Components of Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Sep. 26, 2014	Dec. 31, 2013
Discontinued Operations And Disposal Groups [Abstract]
Accounts receivable, net	$ 95	$ 5,361
Inventories	161	8,454
Prepaid and other current assets	8	247
Other assets	367	2,026
Assets of discontinued operations	631	16,088
Accounts payable	16	2,393
Accrued expenses and other current liabilities	1,188	2,295
Other liabilities	233	1,710
Liabilities of discontinued operations	$ 1,437	$ 6,398