Subsequent Event	9 Months Ended
Oct. 31, 2012
Subsequent Events [Abstract]
Subsequent events	12. Subsequent Event In November 2012, certain of our office leases, which expire in 2018 with aggregate commitments of $8.5 million, were assumed in the acquisition of real property by one of our co-CEOs.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

No definition available.

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