Share-Based Compensation (Details) - USD ($)		12 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation		$ 452,230	$ 1,095,051	$ 1,111,966
Number of shares that may be issued pursuant to the plan (in shares)		1,000,000
Shares available for grant under the plan (in shares)		747,000
Share-based compensation expense		$ 283,000	$ 652,000	762,000
Unvested shares remaining at end of period		28,000
Cost to be recognized in future periods		$ 49,000
Number of shares [Abstract]
Unvested awards at beginning of period (in shares)		65,000
Granted (in shares)	[1]	39,000
Vested (in shares)		(37,000)
Forfeited (in shares)		(39,000)
Unvested awards at end of period (in shares)		28,000	65,000
Weighted-average grant date fair value [Abstract]
Unvested awards at beginning of period (in dollars per share)		$ 20.47
Granted (in dollars per share)	[1]	20.17
Vested (in dollars per share)		20.70
Forfeited (in dollars per share)		20.17
Unvested awards at end of period (in dollars per share)		$ 20.15	$ 20.47
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition		8 months
2014 Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value		$ 169,000	$ 443,000	$ 350,000
Number of shares [Abstract]
Granted (in shares)		8,400	22,000	17,000
2015 Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value			$ 773,000
Number of shares [Abstract]
Granted (in shares)			39,000
2014 Performance Shares Member [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value				$ 801,000
Number of shares [Abstract]
Granted (in shares)				39,000
2016 Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value		$ 787,000
Number of shares [Abstract]
Granted (in shares)		39,000

[1] Represents the maximum number of shares which could be issued based on achieving the performance criteria.