CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Apr. 30, 2015	Jan. 31, 2015
Allowance for accounts receivable	$ 3,945	$ 3,858
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	100,000,000us-gaap_PreferredStockSharesAuthorized	100,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued	0us-gaap_PreferredStockSharesIssued	0us-gaap_PreferredStockSharesIssued
Preferred stock, shares outstanding	0us-gaap_PreferredStockSharesOutstanding	0us-gaap_PreferredStockSharesOutstanding
Class A Common Stock
Common Stock, par value	$ 0.0001	$ 0.0001
Common Stock, shares authorized	1,000,000,000	1,000,000,000
Common Stock, shares issued	18,034,000	14,455,000
Common Stock, shares outstanding	18,034,000	14,455,000
Class B Common Stock
Common Stock, par value	$ 0.0001	$ 0.0001
Common Stock, shares authorized	200,000,000	200,000,000
Common Stock, shares issued	102,332,000	105,200,000
Common Stock, shares outstanding	102,332,000	105,200,000

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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