Variable Interest Entity (Details) (USD $)	6 Months Ended
	Dec. 27, 2013	Jun. 30, 2013	Dec. 28, 2012	Jun. 30, 2012	Dec. 27, 2013 Variable Interest Entity, Primary Beneficiary [Member]	Jun. 30, 2013 Variable Interest Entity, Primary Beneficiary [Member]	Dec. 27, 2013 Subordinated Debt Variable Interest Entity, Primary Beneficiary [Member]	Oct. 01, 2013 Subordinated Debt Variable Interest Entity, Primary Beneficiary [Member] CAH note payable
Current assets:
Cash and cash equivalents	$ 8,546,000	$ 18,136,000	$ 10,830,000	$ 16,561,000	$ 0	$ 40,000
Restricted investments	4,845,000	5,582,000			63,000	63,000
Total current assets	201,651,000	185,350,000			63,000	103,000
Other assets	14,360,000	13,992,000			4,344,000	4,344,000
Total assets	320,804,000	307,764,000			4,407,000	4,447,000
Current liabilities:
Current portion of long-term debt	4,717,000	4,745,000			0	2,448,000
Environmental remediation liabilities	136,000	291,000			5,000	0
Other accrued liabilities	7,705,000	6,375,000			0	13,000
Total current liabilities	123,558,000	123,713,000			5,000	2,461,000
Long-term environmental remediation liabilities	6,418,000	6,973,000			23,000	1,000
Total liabilities	204,364,000	200,867,000			28,000	2,462,000
Variable Interest Entity, Amount of Financial Support	3,948,000
Subordinated Long-term Debt, Noncurrent							$ 1,500,000	$ 2,448,000