Condensed Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Jun. 30, 2014
Current assets:
Allowance for doubtful accounts	$ 6,138	$ 3,618
Stockholders’ equity:
Convertible preferred stock, par value (in dollars per share)	$ 0.001extr_ConvertiblePreferredStockParValue	$ 0.001extr_ConvertiblePreferredStockParValue
Convertible preferred stock, shares authorized	2,000,000	2,000,000
Convertible preferred stock, shares issued	0us-gaap_PreferredStockSharesIssued	0us-gaap_PreferredStockSharesIssued
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	750,000,000us-gaap_CommonStockSharesAuthorized	750,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	99,325,978us-gaap_CommonStockSharesIssued	96,980,214us-gaap_CommonStockSharesIssued
Common stock, shares outstanding	99,325,978us-gaap_CommonStockSharesOutstanding	96,980,214us-gaap_CommonStockSharesOutstanding

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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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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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