Fair Value - Additional Information (Detail) $ in Millions	Dec. 31, 2015 USD ($)
Qelp [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Expected future value of contingent consideration	$ 9.1

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the expected future value (undiscounted) of the consideration which may be paid.

No definition available.

Name:	syke_BusinessCombinationContingentConsiderationExpectedFutureValue
Namespace Prefix:	syke_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant