Quarterly Financial Data Quarterly Financial Data (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended
Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Quarterly Financial Data [Abstract]
Revenues	$ 118,287	$ 191,924	$ 243,572	$ 121,468	$ 113,394	$ 180,269	$ 235,963	$ 113,817	$ 675,251	$ 643,443	$ 622,802
Gross Profit	22,457	60,296	85,853	29,500	20,271	54,691	84,846	24,681	198,106	184,999	175,641
Selling, General and Administrative Expense	42,398	43,121	47,415	39,903	39,608	41,789	44,592	36,871	172,837	162,860	160,838
Operating Income (Loss)	(19,881)	17,171	38,288	(10,408)	(18,884)	12,890	40,246	(12,113)	25,170	22,139	14,884
Net Income (Loss) Attributable to Parent	$ (11,112)	$ 10,272	$ 22,616	$ (6,247)	$ (13,952)	$ 11,216	$ 44,743	$ (12,345)	$ 15,529	$ 29,662	$ 13,227
Earnings Per Share, Basic	$ (0.47)	$ 0.44	$ 0.97	$ (0.27)	$ (0.61)	$ 0.49	$ 1.97	$ (0.55)	$ 0.67	$ 1.30	$ 0.59
Earnings Per Share, Diluted	$ (0.47)	$ 0.43	$ 0.95	$ (0.27)	$ (0.61)	$ 0.48	$ 1.92	$ (0.55)	$ 0.65	$ 1.27	$ 0.57
Stock Trade Price, High	$ 10.75	$ 12.22	$ 12.41	$ 13.41	$ 11.63	$ 10.43	$ 11.00	$ 13.36
Stock Trade Price, Low	$ 9.39	$ 9.67	$ 9.94	$ 10.35	$ 7.01	$ 7.70	$ 9.85	$ 9.80

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

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