Stock-Based Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Mar. 31, 2013
Summary of stock option activity under our stock incentive plan
Shares, Beginning Balance	332,800
Shares, Granted	40,000
Shares, Exercised	(17,700)
Shares, Expired	(2,000)
Shares, Forfeited	(4,000)
Shares, Ending Balance	349,100
Shares, Exercisable	210,600
Weighted Average Exercise Price, Beginning Balance	$ 28.19
Weighted Average Exercise Price, Granted	$ 25.64
Weighted Average Exercise Price, Exercised	$ 12.80
Weighted Average Exercise Price, Expired	$ 44.93
Weighted Average Exercise Price, Forfeited	$ 17.59
Weighted Average Exercise Price, Ending Balance	$ 28.70
Weighted Average Exercise Price, Exercisable	$ 31.84
Weighted Average Remaining Contractual Term, Outstanding, March 31, 2013	5 years 1 month 6 days
Weighted Average Remaining Contractual Term, Exercisable, March 31, 2013	4 years
Aggregate Intrinsic Value, Outstanding, March 31, 2013	$ 2,362
Aggregate Intrinsic Value, Exercisable, March 31, 2013	$ 1,739