PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details) (USD $)	12 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2012
Defined Benefit Plan Disclosure [Line Items]
Cost of premium for health coverage plan (in hundredths)	100.00%
Change in plan assets [Roll Forward]
Fair value of assets, beginning of year	$ 94,723,000
Fair value of assets, end of year	102,495,000
Amounts recognized in accumulated other comprehensive loss consist of (net of tax) [Abstract]
Net amount recognized	36,722,000		42,848,000
Amounts that will be recognized from accumulated other comprehensive income (loss) in next fiscal year [Abstract]
Accumulated benefit obligation for all defined benefit pension plans	123,832,000		125,846,000
Weighted average assumptions used to determine net periodic benefit cost [Abstract]
Weighted average healthcare cost trend rate (in hundredths)	8.00%
Ultimate healthcare cost trend rate (in hundredths)	5.00%
Percentage of increase in assumed healthcare cost trend rate (in hundredths)	1.00%
Effect of one percentage point increase on accumulated postretirement benefit obligation	351,000
Effect of one percentage point increase on service and interest cost components	13,000
Percentage of decrease in assumed healthcare cost trend rate (in hundredths)	1.00%
Effect of one percentage point decrease on accumulated postretirement benefit obligation	316,000
Effect of one percentage point decrease on service and interest cost components	12,000
Pension plan weighted-average asset allocations [Abstract]
Target Allocation (in hundredths)	100.00%
Actual Allocation (in hundredths)	100.00%		100.00%
Expected long term return on plan assets (in hundredths)	7.50%
Level I [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	50,080,000		47,265,000
Level II [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	31,386,000		25,474,000
Level III [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	21,029,000		21,984,000
Equity Securities [Member]
Pension plan weighted-average asset allocations [Abstract]
Target Allocation (in hundredths)	65.00%
Actual Allocation (in hundredths)	65.00%		64.00%
Debt Securities [Member]
Pension plan weighted-average asset allocations [Abstract]
Target Allocation (in hundredths)	25.00%
Actual Allocation (in hundredths)	23.00%		26.00%
Real Estate [Member]
Change in plan assets [Roll Forward]
Fair value of assets, beginning of year	8,697,000	[1]
Fair value of assets, end of year	11,206,000	[1]
Pension plan weighted-average asset allocations [Abstract]
Target Allocation (in hundredths)	10.00%
Actual Allocation (in hundredths)	12.00%		10.00%
Real Estate [Member] | Level I [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	0	[1]	0	[1]
Real Estate [Member] | Level II [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	11,206,000	[1]	5,685,000	[1]
Real Estate [Member] | Level III [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	0	[1]	3,012,000	[1]	5,324,000
Common Stock Held by Domestic Pension Plans [Member]
Pension plan weighted-average asset allocations [Abstract]
Actual Allocation (in hundredths)	3.20%		2.50%
Number of shares of equity included in plan assets (in shares)	98,211		98,211
Fair market value of shares held in pension plans	3,245,874		2,327,601
Cash and Cash Equivalents [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	965,000		2,376,000
Cash and Cash Equivalents [Member] | Level I [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	965,000		2,376,000
Cash and Cash Equivalents [Member] | Level II [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	0		0
Cash and Cash Equivalents [Member] | Level III [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	0		0
Fixed Income Securities [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	21,892,000	[2]	20,935,000	[2]
Fixed Income Securities [Member] | Level I [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	7,603,000	[2]	7,240,000	[2]
Fixed Income Securities [Member] | Level II [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	14,289,000	[2]	13,695,000	[2]
Fixed Income Securities [Member] | Level III [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	0	[2]	0	[2]
Domestic Equity Securities [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	30,727,000	[3]	28,334,000	[3]
Domestic Equity Securities [Member] | Level I [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	30,727,000	[3]	28,334,000	[3]
Domestic Equity Securities [Member] | Level II [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	0	[3]	0	[3]
Domestic Equity Securities [Member] | Level III [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	0	[3]	0	[3]
Foreign Equity Securities [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	16,676,000	[4]	15,409,000	[4]
Foreign Equity Securities [Member] | Level I [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	10,785,000	[4]	9,315,000	[4]
Foreign Equity Securities [Member] | Level II [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	5,891,000	[4]	6,094,000	[4]
Foreign Equity Securities [Member] | Level III [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	0	[4]	0	[4]
Other Plan Assets [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	14,689,000	[5]	13,153,000	[5]
Other Plan Assets [Member] | Level I [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	0	[5]	0	[5]
Other Plan Assets [Member] | Level II [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	0	[5]	0	[5]
Other Plan Assets [Member] | Level III [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	14,689,000	[5]	13,153,000	[5]	11,988,000
Variable Annuity [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	6,340,000	[6]	5,819,000	[6]
Variable Annuity [Member] | Level I [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	0	[6]	0	[6]
Variable Annuity [Member] | Level II [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	0	[6]	0	[6]
Variable Annuity [Member] | Level III [Member]
Change in plan assets [Roll Forward]
Fair value of assets, end of year	6,340,000	[6]	5,819,000	[6]	5,333,000
Pension Benefits [Member]
Change in benefit obligation [Roll Forward]
Benefit obligation, beginning of year	125,846,000		133,261,000
Service cost	536,000		367,000		292,000
Interest cost	5,425,000		5,399,000		6,231,000
Actuarial loss (gain)	1,221,000		(4,123,000)
Contributions by plan participants	174,000		162,000
Settlements	(121,000)
Benefits paid	(9,249,000)		(9,220,000)
Benefit obligation, end of year	123,832,000		125,846,000		133,261,000
Change in plan assets [Roll Forward]
Fair value of assets, beginning of year	94,723,000		88,775,000
Actual return on plan assets	14,031,000		10,500,000
Employer contribution	2,816,000		4,506,000
Contributions by plan participants	174,000		162,000
Benefits paid	(9,249,000)		(9,220,000)
Fair value of assets, end of year	102,495,000		94,723,000		88,775,000
Funded status	(21,337,000)		(31,123,000)
Amounts recognized in the balance sheet consist of [Roll Forward]
Other assets - noncurrent	680,000		566,000
Accrued liabilities - current	(1,189,000)		(389,000)
Accrued retirement benefits - noncurrent	(20,828,000)		(31,300,000)
Net amounts recognized	(21,337,000)		(31,123,000)
Amounts recognized in accumulated other comprehensive loss consist of (net of tax) [Abstract]
Net transition obligation	340,000		345,000
Actuarial net loss	33,220,000		38,933,000
Net amount recognized	33,560,000		39,278,000
Amounts that will be recognized from accumulated other comprehensive income (loss) in next fiscal year [Abstract]
Net transition obligation	38,000
Actuarial net loss	2,437,000
Net amount to be recognized	2,475,000
Information for pension plans with an accumulated benefit obligations in excess of plan assets [Abstract]
Projected and accumulated benefit obligation	122,045,000		123,933,000
Fair value of plan assets	100,028,000		92,244,000
Components of Net Periodic Benefit Cost [Abstract]
Service cost	536,000		367,000		292,000
Interest cost	5,425,000		5,399,000		6,231,000
Expected return on plan assets	(6,591,000)		(6,382,000)		(7,766,000)
Settlement loss	0		5,000		11,000
Amortization of transition obligation	32,000		35,000		34,000
Amortization of actuarial net loss	2,894,000		3,357,000		2,319,000
Net periodic benefit cost	2,296,000		2,781,000		1,121,000
Changes in plan assets and benefit obligations recognized in other comprehensive income [Abstract]
Net gain	(6,303,000)
Amortization of prior service benefit	7,000
Amortization of transition asset	(38,000)
Amortization of net (loss) gain	(2,894,000)
Total recognized in other comprehensive income	(9,228,000)
Net periodic benefit cost	2,296,000		2,781,000		1,121,000
Total recognized in net periodic benefit cost and other comprehensive income	(6,932,000)
Weighted average assumptions used to determine benefit obligations [Abstract]
Discount rate (in hundredths)	4.06%		4.35%
Expected return on plan assets (in hundredths)	7.39%		7.41%
Weighted average assumptions used to determine net periodic benefit cost [Abstract]
Discount rate (in hundredths)	4.35%		4.20%		5.16%
Expected return on plan assets (in hundredths)	7.41%		7.50%		8.50%
Other Postretirement Benefits [Member]
Change in benefit obligation [Roll Forward]
Benefit obligation, beginning of year	17,739,000		19,645,000
Service cost	37,000		34,000		41,000
Interest cost	659,000		766,000		985,000
Actuarial loss (gain)	(60,000)		(938,000)
Contributions by plan participants	581,000		677,000
Benefits paid	(2,372,000)		(2,445,000)
Benefit obligation, end of year	16,584,000		17,739,000		19,645,000
Change in plan assets [Roll Forward]
Fair value of assets, beginning of year	0		0
Actual return on plan assets	0		0
Employer contribution	1,791,000		1,768,000
Contributions by plan participants	581,000		677,000
Benefits paid	(2,372,000)		(2,445,000)
Fair value of assets, end of year	0		0		0
Funded status	(16,584,000)		(17,739,000)
Amounts recognized in the balance sheet consist of [Roll Forward]
Other assets - noncurrent	0		0
Accrued liabilities - current	(2,418,000)		(2,470,000)
Accrued retirement benefits - noncurrent	(14,166,000)		(15,269,000)
Net amounts recognized	(16,584,000)		(17,739,000)
Amounts recognized in accumulated other comprehensive loss consist of (net of tax) [Abstract]
Net transition obligation	0		0
Actuarial net loss	3,163,000		3,570,000
Net amount recognized	3,163,000		3,570,000
Amounts that will be recognized from accumulated other comprehensive income (loss) in next fiscal year [Abstract]
Net transition obligation	0
Actuarial net loss	638,000
Net amount to be recognized	638,000
Components of Net Periodic Benefit Cost [Abstract]
Service cost	37,000		34,000		41,000
Interest cost	659,000		766,000		985,000
Amortization of prior service cost	0		0		(508,000)
Amortization of actuarial net loss	602,000		792,000		929,000
Net periodic benefit cost	1,298,000		1,592,000		1,447,000
Changes in plan assets and benefit obligations recognized in other comprehensive income [Abstract]
Net gain	(59,000)
Amortization of prior service benefit	0
Amortization of transition asset	0
Amortization of net (loss) gain	(602,000)
Total recognized in other comprehensive income	(661,000)
Net periodic benefit cost	1,298,000		1,592,000		1,447,000
Total recognized in net periodic benefit cost and other comprehensive income	$ 637,000
Weighted average assumptions used to determine benefit obligations [Abstract]
Discount rate (in hundredths)	3.76%		3.99%
Weighted average assumptions used to determine net periodic benefit cost [Abstract]
Discount rate (in hundredths)	3.99%		4.20%		5.16%

[1] Real estate investments invested in common collective trusts and other mutual funds holding real estate investments. They are valued at the net asset value ("NAV") as determined by the custodian of the fund. The NAV is based on the fair value of the underlying assets owned by the fund, minus its liabilities, divided by the number of units outstanding. Level 2 investments represent funds where regular opportunities exist for the Company to sell the holdings, whereas Level 3 investments represent funds where less frequent opportunities exist during the year for the Company to sell it's holding in the funds.

[2] Fixed income consists of corporate bonds with investment grade BBB or better from diversified industries, as well as government debt securities. Corporate and government debt investments are valued utilizing a market approach that includes various valuation techniques and sources such as value generation models, broker quotes in active and inactive markets, benchmark yields and securities, reported trades, issuer spreads, and/or other applicable reference data.

[3] U.S. equity securities include companies that are well diversified by industry sector and equity style (i.e., growth and value strategies). Investments are primarily in large capitalization stocks and, to a lesser extent, mid- and small-cap stocks. These securities are valued at the closing price reported on the active market on which the individual securities are traded.

[4] International equities are invested in companies that are traded on exchanges outside the U.S. and are well diversified by industry sector, country, capitalization and equity style (i.e., growth and value strategies). Certain assets are invested in international commingled equity funds. The vast majority of the investments are made in companies in developed markets with a smaller percentage in emerging markets. Securities traded on exchanges are valued at the closing price reported on the active market on which the individual securities are traded. International commingled funds are valued at the net asset value ("NAV") as determined by the custodian of the fund. The NAV is based on the fair value of the underlying assets owned by the fund, minus its liabilities, divided by the number of units outstanding.

[5] Other consists of hedged equity mutual funds. These investments are valued at the net asset value ("NAV") as determined by the custodian of the fund. The NAV is based on the fair value of the underlying assets owned by the fund, minus its liabilities, divided by the number of units outstanding.

[6] Annuity contracts represent contractual agreements in which payments are made to an insurance company, which agrees to pay out an income or lump sum amount at a later date. Annuity contracts are valued at the net present value of future cash flows.