Shareholders' Equity - Capped Call Transaction (Details) $ / shares in Units, $ in Thousands	3 Months Ended
Jul. 02, 2016 USD ($) $ / shares
Equity [Abstract]
Capped calls, strike price (in dollars per share)	$ 50.40
Capped call, cap price (in dollars per share)	$ 58.80
Additional paid in capital, capped calls \| $	$ 7,935

Adjustments to Additional Paid in Capital, Purchase of Capped Call Transaction

No definition available.

Name:	mtsc_AdjustmentstoAdditionalPaidinCapitalPurchaseofCappedCallTransaction
Namespace Prefix:	mtsc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration