Fair Value Measurements - Additional Information (Detail) (Product Development Earnout, USD $)	Dec. 28, 2012
Product Development Earnout
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Offsetting employee termination expenses and costs expected to be incurred to achieve product development earnout, estimated	$ 634,000

Offsetting employee termination expenses and costs expected to be incurred to achieve product development earnout, estimated value.

No definition available.

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