Income Taxes Income Taxes - Reconciliation between Federal Statutory rate and Income Tax Benefit (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 30, 2011
Income Tax Expense (Benefit), Income Tax Reconciliation [Abstract]
Tax benefit at U.S. Federal statutory rate	$ (13,880)	$ (13,472)	$ (20,791)
State income taxes, net of U.S. Federal income tax benefit	(1,052)	188	205
Earnings taxed at rates different than the U.S. Federal statutory rate	(6,051)	(6,271)	(6,049)
Changes in enacted tax rates	488	(63)	135
Change in valuation allowances	16,722	16,310	24,689
Impact of changes in uncertain tax positions	(12,179)	386	938
Foreign dividends	0	0	2,889
Other, net	1,191	1,199	1,299
Income Tax Expense (Benefit)	$ (14,761)	$ (1,723)	$ 3,315