Defined Benefit Pension Plan and Postretirement Benefits (Details Textual)	3 Months Ended
Mar. 31, 2012
Defined benefit pension plan and postretirement benefits (textual) [Abstract]
Percentage of employer's contribution based on participants contribution	50.00%
Percentage of employer's contribution based on participants compensation	2.00%

Percentage of employers contribution based on participants compensation.

No definition available.

Name:	syke_PercentageOfEmployersContributionBasedOnParticipantsCompensation
Namespace Prefix:	syke_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration