Share-based Compensation (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Stock-based compensation costs recognized in the entity's statements of income
Tax benefit at statutory rate	$ 34	$ 31	$ 57	$ 68
Stock options
Stock-based compensation costs recognized in the entity's statements of income
Stock based compensation	226	339	542	727
Employee stock purchase plan
Stock-based compensation costs recognized in the entity's statements of income
Stock based compensation	15	9	42	19
Restricted stock
Stock-based compensation costs recognized in the entity's statements of income
Stock based compensation	$ 41	$ 143	$ 356	$ 416