Share-Based Compensation (Stock Option Plans) (Details) - USD ($)	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, beginning of year (in shares)	1,071,097
Options granted during period (in shares)	166,593
Exercised during the period (in shares)	(71,659)
Canceled, forfeited or expired during the period	0
Outstanding, end of year (in shares)	1,166,031	1,071,097
Vested and expected to vest at June 30, 2015 (in shares)	1,164,033
Exercisable, end of year (in shares)	879,451
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding, beginning of year, Weighted-Average Exercise Price (in dollars per share)	$ 33.91
Granted during the period, Weighted-Average Exercise Price (in dollars per share)	41.11
Exercised during the period, Weighted-Average Exercise Price (in dollars per share)	31.43
Canceled, forfeited, or expired during the period, Weighted-Average Exercise Price (in dollars per share)	0.00
Outstanding, end of year, Weighted-Average Exercise Price (in dollars per share)	35.09	$ 33.91
Vested and expected to vest, Weighted-Average Exercise Price (in dollars per share)	35.08
Exercisable, end of year, Weighted-Average Exercise Price (in dollars per share)	$ 33.49
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	5 years 4 months 18 days
Vested and expected to vest, Weighted-Average Remaining Contractual Life (years)	5 years 4 months 18 days
Exercisable, end of Year, Weighted-Average Remaining Contractual Life (years)	4 years 2 months 25 days
Outstanding, Aggregate Intrinsic Value	$ 4,531,055
Vested and expected to vest, Aggregate Intrinsic Value	4,530,942
Exercisable, end of Year, Aggregate Intrinsic Value	$ 4,204,989
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Granted, weighted-average grant date fair value (in dollars per share)	$ 10.51	11.91	$ 10.48
Unvested Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options granted during period (in shares)	166,593
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding, beginning of year, Weighted-Average Exercise Price (in dollars per share)	$ 36.93
Granted during the period, Weighted-Average Exercise Price (in dollars per share)	41.11
Exercised during the period, Weighted-Average Exercise Price (in dollars per share)	35.58
Canceled, forfeited, or expired during the period, Weighted-Average Exercise Price (in dollars per share)	0.00
Outstanding, end of year, Weighted-Average Exercise Price (in dollars per share)	$ 39.98	$ 36.93
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Nonvested, beginning of year (in shares)	250,932
Vested during period (in shares)	(130,945)
Canceled or forfeited during period (in shares)	0
Nonvested, end of year (in shares)	286,580	250,932
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Unvested, beginning of year, weighted-average grant date fair value (in dollars per share)	$ 11.72
Granted, weighted-average grant date fair value (in dollars per share)	10.51
Vested during period, weighted-average grant date fair value (in dollars per share)	11.96
Canceled or forfeited during period, weighted-average grant date fair value (in dollars per share)	0.00
Unvested, end of period, weighted-average grant date fair value (in dollars per share)	$ 10.91	$ 11.72