Share-Based Compensation (Narrative) (Details)		12 Months Ended
	Dec. 02, 2016 shares	Jun. 30, 2017 USD ($) plans tranche shares	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share-based compensation plans | plans		2
Options granted during period (in shares)		77,339
Total aggregate intrinsic value of options exercised | $		$ 1,600,000	$ 1,300,000	$ 600,000
Fair value of options vested during period | $		$ 1,500,000	$ 1,500,000	$ 1,600,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted during period (in shares)		77,339
Vesting period (years)		3 years
Contractual life (years)		10 years
Exercise price percentage of fair market value at grant date		100.00%
Unrecognized compensation cost | $		$ 1,500,000
Weighted-average period of recognition of unrecognized compensation cost (years)		1 year
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost | $		$ 7,300,000
Weighted-average period of recognition of unrecognized compensation cost (years)		1 year 1 month 17 days
Shares granted (in shares)		170,368
Number of tranches | tranche		3
Shares withheld for income taxes for share based compensation (in shares)		43,669
2013 Long-Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grant		2,071,216
Non-Employee Directors, Certain Directors [Member] | 2013 Long-Term Incentive Plan [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (years)		6 months
Shares granted (in shares)	14,500
Amount to be divided by fair market value of common stock | $		$ 100,000
Number of days to calculate average value per share		45 days