Variable Interest Entity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 27, 2013	Jun. 30, 2013	Sep. 28, 2012	Jun. 30, 2012
Current assets:
Cash and cash equivalents	$ 21,988	$ 18,136	$ 14,852	$ 16,561
Restricted investments	5,632	5,582
Total current assets	210,252	185,350
Other assets	15,226	13,992
Total assets	333,169	307,764
Current liabilities:
Current portion of long-term debt	8,325	4,745
Environmental remediation liabilities	134	291
Other accrued liabilities	7,927	6,375
Total current liabilities	138,998	123,713
Long-term debt, net of current portion	366	568
Long-term environmental remediation liabilities	6,479	6,973
Total liabilities	221,018	200,867
Variable Interest Entity, Financial or Other Support, Amount	1,473
CAH
Current assets:
Cash and cash equivalents	0	40
Restricted investments	63	63
Total current assets	63	103
Other assets	4,344	4,344
Total assets	4,407	4,447
Current liabilities:
Current portion of long-term debt	2,448	2,448
Environmental remediation liabilities	3	0
Other accrued liabilities	13	13
Total current liabilities	2,464	2,461
Long-term environmental remediation liabilities	20	1
Total liabilities	$ 2,484	$ 2,462