Assets and Liabilities Subject to Fair Value Measurements on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 28, 2012	Sep. 28, 2012
Liabilities
Contingent consideration	$ 1,866	$ 1,876
Fair Value, Inputs, Level 3
Liabilities
Contingent consideration	1,866	1,876
Fair Value, Measurements, Recurring
Assets
Money market fund	20,046	20,040
Assets at fair value	20,046	20,040
Liabilities
Contingent consideration	1,866	1,876
Liabilities at fair value	1,866	1,876
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 1
Assets
Money market fund	20,046	20,040
Assets at fair value	20,046	20,040
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 3
Liabilities
Contingent consideration	1,866	1,876
Liabilities at fair value	$ 1,866	$ 1,876

Money market fund.

No definition available.

Name:	mspd_MoneyMarketFundFairValueDisclosure
Namespace Prefix:	mspd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

+ Details

Name:	us-gaap_AssetsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_AssetsFairValueDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Current portion of the fair value as of the acquisition date of potential payments under the contingent consideration arrangement, including cash and shares as applicable.

+ References

No definition available.

+ Details

Name:	us-gaap_BusinessAcquisitionContingentConsiderationAtFairValueCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This element represents the aggregate of the liabilities reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

+ Details

Name:	us-gaap_LiabilitiesFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_LiabilitiesFairValueDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration