Variable Interest Entity (Details) (USD $)	6 Months Ended
	Dec. 26, 2014	Jun. 30, 2014	Oct. 01, 2013
Current assets:
Restricted investments	$ 2,553,000	$ 2,934,000
Total current assets	220,767,000	221,041,000
Other assets	15,888,000	13,490,000
Total assets	341,850,000	335,585,000
Current liabilities:
Environmental remediation liabilities	184,000	138,000
Total current liabilities	131,537,000	132,225,000
Long-term environmental remediation liabilities	8,511,000	6,268,000
Total liabilities	208,535,000	210,702,000
Variable Interest Entity, Amount of Financial Support	4,008,000
Variable Interest Entity, Primary Beneficiary [Member]
Current assets:
Restricted investments	63,000	63,000
Total current assets	63,000	63,000
Other assets	4,344,000	4,344,000
Total assets	4,407,000	4,407,000
Current liabilities:
Environmental remediation liabilities	2,000	7,000
Total current liabilities	2,000	7,000
Long-term environmental remediation liabilities	19,000	16,000
Total liabilities	21,000	23,000
Subordinated Debt | Variable Interest Entity, Primary Beneficiary [Member] | CAH note payable
Current liabilities:
Subordinated Long-term Debt, Noncurrent			$ 2,448,000