Share-based Compensation (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Stock-based compensation costs recognized in the entity's statements of income
Tax benefit at statutory rate	$ 42	$ 31	$ 99	$ 99
Stock options
Stock-based compensation costs recognized in the entity's statements of income
Share based compensation	233	347	775	1,074
Employee stock purchase plan
Stock-based compensation costs recognized in the entity's statements of income
Share based compensation	19	27	61	45
Restricted stock
Stock-based compensation costs recognized in the entity's statements of income
Share based compensation		$ 124	$ 356	$ 540