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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details) (USD $)
12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
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, end of year $ 94,723,000    
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 125,846,000 133,261,000  
Weighted average assumptions used to determine net periodic benefit cost [Abstract]      
Weighted average healthcare cost trend rate (in hundredths) 7.50%    
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 406,000    
Effect of one percentage point increase on service and interest cost components 17,000    
Percentage of decrease in assumed healthcare cost trend rate (in hundredths) 1.00%    
Effect of one percentage point decrease on accumulated postretirement benefit obligation 365,000    
Effect of one percentage point decrease on service and interest cost components 15,000    
Pension plan weighted-average asset allocations [Abstract]      
Target Allocation (in hundredths) 100.00%    
Actual Allocation (in hundredths) 100.00% 100.00%  
Number of shares of equity included in plan assets (in shares) 98,211 98,211  
Fair market value of shares held in pension plans 2,327,601 1,815,921  
Percentage of fair market value of entity's common stock (in hundredths) 2.50% 2.20%  
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 47,265,000    
Level II [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 25,474,000    
Level III [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 21,984,000    
Equity Securities [Member]
     
Pension plan weighted-average asset allocations [Abstract]      
Target Allocation (in hundredths) 65.00%    
Actual Allocation (in hundredths) 64.00% 64.00%  
Debt Securities [Member]
     
Pension plan weighted-average asset allocations [Abstract]      
Target Allocation (in hundredths) 25.00%    
Actual Allocation (in hundredths) 26.00% 25.00%  
Real Estate [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 8,697,000    
Pension plan weighted-average asset allocations [Abstract]      
Target Allocation (in hundredths) 10.00%    
Actual Allocation (in hundredths) 10.00% 11.00%  
Real Estate [Member] | Level I [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 0    
Real Estate [Member] | Level II [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 5,685,000    
Real Estate [Member] | Level III [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 3,012,000 5,324,000  
Cash and Cash Equivalents [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 2,376,000    
Cash and Cash Equivalents [Member] | Level I [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 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    
Cash and Cash Equivalents [Member] | Level III [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 0    
Fixed Income Securities [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 20,935,000 [1]    
Fixed Income Securities [Member] | Level I [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 7,240,000 [1]    
Fixed Income Securities [Member] | Level II [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 13,695,000 [1]    
Fixed Income Securities [Member] | Level III [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 0 [1]    
Domestic Equity Securities [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 28,334,000 [2]    
Domestic Equity Securities [Member] | Level I [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 28,334,000 [2]    
Domestic Equity Securities [Member] | Level II [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 0 [2]    
Domestic Equity Securities [Member] | Level III [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 0 [2]    
Foreign Equity Securities [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 15,409,000 [3]    
Foreign Equity Securities [Member] | Level I [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 9,315,000 [3]    
Foreign Equity Securities [Member] | Level II [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 6,094,000 [3]    
Foreign Equity Securities [Member] | Level III [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 0 [3]    
Other Plan Assets [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 13,153,000 [4]    
Other Plan Assets [Member] | Level I [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 0 [4]    
Other Plan Assets [Member] | Level II [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 0 [4]    
Other Plan Assets [Member] | Level III [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 13,153,000 [4] 11,988,000  
Variable Annuity [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 5,819,000    
Variable Annuity [Member] | Level I [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 0    
Variable Annuity [Member] | Level II [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 0    
Variable Annuity [Member] | Level III [Member]
     
Change in plan assets [Roll Forward]      
Fair value of assets, end of year 5,819,000 5,333,000  
Pension Benefits [Member]
     
Change in benefit obligation [Roll Forward]      
Benefit obligation, beginning of year 133,261,000 126,514,000  
Service cost 367,000 292,000 198,000
Interest cost 5,399,000 6,231,000 6,324,000
Actuarial (gain) loss (4,123,000) 9,082,000  
Contributions by plan participants 162,000 182,000  
Benefits paid (9,220,000) (9,040,000)  
Benefit obligation, end of year 125,846,000 133,261,000 126,514,000
Change in plan assets [Roll Forward]      
Fair value of assets, beginning of year 88,775,000 97,530,000  
Actual return on plan assets 10,500,000 (4,077,000)  
Employer contribution 4,506,000 4,180,000  
Contributions by plan participants 162,000 182,000  
Benefits paid (9,220,000) (9,040,000)  
Fair value of assets, end of year 94,723,000 88,775,000 97,530,000
Funded status (31,123,000) (44,486,000)  
Amounts recognized in the balance sheet consist of [Roll Forward]      
Other assets - noncurrent 566,000 411,000  
Accrued liabilities - current (389,000) (113,000)  
Accrued retirement benefits - noncurrent (31,300,000) (44,784,000)  
Net amounts recognized (31,123,000) (44,486,000)  
Amounts recognized in accumulated other comprehensive loss consist of (net of tax) [Abstract]      
Net transition obligation 345,000 369,000  
Actuarial net loss 38,933,000 46,163,000  
Net amount recognized 39,278,000 46,532,000  
Amounts that will be recognized from accumulated other comprehensive income (loss) in next fiscal year [Abstract]      
Net transition obligation 36,000    
Actuarial net loss 2,889,000    
Net amount to be recognized 2,925,000    
Information for pension plans with an accumulated benefit obligations in excess of plan assets [Abstract]      
Projected and accumulated benefit obligation 123,933,000 131,369,000  
Fair value of plan assets 92,244,000 86,472,000  
Components of Net Periodic Benefit Cost [Abstract]      
Service cost 367,000 292,000 198,000
Interest cost 5,399,000 6,231,000 6,324,000
Expected return on plan assets (6,382,000) (7,766,000) (6,096,000)
Settlement loss 5,000 11,000 23,000
Amortization of transition obligation 35,000 34,000 0
Amortization of actuarial net loss 3,357,000 2,319,000 3,118,000
Net periodic benefit cost 2,781,000 1,121,000 3,567,000
Changes in plan assets and benefit obligations recognized in other comprehensive income [Abstract]      
Net gain (8,357,000)    
Amortization of prior service benefit 0    
Amortization of transition asset (35,000)    
Amortization of net (loss) gain (3,357,000)    
Total recognized in other comprehensive income (11,749,000)    
Net periodic benefit cost 2,781,000 1,121,000 3,567,000
Total recognized in net periodic benefit cost and other comprehensive income (8,968,000)    
Weighted average assumptions used to determine benefit obligations [Abstract]      
Discount rate (in hundredths) 4.35% 4.20%  
Expected return on plan assets (in hundredths) 7.41% 7.50%  
Weighted average assumptions used to determine net periodic benefit cost [Abstract]      
Discount rate (in hundredths) 4.20% 5.16% 5.09%
Expected return on plan assets (in hundredths) 7.50% 8.50% 8.50%
Other Postretirement Benefits [Member]
     
Change in benefit obligation [Roll Forward]      
Benefit obligation, beginning of year 19,645,000 20,571,000  
Service cost 34,000 41,000 32,000
Interest cost 766,000 985,000 1,096,000
Actuarial (gain) loss (938,000) 161,000  
Contributions by plan participants 677,000 0  
Benefits paid (2,445,000) (2,113,000)  
Benefit obligation, end of year 17,739,000 19,645,000 20,571,000
Change in plan assets [Roll Forward]      
Fair value of assets, beginning of year 0 0  
Actual return on plan assets 0 0  
Employer contribution 1,768,000 2,113,000  
Contributions by plan participants 677,000 0  
Benefits paid (2,445,000) (2,113,000)  
Fair value of assets, end of year 0 0 0
Funded status (17,739,000) (19,645,000)  
Amounts recognized in the balance sheet consist of [Roll Forward]      
Other assets - noncurrent 0 0  
Accrued liabilities - current (2,470,000) (2,862,000)  
Accrued retirement benefits - noncurrent (15,269,000) (16,783,000)  
Net amounts recognized (17,739,000) (19,645,000)  
Amounts recognized in accumulated other comprehensive loss consist of (net of tax) [Abstract]      
Net transition obligation 0 0  
Actuarial net loss 3,570,000 4,549,000  
Net amount recognized 3,570,000 4,549,000  
Amounts that will be recognized from accumulated other comprehensive income (loss) in next fiscal year [Abstract]      
Net transition obligation 0    
Actuarial net loss 602,000    
Net amount to be recognized 602,000    
Components of Net Periodic Benefit Cost [Abstract]      
Service cost 34,000 41,000 32,000
Interest cost 766,000 985,000 1,096,000
Amortization of prior service cost 0 (508,000) (678,000)
Amortization of actuarial net loss 792,000 929,000 1,124,000
Net periodic benefit cost 1,592,000 1,447,000 1,574,000
Changes in plan assets and benefit obligations recognized in other comprehensive income [Abstract]      
Net gain (938,000)    
Amortization of prior service benefit 0    
Amortization of transition asset 0    
Amortization of net (loss) gain (792,000)    
Total recognized in other comprehensive income (1,730,000)    
Net periodic benefit cost 1,592,000 1,447,000 1,574,000
Total recognized in net periodic benefit cost and other comprehensive income $ (138,000)    
Weighted average assumptions used to determine benefit obligations [Abstract]      
Discount rate (in hundredths) 3.99% 4.20%  
Weighted average assumptions used to determine net periodic benefit cost [Abstract]      
Discount rate (in hundredths) 4.20% 5.16% 5.09%
[1] Fixed income consists of corporate bonds with investment grade BBB or better from diversified industries, as well as government debt securities.
[2] 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.
[3] 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). The vast majority of the investments are made in companies in developed markets with a smaller percentage in emerging markets.
[4] Other consists of hedged equity.