Pension and Postretirement Benefit Plans (Fair Values and Financial Statement Presentation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Amounts Recognized in Accumulated Other Comprehensive Loss [Abstract]
Unrecognized net actuarial losses (gains), net of taxes	$ 10,663
Unrecognized prior service cost (credit), net of taxes	(127)
Total	10,536
Pension [Member]
Fair Value Measurements for Pension Assets [Abstract]
Fair value of plan assets	141,586	$ 145,179	$ 128,267
Amounts Recognized in Balance Sheet [Abstract]
Other assets, Prepaid benefit cost	18,071	23,078
Accrued expenses-compensation and benefits, Accrued benefit liability	(2,780)	(2,408)
Other noncurrent liabilities, Accrued benefit liability	(29,132)	(28,099)
Net amount recognized, end of year	(13,841)	(7,429)
Projected and Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Projected benefit obligation	32,012	30,550
Accumulated benefit obligation	29,099	26,379
Fair value of plan assets	100	44
Components of Net Periodic Benefit Costs [Abstract]
Service cost	12,173	10,196	10,100
Interest cost	5,582	5,604	4,911
Expected return on plan assets	(11,037)	(9,687)	(9,465)
Prior service cost (credit) amortization	225	391	359
Actuarial loss (gain) amortization	667	2,030	3,250
Curtailment credit	0	0	0
Net periodic benefit costs (credit)	7,610	8,534	9,155
Amounts Recognized in Accumulated Other Comprehensive Loss [Abstract]
Unrecognized net actuarial losses (gains), net of taxes	12,733
Unrecognized prior service cost (credit), net of taxes	589
Total	13,322
Pension [Member] | Investments in Registered Investment Companies [Member]
Fair Value Measurements for Pension Assets [Abstract]
Fair value of plan assets	140,983	144,619
Pension [Member] | Pooled Seperate Accounts [Member]
Fair Value Measurements for Pension Assets [Abstract]
Fair value of plan assets	603	560
Pension [Member] | Quoted Prices (Level 1) [Member]
Fair Value Measurements for Pension Assets [Abstract]
Fair value of plan assets	80,229	85,509
Pension [Member] | Quoted Prices (Level 1) [Member] | Investments in Registered Investment Companies [Member]
Fair Value Measurements for Pension Assets [Abstract]
Fair value of plan assets	80,229	85,509
Pension [Member] | Quoted Prices (Level 1) [Member] | Pooled Seperate Accounts [Member]
Fair Value Measurements for Pension Assets [Abstract]
Fair value of plan assets	0	0
Pension [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value Measurements for Pension Assets [Abstract]
Fair value of plan assets	0	0
Pension [Member] | Significant Other Observable Inputs (Level 2) [Member] | Investments in Registered Investment Companies [Member]
Fair Value Measurements for Pension Assets [Abstract]
Fair value of plan assets	0	0
Pension [Member] | Significant Other Observable Inputs (Level 2) [Member] | Pooled Seperate Accounts [Member]
Fair Value Measurements for Pension Assets [Abstract]
Fair value of plan assets	0	0
Pension [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value Measurements for Pension Assets [Abstract]
Fair value of plan assets	0	0
Pension [Member] | Significant Unobservable Inputs (Level 3) [Member] | Investments in Registered Investment Companies [Member]
Fair Value Measurements for Pension Assets [Abstract]
Fair value of plan assets	0	0
Pension [Member] | Significant Unobservable Inputs (Level 3) [Member] | Pooled Seperate Accounts [Member]
Fair Value Measurements for Pension Assets [Abstract]
Fair value of plan assets	0	0
Postretirement [Member]
Fair Value Measurements for Pension Assets [Abstract]
Fair value of plan assets	0	0	0
Amounts Recognized in Balance Sheet [Abstract]
Other assets, Prepaid benefit cost	0	0
Accrued expenses-compensation and benefits, Accrued benefit liability	(700)	(770)
Other noncurrent liabilities, Accrued benefit liability	(8,708)	(9,675)
Net amount recognized, end of year	(9,408)	(10,445)
Components of Net Periodic Benefit Costs [Abstract]
Service cost	117	170	377
Interest cost	407	480	611
Expected return on plan assets	0	0	0
Prior service cost (credit) amortization	(432)	(440)	(537)
Actuarial loss (gain) amortization	(433)	(365)	0
Curtailment credit	0	(1,511)	0
Net periodic benefit costs (credit)	(341)	$ (1,666)	$ 451
Amounts Recognized in Accumulated Other Comprehensive Loss [Abstract]
Unrecognized net actuarial losses (gains), net of taxes	(2,070)
Unrecognized prior service cost (credit), net of taxes	(716)
Total	$ (2,786)