Condensed Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - shares	6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Exercise of stock options, shares	0	21,713
Issuance of deferred shares, shares	250,874	393,530
Employee Stock Purchase Plan, shares	12,283	9,577
Other treasury shares purchases, shares	52,043	133,322