Share - Based Compensation Textuals (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	$ 1,595	$ 1,749	$ 1,768
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	2 years
Aggregate number of shares of common stock awarded under the 2015 Plan	2,500
Shares available for future grants	2,449
Compensation expense	$ 4,067	4,461	4,511
Share-based compensation arrangement by share-based payment award, award vesting period	4 years
Stock Options and Stock Appreciation Rights [ Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	2 years 7 months
Weighted-average remaining contractual terms for SARs/stock options outstanding	6 years 4 months
Weighted-average remaining contractual terms for SARs/stock options exercisable	4 years 10 months
Weighted-average remaining contractual terms for SARs/stock options expected to vest	8 years 6 months
Aggregate intrinsic values of SARs and stock options outstanding	$ 10,491
Aggregate intrinsic values of SARs/stock options exercisable	8,546
Aggregate intrinsic values of SARs/stock options expected to vest	1,827
Aggregate intrinsic values of SARs/stock options exercised during period	2,422	1,601	5,241
Total fair value of shares vested	1,291	2,187	2,080
Compensation expense	$ 1,543	1,610	1,808
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	1 year 8 months
Shares available for future grants	96
Compensation expense	$ 446	836	309
Share-based compensation arrangement by share-based payment award, award vesting period	3 years
Restricted Stock Units (RSUs) [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period	1 year
Restricted Stock Units (RSUs) [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period	4 years
Restricted stock and Restricted Stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	2 years
Compensation expense	$ 2,078	$ 2,015	$ 2,394
Restricted stock and Restricted Stock units [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period	1 year
Restricted stock and Restricted Stock units [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period	4 years