2016, 2017 and 2018 is expected to be $634, $634, $457, $209 and $209, respectively.
	There was no impairment expense related to indefinite-lived intangible assets during the years ended December 31, 2013, 2012 or 2011.

Accounts_Payable_and_Other_Acc

Accounts Payable and Other Accrued Liabilities	12 Months Ended
	Dec. 31, 2013
Payables And Accruals [Abstract]	'
Accounts Payable and Other Accrued Liabilities	'
	7. Accounts Payable and Other Accrued Liabilities
	Accounts payable and other accrued liabilities consisted of the following:
		DECEMBER 31,
		2013		2012
	Accounts payable	$	19,445	$	22,653
	Accrued liabilities		12,376		13,552
		$	31,821	$	36,205
	Kforce utilizes a major procurement card provider to pay certain of its corporate trade payables. The balance owed to this provider for these transactions as of December 31, 2013 and 2012 was $695 and $875, respectively, and has been included in accounts payable and other accrued liabilities in the accompanying consolidated balance sheets. The cash flows associated with these transactions have been presented as a financing activity in the accompanying consolidated statement of cash flows.

Accrued_Payroll_Costs

Accrued Payroll Costs	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Accrued Payroll Costs	'
	8. Accrued Payroll Costs
	Accrued payroll costs consisted of the following:
		DECEMBER 31,
		2013		2012
	Payroll and benefits	$	43,059	$	36,172
	Payroll taxes		9,111		9,246
	Health insurance liabilities		2,993		3,114
	Workers’ compensation liabilities		1,709		1,531
		$	56,872	$	50,063

Other_Current_Liabilities

Other Current Liabilities	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Other Current Liabilities	'
	9. Other Current Liabilities
	Other current liabilities consisted of the following:
		DECEMBER 31,
		2013		2012
	Supplemental executive retirement plan (Note 12)	$	—	$	10,682
	Other		1,141		882
		$	1,141	$	11,564

Credit_Facility

Credit Facility	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Credit Facility	'
	10. Credit Facility
	On September 20, 2011, Kforce entered into a Third Amended and Restated Credit Agreement, with a syndicate led by Bank of America, N.A. This was amended on March 30, 2012 in connection with the divestiture of KCR and was amended on December 27, 2013 (as amended to date, the “Credit Facility”) through the execution of a Second Amendment and Joinder resulting in the increase in the borrowing capacity from $100 million to $135 million by executing the accordion feature under the Credit Facility. Kforce has a remaining accordion option of $15 million. The maximum borrowings available to Kforce under the Credit Facility are limited to: (a) a revolving credit facility of up to $135 million (the “Revolving Loan Amount”) and (b) a $15 million sub-limit included in the Credit Facility for letters of credit.
	Borrowing availability under the Credit Facility is limited to the remainder of (a) the lesser of (i) $135 million minus the four week average aggregate weekly payroll of employees assigned to work for customers, or (ii) 85% of the net amount of eligible accounts receivable, plus 80% of the net amount of eligible unbilled accounts receivable, plus 80% of the net amount of eligible employee placement accounts, minus certain minimum availability reserves, and in either case, minus (b) the aggregate outstanding amount under the Credit Facility. Outstanding borrowings under the Revolving Loan Amount bear interest at a rate of (a) LIBOR plus an applicable margin based on various factors or (b) the higher of: (i) the prime rate, (ii) the federal funds rate plus 0.50% or (iii) LIBOR plus 1.25%. Letters of credit issued under the Credit Facility require Kforce to pay a fronting fee equal to 0.125% of the amount of each letter of credit issued, plus a per annum fee equal to the applicable margin for LIBOR loans based on the total letters of credit outstanding. To the extent that Kforce has unused availability under the Credit Facility, an unused line fee is required to be paid equal to the applicable margin times the amount by which the maximum revolver amount exceeded the sum of the average daily outstanding amount of the revolving loans and the average daily undrawn face amount of outstanding letters of credit during the immediate preceding month. Borrowings under the Credit Facility are secured by substantially all of the assets of Kforce and its subsidiaries, excluding the real estate located at Kforce’s corporate headquarters in Tampa, Florida. Under the Credit Facility, Kforce is subject to certain affirmative and negative covenants including (but not limited to) the maintenance of a fixed charge coverage ratio of at least 1.00 to 1.00 if the Firm’s availability under the Credit Facility is less than the greater of 10% of the aggregate amount of the commitment of all of the lenders under the Credit Facility and $11 million. Kforce had availability under the Credit Facility of $43.2 million as of December 31, 2013; therefore, the minimum fixed charge coverage ratio was not applicable. Kforce believes that it will be able to maintain the minimum availability requirement; however, in the event that Kforce is unable to do so, Kforce could fail the fixed charge coverage ratio, which would constitute an event of default. Kforce believes the likelihood of default is remote. The Credit Facility expires September 20, 2016.
	As of December 31, 2013 and 2012, $64,642 and $21,000 was outstanding under the Credit Facility, respectively.

Other_LongTerm_Liabilities

Other Long-Term Liabilities	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Other Long-Term Liabilities	'
	11. Other Long-Term Liabilities
	Other long-term liabilities consisted of the following:
		DECEMBER 31,
		2013		2012
	Deferred compensation plan (Note 12)	$	22,247	$	19,115
	Supplemental executive retirement plan (Note 12)		7,852		8,976
	Supplemental executive retirement health plan (Note 12)		2,627		3,554
	Other		3,830		2,640
		$	36,556	$	34,285

Employee_Benefit_Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2013
Postemployment Benefits [Abstract]	'
Employee Benefit Plans	'
	12. Employee Benefit Plans
	Alternative Long-Term Incentive
	On January 3, 2012, Kforce granted to certain executive officers an ALTI as the result of certain performance criteria established in 2011 being met, which was to be initially measured over three tranches having periods of 12, 24, and 36 months, respectively. The terms of the grants specified that the ultimate annual payouts would be based on: (a) Kforce’s common stock price changes each year relative to its peer group or (b) the achievement of other market conditions contained in the terms of the award.
	As discussed within Note 2 – “Discontinued Operations,” the Board approved the acceleration of all outstanding and unvested long-term incentives, including the ALTI, effective March 31, 2012. The accelerated ALTI of $9,805 was paid in April 2012. Kforce recognized total compensation expense related to ALTI $9,805 during the year ended December 31, 2012. No compensation expense related to ALTIs was recorded during the years ended December 31, 2013 or 2011.
	401(k) Savings Plans
	Kforce has a qualified defined contribution 401(k) Retirement Savings Plan (the “Kforce 401(k) Plan”) covering substantially all Kforce Inc. employees. Assets of the Kforce 401(k) Plan are held in trust for the sole benefit of employees and/or their beneficiaries. On October 2, 2006, Kforce created the Kforce Government Practice Plan, a qualified defined contribution 401(k) retirement savings plan (the “Government 401(k) Plan”), which covers all eligible employees of the GS segment. Assets of the Government 401(k) Plan are held in trust for the sole benefit of employees and/or their beneficiaries. Employer matching contributions are discretionary and are funded annually as approved by the Board of Directors.
	Kforce accrued matching contributions of $973 and $1,139 for the above plans as of December 31, 2013 and 2012, respectively. The Kforce 401(k) Plan and Government 401(k) Plan held a combined 317 and 363 shares of Kforce’s common stock as of December 31, 2013 and 2012, respectively.
	Employee Stock Purchase Plan
	Kforce’s employee stock purchase plan allows all eligible employees to purchase Kforce’s common stock at a 5% discount from its market price at the end of a rolling three-month offering period. Kforce issued 41, 51 and 56 shares of common stock at an average purchase price of $14.88, $12.55 and $12.64 per share during the years ended December 31, 2013, 2012 and 2011, respectively. All shares purchased under the employee stock purchase plan were settled using Kforce’s treasury stock.
	Deferred Compensation Plan
	Kforce has a Non-Qualified Deferred Compensation Plan (the “Kforce NQDC Plan”) and a Kforce Non-Qualified Deferred Compensation Government Practice Plan (the “GS NQDC Plan”), pursuant to which eligible management and highly compensated key employees, as defined by IRS regulations, may elect to defer all or part of their compensation to later years. These amounts are classified in accounts payable and other accrued liabilities if payable within the next year or as other long-term liabilities if payable after the next year, upon retirement or termination of employment. At December 31, 2013 and 2012, amounts included in accounts payable and other accrued liabilities related to the deferred compensation plan totaled $3,149 and $1,699, respectively. Amounts included in other long-term liabilities related to the deferred compensation plan totaled $22,247 and $19,115 as of December 31, 2013 and 2012, respectively. Kforce has insured the lives of certain participants in the deferred compensation plan to assist in the funding of the deferred compensation liability. Compensation expense of $578, $648 and $1,358 was recognized for the plans for the years ended December 31, 2013, 2012 and 2011, respectively.
	Employee distributions are being funded through proceeds from the sale of assets held within our Rabbi Trust. The fair value of the assets within the Rabbi Trust, including the cash surrender value of the Company-owned life insurance policies, money market funds and bond mutual funds, was $24,910 and $20,801 as of December 31, 2013 and 2012, respectively, and is recorded in Other assets, net in the accompanying consolidated balance sheet. For the years ended December 31, 2013 and 2012, there was $15 in losses and $519 in gains, respectively, attributable to the investments in trading securities, including both money market funds and bond mutual funds, which is included in selling, general and administrative expenses in the consolidated statements of operations and comprehensive income (loss). The Firm held no trading securities, and as such, recorded no gains or losses during the year ended December 31, 2011.
	Foreign Pension Plan
	Kforce maintains a foreign defined benefit pension plan for eligible employees of the Philippine branch of Global that is required by Philippine labor laws. The plan defines retirement as those employees who have attained the age of 60 and have completed at least five years of credited service. Benefits payable under the plan equate to one-half month’s salary for each year of credited service. Benefits under the plan are paid out as a lump sum to eligible employees at retirement.
	The significant assumptions used by Kforce in the actuarial valuation include the discount rate, the estimated rate of future annual compensation increases and the estimated turnover rate. As of December 31, 2013, 2012 and 2011, the discount rate used to determine the actuarial present value of the projected benefit obligation and pension expense was 5.0%, 6.0% and 7.40%, respectively. The discount rate was determined based on long-term Philippine government securities yields commensurate with the expected payout of the benefit obligation. The estimated rate of future annual compensation increases as of December 31, 2013, 2012 and 2011 was 3.0%, 3.0% and 5.0%, respectively, and was based on historical compensation increases as well as future expectations. The Company applies a turnover rate to the specific age of each group of employees, which ranges from 20 to 64 years of age. For the years ended December 31, 2013, 2012 and 2011, net periodic benefit cost was $92, $128 and $189, respectively.
	As of December 31, 2013 and 2012, the projected benefit obligation associated with our foreign defined benefit pension plan was $1,434 and $1,187, respectively, which is classified in other long-term liabilities in the accompanying consolidated balance sheets.
	Supplemental Executive Retirement Plan
	Kforce maintains a Supplemental Executive Retirement Plan (the “SERP”) for the benefit of certain Named Executive Officers (“NEOs”). The primary goals of the SERP are to create an additional wealth accumulation opportunity, restore lost qualified pension benefits due to government limitations and retain our NEOs. The SERP is a non-qualified benefit plan and does not include elective deferrals of covered executive officers’ compensation.
	Normal retirement age under the SERP is defined as age 65; however, certain conditions allow for early retirement as early as age 55 or upon a change in control. Vesting under the plan is defined as 100% upon a participant’s attainment of age 55 and 10 years of service and 0% prior to a participant’s attainment of age 55 and 10 years of service. Full vesting also occurs if a participant with five years or more of service is involuntarily terminated by Kforce without cause or upon death, disability or a change in control. The SERP is funded entirely by Kforce, and benefits are taxable to the executive officer upon receipt and deductible by Kforce when paid. Benefits payable under the SERP upon the occurrence of a qualifying distribution event, as defined, are targeted at 45% of the covered executive officers’ average salary and bonus, as defined, from the three years in which the executive officer earned the highest salary and bonus during the last 10 years of employment, which is subject to adjustment for retirement prior to the normal retirement age and the participant’s vesting percentage. The benefits under the SERP are reduced for a participant that has not reached age 62 with 10 years of service or age 55 with 25 years of service with a percentage reduction up to the normal retirement age.
	Benefits under the SERP are normally paid based on the lump sum present value but may be paid over the life of the covered executive officer or 10-year annuity, as elected by the covered executive officer upon commencement of participation in the SERP. None of the benefits earned pursuant to the SERP are attributable to services provided prior to the effective date of the plan. For purposes of the measurement of the benefit obligation as of December 31, 2013, Kforce has assumed that all participants will elect to take the lump sum present value option based on historical trends.
	Actuarial Assumptions
	The following represents the actuarial assumptions used to determine the actuarial present value of projected benefit obligations at:
		DECEMBER 31,
		2013			2012
	Discount rate		3.75	%		2.5	%
	Expected long-term rate of return on plan assets		—			—
	Rate of future compensation increase		4	%		3.75	%
	The following represents the weighted average actuarial assumptions used to determine net periodic benefit cost for the years ended:
		DECEMBER 31,
		2013			2012			2011
	Discount rate		2.5	%		3.25	%		4	%
	Expected long-term rate of return on plan assets		—			—			—
	Rate of future compensation increase		4	%		4	%		4	%
	The discount rate was determined using the Moody’s Aa long-term corporate bond yield as of the measurement date with a maturity commensurate with the expected payout of the SERP obligation. This rate is also compared against the Citigroup Pension Discount Curve and Liability Index to ensure the rate used is reasonable and may be adjusted accordingly. This index is widely used by companies throughout the United States and is considered to be one of the preferred standards for establishing a discount rate.
	Due to the SERP being unfunded as of December 31, 2013 and 2012, it is not necessary for Kforce to determine the expected long-term rate of return on plan assets. Once funded, Kforce will determine the expected long-term rate of return on plan assets by determining the composition of the asset portfolio, the historical long-term investment performance and the current market conditions. The assumed rate of future compensation increases is based on a combination of factors, including the historical compensation increases for its NEOs and future target compensation levels for its NEOs taking into account the NEOs’ assumed retirement date.
	The periodic benefit cost is based on actuarial assumptions that are reviewed on an annual basis; however, Kforce monitors these assumptions on a periodic basis to ensure that they accurately reflect current expectations of the cost of providing retirement benefits.
	Net Periodic Benefit Cost
	The following represents the components of net periodic benefit cost for the years ended:
		DECEMBER 31,
		2013			2012			2011
	Service cost	$	2,018		$	2,087		$	3,248
	Interest cost		471			560			482
	Amortization of actuarial loss		97			164			76
	Settlement loss		24			—			—
	Net periodic benefit cost	$	2,610		$	2,811		$	3,806
	Changes in Benefit Obligation
	The following represents the changes in the benefit obligation for the years ended:
		DECEMBER 31,
		2013			2012
	Projected benefit obligation, beginning	$	19,658		$	17,230
	Service cost		2,018			2,087
	Interest cost		471			560
	Actuarial experience and changes in actuarial assumptions		(1,475	)		(219	)
	Curtailment		(2,138	)		—
	Benefits Paid		(10,682	)		—
	Projected benefit obligation, ending	$	7,852		$	19,658
	During the three months ended December 31, 2013, in connection with the Firm’s organizational realignment, two participants in the SERP were terminated, resulting in a curtailment of $2,138 to the projected benefit obligation. Additionally, during the three months ended December 31, 2013, Kforce made a lump sum payment to a participant in the SERP of $10,682 as a result of the participant’s separation from service on June 1, 2013, as previously announced. The current portion of the present value of the projected benefit obligation (as recorded in other current liabilities in the accompanying consolidated balance sheets) was $0 and $10,682 as of December 31, 2013 and 2012, respectively. The long-term portion of the present value of the projected benefit obligation as of December 31, 2013 and 2012 was $7,852 and $8,976, respectively, and is recorded in other long-term liabilities in the accompanying consolidated balance sheets. During the year ended December 31, 2012, there were no payments made under the SERP.
	Contributions
	There is no requirement for Kforce to fund the SERP and, as a result, no contributions have been made to the SERP through the year ended December 31, 2013. Kforce does not currently anticipate funding the SERP during the year ending December 31, 2014.
	Estimated Future Benefit Payments
	Benefit payments by the SERP, which reflect the anticipated future service of participants, are expected to be paid (undiscounted) as follows:
		PROJECTED ANNUAL
		BENEFIT PAYMENTS
2014	$	—
2015		—
2016		—
2017		—
2018		—
2019-2023		7,494
Thereafter		3,044
Supplemental Executive Retirement Health Plan
Kforce maintains a Supplemental Executive Retirement Health Plan (“SERHP”) to provide postretirement health and welfare benefits to certain executives. The vesting and eligibility requirements mirror that of the SERP, and no advance funding is required by Kforce or the participants. Consistent with the SERP, none of the benefits earned are attributable to services provided prior to the effective date of the plan.
Actuarial Assumptions
The following represents the actuarial assumptions used to determine the present value of the postretirement benefit obligation at:
	DECEMBER 31,
	2013			2012
Discount rate		5	%		3.75	%
Expected long-term rate of return on plan assets		—			—
The following represents the actuarial assumptions used to determine the net periodic postretirement benefit cost for the years ended:
	DECEMBER 31,
	2013			2012			2011
Discount rate		3.75	%		4	%		5.25	%
Expected long-term rate of return on plan assets		—			—			—
The discount rate was determined using the Moody’s Aa long-term corporate bond yield as of the measurement date with a maturity commensurate with the expected payout of the SERP obligation. This rate is compared against the Citigroup Pension Discount Curve and Liability Index to ensure the rate used is reasonable.
Due to the SERHP being unfunded as of December 31, 2013 and 2012, it is not necessary for Kforce to determine the expected long-term rate of return on plan assets. Once funded, Kforce will determine the expected long-term rate of return on plan assets by determining the composition of the asset portfolio, the historical long-term investment performance and current market conditions.
The following represents the assumed health care cost trend rates used to determine the postretirement benefit obligations for the years ended:
	DECEMBER 31,
	2013			2012
Health care cost trend rate assumed for next year		7.5	%		7.5	%
Rate to which the cost trend rate is assumed to decline to (ultimate trend rate)		5	%		5	%
Year that the rate reaches the ultimate trend rate		2018			2017
Assumed health care cost trend rates can have a significant effect on the amounts reported for the SERHP. A one percent change in assumed health care cost trend rates would have the following effects:
	One Percentage Point
	Increase			Decrease
Effect of total of service and interest cost	$	73		$	(59	)
Effect on postretirement benefit obligation	$	459		$	(374	)
Net Periodic Postretirement Benefit Cost
The following represents the components of net periodic postretirement benefit cost for the years ended:
	DECEMBER 31,
	2013			2012			2011
Service cost	$	649		$	919		$	324
Interest cost		134			150			47
Amortization of actuarial loss		86			272			6
Curtailment gain		(359	)		—			—
Net periodic benefit (gain) cost	$	510		$	1,341		$	377
Changes in Postretirement Benefit Obligation
The following represents the changes in the postretirement benefit obligation for the years ended:
	DECEMBER 31,
	2013			2012
Accumulated postretirement benefit obligation, beginning	$	3,574		$	3,764
Service cost		649			919
Interest cost		134			150
Actuarial experience and changes in actuarial assumptions		(834	)		(1,259	)
Curtailment		(785	)		—
Benefits Paid		(64	)		—
Accumulated postretirement benefit obligation, ending	$	2,674		$	3,574
During the three months ended December 31, 2013, in connection with the Firm’s organizational realignment, two participants in the SERHP were terminated, resulting in a curtailment of $785 to the projected benefit obligation and in the recognition of a curtailment gain of $359 recorded in selling, general and administrative expenses in the corresponding consolidated statement of operations and comprehensive income (loss). The current portion of the accumulated postretirement benefit obligation as recorded in other current liabilities in the accompanying consolidated balance sheets was $47 and $20 as of December 31, 2013 and 2012, respectively. The long-term portion of the accumulated postretirement benefit obligation as of December 31, 2013 and 2012 is $2,627 and $3,554, respectively, and is recorded in other long-term liabilities in the accompanying consolidated balance sheets. During the year ended December 31, 2012, there were no payments made under the SERHP.
Estimated Future Benefit Payments
Benefit payments by the SERHP, which reflect anticipated future service of the participants, are expected to be paid (undiscounted) as follows:
	PROJECTED ANNUAL
	BENEFIT PAYMENTS
2014	$	48
2015		52
2016		57
2017		70
2018		76
2019-2023		743
Thereafter		7,491
Pretax amounts recognized in accumulated other comprehensive income (loss) as of December 31, 2013 that have not yet been recognized as components of net periodic benefit cost for all of Kforce’s defined benefit pension and postretirement plans, including the foreign defined benefit plan, consist entirely of actuarial gains and losses arising from the actuarial experience of the plans and changes in actuarial assumptions, as follows:
	Pensions			Postretirement
Net pretax actuarial gain	$	304		$	234
The estimated portion of the net actuarial loss above that is expected to be recognized as a component of net periodic benefit cost in the year ending December 31, 2014 is shown below:
	Pensions			Postretirement
Recognized net actuarial loss (gain)	$	11		$	—

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	13. Fair Value Measurements
	Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (i.e., an exit price) in an orderly transaction between market participants at the measurement date. It establishes a fair value hierarchy and a framework which requires categorizing assets and liabilities into one of three levels based on the assumptions (inputs) used in valuing the asset or liability. Level 1 provides the most reliable measure of fair value, while Level 3 generally requires significant management judgment. Level 1 inputs are unadjusted, quoted market prices in active markets for identical assets or liabilities. Level 2 inputs are observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets or liabilities in active markets or quoted prices for identical assets or liabilities in inactive markets. Level 3 inputs include unobservable inputs that are supported by little, infrequent, or no market activity and reflect management’s own assumptions about inputs used in pricing the asset or liability. The Company uses the following valuation techniques to measure fair value.
	The underlying investments within Kforce’s deferred compensation plans have included money market funds and bond mutual funds, which are held within the Rabbi Trust. The assets previously in bond mutual funds as of December 31, 2012 are now held in money market funds as of December 31, 2013. Assets held within the money market funds and bond mutual funds are measured on a recurring basis and are recorded at fair value based on each fund’s quoted market value per share in an active market, which is considered a Level 1 input.
	Certain assets, in specific circumstances, are measured at fair value on a non-recurring basis utilizing Level 3 inputs such as goodwill, other intangible assets and other long-lived assets. For these assets, measurement at fair value in periods subsequent to their initial recognition would be applicable if one or more of these assets were determined to be impaired.
	There were no transfers into or out of Level 1, 2 or 3 assets during the years ended December 31, 2013 and 2012. Transfers between levels are deemed to have occurred if the lowest level of input were to change.
	Kforce’s measurements at fair value on a recurring and non-recurring basis as of December 31, 2013 and 2012 were as follows:
	Assets/(Liabilities) Measured at Fair Value:		Asset/(Liability)			Quoted Prices in		Significant			Significant
						Active Markets		Other			Unobservable
						for Identical		Observable			Inputs (Level 3)
						Assets (Level 1)		Inputs (Level 2)
	As of December 31, 2013:
	Recurring basis:
	Money market funds (1)		$	869		$	869	$	—		$	—
	Credit Facility (2)		$	(62,642	)	$	—	$	(62,642	)	$	—
	Non-recurring basis:
	Goodwill (3)		$	48,900		$	—	$	—		$	48,900
	As of December 31, 2012:
	Recurring basis:
	Bond mutual funds (1)		$	4,124		$	4,124	$	—		$	—
	Credit Facility (2)		$	(21,000	)	$	—	$	(21,000	)	$	—
	Non-recurring basis:
	Goodwill (3)		$	63,410		$	—	$	—		$	63,410
	-1	See Note 12 – “Employee Benefit Plans” and Note 5 – “Other Assets” for additional discussion.
	-2	The carrying value of long-term debt approximates its estimated fair value as it re-prices at varying interest rates.
	-3	This amount is representative of the aggregated goodwill balance. The portion measured at fair value as of December 31, 2013 and 2012 of $18,973 and $38,483, respectively, was related to the GS segment. The remaining portion of the goodwill balance presented is at carrying value. See Note 6 – “Goodwill and Other Intangible Assets” for additional discussion.

Stock_Incentive_Plans

Stock Incentive Plans	12 Months Ended
	Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Stock Incentive Plans	'
	14. Stock Incentive Plans
	On April 5, 2013, the shareholders approved the 2013 Stock Incentive Plan, which was previously adopted by the Board of Directors on March 1, 2013, subject to shareholder approval. The aggregate number of shares of common stock that are subject to awards under the 2013 Stock Incentive Plan, subject to adjustment upon a change in capitalization, is 4,000. On June 20, 2006, the shareholders approved the 2006 Stock Incentive Plan and, as amended, the aggregate number of shares of common stock that are subject to awards is 7,850.
	The 2013 Stock Incentive Plan and 2006 Stock Incentive Plan allow for the issuance of stock options, stock appreciation rights (“SARs”) and restricted stock, subject to share availability. Vesting of equity instruments is determined on a grant-by-grant basis. Options expire at the end of 10 years from the date of grant, and Kforce issues new shares upon exercise of options.
	The 2013 Stock Incentive Plan terminates on April 5, 2023 and the 2006 Stock Incentive Plan terminates on April 28, 2016. The Incentive Stock Option Plan expired in 2005.
	Total compensation expense recognized related to all equity awards during the years ended December 31, 2013, 2012 and 2011 was $2,570, $26,243 and $11,976, respectively. The related tax benefit for the three years ended December 31, 2013 was $1,018, $10,241 and $4,696, respectively.
	Stock Options
	The following table presents the activity under each of the stock incentive plans discussed above for the three years ended December 31, 2013:
			Incentive			Stock			Total			Weighted		Total
			Stock			Incentive						Average		Intrinsic
			Option			Plan						Exercise		Value of
			Plan									Price Per		Options
												Share		Exercised
	Outstanding as of December 31, 2010			587			98			685		$	9.47
	Exercised			(349	)		—			(349	)	$	8.2	$	2,931
	Forfeited/Cancelled			(12	)		—			(12	)	$	10.75
	Outstanding as of December 31, 2011			226			98			324		$	10.79
	Exercised			(65	)		(5	)		(70	)	$	10.48	$	238
	Forfeited/Cancelled			(7	)		—			(7	)	$	11
	Outstanding as of December 31, 2012			154			93			247		$	10.87
	Exercised			(57	)		(10	)		(67	)	$	8.98	$	573
	Forfeited/Cancelled			—			—			—		$	—
	Outstanding and Exercisable as of December 31, 2013			97			83			180		$	11.57
	The following table summarizes information about employee and director stock options under all of the plans mentioned above as of December 31, 2013:
			OUTSTANDING AND EXERCISABLE
	Range of Exercise Prices		Number of Awards (#)			Weighted Average			Weighted			Total
						Remaining			Average			Intrinsic
						Contractual Term			Exercise			Value
						(Yrs)			Price ($)
	$0.00 - $8.95			—			—		$	—		$	—
	$8.96 - $14.45			181			2.17		$	11.57			1,605
				181			2.17		$	11.57		$	1,605
	No compensation expense was recorded during the years ended December 31, 2013, 2012 or 2011 as a result of the grant date fair value having been fully amortized as of December 31, 2009. As of December 31, 2013, there was no unrecognized compensation cost related to non-vested options.
	Stock Appreciation Rights
	Although no such requirement exists, SARs have historically been granted (if any) on the first trading day of each year to certain Kforce executives based on the extent by which annual long-term incentive performance goals, which are established by Kforce’s Compensation Committee during the first 90 days of the year of performance, are certified by the Compensation Committee as having been met. SARs generally cliff vest three years from the date of issuance; however, vesting is accelerated if Kforce’s stock price exceeds the stock price at the date of grant by 30% for a period of 10 trading days, or if the Compensation Committee determines that the criteria for acceleration are satisfied. There were no SARs granted during the three years ended December 31, 2013.
	There was no SARs activity during the year ended December 31, 2013 or 2012. Therefore, the following table presents only the activity for the year ended December 31, 2011:
			Number			Weighted Average			Total Intrinsic
			of SARs			Exercise Price Per			Value of SARs
						SAR			Exercised
	Outstanding as of December 31, 2010			169		$	10.32
	Exercised			(169	)	$	10.32		$	1,278
	Outstanding as of December 31, 2011			—		$	—
	No compensation expense was recognized during the three years ended December 31, 2013 due to the grant date fair value being fully amortized as of December 31, 2008. As of December 31, 2013, there was no unrecognized compensation cost related to SARs.
	Restricted Stock
	Restricted stock grants made to Kforce’s executives and management are generally based on the extent by which annual long-term incentive performance goals, which are established by Kforce’s Compensation Committee during the first quarter of the year of performance, have been met, as certified by the Compensation Committee. Restricted stock granted by Kforce contains time-based vesting terms ranging from two to ten years and, for certain awards, includes a performance-acceleration feature upon which vesting would accelerate if Kforce’s closing stock price exceeded the stock price at the date of grant by a pre-established percentage (which historically ranged from 40 - 50%) for a period of 10 trading days, or if the Compensation Committee determined that the criteria for acceleration was satisfied. Kforce refers to restricted stock containing only a time-based vesting term as restricted stock whereas restricted stock containing both a time-based vesting term and a performance-acceleration feature is referred to by the Company as performance-accelerated restricted stock. During the three months ended December 31, 2013, Kforce granted restricted stock and performance-accelerated restricted stock both having a time-based vesting period of ten years with 20% of the grant vesting annually in years six through ten.
	Restricted stock contain voting rights and are included in the number of shares of common stock issued and outstanding. Restricted stock granted contain the right to dividends in the form of additional shares of restricted stock at the same rate as the cash dividend on common stock and containing the same vesting provisions as the underlying award. The following table presents the activity for the three years ended December 31, 2013:
			Number of Restricted Stock			Weighted Average			Total Intrinsic
						Grant Date			Value of Restricted
						Fair Value			Stock
									Vested
	Outstanding as of December 31, 2010			1,898		$	12.34
	Granted (a)			1,604		$	16.31
	Vested			(168	)	$	11.41		$	2,592
	Forfeited			—		$	—
	Outstanding as of December 31, 2011			3,334		$	14.3
	Granted			288		$	12.67
	Vested			(3,191	)	$	14.15		$	47,407
	Forfeited (a)			(393	)	$	16.37
	Outstanding as of December 31, 2012			38		$	12.11
	Granted			904		$	16.72
	Vested			(109	)	$	14.15		$	2,092
	Forfeited			(22	)	$	15.43
	Outstanding as of December 31, 2013			811		$	16.89
	(a)	Included in the restricted stock granted during the year ended December 31, 2011 are 689 shares of performance-based restricted stock which were subject to forfeiture based upon the level of attainment of performance conditions pre-established by the Compensation Committee. In February 2012, the Compensation Committee certified 2011 performance measures, which resulted in the forfeiture of approximately 393 of these shares of restricted stock which was consistent with estimated forfeitures during 2011 that was used for compensation expense recognition purposes.
The fair market value of restricted stock is determined based on the closing stock price of Kforce’s common stock at the date of grant, and is amortized on a straight-line basis over the requisite service period. For the performance-accelerated restricted stock, the requisite service period is the derived service period, which is determined using a Monte Carlo model.
In connection with the Firm’s organizational realignment, Kforce terminated two of its NEOs during the three months ended December 31, 2013. In connection with their termination, Kforce accelerated the vesting of their restricted stock and, as a result, accelerated all of the related unrecognized compensation expense associated with these awards of $1,078 during the three months ended December 31, 2013.
As discussed within Note 2 – “Discontinued Operations,” the Board approved the vesting acceleration of substantially all of the outstanding and unvested long-term incentives, including the restricted stock, effective March 31, 2012. As a result of the acceleration, Kforce accelerated all of the previously unrecognized compensation expense associated with these awards of $22,158 during the three months ended March 31, 2012.
Kforce recognized total compensation expense related to restricted stock of $2,570, $26,243 and $11,976 during the years ended December 31, 2013, 2012 and 2011, respectively. As of December 31, 2013, total unrecognized compensation expense related to restricted stock was $7,525, which will be recognized over a weighted average remaining period of 4.1 years.

Organizational_Realignment

Organizational Realignment	12 Months Ended
	Dec. 31, 2013
Restructuring And Related Activities [Abstract]	'
Organizational Realignment	'
	15. Organizational Realignment
	During October 2013, the Firm commenced a plan to streamline its leadership and support-related structure to better align a higher percentage of personnel in roles that are closest to the customer through an organizational realignment. The new organizational design is intended to provide improved accountability and deliver better results for our clients, consultants and core personnel. As a result of the organizational realignment, Kforce incurred severance and termination-related expenses of $7,097 during the three months ended December 31, 2013, which is recorded within selling, general and administrative expenses in the consolidated statement of operations and comprehensive income (loss). The severance and termination-related expenses included the acceleration of previously unrecorded stock compensation expense of $1,078. Additionally, in connection with the realignment and succession planning, the Compensation Committee approved discretionary bonuses of $3,606 paid to a broad group of senior management during the fourth quarter of 2013. As of December 31, 2013, Kforce accrued approximately $1,416 of severance and termination-related expenses, which is expected to be paid during the first quarter of 2014 and is recorded in accounts payable and other accrued liabilities on the Consolidated Balance Sheet. There were no realignment charges incurred during the years ended December 31, 2012 or 2011.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	16. Commitments and Contingencies
	Lease Commitments
	Kforce leases space and operating assets under operating and capital leases expiring at various dates, with some leases cancelable upon 30 to 90 days notice and with some leases containing escalation in rent clauses. The leases require Kforce to pay taxes, insurance and maintenance costs, in addition to rental payments.
	Future minimum lease payments, inclusive of accelerated lease payments, under non-cancelable capital and operating leases are summarized as follows:
		2014		2015		2016		2017		2018		Thereafter		Total
	Capital leases
	Present value of payments	$	1,256	$	1,000	$	313	$	51	$	—	$	—	$	2,620
	Interest		2,283		2,212		959		8		—		—		5,462
	Capital lease payments	$	3,539	$	3,212	$	1,272	$	59	$	—	$	—	$	8,082
	Operating leases
	Facilities	$	5,373	$	3,635	$	2,342	$	748	$	424	$	19	$	12,541
	Furniture and equipment		37		18		8		—		—		—		63
	Total operating leases	$	5,410	$	3,653	$	2,350	$	748	$	424	$	19	$	12,604
	Total leases	$	8,949	$	6,865	$	3,622	$	807	$	424	$	19	$	20,686
	The present value of the minimum lease payments for capital lease obligations has been classified in other current liabilities and long-term debt – other, according to their respective maturities. Rental expense under operating leases was $5,265, $5,225 and $6,027 for the years ended December 31, 2013, 2012 and 2011, respectively.
	Purchase Commitments
	Kforce has entered into various commitments including, among others, a compensation software hosting and licensing arrangement, and a commitment for data center fees for certain of our information technology applications. As of December 31, 2013, these commitments amounted to approximately $10,787 and are expected to be paid as follows: $6,165 in 2014; $3,762 in 2015; $860 in 2016; and $0 in 2017 and 2018.
	Letters of Credit
	Kforce provides letters of credit to certain vendors in lieu of cash deposits. At December 31, 2013, Kforce had letters of credit outstanding for workers’ compensation and other insurance coverage totaling $2,360, and for facility lease deposits totaling $305.
	Litigation
	On June 18, 2013, Kforce, along with other staffing firms, was named as a defendant in a class action lawsuit filed in the Orange County Superior Court of the State of California. The plaintiff alleges that a class of current and former Kforce employees working in California was denied compensation for the time they spent interviewing with current and potential clients of Kforce, over a period covering four years prior to the filing of the complaint. The plaintiff seeks recovery in an unspecified amount for this alleged unpaid compensation, the alleged failure of Kforce to provide them with accurate wage statements, the alleged improper use of debit cards as an employee payment mechanism in certain circumstances, alleged unfair competition, and statutory penalties, attorney’s fees and other damages. On August 30, 2013, Kforce moved the matter to the U.S. District Court of the Central District of California, Case No. 8:13cv1356. On January 30, 2014, the U.S. District Court of Central District of California substantially granted summary judgment in favor of Kforce with the exception of the plaintiff’s claim for waiting time penalties, which is an individual claim and not part of the class action. The case has been remanded to Orange County Superior Court. Absent a successful appeal of the class action allegations by the plaintiff, this case does not present a reasonable possibility of material loss. At this stage of the litigation for the individual claim, it is not reasonable to estimate the outcome or a range of loss, should a loss occur. Accordingly, no amounts have been provided for in Kforce’s Consolidated Financial Statements.
	On February 19, 2014, the United States District Court for the Middle District of Florida unsealed a qui tam complaint that had been filed by a terminated former employee in June of last year. The complaint was filed against Kforce and Kforce Government Solutions Inc. (“KGS”). It alleges False Claims Act and federal and state whistleblower statute violations and certain accounting irregularities, as well as employment law and defamation claims. The United States government has not intervened in this action at this time. While the qui tam action was first disclosed to Kforce and KGS on February 19, 2014, counsel for the former employee previously informed Kforce and KGS of substantially similar allegations in a postemployment demand letter. After the allegations were raised, the matter was referred to the Audit Committee of Kforce’s Board of Directors for investigation. The Audit Committee retained experienced, independent counsel for an investigation. With the help of forensic accountants, the investigators concluded that the False Claims Act and accounting irregularity allegations raised in the demand letter were unsupported by material, credible evidence. Due to, among other things, this independent investigation, Kforce and KGS believe the allegations in the complaint are factually inaccurate and without merit. Kforce and KGS intend to vigorously defend the litigation. At this stage of the litigation, it is not reasonable to estimate the outcome or a range of loss, should a loss occur. Accordingly, no amounts have been provided for in Kforce’s Consolidated Financial Statements.
	In the ordinary course of its business, Kforce is from time to time threatened with litigation or named as a defendant in various lawsuits and administrative proceedings. While management does not expect any of these other matters to have a material adverse effect on the Company’s results of operations, financial position or cash flows, litigation is subject to certain inherent uncertainties. Kforce maintains liability insurance in such amounts and with such coverage and deductibles as management believes is reasonable. The principal liability risks that Kforce insures against are workers’ compensation, personal injury, bodily injury, property damage, directors’ and officers’ liability, errors and omissions, employment practices liability and fidelity losses. There can be no assurance that Kforce’s liability insurance will cover all events or that the limits of coverage will be sufficient to fully cover all liabilities.
	Kforce is not aware of any litigation that would reasonably be expected to have a material effect on its results of operations, its cash flows or its financial condition.
	Tax Audits
	During 2013, the IRS finished an examination of Kforce’s US income tax return for 2009 with no material adjustments, and no settlements. During 2013, the IRS commenced a Limited Issue Focused Exam of Kforce’s 2010 and 2011 U.S income tax returns. No material liabilities and expected to result from this ongoing examination. During 2012, Kforce was audited by state taxing authorities for sales, income and gross receipts taxes, which in some cases covered multiple years. In 2012, the tax audits were settled for $1,624 in cash.
	Employment Agreements
	Kforce has entered into employment agreements with certain executives that provide for minimum compensation, salary and continuation of certain benefits for a six-month to a three-year period under certain circumstances. Certain of the agreements also provide for a severance payment of one to three times annual salary and one half to three times average annual bonus if such an agreement is terminated without good cause by the employer or for good reason by the employee. These agreements contain certain post-employment restrictive covenants. Kforce’s liability at December 31, 2013 was approximately $39,804 if all of the employees under contract were terminated without good cause by the employer or the employees resigned for good reason following a change in control and $12,686 if all of the employees under contract were terminated by Kforce without good cause or the employees resigned for good reason in the absence of a change of control.
	Kforce has not recorded any liability related to the employment agreements as no events have occurred that would require payment under the agreements.

Reportable_Segments

Reportable Segments	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Reportable Segments	'
	17. Reportable Segments
	Kforce’s reportable segments are as follows: (i) Tech, (ii) FA, (iii) HIM and (iv) GS. This determination is supported by, among other factors: the existence of segment presidents responsible for the operations of each segment and who also report directly to our chief operating decision make (“CODM”), the nature of the segment’s operations and information presented to the Board of Directors and our CODM. The Firm’s realignment plan, as described more fully in Note 15 – “Organizational Realignment”, did not cause any changes to the composition of our reportable segments.
	Historically, and through our year ended December 31, 2013, Kforce has generated only sales and gross profit information on a segment basis. Substantially all operations and long-lived assets are located in the United States. We do not report total assets separately by segment as our operations are largely combined. The following table has been updated to reflect the disposition of KCR. As described in Note 2 – “Discontinued Operations,” all revenues and gross profit associated with the discontinued operation have been recorded within income from discontinued operations, net of tax, in the consolidated statement of operations and comprehensive income (loss).
	The following table provides information concerning the operations of our segments for the years ended December 31, 2013, 2012 and 2011:
		Technology		Finance and		Health Information		Government		Total
				Accounting		Management		Solutions
	2013
	Net service revenues
	Flexible billings	$	720,179	$	213,158	$	77,745	$	91,949	$	1,103,031
	Search fees		19,183		29,259		414		—		48,856
	Total revenue	$	739,362	$	242,417	$	78,159	$	91,949	$	1,151,887
	Gross profit	$	219,360	$	93,663	$	25,236	$	31,353	$	369,612
	2012
	Net service revenues
	Flexible billings	$	655,062	$	211,797	$	76,517	$	91,424	$	1,034,800
	Search fees		20,525		26,679		475		—		47,679
	Total revenue	$	675,587	$	238,476	$	76,992	$	91,424	$	1,082,479
	Gross profit	$	200,738	$	91,124	$	27,347	$	28,724	$	347,933
	2011
	Net service revenues
	Flexible billings	$	606,238	$	194,359	$	68,181	$	92,449	$	961,227
	Search fees		17,774		25,216		530		—		43,520
	Total revenue	$	624,012	$	219,575	$	68,711	$	92,449	$	1,004,747
	Gross profit	$	182,862	$	82,028	$	24,476	$	28,381	$	317,747

Quarterly_Financial_Data_Unaud

Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]	'
Quarterly Financial Data (Unaudited)	'
	18. Quarterly Financial Data (Unaudited)
	The quarterly financial data presented below has been adjusted, where applicable, to reflect the discontinued operations of KCR, which is more fully described in Note 2 – “Discontinued Operations.”
		THREE MONTHS ENDED
		March 31			June 30			September 30			December 31
	2013
	Net service revenues	$	265,627		$	283,689		$	299,652		$	302,919
	Gross profit		83,336			92,847			97,312			96,117
	Income from continuing operations, net of income taxes		3,094			6,948			8,979			(8,234	)
	Income from discontinued operations, net of income taxes		—			—			—			—
	Net income (loss)		3,094			6,948			8,979			(8,234	)
	Earnings (loss) per share-basic	$	0.09		$	0.21		$	0.27		$	(0.25	)
	Earnings (loss) per share-diluted	$	0.09		$	0.21		$	0.27		$	(0.25	)
	2012
	Net service revenues	$	268,350		$	274,129		$	270,161		$	269,839
	Gross profit		80,825			89,766			88,762			88,580
	(Loss) income from continuing operations, net of income taxes		(17,727	)		(33,182	)		9,275			5,922
	Income (loss) from discontinued operations, net of income taxes		21,803			15			(7	)		198
	Net income (loss)		4,076			(33,167	)		9,268			6,120
	Earnings (loss) per share-basic	$	0.12		$	(0.90	)	$	0.26		$	0.17
	Earnings (loss) per share-diluted	$	0.12		$	(0.90	)	$	0.26		$	0.17
	During the fourth quarter of 2013, the Firm executed an organizational realignment plan and incurred severance and termination-related expenses of $7,097 and a Compensation Committee approved discretionary bonuses related to the realignment of $3,606. Additionally, during the fourth quarter of 2013, Kforce recorded a goodwill impairment charge of $14,510.
	During the first quarter of 2012, in connection with the disposition of KCR, the Board exercised its discretion, as permitted under the Kforce Inc. 2006 Stock Incentive Plan, to accelerate the vesting, for tax planning purposes, of substantially all of the outstanding and unvested restricted stock and ALTI effective March 31, 2012. The acceleration resulted in the recognition of previously unrecognized compensation expense of $31,297, which includes $784 of payroll taxes. This expense has been classified in selling, general and administrative expenses in the accompanying consolidated statements of operations and comprehensive income (loss).
	Additionally, during the second quarter of 2012, Kforce recorded an estimated goodwill impairment charge of $65,300. Kforce completed the step 2 impairment analysis and recorded an additional goodwill impairment charge of $3,858 during the fourth quarter of 2012.

Supplemental_Cash_Flow_Informa

Supplemental Cash Flow Information	12 Months Ended
	Dec. 31, 2013
Supplemental Cash Flow Elements [Abstract]	'
Supplemental Cash Flow Information	'
	19. Supplemental Cash Flow Information
	Supplemental cash flow information is as follows for the year ended December 31:
		2013		2012		2011
	Cash paid during the period for:
	Income taxes, net	$	14,789	$	14,456	$	8,747
	Interest, net	$	800	$	554	$	838
	Non-Cash Transaction Information:
	Tax benefit from disqualifying dispositions of stock options and restricted stock	$	15	$	36	$	145
	Shares tendered in payment of exercise price of stock options and SARs	$	—	$	161	$	2,401
	Common Stock transactions:
	Employee stock purchase plan	$	613	$	647	$	705
	Equipment acquired under capital leases	$	1,929	$	672	$	1,166

Schedule_II_Valuation_and_Qual

Schedule II Valuation and Qualifying Accounts and Reserves Supplemental Schedule	12 Months Ended
	Dec. 31, 2013
Valuation And Qualifying Accounts [Abstract]	'
Schedule II Valuation and Qualifying Accounts and Reserves Supplemental Schedule	'
	SCHEDULE II
	KFORCE INC. AND SUBSIDIARIES
	VALUATION AND QUALIFYING
	ACCOUNTS AND RESERVES
	SUPPLEMENTAL SCHEDULE
	(in thousands)
	COLUMN A		COLUMN B				COLUMN C						COLUMN D			COLUMN E
	DESCRIPTION		BALANCE AT				CHARGED TO			CHARGED			DEDUCTIONS (b)			BALANCE AT
			BEGINNING OF				COSTS AND			TO OTHER						END OF
							EXPENSES			ACCOUNTS (a)						PERIOD
							(RECOVERY)
	Accounts receivable reserves			2011	$	4,021		(1,103	)		166			(627	)	$	2,457
				2012	$	2,457		1,249			(70	)		(1,483	)	$	2,153
				2013	$	2,153		382			(54	)		(453	)	$	2,028
	(a)	Charged to other accounts includes the provision for fallouts of search placements that has been deducted from net service revenues in the accompanying consolidated statements of income and comprehensive income (loss).
	(b)	Deductions include write-offs of uncollectible accounts receivable and fallouts of search placements that have been charged against the allowance for doubtful accounts, fallouts and other accounts receivables reserves.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Organization and Nature of Operations	'
	Organization and Nature of Operations
	Kforce Inc. and subsidiaries (collectively, “Kforce”) provide professional staffing services and solutions to customers in the following segments: Technology (“Tech”), Finance and Accounting (“FA”), Health Information Management (“HIM”) and Government Solutions (“GS”). Kforce provides flexible staffing services and solutions on both a temporary and full-time basis. Kforce operates through its corporate headquarters in Tampa, Florida and 62 field offices located throughout the United States (the “U.S.”). Additionally, one of our subsidiaries, Kforce Global Solutions, Inc. (“Global”), provides information technology outsourcing services internationally through an office in Manila, Philippines. Our international operations comprised approximately 2% of net service revenues for each of the three years ended December 31, 2013 and are included in our Tech segment.
	Kforce serves clients from the Fortune 1000, the Federal Government, state and local governments, local and regional companies and small to mid-sized companies.
Basis of Presentation	'
	Basis of Presentation
	The consolidated financial statements of Kforce have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”) and the rules of the Securities and Exchange Commission (“SEC”).
Principles of Consolidation	'
	Principles of Consolidation
	The consolidated financial statements include the accounts of Kforce Inc. and its wholly-owned subsidiaries. References in this document to “Kforce,” “the Company,” “we,” “our” or “us” refer to Kforce Inc. and its subsidiaries, except where the context indicates otherwise. All intercompany transactions and balances have been eliminated in consolidation.
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 important of these estimates and assumptions relate to the following: accounting for goodwill and identifiable intangible assets and any related impairment; stock-based compensation; obligations for pension and postretirement benefit plans; self-insured liabilities for workers’ compensation and health insurance; allowance for doubtful accounts, fallouts and other accounts receivable reserves and accounting for income taxes. Although these and other estimates and assumptions are based on the best available information, actual results could be materially different from these estimates.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents
	Kforce classifies all highly liquid investments with an original initial maturity of three months or less as cash equivalents. Cash and cash equivalents consist of cash on hand with banks, either in commercial accounts, or overnight interest-bearing money market accounts and at times may exceed federally insured limits. Cash and cash equivalents are stated at cost, which approximates fair value due to the short duration of their maturities.
Accounts Receivable Reserves	'
	Accounts Receivable Reserves
	Kforce establishes its reserves for expected credit losses, fallouts, early payment discounts and revenue adjustments based on past experience and estimates of potential future activity. Specific to our allowance for doubtful accounts, which comprises a majority of our accounts receivable reserves, Kforce performs an ongoing analysis of factors including recent write-off and delinquency trends, a specific analysis of significant receivable balances that are past due, the concentration of accounts receivable among clients and higher-risk sectors, and the current state of the U.S. economy. Trade receivables are written off by Kforce after all reasonable collection efforts have been exhausted.
	Accounts receivable reserves as a percentage of gross accounts receivable was 1.1% and 1.4% as of December 31, 2013 and December 31, 2012, respectively.
Revenue Recognition	'
	Revenue Recognition
	We earn revenues from two primary sources: Flexible billings and Search fees. Flexible billings are recognized as the services are provided by Kforce’s temporary employees, who are Kforce’s legal employees while they are working on assignments. Kforce pays all related costs of such employment, including workers’ compensation insurance, state and federal unemployment taxes, social security and certain fringe benefits. Search fees are recognized by Kforce when employment candidates accept offers of permanent employment and are scheduled to commence employment within 30 days. Kforce records revenues net of an estimated reserve for “fallouts,” which is based on Kforce’s historical fallout experience. Fallouts occur when a candidate does not remain employed with the client through the contingency period, which is typically 90 days or less.
	Net service revenues represent services rendered to customers less credits, discounts, rebates and allowances. Revenues include reimbursements of travel and out-of-pocket expenses (“billable expenses”) with equivalent amounts of expense recorded in direct costs of services.
	Our GS segment generates its revenues under contracts that are, in general, greater in duration than our other segments and which can often span several years, inclusive of renewal periods. In addition, our GS segment generates substantially all of its revenues under time-and-materials (which account for the majority of this segment’s contracts), fixed-price and cost-plus arrangements. Our GS segment does not generate any Search fees. Except as provided below, Kforce considers amounts to be earned once evidence of an arrangement has been obtained, services are delivered, fees are fixed or determinable, and collectability is reasonably assured.
		•		Revenues for time-and-materials contracts, which accounts for approximately 73% of this segment’s revenue, are recorded based on contractually established billing rates at the time services are provided.
		•		Revenues on fixed-price contracts are recognized on the basis of the estimated percentage-of-completion. Approximately 15% of this segment’s revenues are recognized under this method. Progress towards completion is typically measured based on costs incurred as a proportion of estimated total costs or other measures of progress when applicable. Profit in a given period is reported at the expected profit margin to be achieved on the overall contract.
		•		Revenue on cost-plus arrangements is recognized based on allowable costs incurred plus an estimate of the applicable fees earned. Approximately 12% of this segment’s revenues are recognized under these arrangements.
Direct Costs of Services	'
	Direct Costs of Services
	Direct costs of services are composed primarily of payroll wages, payroll taxes, payroll-related insurance for Kforce’s flexible employees, and subcontractor costs. Direct costs of permanent placement services primarily consist of reimbursable expenses. Direct costs of services exclude depreciation and amortization expense, which is presented on a separate line in the accompanying consolidated statements of operations and comprehensive income (loss).
Income Taxes	'
	Income Taxes
	Kforce accounts for income taxes using the asset and liability approach to the recognition of deferred tax assets and liabilities for the expected future tax consequences of differences between the financial statement carrying amounts and the tax basis of assets and liabilities. Unless it is “more likely than not” that a deferred tax asset can be utilized to offset future taxes, a valuation allowance is recorded against that asset. The tax benefits of deductions attributable to employees’ disqualifying dispositions of shares obtained from incentive stock options, exercises of non-qualified stock options, and vesting of restricted stock are reflected as increases in additional paid-in capital.
	Kforce evaluates tax positions that have been taken or are expected to be taken in its tax returns, and records a liability for uncertain tax positions. Kforce uses a two-step approach to recognize and measure uncertain tax positions. First, tax positions are recognized if the weight of available evidence indicates that it is more likely than not that the position will be sustained upon examination, including resolution of related appeals or litigation processes, if any. Second, tax positions are measured as the largest amount of tax benefit that has a greater than 50% likelihood of being realized upon settlement. Kforce recognizes interest and penalties related to unrecognized tax benefits in the provision for income taxes in the accompanying consolidated financial statements.
Fair Value Measurements	'
	Fair Value Measurements
	Kforce uses the framework established by the Financial Accounting Standards Board (“FASB”) for measuring fair value and disclosures about fair value measurements. Kforce uses fair value measurements in areas that include, but are not limited to: the impairment testing of goodwill and long-lived assets; share-based compensation arrangements; valuing the investment in bond mutual funds within the Kforce’s deferred compensation plan; our debt and capital lease obligations. The carrying values of cash and cash equivalents, accounts receivable, accounts payable, and other current assets and liabilities approximate fair value because of the short-term nature of these instruments. Using available market information and appropriate valuation methodologies, Kforce has determined the estimated fair value measurements; however, considerable judgment is required in interpreting data to develop the estimates of fair value.
Fixed Assets	'
	Fixed Assets
	Fixed assets are carried at cost, less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the assets. The cost of leasehold improvements is amortized using the straight-line method over the shorter of the estimated useful lives of the assets or the terms of the related leases, which generally range from three to five years.
Goodwill and Other Intangible Assets	'
	Goodwill and Other Intangible Assets
	Goodwill
	Kforce performs a goodwill impairment analysis, using the two-step analysis method, on an annual basis and whenever events or changes in circumstances indicate that the carrying value may not be recoverable unless it is determined, based upon a review of the qualitative factors of a reporting unit, that it is more likely than not that the fair value of a reporting unit exceeds its carrying amount, including goodwill. Under the two-step analysis method, the recoverability of goodwill is measured at the reporting unit level, which Kforce has determined to be consistent with its operating segments; by comparing the reporting unit’s carrying amount, including goodwill, to the fair market value of the reporting unit. Kforce determines the fair market value of its reporting units based on a weighting of the present value of projected future cash flows (the “income approach”) and the use of comparative market approach under both the guideline company method and guideline transaction method (collectively, the “market approach”). Fair market value using the income approach is based on Kforce’s estimated future cash flows on a discounted basis. The market approach compares each of Kforce’s reporting units to other comparable companies based on valuation multiples derived from operational and transactional data to arrive at a fair value. Factors requiring significant judgment include, among others, the determination of comparable companies, assumptions related to forecasted operating results, discount rates, long-term growth rates, and market multiples. Changes in economic or operating conditions, or changes in Kforce’s business strategies, that occur after the annual impairment analysis and which impact these assumptions, may result in a future goodwill impairment charge, which could be material to Kforce’s consolidated financial statements.
	Other Intangible Assets
	Identifiable intangible assets arising from certain of Kforce’s acquisitions include non-compete and employment agreements, contractual relationships, customer contracts, and a trade name and trademark. For definite-lived intangible assets, Kforce has determined that the straight-line method is an appropriate methodology to allocate the cost over the period of expected benefit, which ranges from one to 15 years. The impairment evaluation for indefinite-lived intangible assets, which for Kforce consist of a trademark and trade name, is conducted on an annual basis or more frequently if events or changes in circumstances indicate that an asset may be impaired.
Impairment of Long-Lived Assets	'
	Impairment of Long-Lived Assets
	Kforce reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. Recoverability of long-lived assets is measured by a comparison of the carrying amount of the asset group to the future undiscounted net cash flows expected to be generated by those assets. If such assets are considered to be impaired, the impairment charge recognized is the amount by which the carrying amounts of the assets exceed the fair value of the assets, as determined based on the present value of projected future cash flows.
Capitalized Software	'
	Capitalized Software
	Kforce purchases, develops, and implements new computer software to enhance the performance of our Company-wide technology infrastructure. Direct internal costs, such as payroll and payroll-related costs, and external costs incurred during the development stage of each project, are capitalized and classified as capitalized software. Kforce capitalized development-stage implementation costs of $970, $1,718 and $2,876 during the years ended December 31, 2013, 2012 and 2011, respectively. Capitalized software development costs are classified as other assets, net in the accompanying consolidated balance sheets and are being amortized over the estimated useful lives of the software, which range from one to five years, using the straight-line method.
Commissions	'
	Commissions
	Our associates make placements and earn commissions as a percentage of actual revenues (for Search revenue) or gross profit (for Flex revenue) pursuant to a calendar-year-basis commission plan. The amount of commissions paid as a percentage of revenues or gross profit increases as volume increases. Kforce accrues commissions for actual revenues or gross profit at a percentage equal to the percent of total expected commissions payable to total revenues or gross profit for the year, as applicable.
Stock-Based Compensation	'
	Stock-Based Compensation
	Kforce accounts for stock-based compensation by measuring the cost of employee services received in exchange for an award of equity instruments based on the grant-date fair value of the award. The cost is recognized over the requisite service period, net of estimated forfeitures. If the actual number of forfeitures differs from those estimated, additional adjustments to compensation expense may be required in future periods.
Workers' Compensation	'
	Workers’ Compensation
	Kforce retains the economic burden for the first $250 per occurrence in workers’ compensation claims except: (i) in states that require participation in state-operated insurance funds and (ii) for its GS segment which is fully insured for workers’ compensation claims. Workers’ compensation includes ongoing health care and indemnity coverage for claims and may be paid over numerous years following the date of injury. Workers’ compensation expense includes insurance premiums paid, claims administration fees charged by Kforce’s workers’ compensation administrator, premiums paid to state-operated insurance funds and an estimate for Kforce’s liability for Incurred but Not Reported (“IBNR”) claims and for the ongoing development of existing claims.
	Kforce estimates its workers’ compensation liability based upon historical claims experience, actuarially determined loss development factors, and qualitative considerations such as claims management activities.
Taxes Assessed by Governmental Agencies - Revenue Producing Transactions	'
	Taxes Assessed by Governmental Agencies – Revenue Producing Transactions
	Kforce collects sales tax for various taxing authorities and it is our policy to record these amounts on a net basis; thus, sales tax amounts are not included in net service revenues.
Health Insurance	'
	Health Insurance
	Except for certain fully insured health insurance lines of coverage, Kforce retains the risk of loss for each health insurance plan participant up to $275 in claims annually. Additionally, for all claim amounts exceeding $275, Kforce retains the risk of loss up to an aggregate annual loss of those claims of $500. For its partially self-insured lines of coverage, health insurance costs are accrued using estimates to approximate the liability for reported claims and IBNR claims, which are primarily based upon an evaluation of historical claims experience, actuarially-determined completion factors and a qualitative review of our health insurance exposure including the extent of outstanding claims and expected changes in health insurance costs.
Accounting for Postretirement Benefits	'
	Accounting for Postretirement Benefits
	Kforce recognizes the overfunded or underfunded status of its defined benefit postretirement plans as an asset or liability in its consolidated balance sheets and recognizes changes in that funded status in the year in which the changes occur through other comprehensive income (loss). Kforce also measures the funded status of the defined benefit postretirement plans as of the date of its fiscal year-end, with limited exceptions.
	Amortization of a net unrecognized gain or loss in accumulated other comprehensive income (loss) is included as a component of net periodic benefit cost and net periodic postretirement benefit cost if, as of the beginning of the year, that net gain or loss exceeds 10% of the greater of the projected benefit obligation or accumulated postretirement benefit obligation. If amortization is required, the minimum amortization shall be that excess divided by the average remaining service period of active plan participants.
Earnings Per Share	'
	Earnings per Share
	Basic earnings (loss) per share is computed as earnings (loss) divided by the weighted average number of common shares outstanding during the period. Basic weighted average shares outstanding excludes unvested shares of restricted stock. Diluted earnings (loss) per common share is computed by dividing the earnings (loss) attributable to common shareholders for the period by the weighted average number of common shares outstanding during the period plus the dilutive effect of stock options and other 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. Weighted average shares outstanding for purposes of computing diluted earnings per common share excludes contingently issuable unvested restricted stock unless the performance condition has been achieved as of the end of the applicable reporting period.
	The following table sets forth the computation of basic and diluted earnings (loss) per share for the three years ended December 31, 2013:
			Years Ended December 31,
			2013		2012			2011
	Numerator:
	Income (loss) from continuing operations		$	10,787	$	(35,712	)	$	19,056
	Income from discontinued operations, net of tax			—		22,009			8,100
	Net income (loss)		$	10,787	$	(13,703	)	$	27,156
	Denominator:
	Weighted average shares outstanding – basic			33,511		35,791			37,835
	Common stock equivalents			132		—			996
	Weighted average shares outstanding – diluted			33,643		35,791			38,831
	Earnings (loss) per share – basic:
	From continuing operations		$	0.32	$	(1.00	)	$	0.5
	From discontinued operations			—		0.62			0.22
	Earnings (loss) per share – basic		$	0.32	$	(0.38	)	$	0.72
	Earnings (loss) per share – diluted:
	From continuing operations		$	0.32	$	(1.00	)	$	0.49
	From discontinued operations			—		0.62			0.21
	Earnings (loss) per share – diluted		$	0.32	$	(0.38	)	$	0.7
	For the year ended December 31, 2011, the total weighted average awards to purchase or receive 33 shares of common stock was not included in the computation of diluted earnings per share, because these would have had an anti-dilutive effect on earnings per share. Given that Kforce had a loss from continuing operations for the year ended December 31, 2012, the calculation of diluted loss per share from continuing operations, earnings from discontinued operations, and net loss is computed using basic weighted average common shares outstanding. For the year ended December 31, 2013, there were no shares of common stock excluded from the computation of diluted earnings per share.
Treasury Stock	'
	Treasury Stock
	Kforce’s Board of Directors (“Board”) may authorize share repurchases of Kforce’s common stock. Shares repurchased under Board authorizations are held in treasury for general corporate purposes, including issuances under various employee share-based award plans. Treasury shares are accounted for under the cost method and reported as a reduction of stockholders’ equity in the accompanying consolidated financial statements.
Comprehensive Income (Loss)	'
	Comprehensive Income (Loss)
	Accumulated other comprehensive income (loss) represents the net after-tax impact of unrecognized actuarial gains and losses related to: (i) the supplemental executive retirement plan and supplemental executive retirement health plan, both of which cover a limited number of executives and (ii) a defined benefit plan covering all eligible employees in our Philippine operations. Because each of these plans is unfunded as of December 31, 2013, the actuarial gains and losses arise as a result of the actuarial experience of the plans as well as changes in actuarial assumptions in measuring the associated obligation as of year-end, or an interim date if any re-measurement is necessary. This information is provided in our consolidated statements of operations and comprehensive income (loss).
Dividends	'
	Dividends
	Kforce’s Board may, at its discretion, declare and pay dividends on the outstanding shares of Kforce’s common stock out of retained earnings, subject to statutory requirements. Dividends for any outstanding and unvested restricted stock as of the record date are awarded in the form of additional shares of restricted stock, at the same rate as the cash dividend on common stock and based on the closing stock price, and have the same vesting terms as the outstanding and unvested restricted stock. The following summarizes the cash dividends declared for the three years ended December 31:
			YEARS ENDED DECEMBER 31,
			2013		2012			2011
	Cash dividends declared per share		$	0.1	$	1			—
	Kforce currently expects to continue to declare and pay quarterly dividends of an amount similar to its December 2013 dividend of $0.10 per share. However, the declaration and payment of future dividends are discretionary and will be subject to determination by Kforce’s Board of Directors each quarter following its review of the Firm’s financial performance.
New Accounting Standards	'
	New Accounting Standards
	In July 2013, the FASB issued authoritative guidance regarding presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. This guidance is to be applied for annual reporting periods beginning on or after December 15, 2013 and interim periods within those annual periods. Kforce does not expect the adoption of this guidance to have a material impact on its future consolidated financial statements.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Computation of Basic and Diluted Earnings Per Share	'
	The following table sets forth the computation of basic and diluted earnings (loss) per share for the three years ended December 31, 2013:
		Years Ended December 31,
		2013		2012			2011
	Numerator:
	Income (loss) from continuing operations	$	10,787	$	(35,712	)	$	19,056
	Income from discontinued operations, net of tax		—		22,009			8,100
	Net income (loss)	$	10,787	$	(13,703	)	$	27,156
	Denominator:
	Weighted average shares outstanding – basic		33,511		35,791			37,835
	Common stock equivalents		132		—			996
	Weighted average shares outstanding – diluted		33,643		35,791			38,831
	Earnings (loss) per share – basic:
	From continuing operations	$	0.32	$	(1.00	)	$	0.5
	From discontinued operations		—		0.62			0.22
	Earnings (loss) per share – basic	$	0.32	$	(0.38	)	$	0.72
	Earnings (loss) per share – diluted:
	From continuing operations	$	0.32	$	(1.00	)	$	0.49
	From discontinued operations		—		0.62			0.21
	Earnings (loss) per share – diluted	$	0.32	$	(0.38	)	$	0.7
Summary of Cash Dividends Declared	'
	The following summarizes the cash dividends declared for the three years ended December 31:
		YEARS ENDED DECEMBER 31,
		2013		2012			2011
	Cash dividends declared per share	$	0.1	$	1			—

Discontinued_Operations_Tables

Discontinued Operations (Tables)	12 Months Ended
	Dec. 31, 2013
Discontinued Operations And Disposal Groups [Abstract]	'
Summary of Results from Discontinued Operations	'
	The following summarizes the results from discontinued operations for the two years ended December 31:
		YEARS ENDED DECEMBER 31,
		2012		2011
	Net service revenues	$	29,808	$	106,172
	Direct costs of services and operating expenses		26,491		92,775
			3,317		13,397
	Gain on sale of discontinued operations		36,418		—
	Income from discontinued operations, before income taxes		39,735		13,397
	Income tax expense		17,726		5,297
	Income from discontinued operations, net of income taxes	$	22,009	$	8,100

Fixed_Assets_Tables

Fixed Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Property Plant And Equipment [Abstract]	'
Major Classifications of Fixed Assets and Related Useful Lives	'
	Major classifications of fixed assets and related useful lives are summarized as follows:
				DECEMBER 31,
		USEFUL LIFE		2013			2012
	Land			$	5,892		$	5,892
	Building and improvements		5-40 years		25,191			25,121
	Furniture and equipment		5-7 years		9,701			8,232
	Computer equipment		3-5 years		8,966			7,269
	Leasehold improvements		3-5 years		6,894			4,720
	Capital leases		3-5 years		4,306			5,902
					60,950			57,136
	Less accumulated depreciation and amortization				(24,222	)		(22,253	)
				$	36,728		$	34,883

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Tax Expense (Benefit), Continuing Operations	'
	The provision for income taxes from continuing operations consists of the following:
		YEARS ENDED DECEMBER 31,
		2013			2012			2011
	Current:
	Federal	$	7,119		$	(1,238	)	$	8,784
	State		1,026			(1,097	)		1,244
	Deferred		1,166			(17,519	)		830
		$	9,311		$	(19,854	)	$	10,858
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation	'
	The provision for income taxes from continuing operations shown above varied from the statutory federal income tax rate for those periods as follows:
		YEARS ENDED DECEMBER 31,
		2013			2012			2011
	Federal income tax rate		35	%		35	%		35	%
	State income taxes, net of Federal tax effect		4.2			4.7			3.3
	Non-deductible goodwill impairment		2.4			(4.1	)		—
	Non-deductible meals and entertainment		2.9			(0.7	)		1
	Other		1.8			0.8			(3.0	)
	Effective tax rate		46.3	%		35.7	%		36.3	%
Components of Deferred Tax Assets and Liabilities	'
	Deferred income tax assets and liabilities are composed of the following:
		DECEMBER 31,
		2013			2012
	Deferred taxes, current:
	Assets:
	Accounts receivable reserves	$	779		$	859
	Accrued liabilities		2,902			3,795
	Deferred compensation obligation		1,111			917
	Pension and postretirement benefit plans		19			4,191
	Other		75			71
	Deferred tax assets, current		4,886			9,833
	Liabilities:
	Prepaid expenses		(224	)		(339	)
	Deferred tax asset, net – current		4,662			9,494
	Deferred taxes, non-current:
	Assets:
	Accrued liabilities		579			258
	Deferred compensation obligation		6,896			6,622
	Stock-based compensation		773			356
	Pension and postretirement benefit plans		4,916			5,563
	Goodwill and intangible assets		11,750			10,142
	Deferred revenue		106			54
	Other		1,531			2,140
	Deferred tax assets, non-current		26,551			25,135
	Liabilities:
	Fixed assets		(2,693	)		(2,659	)
	Other		(503	)		(868	)
	Deferred tax liabilities, non-current		(3,196	)		(3,527	)
	Valuation allowance		(85	)		(85	)
	Deferred tax asset, net – non-current		23,270			21,523
	Net deferred tax asset	$	27,932		$	31,017
Income Tax Uncertainties	'
	A reconciliation of the beginning and ending amounts of unrecognized tax benefits for the years ended December 31, 2013, 2012 and 2011 is as follows:
		December 31,
		2013			2012			2011
	Beginning balance	$	133		$	72		$	191
	Additions for tax positions of prior years		269			36			10
	Additions for tax positions of current year		25			25			38
	Reductions for tax positions of prior years – lapse of applicable statutes		(24	)		—			(82	)
	Settlements		—			—			(85	)
	Ending balance	$	403		$	133		$	72

Other_Assets_Tables

Other Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]	'
Other Assets	'
		DECEMBER 31,
		2013		2012
	Assets held in Rabbi Trust	$	24,910	$	20,801
	Capitalized software, net of amortization		5,472		6,729
	Deferred loan costs, net of amortization		288		345
	Other non-current assets		321		163
		$	30,991	$	28,038

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'
Changes in the Carrying Amount of Goodwill in Total and for Each Reporting Unit	'
	The following table contains a disclosure of changes in the carrying amount of goodwill in total and for each reporting unit for the two years ended December 31, 2013:
			Technology			Finance and			Clinical			Health			Government			Total
						Accounting			Research			Information			Solutions
												Management
	Balance as of December 31, 2011		$	17,034		$	8,006		$	5,474		$	4,923		$	102,641		$	138,078
	Adjustment			—			—			36			(36	)		—			—
	Disposition of KCR (a)			—			—			(5,510	)		—			—			(5,510	)
	Impairment of goodwill			—			—			—			—			(69,158	)		(69,158	)
	Balance as of December 31, 2012		$	17,034		$	8,006		$	—		$	4,887		$	33,483		$	63,410
	Impairment of goodwill			—			—			—			—			(14,510	)		(14,510	)
	Balance as of December 31, 2013		$	17,034		$	8,006		$	—		$	4,887		$	18,973		$	48,900
	(a)	See Note 2 – “Discontinued Operations” for additional discussion.
Summary of the Gross Amount and Accumulated Impairment Losses of Goodwill	'
	The following table contains a disclosure of the gross amount and accumulated impairment losses of goodwill for Tech, FA and GS reporting units for the two years ended December 31, 2013:
			Goodwill Carrying Value by Reporting Unit as of:
			December 31, 2013			December 31, 2012			January 1, 2012
	Technology
	Gross amount		$	156,391		$	156,391		$	156,391
	Accumulated impairment losses		$	(139,357	)	$	(139,357	)	$	(139,357	)
	Carrying value		$	17,034		$	17,034		$	17,034
	Finance and Accounting
	Gross amount		$	19,766		$	19,766		$	19,766
	Accumulated impairment losses		$	(11,760	)	$	(11,760	)	$	(11,760	)
	Carrying value		$	8,006		$	8,006		$	8,006
	Government Solutions
	Gross amount		$	102,641		$	102,641		$	102,641
	Accumulated impairment losses		$	(83,668	)	$	(69,158	)	$	—
	Carrying value		$	18,973		$	33,483		$	102,641
Summary of the Gross and Net Carrying Values of Intangible Assets	'
	The gross and net carrying values of intangible assets as of December 31, 2013 and 2012, by major intangible asset class, are as follows:
			December 31, 2013			December 31, 2012
	Definite-lived intangible assets
	Customer relationships, customer contracts, and other
	Gross amount		$	27,940		$	27,936
	Accumulated amortization		$	(25,187	)	$	(24,440	)
	Carrying value		$	2,753		$	3.496
	Indefinite-lived intangible assets
	Trade name and trademark
	Gross amount		$	2,240		$	2,240
	Accumulated impairment losses		$	—		$	—
	Carrying value		$	2,240		$	2,240

Accounts_Payable_and_Other_Acc1

Accounts Payable and Other Accrued Liabilities (Tables)	12 Months Ended
	Dec. 31, 2013
Payables And Accruals [Abstract]	'
Schedule of Accounts Payable and Accrued Liabilities	'
	Accounts payable and other accrued liabilities consisted of the following:
		DECEMBER 31,
		2013		2012
	Accounts payable	$	19,445	$	22,653
	Accrued liabilities		12,376		13,552
		$	31,821	$	36,205

Accrued_Payroll_Costs_Tables

Accrued Payroll Costs (Tables)	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Components of Accrued Payroll Costs	'
	Accrued payroll costs consisted of the following:
		DECEMBER 31,
		2013		2012
	Payroll and benefits	$	43,059	$	36,172
	Payroll taxes		9,111		9,246
	Health insurance liabilities		2,993		3,114
	Workers’ compensation liabilities		1,709		1,531
		$	56,872	$	50,063

Other_Current_Liabilities_Tabl

Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Components of Other Current Liabilities	'
	Other current liabilities consisted of the following:
		DECEMBER 31,
		2013		2012
	Supplemental executive retirement plan (Note 12)	$	—	$	10,682
	Other		1,141		882
		$	1,141	$	11,564

Other_LongTerm_Liabilities_Tab

Other Long-Term Liabilities (Tables)	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Components of Other- Long Term Liabilities	'
	Other long-term liabilities consisted of the following:
		DECEMBER 31,
		2013		2012
	Deferred compensation plan (Note 12)	$	22,247	$	19,115
	Supplemental executive retirement plan (Note 12)		7,852		8,976
	Supplemental executive retirement health plan (Note 12)		2,627		3,554
	Other		3,830		2,640
		$	36,556	$	34,285

Employee_Benefit_Plans_Tables

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2013
Pretax Actuarial Gain	'
	Pretax amounts recognized in accumulated other comprehensive income (loss) as of December 31, 2013 that have not yet been recognized as components of net periodic benefit cost for all of Kforce’s defined benefit pension and postretirement plans, including the foreign defined benefit plan, consist entirely of actuarial gains and losses arising from the actuarial experience of the plans and changes in actuarial assumptions, as follows:
		Pensions			Postretirement
	Net pretax actuarial gain	$	304		$	234
Estimated Portion of the Net Actuarial Loss	'
	The estimated portion of the net actuarial loss above that is expected to be recognized as a component of net periodic benefit cost in the year ending December 31, 2014 is shown below:
		Pensions			Postretirement
	Recognized net actuarial loss (gain)	$	11		$	—
Supplemental Executive Retirement Plan [Member]	'
Actuarial Assumptions Used to Determine the Actuarial Present Value of Projected Benefit Obligations	'
	The following represents the actuarial assumptions used to determine the actuarial present value of projected benefit obligations at:
		DECEMBER 31,
		2013			2012
	Discount rate		3.75	%		2.5	%
	Expected long-term rate of return on plan assets		—			—
	Rate of future compensation increase		4	%		3.75	%
Components of Net Periodic Benefit Cost	'
	The following represents the components of net periodic benefit cost for the years ended:
		DECEMBER 31,
		2013			2012			2011
	Service cost	$	2,018		$	2,087		$	3,248
	Interest cost		471			560			482
	Amortization of actuarial loss		97			164			76
	Settlement loss		24			—			—
	Net periodic benefit cost	$	2,610		$	2,811		$	3,806
Changes in the Benefit Obligation	'
	The following represents the changes in the benefit obligation for the years ended:
		DECEMBER 31,
		2013			2012
	Projected benefit obligation, beginning	$	19,658		$	17,230
	Service cost		2,018			2,087
	Interest cost		471			560
	Actuarial experience and changes in actuarial assumptions		(1,475	)		(219	)
	Curtailment		(2,138	)		—
	Benefits Paid		(10,682	)		—
	Projected benefit obligation, ending	$	7,852		$	19,658
Projected Annual Benefit Payment	'
	Benefit payments by the SERP, which reflect the anticipated future service of participants, are expected to be paid (undiscounted) as follows:
		PROJECTED ANNUAL
		BENEFIT PAYMENTS
	2014	$	—
	2015		—
	2016		—
	2017		—
	2018		—
	2019-2023		7,494
	Thereafter		3,044
Supplemental Executive Retirement Health Plan [Member]	'
Actuarial Assumptions Used to Determine the Actuarial Present Value of Projected Benefit Obligations	'
	The following represents the actuarial assumptions used to determine the present value of the postretirement benefit obligation at:
		DECEMBER 31,
		2013			2012
	Discount rate		5	%		3.75	%
	Expected long-term rate of return on plan assets		—			—
Actuarial Assumptions Used to Determine Net Periodic Benefit Cost	'
	The following represents the actuarial assumptions used to determine the net periodic postretirement benefit cost for the years ended:
		DECEMBER 31,
		2013			2012			2011
	Discount rate		3.75	%		4	%		5.25	%
	Expected long-term rate of return on plan assets		—			—			—
Components of Net Periodic Benefit Cost	'
	The following represents the components of net periodic postretirement benefit cost for the years ended:
		DECEMBER 31,
		2013			2012			2011
	Service cost	$	649		$	919		$	324
	Interest cost		134			150			47
	Amortization of actuarial loss		86			272			6
	Curtailment gain		(359	)		—			—
	Net periodic benefit (gain) cost	$	510		$	1,341		$	377
Changes in the Benefit Obligation	'
	The following represents the changes in the postretirement benefit obligation for the years ended:
		DECEMBER 31,
		2013			2012
	Accumulated postretirement benefit obligation, beginning	$	3,574		$	3,764
	Service cost		649			919
	Interest cost		134			150
	Actuarial experience and changes in actuarial assumptions		(834	)		(1,259	)
	Curtailment		(785	)		—
	Benefits Paid		(64	)		—
	Accumulated postretirement benefit obligation, ending	$	2,674		$	3,574
Projected Annual Benefit Payment	'
	Benefit payments by the SERHP, which reflect anticipated future service of the participants, are expected to be paid (undiscounted) as follows:
		PROJECTED ANNUAL
		BENEFIT PAYMENTS
	2014	$	48
	2015		52
	2016		57
	2017		70
	2018		76
	2019-2023		743
	Thereafter		7,491
Health Care Cost Trend Rates	'
	The following represents the assumed health care cost trend rates used to determine the postretirement benefit obligations for the years ended:
		DECEMBER 31,
		2013			2012
	Health care cost trend rate assumed for next year		7.5	%		7.5	%
	Rate to which the cost trend rate is assumed to decline to (ultimate trend rate)		5	%		5	%
	Year that the rate reaches the ultimate trend rate		2018			2017
One Percent Change in Assumed Health Care Cost Trend Rates	'
	A one percent change in assumed health care cost trend rates would have the following effects:
		One Percentage Point
		Increase			Decrease
	Effect of total of service and interest cost	$	73		$	(59	)
	Effect on postretirement benefit obligation	$	459		$	(374	)
Weighted Average [Member] | Supplemental Executive Retirement Plan [Member]	'
Actuarial Assumptions Used to Determine Net Periodic Benefit Cost	'
	The following represents the weighted average actuarial assumptions used to determine net periodic benefit cost for the years ended:
		DECEMBER 31,
		2013			2012			2011
	Discount rate		2.5	%		3.25	%		4	%
	Expected long-term rate of return on plan assets		—			—			—
	Rate of future compensation increase		4	%		4	%		4	%

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Measurements on a Recurring and Non-Recurring Basis	'
	There were no transfers into or out of Level 1, 2 or 3 assets during the years ended December 31, 2013 and 2012. Transfers between levels are deemed to have occurred if the lowest level of input were to change.
	Kforce’s measurements at fair value on a recurring and non-recurring basis as of December 31, 2013 and 2012 were as follows:
	Assets/(Liabilities) Measured at Fair Value:		Asset/(Liability)			Quoted Prices in		Significant			Significant
						Active Markets		Other			Unobservable
						for Identical		Observable			Inputs (Level 3)
						Assets (Level 1)		Inputs (Level 2)
	As of December 31, 2013:
	Recurring basis:
	Money market funds (1)		$	869		$	869	$	—		$	—
	Credit Facility (2)		$	(62,642	)	$	—	$	(62,642	)	$	—
	Non-recurring basis:
	Goodwill (3)		$	48,900		$	—	$	—		$	48,900
	As of December 31, 2012:
	Recurring basis:
	Bond mutual funds (1)		$	4,124		$	4,124	$	—		$	—
	Credit Facility (2)		$	(21,000	)	$	—	$	(21,000	)	$	—
	Non-recurring basis:
	Goodwill (3)		$	63,410		$	—	$	—		$	63,410
	-1	See Note 12 – “Employee Benefit Plans” and Note 5 – “Other Assets” for additional discussion.
	-2	The carrying value of long-term debt approximates its estimated fair value as it re-prices at varying interest rates.
	-3	This amount is representative of the aggregated goodwill balance. The portion measured at fair value as of December 31, 2013 and 2012 of $18,973 and $38,483, respectively, was related to the GS segment. The remaining portion of the goodwill balance presented is at carrying value. See Note 6 – “Goodwill and Other Intangible Assets” for additional discussion.

Stock_Incentive_Plans_Tables

Stock Incentive Plans (Tables)	12 Months Ended
	Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Summary of Stock Option Activity	'
	The following table presents the activity under each of the stock incentive plans discussed above for the three years ended December 31, 2013:
			Incentive			Stock			Total			Weighted		Total
			Stock			Incentive						Average		Intrinsic
			Option			Plan						Exercise		Value of
			Plan									Price Per		Options
												Share		Exercised
	Outstanding as of December 31, 2010			587			98			685		$	9.47
	Exercised			(349	)		—			(349	)	$	8.2	$	2,931
	Forfeited/Cancelled			(12	)		—			(12	)	$	10.75
	Outstanding as of December 31, 2011			226			98			324		$	10.79
	Exercised			(65	)		(5	)		(70	)	$	10.48	$	238
	Forfeited/Cancelled			(7	)		—			(7	)	$	11
	Outstanding as of December 31, 2012			154			93			247		$	10.87
	Exercised			(57	)		(10	)		(67	)	$	8.98	$	573
	Forfeited/Cancelled			—			—			—		$	—
	Outstanding and Exercisable as of December 31, 2013			97			83			180		$	11.57
Range of Outstanding and Exercisable Option Exercise Prices	'
	The following table summarizes information about employee and director stock options under all of the plans mentioned above as of December 31, 2013:
			OUTSTANDING AND EXERCISABLE
	Range of Exercise Prices		Number of Awards (#)			Weighted Average			Weighted			Total
						Remaining			Average			Intrinsic
						Contractual Term			Exercise			Value
						(Yrs)			Price ($)
	$0.00 - $8.95			—			—		$	—		$	—
	$8.96 - $14.45			181			2.17		$	11.57			1,605
				181			2.17		$	11.57		$	1,605
Summary of Stock Appreciation Rights Activity	'
	There was no SARs activity during the year ended December 31, 2013 or 2012. Therefore, the following table presents only the activity for the year ended December 31, 2011:
			Number			Weighted Average			Total Intrinsic
			of SARs			Exercise Price Per			Value of SARs
						SAR			Exercised
	Outstanding as of December 31, 2010			169		$	10.32
	Exercised			(169	)	$	10.32		$	1,278
	Outstanding as of December 31, 2011			—		$	—
Summary of Restricted Stock Activity	'
	The following table presents the activity for the three years ended December 31, 2013:
			Number of Restricted Stock			Weighted Average			Total Intrinsic
						Grant Date			Value of Restricted
						Fair Value			Stock
									Vested
	Outstanding as of December 31, 2010			1,898		$	12.34
	Granted (a)			1,604		$	16.31
	Vested			(168	)	$	11.41		$	2,592
	Forfeited			—		$	—
	Outstanding as of December 31, 2011			3,334		$	14.3
	Granted			288		$	12.67
	Vested			(3,191	)	$	14.15		$	47,407
	Forfeited (a)			(393	)	$	16.37
	Outstanding as of December 31, 2012			38		$	12.11
	Granted			904		$	16.72
	Vested			(109	)	$	14.15		$	2,092
	Forfeited			(22	)	$	15.43
	Outstanding as of December 31, 2013			811		$	16.89
	(a)	Included in the restricted stock granted during the year ended December 31, 2011 are 689 shares of performance-based restricted stock which were subject to forfeiture based upon the level of attainment of performance conditions pre-established by the Compensation Committee. In February 2012, the Compensation Committee certified 2011 performance measures, which resulted in the forfeiture of approximately 393 of these shares of restricted stock which was consistent with estimated forfeitures during 2011 that was used for compensation expense recognition purposes.

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Summary of Future Minimum Lease Payments for Capital and Operating Lease	'
	Future minimum lease payments, inclusive of accelerated lease payments, under non-cancelable capital and operating leases are summarized as follows:
		2014		2015		2016		2017		2018		Thereafter		Total
	Capital leases
	Present value of payments	$	1,256	$	1,000	$	313	$	51	$	—	$	—	$	2,620
	Interest		2,283		2,212		959		8		—		—		5,462
	Capital lease payments	$	3,539	$	3,212	$	1,272	$	59	$	—	$	—	$	8,082
	Operating leases
	Facilities	$	5,373	$	3,635	$	2,342	$	748	$	424	$	19	$	12,541
	Furniture and equipment		37		18		8		—		—		—		63
	Total operating leases	$	5,410	$	3,653	$	2,350	$	748	$	424	$	19	$	12,604
	Total leases	$	8,949	$	6,865	$	3,622	$	807	$	424	$	19	$	20,686

Reportable_Segments_Tables

Reportable Segments (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Operations of Segments	'
	The following table provides information concerning the operations of our segments for the years ended December 31, 2013, 2012 and 2011:
		Technology		Finance and		Health Information		Government		Total
				Accounting		Management		Solutions
	2013
	Net service revenues
	Flexible billings	$	720,179	$	213,158	$	77,745	$	91,949	$	1,103,031
	Search fees		19,183		29,259		414		—		48,856
	Total revenue	$	739,362	$	242,417	$	78,159	$	91,949	$	1,151,887
	Gross profit	$	219,360	$	93,663	$	25,236	$	31,353	$	369,612
	2012
	Net service revenues
	Flexible billings	$	655,062	$	211,797	$	76,517	$	91,424	$	1,034,800
	Search fees		20,525		26,679		475		—		47,679
	Total revenue	$	675,587	$	238,476	$	76,992	$	91,424	$	1,082,479
	Gross profit	$	200,738	$	91,124	$	27,347	$	28,724	$	347,933
	2011
	Net service revenues
	Flexible billings	$	606,238	$	194,359	$	68,181	$	92,449	$	961,227
	Search fees		17,774		25,216		530		—		43,520
	Total revenue	$	624,012	$	219,575	$	68,711	$	92,449	$	1,004,747
	Gross profit	$	182,862	$	82,028	$	24,476	$	28,381	$	317,747

Quarterly_Financial_Data_Unaud1

Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]	'
Summary of Quarterly Financial Information	'
	The quarterly financial data presented below has been adjusted, where applicable, to reflect the discontinued operations of KCR, which is more fully described in Note 2 – “Discontinued Operations.”
		THREE MONTHS ENDED
		March 31			June 30			September 30			December 31
	2013
	Net service revenues	$	265,627		$	283,689		$	299,652		$	302,919
	Gross profit		83,336			92,847			97,312			96,117
	Income from continuing operations, net of income taxes		3,094			6,948			8,979			(8,234	)
	Income from discontinued operations, net of income taxes		—			—			—			—
	Net income (loss)		3,094			6,948			8,979			(8,234	)
	Earnings (loss) per share-basic	$	0.09		$	0.21		$	0.27		$	(0.25	)
	Earnings (loss) per share-diluted	$	0.09		$	0.21		$	0.27		$	(0.25	)
	2012
	Net service revenues	$	268,350		$	274,129		$	270,161		$	269,839
	Gross profit		80,825			89,766			88,762			88,580
	(Loss) income from continuing operations, net of income taxes		(17,727	)		(33,182	)		9,275			5,922
	Income (loss) from discontinued operations, net of income taxes		21,803			15			(7	)		198
	Net income (loss)		4,076			(33,167	)		9,268			6,120
	Earnings (loss) per share-basic	$	0.12		$	(0.90	)	$	0.26		$	0.17
	Earnings (loss) per share-diluted	$	0.12		$	(0.90	)	$	0.26		$	0.17

Supplemental_Cash_Flow_Informa1

Supplemental Cash Flow Information (Tables)	12 Months Ended
	Dec. 31, 2013
Supplemental Cash Flow Elements [Abstract]	'
Details of Supplemental Cash Flow Information	'
	Supplemental cash flow information is as follows for the year ended December 31:
		2013		2012		2011
	Cash paid during the period for:
	Income taxes, net	$	14,789	$	14,456	$	8,747
	Interest, net	$	800	$	554	$	838
	Non-Cash Transaction Information:
	Tax benefit from disqualifying dispositions of stock options and restricted stock	$	15	$	36	$	145
	Shares tendered in payment of exercise price of stock options and SARs	$	—	$	161	$	2,401
	Common Stock transactions:
	Employee stock purchase plan	$	613	$	647	$	705
	Equipment acquired under capital leases	$	1,929	$	672	$	1,166

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	Source
	Office
Nature of Business and Significant Accounting Policies [Line Items]	'	'	'
Number of domestic field offices of parent company	62	'	'
Percentage of net service revenue from international operations	2.00%	2.00%	2.00%
Accounts receivable reserves as percentage of gross accounts receivable	1.10%	1.40%	'
Number of primary sources of revenues	2	'	'
Maximum scheduled period to commence employment for search revenue recognition	'30 days	'	'
Maximum contingency period for occurrence of fallouts	'90 days	'	'
Minimum likelihood of being realized upon settlement of uncertain tax positions	50.00%	'	'
Development-stage implementation costs of software	$970	$1,718	$2,876
Economic burden for worker's compensation claim per occurrence	250,000	'	'
Defined benefit plan estimated amount of plan participants future benefits liability	275,000	'	'
Defined benefit plan estimated maximum amount of plan participants future benefits liability	500,000	'	'
Defined Benefit Plan amortization threshold percentage	10.00%	'	'
Common stock excluded from the computation of dilutive earnings per share	0	'	33
Dividend declared per share	$0.10	$1	'
Government Solutions [Member]	'	'	'
Nature of Business and Significant Accounting Policies [Line Items]	'	'	'
Time and material contracts revenue as percentage of aggregate segment revenue	73.00%	'	'
Percentage of revenue recognized on percentage of completion method	15.00%	'	'
Percentage of revenue recognized on cost plus arrangement method	12.00%	'	'
Minimum [Member]	'	'	'
Nature of Business and Significant Accounting Policies [Line Items]	'	'	'
Cost allocation period for definite-lived intangible assets	'1 year	'	'
Minimum [Member] | Leasehold Improvements [Member]	'	'	'
Nature of Business and Significant Accounting Policies [Line Items]	'	'	'
Amortization period	'3 years	'	'
Minimum [Member] | Computers and Software [Member]	'	'	'
Nature of Business and Significant Accounting Policies [Line Items]	'	'	'
Amortization period	'1 year	'	'
Maximum [Member]	'	'	'
Nature of Business and Significant Accounting Policies [Line Items]	'	'	'
Cost allocation period for definite-lived intangible assets	'15 years	'	'
Maximum [Member] | Leasehold Improvements [Member]	'	'	'
Nature of Business and Significant Accounting Policies [Line Items]	'	'	'
Amortization period	'5 years	'	'
Maximum [Member] | Computers and Software [Member]	'	'	'
Nature of Business and Significant Accounting Policies [Line Items]	'	'	'
Amortization period	'5 years	'	'

Summary_of_Significant_Account4

Summary of Significant Accounting Policies - Computation of Basic and Diluted Earnings Per Share (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Numerator:	'	'	'	'	'	'	'	'	'	'	'
Income (loss) from continuing operations	($8,234)	$8,979	$6,948	$3,094	$5,922	$9,275	($33,182)	($17,727)	$10,787	($35,712)	$19,056
Income from discontinued operations, net of tax	'	'	'	'	198	-7	15	21,803	'	22,009	8,100
Net income (loss)	($8,234)	$8,979	$6,948	$3,094	$6,120	$9,268	($33,167)	$4,076	$10,787	($13,703)	$27,156
Denominator:	'	'	'	'	'	'	'	'	'	'	'
Weighted average shares outstanding - basic	'	'	'	'	'	'	'	'	33,511	35,791	37,835
Common stock equivalents	'	'	'	'	'	'	'	'	132	'	996
Weighted average shares outstanding - diluted	'	'	'	'	'	'	'	'	33,643	35,791	38,831
Earnings (loss) per share - basic:	'	'	'	'	'	'	'	'	'	'	'
From continuing operations	'	'	'	'	'	'	'	'	$0.32	($1)	$0.50
From discontinued operations	'	'	'	'	'	'	'	'	'	$0.62	$0.22
Earnings (loss) per share - basic	($0.25)	$0.27	$0.21	$0.09	$0.17	$0.26	($0.90)	$0.12	$0.32	($0.38)	$0.72
Earnings (loss) per share - diluted:	'	'	'	'	'	'	'	'	'	'	'
From continuing operations	'	'	'	'	'	'	'	'	$0.32	($1)	$0.49
From discontinued operations	'	'	'	'	'	'	'	'	'	$0.62	$0.21
Earnings (loss) per share - diluted	($0.25)	$0.27	$0.21	$0.09	$0.17	$0.26	($0.90)	$0.12	$0.32	($0.38)	$0.70

Summary_of_Significant_Account5

Summary of Significant Accounting Policies - Summary of Cash Dividend Declared (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounting Policies [Abstract]	'	'	'
Cash dividends declared per share	$0.10	$1	'

Discontinued_Operations_Additi

Discontinued Operations - Additional Information (Detail) (USD $)	12 Months Ended			3 Months Ended	0 Months Ended				0 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2012	Mar. 31, 2012	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2012	Mar. 31, 2012	Mar. 31, 2012
				Kforce Clinical Research, Inc [Member]	Stock Purchase Agreement [Member]	Stock Purchase Agreement [Member]	Stock Purchase Agreement [Member]	Transition Services Agreement [Member]	Kforce Clinical Research, Inc.[Member]	Kforce Clinical Research, Inc.[Member]
					inVentiv Health, Inc. [Member]	inVentiv Health, Inc. [Member]	inVentiv Health, Inc. [Member]	inVentiv Health, Inc. [Member]	Stock Purchase Agreement [Member]	Transition Services Agreement [Member]
					Private Placement [Member]	Private Placement [Member]	Private Placement [Member]		inVentiv Health, Inc. [Member]	inVentiv Health, Inc. [Member]
						Maximum [Member]	Minimum [Member]		Private Placement [Member]	Private Placement [Member]
										Maximum [Member]
Schedule of Discontinued Operations [Line Items]	'	'	'	'	'	'	'	'	'	'
Stock purchase agreement date	'	'	'	'	'	'	'	'	17-Mar-12	'
Effective date of stock acquisition	'	'	'	'	'	'	'	'	31-Mar-12	'
Proceeds from sale of operation	'	'	'	'	'	'	'	'	$57,335	'
Post closing working capital adjustment	'	'	'	'	'	'	'	'	7,335	'
Post-closing transitional services period	'	'	'	'	'	'	'	'	'	'18 months
Indemnification obligations	'	'	'	'	'	5,000	375	'	'	'
Indemnification obligations period	'	'	'	'	'18 months	'	'	'	'	'
Payable due to purchaser, net of receivables from purchaser	'	'	'	'	'	'	'	2,658	'	'
Recognized compensation expense	'	'	'	31,297	'	'	'	'	'	'
Payroll taxes	$1,018	$10,241	$4,696	$784	'	'	'	'	'	'

Discontinued_Operations_Summar

Discontinued Operations - Summary of Results from Discontinued Operations (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2012	Dec. 31, 2011
Schedule of Discontinued Operations [Line Items]	'	'	'	'	'	'	'	'	'	'
Gain on sale of discontinued operations	'	'	'	'	'	'	'	'	$36,418	'
Income from discontinued operations, net of income taxes	'	'	'	'	198	-7	15	21,803	22,009	8,100
Kforce Clinical Research, Inc [Member]	'	'	'	'	'	'	'	'	'	'
Schedule of Discontinued Operations [Line Items]	'	'	'	'	'	'	'	'	'	'
Net service revenues	'	'	'	'	'	'	'	'	29,808	106,172
Direct costs of services and operating expenses	'	'	'	'	'	'	'	'	26,491	92,775
(Loss) income from discontinued operations, before gain on sale of discontinued operations and income taxes	'	'	'	'	'	'	'	'	3,317	13,397
Gain on sale of discontinued operations	'	'	'	'	'	'	'	'	36,418	'
Income from discontinued operations, before income taxes	'	'	'	'	'	'	'	'	39,735	13,397
Income tax expense	'	'	'	'	'	'	'	'	17,726	5,297
Income from discontinued operations, net of income taxes	'	'	'	'	'	'	'	'	$22,009	$8,100

Fixed_Assets_Major_Classificat

Fixed Assets - Major Classifications of Fixed Assets and Related Useful Lives (Detail) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

In Thousands, unless otherwise specified

Land [Member]

Land [Member]

Building and Improvements [Member]

Building and Improvements [Member]

Building and Improvements [Member]

Building and Improvements [Member]

Furniture and Equipment [Member]

Furniture and Equipment [Member]

Furniture and Equipment [Member]

Furniture and Equipment [Member]

Computer Equipment [Member]

Computer Equipment [Member]

Computer Equipment [Member]

Computer Equipment [Member]

Leasehold Improvements [Member]

Leasehold Improvements [Member]

Leasehold Improvements [Member]

Leasehold Improvements [Member]

Capital Leases [Member]

Capital Leases [Member]

Capital Leases [Member]

Capital Leases [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Property, Plant and Equipment [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fixed assets, Useful Life

'

'

'

'

'

'

'5 years

'40 years

'

'

'5 years

'7 years

'

'

'3 years

'5 years

'

'

'3 years

'5 years

'

'

'3 years

'5 years

Fixed assets, gross

$60,950

$57,136

$5,892

$5,892

$25,191

$25,121

'

'

$9,701

$8,232

'

'

$8,966

$7,269

'

'

$6,894

$4,720

'

'

$4,306

$5,902

'

'

Less accumulated depreciation and amortization

-24,222

-22,253

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fixed assets, net

$36,728

$34,883

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fixed_Assets_Additional_inform

Fixed Assets - Additional information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property Plant And Equipment Useful Life And Values [Abstract]	'	'	'
Depreciation and amortization	$5,863	$5,368	$5,826

Income_Taxes_Income_Tax_Expens

Income Taxes - Income Tax Expense (Benefit), Continuing Operations (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Federal	$7,119	($1,238)	$8,784
State	1,026	-1,097	1,244
Deferred	1,166	-17,519	830
Total income tax expense (benefit), continuing operations	$9,311	($19,854)	$10,858

Income_Taxes_Effective_Income_

Income Taxes - Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Federal income tax rate	35.00%	35.00%	35.00%
State income taxes, net of Federal tax effect	4.20%	4.70%	3.30%
Non-deductible goodwill impairment	2.40%	-4.10%	'
Non-deductible meals and entertainment	2.90%	-0.70%	1.00%
Other	1.80%	0.80%	-3.00%
Effective tax rate	46.30%	35.70%	36.30%

Income_Taxes_Components_of_Def

Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Assets:	'	'
Accounts receivable reserves	$779	$859
Accrued liabilities	2,902	3,795
Deferred compensation obligation	1,111	917
Pension and postretirement benefit plans	19	4,191
Other	75	71
Deferred tax assets, current	4,886	9,833
Liabilities:	'	'
Prepaid expenses	-224	-339
Deferred tax asset, net - current	4,662	9,494
Assets:	'	'
Accrued liabilities	579	258
Deferred compensation obligation	6,896	6,622
Stock-based compensation	773	356
Pension and postretirement benefit plans	4,916	5,563
Goodwill and intangible assets	11,750	10,142
Deferred revenue	106	54
Other	1,531	2,140
Deferred tax assets, non-current	26,551	25,135
Liabilities:	'	'
Fixed assets	-2,693	-2,659
Other	-503	-868
Deferred tax liabilities, non-current	-3,196	-3,527
Valuation allowance	-85	-85
Deferred tax asset, net - non-current	23,270	21,523
Net deferred tax asset	$27,932	$31,017

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Operating Loss Carryforwards [Line Items]	'	'
Likelihood of an uncertain income tax position not being recognized	50.00%	'
Income tax Adjustments Settlements for 2009 after examination	$0	$1,624
State [Member]	'	'
Operating Loss Carryforwards [Line Items]	'	'
State tax net operating losses	$20,907	'
State tax expiration date	'State tax NOLs expire in varying amounts through 2032	'

Income_Taxes_Income_Tax_Uncert

Income Taxes - Income Tax Uncertainties (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Beginning balance	$133	$72	$191
Additions for tax positions of prior years	269	36	10
Additions for tax positions of current year	25	25	38
Reductions for tax positions of prior years - lapse of applicable statutes	-24	'	-82
Settlements	'	'	-85
Ending balance	$403	$133	$72

Other_Assets_Other_Assets_Deta

Other Assets - Other Assets (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Other Assets Non Current [Line Items]	'	'
Capitalized software, net of amortization	$5,472	$6,729
Deferred loan costs, net of amortization	288	345
Other non-current assets	321	163
Total other assets	30,991	28,038
Rabbi Trust [Member]	'	'
Other Assets Non Current [Line Items]	'	'
Assets held in Rabbi Trust	$24,910	$20,801

Other_Assets_Additional_Inform

Other Assets - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Assets [Line Items]	'	'	'
Capitalized software purchases and direct costs associated with software developed for internal use	$2,244	$2,429	'
Accumulated amortization of capitalized software	34,816	31,861	'
Amortization expense of capitalized software	3,236	4,587	5,716
Rabbi Trust [Member]	'	'	'
Other Assets [Line Items]	'	'	'
Assets held in Rabbi Trust	24,910	20,801	'
Rabbi Trust [Member] | Cash Surrender Value of Life Insurance Policies [Member]	'	'	'
Other Assets [Line Items]	'	'	'
Assets held in Rabbi Trust	24,041	16,677	'
Rabbi Trust [Member] | Money Market Funds [Member]	'	'	'
Other Assets [Line Items]	'	'	'
Assets held in Rabbi Trust	869	'	'
Rabbi Trust [Member] | Bond Mutual Funds [Member]	'	'	'
Other Assets [Line Items]	'	'	'
Assets held in Rabbi Trust	'	$4,124	'

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets - Changes in the Carrying Amount of Goodwill in Total and for Each Reporting Unit (Detail) (USD $)	3 Months Ended			12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill [Line Items]	'	'	'	'	'	'
Carrying value, beginning balance	'	'	'	$63,410	$138,078	'
Disposition of KCR	'	'	'	'	-5,510	'
Impairment of goodwill	'	'	'	-14,510	-69,158	'
Carrying value, ending balance	48,900	63,410	'	48,900	63,410	'
Technology [Member]	'	'	'	'	'	'
Goodwill [Line Items]	'	'	'	'	'	'
Carrying value, ending balance	17,034	17,034	'	17,034	17,034	17,034
Finance and Accounting [Member]	'	'	'	'	'	'
Goodwill [Line Items]	'	'	'	'	'	'
Carrying value, ending balance	8,006	8,006	'	8,006	8,006	8,006
Clinical Research [Member]	'	'	'	'	'	'
Goodwill [Line Items]	'	'	'	'	'	'
Carrying value, beginning balance	'	'	'	'	5,474	'
Adjustment	'	'	'	'	36	'
Disposition of KCR	'	'	'	'	-5,510	'
Health Information Management [Member]	'	'	'	'	'	'
Goodwill [Line Items]	'	'	'	'	'	'
Carrying value, beginning balance	'	'	'	'	4,923	'
Adjustment	'	'	'	'	-36	'
Carrying value, ending balance	4,887	4,887	'	4,887	4,887	'
Government Solutions [Member]	'	'	'	'	'	'
Goodwill [Line Items]	'	'	'	'	'	'
Carrying value, beginning balance	'	'	'	33,483	102,641	'
Impairment of goodwill	-14,510	-3,858	-65,300	-14,510	-69,158	0
Carrying value, ending balance	$18,973	$33,483	'	$18,973	$33,483	$102,641

Goodwill_and_Other_Intangible_3

Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended			12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill And Other Intangible Assets [Line Items]	'	'	'	'	'	'
Discrete forecast period	'	'	'	'5 years	'	'
Goodwill impairment	'	'	'	$14,510	$69,158	'
Amortization of intangible assets	'	'	'	747	907	1,152
Estimated remaining amortization expense, 2014	634	'	'	634	'	'
Estimated remaining amortization expense, 2015	634	'	'	634	'	'
Estimated remaining amortization expense, 2016	457	'	'	457	'	'
Estimated remaining amortization expense, 2017	209	'	'	209	'	'
Estimated remaining amortization expense, 2018	209	'	'	209	'	'
Indefinite lived intangible assets, impairment expense	'	'	'	0	0	0
Government Solutions [Member]	'	'	'	'	'	'
Goodwill And Other Intangible Assets [Line Items]	'	'	'	'	'	'
Range of terminal value growth rates	'	'	'	3.00%	'	'
Reporting unit, fair value as percentage of carrying amount	73.00%	'	'	73.00%	'	'
Goodwill impairment	14,510	3,858	65,300	14,510	69,158	0
Goodwill related tax benefit	'	$1,405	'	$5,160	$24,670	'
Government Solutions [Member] | Income Approach Valuation Technique [Member]	'	'	'	'	'	'
Goodwill And Other Intangible Assets [Line Items]	'	'	'	'	'	'
Weighted average cost of capital	'	'	'	17.00%	'	'
Weighted average cost of capital risk premium	'	'	'	2.00%	'	'
Government Solutions [Member] | Guideline Transaction Method [Member] | Minimum [Member]	'	'	'	'	'	'
Goodwill And Other Intangible Assets [Line Items]	'	'	'	'	'	'
Enterprise value/revenue multiples used to determine fair value of goodwill	'	'	'	0.6	'	'
Enterprise value/EBITDA multiples used to determine fair value of goodwill	'	'	'	5.8	'	'
Government Solutions [Member] | Guideline Transaction Method [Member] | Maximum [Member]	'	'	'	'	'	'
Goodwill And Other Intangible Assets [Line Items]	'	'	'	'	'	'
Enterprise value/revenue multiples used to determine fair value of goodwill	'	'	'	2	'	'
Enterprise value/EBITDA multiples used to determine fair value of goodwill	'	'	'	18.7	'	'
Government Solutions [Member] | Guideline Transaction Method [Member] | Goodwill [Member]	'	'	'	'	'	'
Goodwill And Other Intangible Assets [Line Items]	'	'	'	'	'	'
Value of control premium used to determine fair value of goodwill	'	'	'	40.00%	'	'
Government Solutions [Member] | Guideline Company Method [Member] | Minimum [Member]	'	'	'	'	'	'
Goodwill And Other Intangible Assets [Line Items]	'	'	'	'	'	'
Enterprise value/revenue multiples used to determine fair value of goodwill	'	'	'	0.4	'	'
Enterprise value/EBITDA multiples used to determine fair value of goodwill	'	'	'	4.4	'	'
Government Solutions [Member] | Guideline Company Method [Member] | Maximum [Member]	'	'	'	'	'	'
Goodwill And Other Intangible Assets [Line Items]	'	'	'	'	'	'
Enterprise value/revenue multiples used to determine fair value of goodwill	'	'	'	0.5	'	'
Enterprise value/EBITDA multiples used to determine fair value of goodwill	'	'	'	6.9	'	'
Health Information Management [Member]	'	'	'	'	'	'
Goodwill And Other Intangible Assets [Line Items]	'	'	'	'	'	'
Range of terminal value growth rates	'	'	'	3.00%	'	'
Reporting unit, percentage of fair value in excess of carrying amount	156.00%	'	'	156.00%	'	'
Health Information Management [Member] | Income Approach Valuation Technique [Member]	'	'	'	'	'	'
Goodwill And Other Intangible Assets [Line Items]	'	'	'	'	'	'
Weighted average cost of capital	'	'	'	17.50%	'	'
Weighted average cost of capital risk premium	'	'	'	2.00%	'	'
Health Information Management [Member] | Guideline Transaction Method [Member] | Minimum [Member]	'	'	'	'	'	'
Goodwill And Other Intangible Assets [Line Items]	'	'	'	'	'	'
Enterprise value/revenue multiples used to determine fair value of goodwill	'	'	'	0.2	'	'
Enterprise value/EBITDA multiples used to determine fair value of goodwill	'	'	'	4.7	'	'
Health Information Management [Member] | Guideline Transaction Method [Member] | Maximum [Member]	'	'	'	'	'	'
Goodwill And Other Intangible Assets [Line Items]	'	'	'	'	'	'
Enterprise value/revenue multiples used to determine fair value of goodwill	'	'	'	0.8	'	'
Enterprise value/EBITDA multiples used to determine fair value of goodwill	'	'	'	19.7	'	'
Health Information Management [Member] | Guideline Transaction Method [Member] | Goodwill [Member]	'	'	'	'	'	'
Goodwill And Other Intangible Assets [Line Items]	'	'	'	'	'	'
Value of control premium used to determine fair value of goodwill	'	'	'	10.00%	'	'
Health Information Management [Member] | Guideline Company Method [Member] | Minimum [Member]	'	'	'	'	'	'
Goodwill And Other Intangible Assets [Line Items]	'	'	'	'	'	'
Enterprise value/revenue multiples used to determine fair value of goodwill	'	'	'	0.3	'	'
Enterprise value/EBITDA multiples used to determine fair value of goodwill	'	'	'	5.4	'	'
Health Information Management [Member] | Guideline Company Method [Member] | Maximum [Member]	'	'	'	'	'	'
Goodwill And Other Intangible Assets [Line Items]	'	'	'	'	'	'
Enterprise value/revenue multiples used to determine fair value of goodwill	'	'	'	0.6	'	'
Enterprise value/EBITDA multiples used to determine fair value of goodwill	'	'	'	13.5	'	'

Goodwill_and_Other_Intangible_4

Goodwill and Other Intangible Assets - Summary of the Gross Amount and Accumulated Impairment Losses of Goodwill (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Goodwill [Line Items]	'	'	'
Carrying value	$48,900	$63,410	$138,078
Technology [Member]	'	'	'
Goodwill [Line Items]	'	'	'
Gross amount	156,391	156,391	156,391
Accumulated impairment losses	-139,357	-139,357	-139,357
Carrying value	17,034	17,034	17,034
Finance and Accounting [Member]	'	'	'
Goodwill [Line Items]	'	'	'
Gross amount	19,766	19,766	19,766
Accumulated impairment losses	-11,760	-11,760	-11,760
Carrying value	8,006	8,006	8,006
Government Solutions [Member]	'	'	'
Goodwill [Line Items]	'	'	'
Gross amount	102,641	102,641	102,641
Accumulated impairment losses	-83,668	-69,158	'
Carrying value	$18,973	$33,483	$102,641

Goodwill_and_Other_Intangible_5

Goodwill and Other Intangible Assets - Summary of the Gross and Net Carrying Values of Intangible Assets (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Indefinite-lived intangible assets	'	'
Carrying value	$4,993	$5,736
Customer Relationships, Customer Contracts, and Other [Member]	'	'
Definite-lived intangible assets	'	'
Gross amount	27,940	27,936
Accumulated amortization	-25,187	-24,440
Carrying value	2,753	3,496
Trade Names And Trademarks [Member]	'	'
Indefinite-lived intangible assets	'	'
Gross amount	2,240	2,240
Accumulated impairment losses	'	'
Carrying value	$2,240	$2,240

Accounts_Payable_and_Other_Acc2

Accounts Payable and Other Accrued Liabilities - Schedule of Accounts Payable and Accrued Liabilities (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Payables And Accruals [Abstract]	'	'
Accounts payable	$19,445	$22,653
Accrued liabilities	12,376	13,552
Total	$31,821	$36,205

Accounts_Payable_and_Other_Acc3

Accounts Payable and Other Accrued Liabilities - Additional Information (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Payables And Accruals [Abstract]	'	'
Amount owed to procurement card provider	$695	$875

Accrued_Payroll_Costs_Componen

Accrued Payroll Costs - Components of Accrued Payroll Costs (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accrued Payroll Costs [Abstract]	'	'
Payroll and benefits	$43,059	$36,172
Payroll taxes	9,111	9,246
Health insurance liabilities	2,993	3,114
Workers' compensation liabilities	1,709	1,531
Total	$56,872	$50,063

Other_Current_Liabilities_Comp

Other Current Liabilities - Components of Other Current Liabilities (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'
Other	$1,141	$882
Total	1,141	11,564
Supplemental Executive Retirement Plan [Member]	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'
Supplemental executive retirement plan (Note 12)	$0	$10,682

Credit_Facility_Additional_Inf

Credit Facility - Additional Information (Detail) (USD $)	12 Months Ended				12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 27, 2013	Dec. 31, 2013
			Revolving Credit Facility [Member]	Revolving Credit Facility [Member]	Letter of Credit [Member]
				Scenario, Previously Reported [Member]
Line of Credit Facility [Line Items]	'	'	'	'	'
Date of credit agreement	20-Sep-11	'	'	'	'
Date of credit amended	27-Dec-13	'	'	'	'
Borrowing capacity under credit facility	'	'	$135,000,000	$100,000,000	'
Remaining credit facility under accordion option	'	'	15,000,000	'	'
Sub-limit under credit facility for letters of credit	'	'	'	'	15,000,000
Description of borrowing availability under credit facility	'Borrowing availability under the Credit Facility is limited to the remainder of (a) the lesser of (i) $135 million minus the four week average aggregate weekly payroll of employees assigned to work for customers, or (ii) 85% of the net amount of eligible accounts receivable, plus 80% of the net amount of eligible unbilled accounts receivable, plus 80% of the net amount of eligible employee placement accounts, minus certain minimum availability reserves	'	'	'	'
Percentage of accounts receivable	85.00%	'	'	'	'
Percentage of unbilled accounts receivable	80.00%	'	'	'	'
Percentage of employee placement accounts	80.00%	'	'	'	'
Interest rate terms	'Outstanding amount under the Credit Facility. Outstanding borrowings under the Revolving Loan Amount bear interest at a rate of (a) LIBOR plus an applicable margin based on various factors or (b) the higher of (i) the prime rate, (ii) the federal funds rate plus 0.50% or (iii) LIBOR plus 1.25%.	'	'	'	'
Percentage of interest rate under revolving loan amount, Condition 1	1.25%	'	'	'	'
Percentage of interest rate under revolving loan amount, Condition 2	0.50%	'	'	'	'
Percentage of interest rate under revolving loan amount, Condition 3	0.13%	'	'	'	'
Fixed charge coverage ratio required	1	'	'	'	'
Percentage of aggregate amount of the commitment	10.00%	'	'	'	'
Minimum availability under credit facility to avoid negative covenants	11,000,000	'	'	'	'
Borrowing capacity under credit facility	43,200,000	'	'	'	'
Credit facility expiration date	20-Sep-16	'	'	'	'
Outstanding under the Credit Facility	$64,642,000	$21,000,000	'	'	'

Other_LongTerm_Liabilities_Com

Other Long-Term Liabilities - Components of Other- Long Term Liabilities (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Other Long Term Liabilities [Line Items]	'	'
Deferred compensation plan (Note 12)	$22,247	$19,115
Other	3,830	2,640
Total	36,556	34,285
Supplemental Executive Retirement Plan [Member]	'	'
Other Long Term Liabilities [Line Items]	'	'
Supplemental executive retirement plan (Note 12)	7,852	8,976
Supplemental Executive Retirement Health Plan [Member]	'	'
Other Long Term Liabilities [Line Items]	'	'
Supplemental executive retirement plan (Note 12)	$2,627	$3,554

Employee_Benefit_Plans_Additio

Employee Benefit Plans - Additional Information (Detail) (USD $)

12 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

In Thousands, except Per Share data, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Apr. 30, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Jan. 03, 2012

Jan. 03, 2012

Jan. 03, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Alternative Long-Term Incentive [Member]

Alternative Long-Term Incentive [Member]

Alternative Long-Term Incentive [Member]

Tranche One [Member]

Tranche Two [Member]

Tranche Three [Member]

Rabbi Trust [Member]

Rabbi Trust [Member]

Non-Qualified Deferred Compensation Plan [Member]

Non-Qualified Deferred Compensation Plan [Member]

Non-Qualified Deferred Compensation Plan [Member]

Foreign Pension Plan [Member]

Foreign Pension Plan [Member]

Foreign Pension Plan [Member]

Foreign Pension Plan [Member]

Foreign Pension Plan [Member]

Supplemental Executive Retirement Plan [Member]

Supplemental Executive Retirement Plan [Member]

Supplemental Executive Retirement Plan [Member]

Supplemental Executive Retirement Plan [Member]

Supplemental Executive Retirement Health Plan [Member]

Supplemental Executive Retirement Health Plan [Member]

Supplemental Executive Retirement Health Plan [Member]

Supplemental Executive Retirement Health Plan [Member]

Alternative Long-Term Incentive [Member]

Alternative Long-Term Incentive [Member]

Alternative Long-Term Incentive [Member]

Age

Minimum [Member]

Maximum [Member]

Participant

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Alternative measurement periods

'

'

'

'

'

'

'

'12 months

'24 months

'36 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Alternative long term incentive expense

'

'

'

'

$0

$9,805

$0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Alternative Long Term Incentive Payment

'

'

'

9,805

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accrued matching contribution

973

1,139

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

KFORCE common stock held by both plan

317

363

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of discount on shares purchased under employee stock purchase plan

5.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Employee stock purchase plan, shares

41

51

56

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Average purchase price

$14.88

$12.55

$12.64

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred compensation plan, amount included in accounts payable and other accrued liabilities

'

'

'

'

'

'

'

'

'

'

'

'

3,149

1,699

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred compensation plan, amount included in other long term liability

'

'

'

'

'

'

'

'

'

'

'

'

22,247

19,115

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Compensation expenses

'

'

'

'

'

'

'

'

'

'

'

'

578

648

1,358

'

'

'

'

'

'

'

'

'

'

'

'

'

Assets held in Rabbi Trust

'

'

'

'

'

'

'

'

'

'

24,910

20,801

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gains (losses) attributable to the investments in bond mutual funds

-15

519

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Age of employee covered under plan

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

60

'

'

'

'

'

'

'

'

'

'

'

'

Completed at least credited service period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

Benefits payable calculation under plan description

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'One-half month's salary for each year of credited service

'

'

'

'

'

'

'

'

'

'

'

'

Benefits payable under the plan equate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'1 month 15 days

'

'

'

'

'

'

'

'

'

'

'

'

Discount rate used to determine the actuarial present value of the projected benefit obligation and pension expense

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.00%

6.00%

7.40%

'

'

3.75%

3.75%

2.50%

'

5.00%

5.00%

3.75%

'

Estimated rate of future annual compensation increases

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.00%

3.00%

5.00%

'

'

'

'

'

'

'

'

'

'

Age group of employees for company turnover rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'20 years

'64 years

'

'

'

'

'

'

'

'

Net periodic benefit cost

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

92

128

189

'

'

'

2,610

2,811

3,806

'

510

1,341

377

Foreign defined benefit plan obligation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,434

1,187

'

'

'

7,852

7,852

19,658

17,230

2,674

2,674

3,574

3,764

Normal retirement age under the SERP

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'65 years

'

'

'

'

'

'

Certain conditions allow for early retirement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'55 years

'

'

'

'

'

'

Vesting percentage under plan between age 55 to 10 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

Vesting percentage under plan prior to age between 55 to 10 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.00%

'

'

'

'

'

'

Define benefit plan employees minimum requisition period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'10 years

'

'

'

'

'

'

Define benefit plan employees minimum requisition period under specific conditions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

Share based payment benefits payable targeted percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

45.00%

'

'

'

'

'

'

Period in which the executive officer earned the highest salary and bonus

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'3 years

'

'

'

'

'

'

Period of employment of officer

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'10 years

'

'

'

'

'

'

Eligible age under condition one for reduced benefits under the plan

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'62 years

'

'

'

'

'

'

Employee service period under condition one

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'10 years

'

'

'

'

'

'

Normal retirement age

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'55 years

'

'

'

'

'

'

Service period reduction up to the retirement age

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'25 years

'

'

'

'

'

'

Lump sum payment period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'10 years

'

'

'

'

'

'

Curtailment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,138

2,138

'

'

785

785

'

'

Number of participant

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

Present value of the accumulated benefit obligation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

10,682

'

47

47

20

'

Defined benefit plan accumulated benefit obligation non-current

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7,852

7,852

8,976

'

2,627

2,627

3,554

'

Lump-sum payment to the participant

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10,682

'

'

'

'

'

'

'

Payments made under the SERP, SERHP

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10,682

0

'

'

64

'

'

Contributions made to the SERP & SERHP

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

'

Curtailment gain

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$359

$359

'

'

Employee_Benefit_Plan_Actuaria

Employee Benefit Plan - Actuarial Assumptions Used to Determine the Actuarial Present Value of Projected Benefit Obligations (Detail) (Supplemental Executive Retirement Plan [Member])	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Executive Retirement Plan [Member]	'	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'	'
Discount rate	3.75%	2.50%	'
Expected long-term rate of return on plan assets	'	'	'
Rate of future compensation increase	4.00%	3.75%	'

Employee_Benefit_Plans_Weighte

Employee Benefit Plans - Weighted Average Actuarial Assumptions Used To Determine Net Periodic Benefit Cost (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Executive Retirement Health Plan [Member]	'	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'	'
Discount rate	3.75%	4.00%	5.25%
Expected long-term rate of return on plan assets	'	'	'
Supplemental Executive Retirement Plan [Member]	'	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'	'
Discount rate	2.50%	3.25%	4.00%
Expected long-term rate of return on plan assets	'	'	'
Rate of future compensation increase	4.00%	4.00%	4.00%

Employee_Benefit_Plans_Compone

Employee Benefit Plans - Components of Net Periodic Benefit Cost (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Executive Retirement Plan [Member]	'	'	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'	'	'
Service cost	'	$2,018	$2,087	$3,248
Interest cost	'	471	560	482
Amortization of actuarial loss	'	97	164	76
Settlement loss	'	24	'	'
Net periodic benefit (gain) cost	'	2,610	2,811	3,806
Supplemental Executive Retirement Health Plan [Member]	'	'	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'	'	'
Service cost	'	649	919	324
Interest cost	'	134	150	47
Amortization of actuarial loss	'	86	272	6
Curtailment gain	-359	-359	'	'
Net periodic benefit (gain) cost	'	$510	$1,341	$377

Employee_Benefit_Plans_Changes

Employee Benefit Plans - Changes in the Benefit Obligation (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Executive Retirement Plan [Member]	'	'	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'	'	'
Accumulated postretirement benefit obligation, beginning	'	$19,658	$17,230	'
Service cost	'	2,018	2,087	3,248
Interest cost	'	471	560	482
Actuarial experience and changes in actuarial assumptions	'	-1,475	-219	'
Curtailment	-2,138	-2,138	'	'
Benefits Paid	'	-10,682	0	'
Accumulated postretirement benefit obligation, ending	7,852	7,852	19,658	17,230
Supplemental Executive Retirement Health Plan [Member]	'	'	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'	'	'
Accumulated postretirement benefit obligation, beginning	'	3,574	3,764	'
Service cost	'	649	919	324
Interest cost	'	134	150	47
Actuarial experience and changes in actuarial assumptions	'	-834	-1,259	'
Curtailment	-785	-785	'	'
Benefits Paid	'	-64	'	'
Accumulated postretirement benefit obligation, ending	$2,674	$2,674	$3,574	$3,764

Employee_Benefit_Plans_Project

Employee Benefit Plans - Projected Annual Benefit Payment (Detail) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Supplemental Executive Retirement Plan [Member]	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'
2014	'
2015	'
2016	'
2017	'
2018	'
2019-2023	7,494
Thereafter	3,044
Supplemental Executive Retirement Health Plan [Member]	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'
2014	48
2015	52
2016	57
2017	70
2018	76
2019-2023	743
Thereafter	$7,491

Employee_Benefit_Plans_Actuari

Employee Benefit Plans - Actuarial Assumptions Used to Determine the Actuarial Present Value of Projected Benefit Obligations (Detail) (Supplemental Executive Retirement Health Plan [Member])	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Executive Retirement Health Plan [Member]	'	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'	'
Discount rate	5.00%	3.75%	'
Expected long-term rate of return on plan assets	'	'	'

Employee_Benefit_Plans_Health_

Employee Benefit Plans - Health Care Cost Trend Rates (Detail) (Supplemental Executive Retirement Health Plan [Member])	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Supplemental Executive Retirement Health Plan [Member]	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'
Health care cost trend rate assumed for next year	7.50%	7.50%
Rate to which the cost trend rate is assumed to decline to (ultimate trend rate)	5.00%	5.00%
Year that the rate reaches the ultimate trend rate	'2018	'2017

Employee_Benefit_Plans_One_Per

Employee Benefit Plans - One Percent Change In Assumed Health Care Cost Trend Rates (Detail) (Supplemental Executive Retirement Health Plan [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
Supplemental Executive Retirement Health Plan [Member]	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'
Effect of total of service and interest cost	$73
Effect on postretirement benefit obligation	459
Effect of total of service and interest cost	-59
Effect on postretirement benefit obligation	($374)

Employee_Benefit_Plans_Pretax_

Employee Benefit Plans - Pretax Actuarial Loss (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
Pension [Member]	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'
Net pretax actuarial gain	$304
Postretirement [Member]	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'
Net pretax actuarial gain	$234

Employee_Benefit_Plans_Estimat

Employee Benefit Plans - Estimated Portion of the Net Actuarial Loss (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
Pension [Member]	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'
Recognized net actuarial loss (gain)	$11
Postretirement [Member]	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'
Recognized net actuarial loss (gain)	'

Fair_Value_Measurements_Additi

Fair Value Measurements - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Fair Value Disclosures [Abstract]	'	'
Transfers into or out of Level 1, 2 or 3 assets	$0	$0

Fair_Value_Measurements_Fair_V

Fair Value Measurements - Fair Value Measurements on a Recurring and Non-Recurring Basis (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Non-recurring basis:	'	'	'
Assets Measured at Fair Value	$48,900	$63,410	$138,078
Non-Recurring Basis [Member]	'	'	'
Non-recurring basis:	'	'	'
Assets Measured at Fair Value	48,900	63,410	'
Money Market Funds [Member] | Recurring Basis [Member]	'	'	'
Fair value measurements on a recurring and non-recurring basis	'	'	'
Fair value disclosure of assets	869	'	'
Credit Facility [Member] | Recurring Basis [Member]	'	'	'
Fair value measurements on a recurring and non-recurring basis	'	'	'
Credit Facility	-62,642	-21,000	'
Bond Mutual Funds [Member] | Recurring Basis [Member]	'	'	'
Fair value measurements on a recurring and non-recurring basis	'	'	'
Fair value disclosure of assets	'	4,124	'
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Non-Recurring Basis [Member]	'	'	'
Non-recurring basis:	'	'	'
Assets Measured at Fair Value	'	'	'
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Money Market Funds [Member] | Recurring Basis [Member]	'	'	'
Fair value measurements on a recurring and non-recurring basis	'	'	'
Fair value disclosure of assets	869	'	'
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Credit Facility [Member] | Recurring Basis [Member]	'	'	'
Fair value measurements on a recurring and non-recurring basis	'	'	'
Credit Facility	'	'	'
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Bond Mutual Funds [Member] | Recurring Basis [Member]	'	'	'
Fair value measurements on a recurring and non-recurring basis	'	'	'
Fair value disclosure of assets	'	4,124	'
Significant Other Observable Inputs (Level 2) [Member] | Non-Recurring Basis [Member]	'	'	'
Non-recurring basis:	'	'	'
Assets Measured at Fair Value	'	'	'
Significant Other Observable Inputs (Level 2) [Member] | Money Market Funds [Member] | Recurring Basis [Member]	'	'	'
Fair value measurements on a recurring and non-recurring basis	'	'	'
Fair value disclosure of assets	'	'	'
Significant Other Observable Inputs (Level 2) [Member] | Credit Facility [Member] | Recurring Basis [Member]	'	'	'
Fair value measurements on a recurring and non-recurring basis	'	'	'
Credit Facility	-62,642	-21,000	'
Significant Other Observable Inputs (Level 2) [Member] | Bond Mutual Funds [Member] | Recurring Basis [Member]	'	'	'
Fair value measurements on a recurring and non-recurring basis	'	'	'
Fair value disclosure of assets	'	'	'
Significant Unobservable Inputs (Level 3) [Member] | Non-Recurring Basis [Member]	'	'	'
Non-recurring basis:	'	'	'
Assets Measured at Fair Value	48,900	63,410	'
Significant Unobservable Inputs (Level 3) [Member] | Money Market Funds [Member] | Recurring Basis [Member]	'	'	'
Fair value measurements on a recurring and non-recurring basis	'	'	'
Fair value disclosure of assets	'	'	'
Significant Unobservable Inputs (Level 3) [Member] | Credit Facility [Member] | Recurring Basis [Member]	'	'	'
Fair value measurements on a recurring and non-recurring basis	'	'	'
Credit Facility	'	'	'
Significant Unobservable Inputs (Level 3) [Member] | Bond Mutual Funds [Member] | Recurring Basis [Member]	'	'	'
Fair value measurements on a recurring and non-recurring basis	'	'	'
Fair value disclosure of assets	'	'	'

Fair_Value_Measurements_Fair_V1

Fair Value Measurements - Fair Value Measurements on a Recurring and Non-Recurring Basis (Parenthetical) (Detail) (Government Solutions [Member], USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Government Solutions [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Goodwill fair value	$18,973	$38,483

Stock_Incentive_Plans_Addition

Stock Incentive Plans - Additional Information (Detail) (USD $)

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

In Thousands, except Share data, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Apr. 05, 2013

Dec. 31, 2013

Jun. 20, 2006

Dec. 31, 2013

Kforce Clinical Research, Inc [Member]

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Stock Appreciation Rights [Member]

Stock Appreciation Rights [Member]

Stock Appreciation Rights [Member]

Performance Accelerated Restricted Stock [Member]

Performance Accelerated Restricted Stock [Member]

Performance Accelerated Restricted Stock [Member]

Stock Options Outstanding [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

2013 Stock Incentive Plan [Member]

2013 Stock Incentive Plan [Member]

2006 Stock Incentive Plan [Member]

2006 Stock Incentive Plan [Member]

Incentive Stock Option Plan [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Authorized awards

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,000,000

'

7,850,000

'

Option expiration period from grant date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'10 years

'

'

'

'

'

'

'

'

'

'

'

Equity plan expiration date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5-Apr-23

'

28-Apr-16

'

'

Equity plan ceased year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'2005

Stock-based compensation expense including discontinued operations

'

$2,570

$26,243

$11,976

'

$0

$0

$0

$0

$0

$0

'

'

'

'

'

$2,570

$26,243

$11,976

'

'

'

'

'

'

'

Related tax benefit

'

1,018

10,241

4,696

784

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrecognized compensation cost

'

'

'

'

'

0

'

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Period within which incentive performance goals are specified

'

'

'

'

'

'

'

'

'90 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Incentive plan stock price pre-established percentage

'

'

'

'

'

'

'

'

30.00%

'

'

'

40.00%

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

Closing stock price grant by pre-established period

'

'

'

'

'

'

'

'

'10 days

'

'

'10 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares granted

'

'

'

689,000

'

'

'

'

0

0

'

'

'

'

'

'

904,000

288,000

1,604,000

'

'

'

'

'

'

'

Restricted stock granted, vesting period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'10 years

'

'

'

'2 years

'10 years

'

'

'

'

'

Restricted stock granted vesting Percentage Description

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'20% of the grant vesting annually in years six through ten

'

'

'

'

'

'

'

'

'

'

Accelerated unrecognized compensation expenses

1,078

'

'

'

22,158

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total unrecognized compensation expenses

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$7,525

$7,525

'

'

'

'

'

'

'

'

'

Weighted average period expected to be recognized

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'4 years 1 month 6 days

'

'

'

'

'

'

'

'

'

Stock_Incentive_Plans_Summary_

Stock Incentive Plans - Summary of Stock Option Activity (Detail) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Outstanding as of Beginning of year	247	324	685
Exercised	-67	-70	-349
Forfeited/Cancelled	'	-7	-12
Outstanding as of Ending of year	180	247	324
Outstanding, Weighted Average Exercise Price per Share, Beginning Balance	$10.87	$10.79	$9.47
Exercised, Weighted Average Exercise Price per Share	$8.98	$10.48	$8.20
Forfeited/Cancelled, Weighted Average Exercise Price per Share	'	$11	$10.75
Outstanding, Weighted Average Exercise Price per Share, Ending Balance	$11.57	$10.87	$10.79
Exercised, Total Intrinsic Value of Options Exercised	$573	$238	$2,931
Incentive Stock Option Plan [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Outstanding as of Beginning of year	154	226	587
Exercised	-57	-65	-349
Forfeited/Cancelled	'	-7	-12
Outstanding as of Ending of year	97	154	226
Stock Incentive Plan [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Outstanding as of Beginning of year	93	98	98
Exercised	-10	-5	'
Forfeited/Cancelled	'	'	'
Outstanding as of Ending of year	83	93	98

Stock_Incentive_Plans_Range_of

Stock Incentive Plans - Range of Outstanding and Exercisable Option Exercise Prices (Detail) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Number of Awards	181
Weighted Average Remaining Contractual Term	'2 years 2 months 1 day
Weighted Average Exercise Price	$11.57
Total Intrinsic Value	$1,605
Range One [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Lower range	$0
Upper range	$8.95
Number of Awards	'
Weighted Average Exercise Price	'
Total Intrinsic Value	'
Range Two [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Lower range	$8.96
Upper range	$14.45
Number of Awards	181
Weighted Average Remaining Contractual Term	'2 years 2 months 1 day
Weighted Average Exercise Price	$11.57
Total Intrinsic Value	$1,605

Stock_Incentive_Plans_Summary_1

Stock Incentive Plans - Summary of Stock Appreciation Rights Activity (Detail) (Stock Appreciation Rights [Member], USD $)	12 Months Ended
Share data in Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2011
Stock Appreciation Rights [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Outstanding as of Beginning of year	169
Exercised, Number of SARs	-169
Outstanding as of Ending of year	'
Outstanding, Weighted Average Exercise Price per SAR, Beginning Balance	$10.32
Exercised, Weighted Average Exercise Price per SAR	$10.32
Outstanding, Weighted Average Exercise Price per SAR, Ending Balance	'
Exercised, Total Intrinsic Value of SARs Exercised	$1,278

Stock_Incentive_Plans_Summary_2

Stock Incentive Plans - Summary of Restricted Stock Activity (Detail) (USD $)	1 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Feb. 29, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Granted	'	'	'	689,000
Forfeited	-393,000	'	'	'
Outstanding as of December 31, 2010	'	'	'	'
Granted, Total Intrinsic Value of RS Vested	'	'	'	'
Forfeited, Total Intrinsic Value of RS Vested	'	'	'	'
Restricted Stock [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Outstanding as of Beginning of year	'	38,000	3,334,000	1,898,000
Granted	'	904,000	288,000	1,604,000
Vested	'	-109,000	-3,191,000	-168,000
Forfeited	'	-22,000	-393,000	'
Outstanding as of Ending of year	'	811,000	38,000	3,334,000
Outstanding Beginning, Weighted Average Grant Date Fair Value	'	$12.11	$14.30	$12.34
Granted, Weighted Average Grant Date Fair Value	'	$16.72	$12.67	$16.31
Vested, Weighted Average Grant Date Fair Value	'	$14.15	$14.15	$11.41
Forfeited, Weighted Average Grant Date Fair Value	'	$15.43	$16.37	'
Outstanding Ending, Weighted Average Grant Date Fair Value	'	$16.89	$12.11	$14.30
Vested, Total Intrinsic Value of RS Vested	'	$2,092	$47,407	$2,592

Stock_Incentive_Plans_Summary_3

Stock Incentive Plans - Summary of Restricted Stock Activity (Parenthetical) (Detail)	1 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Feb. 29, 2012	Dec. 31, 2011
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'
Forfeiture of PARS	393	'
Number of shares granted	'	689

Organizational_Realignment_Add

Organizational Realignment - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restructuring and Related Activity [Line Items]	'	'	'
Severance and termination-related expenses	$7,097	'	'
Unrecorded stock compensation expenses	1,078	'	'
Discretionary bonus	3,606	'	'
Restructuring Charges	'	0	0
Restructuring reserve	1,416	'	'
Selling, General and Administrative Expenses [Member]	'	'	'
Restructuring and Related Activity [Line Items]	'	'	'
Severance and termination-related expenses	$7,097	'	'

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Commitments [Line Items]	'	'	'
Operating lease, rental expense	$5,265	$5,225	$6,027
Commitments to be paid in 2014	6,165	'	'
Commitments to be paid in 2015	3,762	'	'
Commitments to be paid in 2016	860	'	'
Commitments to be paid in 2017	0	'	'
Commitments to be paid in 2018	0	'	'
Purchase commitment, total	10,787	'	'
Letter of credit outstanding, for workers compensation	2,360	'	'
Letter of credit outstanding, for facility lease deposit	305	'	'
Litigation Period	'4 years	'	'
Provision for litigation loss	0	'	'
Tax audit cost	0	1,624	'
Severance payment under agreement description	'Certain of the agreements also provide for a severance payment of one to three times annual salary and one half to three times average annual bonus if such an agreement is terminated without good cause by the employer or for good reason by the employee.	'	'
Employees under contract terminated by employer without good cause or change in control	39,804	'	'
Employees under contract terminated by employer without good cause or in absence of change in control	$12,686	'	'
Minimum [Member]	'	'	'
Other Commitments [Line Items]	'	'	'
Tenure of expiration of lease	'30 days	'	'
Period for providing minimum compensation salary and continuation of certain benefits to executives under employment agreements	'6 months	'	'
Maximum [Member]	'	'	'
Other Commitments [Line Items]	'	'	'
Tenure of expiration of lease	'90 days	'	'
Period for providing minimum compensation salary and continuation of certain benefits to executives under employment agreements	'3 years	'	'

Commitments_and_Contingencies_2

Commitments and Contingencies - Summary of Future Minimum Lease Payments for Capital and Operating Lease (Detail) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule Of Operating And Capital Leased Assets [Line Items]	'
Present value of payments, 2014	$1,256
Present value of payments, 2015	1,000
Present value of payments, 2016	313
Present value of payments, 2017	51
Present value of payments, 2018	'
Present value of payments, Thereafter	'
Present value of payments, Total	2,620
Interest, 2014	2,283
Interest, 2015	2,212
Interest, 2016	959
Interest, 2017	8
Interest, 2018	'
Interest, Thereafter	'
Interest, Total	5,462
Capital lease payments, 2014	3,539
Capital lease payments, 2015	3,212
Capital lease payments, 2016	1,272
Capital lease payments, 2017	59
Capital lease payments, 2018	'
Capital lease payments, Thereafter	'
Capital Lease Payments, Total	8,082
Operating leases, 2014	5,410
Operating leases, 2015	3,653
Operating leases, 2016	2,350
Operating leases, 2017	748
Operating leases, 2018	424
Operating leases, Thereafter	19
Operating leases, Total	12,604
Total leases, 2014	8,949
Total leases, 2015	6,865
Total leases, 2016	3,622
Total leases, 2017	807
Total leases, 2018	424
Total leases, Thereafter	19
Total leases, Total	20,686
Furniture and Equipment [Member]	'
Schedule Of Operating And Capital Leased Assets [Line Items]	'
Operating leases, 2014	37
Operating leases, 2015	18
Operating leases, 2016	8
Operating leases, 2017	'
Operating leases, 2018	'
Operating leases, Thereafter	'
Operating leases, Total	63
Facilities [Member]	'
Schedule Of Operating And Capital Leased Assets [Line Items]	'
Operating leases, 2014	5,373
Operating leases, 2015	3,635
Operating leases, 2016	2,342
Operating leases, 2017	748
Operating leases, 2018	424
Operating leases, Thereafter	19
Operating leases, Total	$12,541

Reportable_Segments_Operations

Reportable Segments - Operations of Segments (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net service revenues	$302,919	$299,652	$283,689	$265,627	$269,839	$270,161	$274,129	$268,350	$1,151,887	$1,082,479	$1,004,747
Gross profit	96,117	97,312	92,847	83,336	88,580	88,762	89,766	80,825	369,612	347,933	317,747
Flexible Billings [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net service revenues	'	'	'	'	'	'	'	'	1,103,031	1,034,800	961,227
Search Fees [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net service revenues	'	'	'	'	'	'	'	'	48,856	47,679	43,520
Technology [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net service revenues	'	'	'	'	'	'	'	'	739,362	675,587	624,012
Gross profit	'	'	'	'	'	'	'	'	219,360	200,738	182,862
Technology [Member] | Flexible Billings [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net service revenues	'	'	'	'	'	'	'	'	720,179	655,062	606,238
Technology [Member] | Search Fees [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net service revenues	'	'	'	'	'	'	'	'	19,183	20,525	17,774
Finance and Accounting [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net service revenues	'	'	'	'	'	'	'	'	242,417	238,476	219,575
Gross profit	'	'	'	'	'	'	'	'	93,663	91,124	82,028
Finance and Accounting [Member] | Flexible Billings [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net service revenues	'	'	'	'	'	'	'	'	213,158	211,797	194,359
Finance and Accounting [Member] | Search Fees [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net service revenues	'	'	'	'	'	'	'	'	29,259	26,679	25,216
Health Information Management [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net service revenues	'	'	'	'	'	'	'	'	78,159	76,992	68,711
Gross profit	'	'	'	'	'	'	'	'	25,236	27,347	24,476
Health Information Management [Member] | Flexible Billings [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net service revenues	'	'	'	'	'	'	'	'	77,745	76,517	68,181
Health Information Management [Member] | Search Fees [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net service revenues	'	'	'	'	'	'	'	'	414	475	530
Government Solutions [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net service revenues	'	'	'	'	'	'	'	'	91,949	91,424	92,449
Gross profit	'	'	'	'	'	'	'	'	31,353	28,724	28,381
Government Solutions [Member] | Flexible Billings [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net service revenues	'	'	'	'	'	'	'	'	91,949	91,424	92,449
Government Solutions [Member] | Search Fees [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net service revenues	'	'	'	'	'	'	'	'	'	'	'

Quarterly_Financial_Data_Unaud2

Quarterly Financial Data (Unaudited) - Summary of Quarterly Financial Information (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly Financial Information Disclosure [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Net service revenues	$302,919	$299,652	$283,689	$265,627	$269,839	$270,161	$274,129	$268,350	$1,151,887	$1,082,479	$1,004,747
Gross profit	96,117	97,312	92,847	83,336	88,580	88,762	89,766	80,825	369,612	347,933	317,747
(Loss) income from continuing operations, net of income taxes	-8,234	8,979	6,948	3,094	5,922	9,275	-33,182	-17,727	10,787	-35,712	19,056
Income (loss) from discontinued operations, net of income taxes	'	'	'	'	198	-7	15	21,803	'	22,009	8,100
Net income (loss)	($8,234)	$8,979	$6,948	$3,094	$6,120	$9,268	($33,167)	$4,076	$10,787	($13,703)	$27,156
Earnings (loss) per share-basic	($0.25)	$0.27	$0.21	$0.09	$0.17	$0.26	($0.90)	$0.12	$0.32	($0.38)	$0.72
Earnings (loss) per share-diluted	($0.25)	$0.27	$0.21	$0.09	$0.17	$0.26	($0.90)	$0.12	$0.32	($0.38)	$0.70

Quarterly_Financial_Data_Unaud3

Quarterly Financial Data (Unaudited) - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended			3 Months Ended				12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
					Kforce Clinical Research, Inc [Member]	Government Solutions [Member]	Government Solutions [Member]	Government Solutions [Member]	Government Solutions [Member]	Government Solutions [Member]	Government Solutions [Member]
Schedule Of Quarterly Financial Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Severance and termination-related expenses	$7,097	'	'	'	'	'	'	'	'	'	'
Discretionary bonus	3,606	'	'	'	'	'	'	'	'	'	'
Goodwill impairment	'	14,510	69,158	'	'	14,510	3,858	65,300	14,510	69,158	0
Compensation expense recognized	'	'	'	'	31,297	'	'	'	'	'	'
Payroll taxes	'	$1,018	$10,241	$4,696	$784	'	'	'	'	'	'

Supplemental_Cash_Flow_Informa2

Supplemental Cash Flow Information - Details of Supplemental Cash Flow Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash paid during the period for:	'	'	'
Income taxes, net	$14,789	$14,456	$8,747
Interest, net	800	554	838
Non-Cash Transaction Information:	'	'	'
Tax benefit from disqualifying dispositions of stock options and restricted stock	15	36	145
Shares tendered in payment of exercise price of stock options and SARs	'	161	2,401
Common Stock transactions:	'	'	'
Employee stock purchase plan	613	647	705
Equipment acquired under capital leases	$1,929	$672	$1,166

Schedule_II_Valuation_and_Qual1

Schedule II - Valuation and Qualifying Accounts and Reserves Supplemental Schedule (Detail) (Accounts Receivable Reserves [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounts Receivable Reserves [Member]	'	'	'
Valuation and Qualifying Accounts Disclosure [Line Items]	'	'	'
Balance at Beginning of Period	$2,153	$2,457	$4,021
Charged to Costs and Expenses (Recovery)	382	1,249	-1,103
Charged to Other Accounts	-54	-70	166
Deductions	-453	-1,483	-627
Balance at End of Period	$2,028	$2,153	$2,457