Defined Benefit Retirement Plan (Details) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Employer Discretionary Contribution Amount			$ 500,000
Service cost	$ 251,000	$ 248,000	502,000	$ 496,000
Interest cost	289,000	265,000	578,000	529,000
Expected return on plan assets	(409,000)	(428,000)	(818,000)	(856,000)
Amortization of unrecognized net loss	94,000	62,000	188,000	123,000
Amortization of prior service cost	(22,000)	(22,000)	(44,000)	(43,000)
Net periodic benefit cost	$ 203,000	$ 125,000	$ 406,000	$ 249,000