XML 45 R15.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Supplemental Balance Sheet Information | 9 Months Ended
--- | ---
Jan. 31, 2012
Supplemental Balance Sheet Information [Abstract] |
Supplemental Balance Sheet Information |
10. | Supplemental Balance Sheet Information
Other accrued liabilities included deferred revenue of $14.2 million and $11.3 million as of January 31, 2012 and April 30, 2011, respectively.

X
- Details
Name: | kfy_SupplementalBalanceSheetInformationAbstract
Namespace Prefix: | kfy_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References No definition available. + Details
Name: | us-gaap_SupplementalBalanceSheetDisclosuresTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration