Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018
Condensed Consolidated Balance Sheets [Abstract]
Accounts receivable, net allowance for doubtful accounts	$ 21,928	$ 19,258
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.004	$ 0.004
Common stock, shares authorized	350,000,000	350,000,000
Common stock, shares issued	184,330,350	184,315,866
Common stock, shares outstanding	142,494,116	142,679,632
Treasury stock, shares held	41,836,234	41,636,234

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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