v2.4.0.6

Geographic and Significant Customer Information - Additional Information (Detail)	3 Months Ended
	Dec. 28, 2012 Customer	Dec. 30, 2011
Geographic Information [Line Items]
Number of major customers	10
Total revenue of customer in percentage	62.00%	54.00%

X

- Details

Name:	mtsi_GeographicInformationLineItems
Namespace Prefix:	mtsi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of major customers.

+ References

No definition available.

+ Details

Name:	mtsi_NumberOfMajorCustomers
Namespace Prefix:	mtsi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues.

+ References

No definition available.

+ Details

Name:	us-gaap_EntityWideRevenueMajorCustomerPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration