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Component: (Network and Table)
Network
2410406 - Disclosure - Employee Benefit Plans - Changes in the Benefit Obligation (Detail)
(http://www.kforce.com/role/EmployeeBenefitPlansChangesInBenefitObligationDetail)
TableDefined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000930420 (http://www.sec.gov/CIK)
Defined Benefit Plans and Other Postretirement Benefit Plans [Axis]Supplemental Executive Retirement Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
 
 
 
Projected benefit obligation, beginning
11,337,000  
10,197,000  
 
Service cost
1,310,000  
1,323,000  
1,164,000  
Interest cost
453,000  
383,000  
294,000  
Actuarial experience and changes in actuarial assumptions
336,000  
(566,000) 
 
Projected benefit obligation, ending
13,436,000  
 
11,337,000  
 
10,197,000