Change in Estimate (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended			1 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended
	Jun. 30, 2014	Mar. 28, 2014	Dec. 27, 2013	Sep. 27, 2013	Jun. 30, 2013	Mar. 29, 2013	Dec. 28, 2012	Sep. 28, 2012	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012	Oct. 31, 2013 Current Site Remedy [Member]	Jun. 30, 2014 Current Site Remedy [Member] Scenario, Adjustment [Member]	Feb. 28, 2014 Supplemental Feasibility Study [Member]	Jun. 30, 2014 Supplemental Feasibility Study [Member] Scenario, Adjustment [Member]
Modification of Estimate												$ 12,439		$ 4,877
Sales Revenue, Services, Other	125,675	120,836	122,592	106,574	118,955	109,806	104,470	108,286	475,677	441,517	419,959		5,093		1,855
Net service revenue	94,492	88,081	91,131	81,252	86,889	83,044	75,254	75,216	354,956	320,403	301,780		7,346		3,022
Insurance recoverables and other income									$ 17,874	$ 4,514	$ 614		$ 12,439		$ 4,877