Supplemental Guarantor Condensed Financial Information - Consolidated Balance Sheets (Details) (USD $) In Thousands, unless otherwise specified	Jun. 28, 2013	Dec. 31, 2012	Jun. 29, 2012	Dec. 30, 2011
Condensed Financial Statements, Captions [Line Items]
Subsidiary Ownership Percentage	100.00%
ASSETS
Cash and cash equivalents	$ 5,101	$ 10,024	$ 11,901	$ 14,327
Accounts receivable, less allowance for doubtful accounts	106,664	73,876
Inventories, net	100,998	89,294
Income taxes receivable	1,198	1,527
Deferred income taxes	905	907
Other current assets	6,568	4,789
Total current assets	221,434	180,417
Property, plant and equipment, net	130,831	141,208
Amounts due from affiliates	0	0
Goodwill	197,126	199,375
Customer relationships, net	47,119	54,589
Other intangible assets, net	7,373	7,475
Investments in consolidated subsidiaries	0	0
Deferred income taxes	85	68
Other assets	9,726	11,290
Total assets	613,694	594,422
LIABILITIES AND SHAREHOLDERS’ (DEFICIT) EQUITY
Accounts payable	80,920	55,883
Accrued expenses and other current liabilities	27,228	30,667
Accrued interest payable	9,006	9,017
Current portion of long-term debt	3,333	0
Deferred income taxes	835	847
Total current liabilities	121,322	96,414
Long-term debt	539,869	516,674
Amounts due to affiliates	0	0
Deferred income taxes	20,350	20,419
Other liabilities	46,432	46,907
Total liabilities	727,973	680,414
Shareholders’ (deficit) equity:
Common stock	189	189
Additional paid-in capital	723,431	721,869
Accumulated loss	(848,527)	(818,855)
Accumulated other comprehensive income	10,628	10,805
Total shareholders’ (deficit) equity	(114,279)	(85,992)
Total liabilities and shareholders’ (deficit) equity	613,694	594,422
Parent
ASSETS
Cash and cash equivalents	0	0	0	0
Accounts receivable, less allowance for doubtful accounts	0	0
Inventories, net	0	0
Income taxes receivable	0	0
Deferred income taxes	0	0
Other current assets	0	0
Total current assets	0	0
Property, plant and equipment, net	0	0
Amounts due from affiliates	0	0
Goodwill	0	0
Customer relationships, net	0	0
Other intangible assets, net	0	0
Investments in consolidated subsidiaries	(109,415)	(81,316)
Deferred income taxes	0	0
Other assets	0	0
Total assets	(109,415)	(81,316)
LIABILITIES AND SHAREHOLDERS’ (DEFICIT) EQUITY
Accounts payable	0	0
Accrued expenses and other current liabilities	17	10
Accrued interest payable	0	0
Current portion of long-term debt	0
Deferred income taxes	0	0
Total current liabilities	17	10
Long-term debt	0	0
Amounts due to affiliates	4,847	4,666
Deferred income taxes	0	0
Other liabilities	0	0
Total liabilities	4,864	4,676
Shareholders’ (deficit) equity:
Common stock	189	189
Additional paid-in capital	723,431	721,869
Accumulated loss	(848,527)	(818,855)
Accumulated other comprehensive income	10,628	10,805
Total shareholders’ (deficit) equity	(114,279)	(85,992)
Total liabilities and shareholders’ (deficit) equity	(109,415)	(81,316)
Issuer
ASSETS
Cash and cash equivalents	240	1,574	157	962
Accounts receivable, less allowance for doubtful accounts	59,523	39,743
Inventories, net	72,696	62,986
Income taxes receivable	308	388
Deferred income taxes	794	793
Other current assets	4,547	3,358
Total current assets	138,108	108,842
Property, plant and equipment, net	65,515	69,241
Amounts due from affiliates	217,254	218,957
Goodwill	81,359	81,310
Customer relationships, net	29,259	33,620
Other intangible assets, net	7,373	7,475
Investments in consolidated subsidiaries	10,780	18,549
Deferred income taxes	21	0
Other assets	7,701	6,225
Total assets	557,370	544,219
LIABILITIES AND SHAREHOLDERS’ (DEFICIT) EQUITY
Accounts payable	57,429	34,921
Accrued expenses and other current liabilities	14,768	17,582
Accrued interest payable	9,006	9,017
Current portion of long-term debt	0
Deferred income taxes	0	0
Total current liabilities	81,203	61,520
Long-term debt	539,869	516,674
Amounts due to affiliates	9,811	15,844
Deferred income taxes	12,239	8,621
Other liabilities	23,663	22,876
Total liabilities	666,785	625,535
Shareholders’ (deficit) equity:
Common stock	0	0
Additional paid-in capital	660,532	658,970
Accumulated loss	(780,575)	(751,091)
Accumulated other comprehensive income	10,628	10,805
Total shareholders’ (deficit) equity	(109,415)	(81,316)
Total liabilities and shareholders’ (deficit) equity	557,370	544,219
Non-Guarantor
ASSETS
Cash and cash equivalents	4,861	8,450	11,744	13,365
Accounts receivable, less allowance for doubtful accounts	47,141	34,133
Inventories, net	28,302	26,308
Income taxes receivable	890	1,139
Deferred income taxes	111	114
Other current assets	2,021	1,431
Total current assets	83,326	71,575
Property, plant and equipment, net	65,316	71,967
Amounts due from affiliates	19,134	30,651
Goodwill	115,767	118,065
Customer relationships, net	17,860	20,969
Other intangible assets, net	0	0
Investments in consolidated subsidiaries	0	0
Deferred income taxes	64	68
Other assets	2,025	5,065
Total assets	303,492	318,360
LIABILITIES AND SHAREHOLDERS’ (DEFICIT) EQUITY
Accounts payable	23,491	20,962
Accrued expenses and other current liabilities	12,443	13,075
Accrued interest payable	0	0
Current portion of long-term debt	3,333
Deferred income taxes	835	847
Total current liabilities	40,102	34,884
Long-term debt	0	0
Amounts due to affiliates	221,730	229,098
Deferred income taxes	8,111	11,798
Other liabilities	22,769	24,031
Total liabilities	292,712	299,811
Shareholders’ (deficit) equity:
Common stock	21	21
Additional paid-in capital	199,452	199,452
Accumulated loss	(203,299)	(195,851)
Accumulated other comprehensive income	14,606	14,927
Total shareholders’ (deficit) equity	10,780	18,549
Total liabilities and shareholders’ (deficit) equity	303,492	318,360
Eliminations
ASSETS
Cash and cash equivalents	0	0	0	0
Accounts receivable, less allowance for doubtful accounts	0	0
Inventories, net	0	0
Income taxes receivable	0	0
Deferred income taxes	0	0
Other current assets	0	0
Total current assets	0	0
Property, plant and equipment, net	0	0
Amounts due from affiliates	(236,388)	(249,608)
Goodwill	0	0
Customer relationships, net	0	0
Other intangible assets, net	0	0
Investments in consolidated subsidiaries	98,635	62,767
Deferred income taxes	0	0
Other assets	0	0
Total assets	(137,753)	(186,841)
LIABILITIES AND SHAREHOLDERS’ (DEFICIT) EQUITY
Accounts payable	0	0
Accrued expenses and other current liabilities	0	0
Accrued interest payable	0	0
Current portion of long-term debt	0
Deferred income taxes	0	0
Total current liabilities	0	0
Long-term debt	0	0
Amounts due to affiliates	(236,388)	(249,608)
Deferred income taxes	0	0
Other liabilities	0	0
Total liabilities	(236,388)	(249,608)
Shareholders’ (deficit) equity:
Common stock	(21)	(21)
Additional paid-in capital	(859,984)	(858,422)
Accumulated loss	983,874	946,942
Accumulated other comprehensive income	(25,234)	(25,732)
Total shareholders’ (deficit) equity	98,635	62,767
Total liabilities and shareholders’ (deficit) equity	$ (137,753)	$ (186,841)