Consolidated Balance Sheets (Parenthetical) $ in Thousands	Sep. 30, 2019 USD ($) shares	Sep. 30, 2019 € / shares	Jun. 30, 2019 USD ($) shares	Jun. 30, 2019 € / shares
Current Assets
Allowance for doubtful accounts receivable, current | $	$ 8,781		$ 7,313
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	28,483,314		30,445,669
Treasury Stock, Shares	15,597,313		13,634,958