Stock Based Compensation (Share-Based Payment Award Activity) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Stock Based Compensation [Abstract]
Aggregate fair value of shares vested	$ 0	$ 0.02

Share-based compensation arrangement by share-based payment award, options, vested in period, total fair value

No definition available.

Name:	synt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodTotalFairValue
Namespace Prefix:	synt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration