Consolidated Balance Sheets (Parenthetical) $ in Thousands	Jun. 30, 2018 USD ($) shares	Jun. 30, 2018 € / shares	Jun. 30, 2017 USD ($) shares	Jun. 30, 2017 € / shares
Current Assets
Allowance for doubtful accounts receivable, current \| $	$ 6,898		$ 3,590
Stockholders' Equity
Preferred shares, par value \| € / shares		€ 0.01		€ 0.01
Preferred shares, shares authorized	100,000,000		100,000,000
Preferred shares, shares issued	0		0
Preferred shares, shares outstanding	0		0
Ordinary shares, par value \| € / shares		€ 0.01		€ 0.01
Ordinary shares, shares authorized	100,000,000		100,000,000
Ordinary shares, shares issued	44,080,627		44,080,627
Common Stock, Shares, outstanding	30,876,193		31,415,503
Treasury shares, shares	13,204,434		12,665,124

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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