Derivative Instruments and Hedging Activities (Net Gains (Losses) Recognized In Income For Derivative Contracts) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Sep. 28, 2013	Sep. 29, 2012	Oct. 01, 2011
Summary Of Significant Accounting Policies [Abstract]
Net loss recognized in Other (expense) income, net	$ (258)	$ (294)	$ (464)

The amount of net gains or losses on a cash flow hedge reclassified in the period to other (expense) income from accumulated other comprehensive income.

No definition available.

Name:	mtsc_CashFlowHedgeGainLossReclassifiedNetLossGainRecognizedInOtherExpenseIncomeNet
Namespace Prefix:	mtsc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration