Condensed Consolidated Statements of Changes in Stockholders' Equity (Parenthetical)	6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2011 Additional Paid-In Capital	Dec. 31, 2012 Additional Paid-In Capital	Dec. 31, 2011 Treasury Stock	Dec. 31, 2012 Treasury Stock
Exercise of stock options, shares	21,600	15,400	15,400	21,600	15,400	21,600
Issuance of deferred shares, shares	350,048	161,222	161,222	350,048	161,222	350,048
Employee Stock Purchase Plan, shares	2,055	2,636	2,636	2,055	2,636	2,055
Open market purchase of treasury shares, shares		886,503			886,503
Other treasury shares purchases, shares	101,271	45,143			45,143	101,271