EARNINGS PER SHARE - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
Oct. 31, 2012	Oct. 31, 2011
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Common stock equivalent shares excluded from the denominator in the calculation of diluted earnings per share	$ 2.2	$ 2.4

Common Stock Equivalent Excluded in Calculation of Diluted Earnings Per Share

No definition available.

Name:	mlnk_CommonStockEquivalentExcludedInCalculationOfDilutedEarningsPerShare
Namespace Prefix:	mlnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration