Share-based Compensation (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Stock-based compensation costs recognized in the entity's statements of income
Tax benefit at statutory rate	$ 138	$ 88	$ 80
Stock options
Stock-based compensation costs recognized in the entity's statements of income
Share based compensation	1,436	1,013	1,173
Employee stock purchase plan
Stock-based compensation costs recognized in the entity's statements of income
Share based compensation	57	57	53
Restricted stock
Stock-based compensation costs recognized in the entity's statements of income
Share based compensation	$ 669	$ 754	$ 812