Other Comprehensive Income (Loss) (Details) (USD $) In Thousands	12 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2009
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accumulated other comprehensive income (loss), begininng balance	$ (28,005)
Other comprehensive income (loss)	11,842	3,623	(20,109)
Accumulated other comprehensive income (loss), ending balance	(16,163)	(28,005)
Accumulated Other Comprehensive Income (Loss) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accumulated other comprehensive income (loss), begininng balance	(28,005)	(31,628)	(11,519)
Current-year adjustments, pretax	19,414	5,939	(32,966)
Tax expense	(7,572)	(2,316)	12,857
Other comprehensive income (loss)	11,842	3,623	(20,109)
Accumulated other comprehensive income (loss), ending balance	(16,163)	(28,005)	(31,628)
Minimum Pension/Post Retirement Liability Adjustments [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accumulated other comprehensive income (loss), begininng balance	(28,005)	(30,374)	(10,232)
Current-year adjustments, pretax	19,414	3,884	(33,020)
Tax expense	(7,572)	(1,515)	12,878
Other comprehensive income (loss)	11,842	2,369	(20,142)
Accumulated other comprehensive income (loss), ending balance	(16,163)	(28,005)	(30,374)
Interest Rate Swaps [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accumulated other comprehensive income (loss), begininng balance	0	(1,254)	(1,287)
Current-year adjustments, pretax	0	2,055	54
Tax expense	0	(801)	(21)
Other comprehensive income (loss)	0	1,254	33
Accumulated other comprehensive income (loss), ending balance	$ 0	$ 0	$ (1,254)