Share-based Compensation (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Stock-based compensation costs recognized in the entity's statements of income
Tax benefit at statutory rate	$ 23	$ 38
Stock options
Stock-based compensation costs recognized in the entity's statements of income
Share based compensation	315	389
Employee stock purchase plan
Stock-based compensation costs recognized in the entity's statements of income
Share based compensation	27	9
Restricted stock
Stock-based compensation costs recognized in the entity's statements of income
Share based compensation	$ 314	$ 273