Supplemental Guarantor Condensed Financial Information - Consolidated Balance Sheets (Details) (USD $) In Thousands, unless otherwise specified	Mar. 29, 2013	Dec. 31, 2012	Mar. 30, 2012	Dec. 30, 2011
Condensed Financial Statements, Captions [Line Items]
Subsidiary Ownership Percentage	100.00%
ASSETS
Cash and cash equivalents	$ 4,187	$ 10,024	$ 13,188	$ 14,327
Accounts receivable, less allowance for doubtful accounts	88,792	73,876
Inventories, net	104,407	89,294
Income taxes receivable	1,117	1,527
Deferred income taxes	904	907
Other current assets	7,791	4,789
Total current assets	207,198	180,417
Property, plant and equipment, net	132,279	141,208
Amounts due from affiliates	0	0
Goodwill	195,585	199,375
Customer relationships, net	50,397	54,589
Other intangible assets, net	7,327	7,475
Investments in consolidated subsidiaries	0	0
Deferred income taxes	77	68
Other assets	10,310	11,290
Total assets	603,173	594,422
LIABILITIES AND SHAREHOLDERS’ (DEFICIT) EQUITY
Accounts payable	67,499	55,883
Accrued expenses and other current liabilities	28,034	30,667
Accrued interest payable	17,907	9,017
Current portion of long-term debt	11,510	0
Deferred income taxes	823	847
Total current liabilities	125,773	96,414
Long-term debt	524,611	516,674
Amounts due to affiliates	0	0
Deferred income taxes	20,653	20,419
Other liabilities	45,577	46,907
Total liabilities	716,614	680,414
Shareholders’ (deficit) equity:
Common stock	189	189
Additional paid-in capital	722,637	721,869
Accumulated loss	(846,971)	(818,855)
Accumulated other comprehensive income	10,704	10,805
Total shareholders’ (deficit) equity	(113,441)	(85,992)
Total liabilities and shareholders’ (deficit) equity	603,173	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	(108,672)	(81,316)
Deferred income taxes	0	0
Other assets	0	0
Total assets	(108,672)	(81,316)
LIABILITIES AND SHAREHOLDERS’ (DEFICIT) EQUITY
Accounts payable	0	0
Accrued expenses and other current liabilities	16	10
Accrued interest payable	0	0
Current portion of long-term debt	0
Deferred income taxes	0	0
Total current liabilities	16	10
Long-term debt	0	0
Amounts due to affiliates	4,753	4,666
Deferred income taxes	0	0
Other liabilities	0	0
Total liabilities	4,769	4,676
Shareholders’ (deficit) equity:
Common stock	189	189
Additional paid-in capital	722,637	721,869
Accumulated loss	(846,971)	(818,855)
Accumulated other comprehensive income	10,704	10,805
Total shareholders’ (deficit) equity	(113,441)	(85,992)
Total liabilities and shareholders’ (deficit) equity	(108,672)	(81,316)
Issuer
ASSETS
Cash and cash equivalents	1,716	1,574	2,047	962
Accounts receivable, less allowance for doubtful accounts	44,682	39,743
Inventories, net	74,331	62,986
Income taxes receivable	222	388
Deferred income taxes	794	793
Other current assets	3,967	3,358
Total current assets	125,712	108,842
Property, plant and equipment, net	67,200	69,241
Amounts due from affiliates	209,113	218,957
Goodwill	81,355	81,310
Customer relationships, net	31,440	33,620
Other intangible assets, net	7,327	7,475
Investments in consolidated subsidiaries	13,485	18,549
Deferred income taxes	0	0
Other assets	8,314	6,225
Total assets	543,946	544,219
LIABILITIES AND SHAREHOLDERS’ (DEFICIT) EQUITY
Accounts payable	44,699	34,921
Accrued expenses and other current liabilities	14,725	17,582
Accrued interest payable	17,907	9,017
Current portion of long-term debt	0
Deferred income taxes	0	0
Total current liabilities	77,331	61,520
Long-term debt	524,611	516,674
Amounts due to affiliates	14,757	15,844
Deferred income taxes	12,628	8,621
Other liabilities	23,291	22,876
Total liabilities	652,618	625,535
Shareholders’ (deficit) equity:
Common stock	0	0
Additional paid-in capital	659,738	658,970
Accumulated loss	(779,114)	(751,091)
Accumulated other comprehensive income	10,704	10,805
Total shareholders’ (deficit) equity	(108,672)	(81,316)
Total liabilities and shareholders’ (deficit) equity	543,946	544,219
Non-Guarantor
ASSETS
Cash and cash equivalents	2,471	8,450	11,141	13,365
Accounts receivable, less allowance for doubtful accounts	44,110	34,133
Inventories, net	30,076	26,308
Income taxes receivable	895	1,139
Deferred income taxes	110	114
Other current assets	3,824	1,431
Total current assets	81,486	71,575
Property, plant and equipment, net	65,079	71,967
Amounts due from affiliates	23,538	30,651
Goodwill	114,230	118,065
Customer relationships, net	18,957	20,969
Other intangible assets, net	0	0
Investments in consolidated subsidiaries	0	0
Deferred income taxes	77	68
Other assets	1,996	5,065
Total assets	305,363	318,360
LIABILITIES AND SHAREHOLDERS’ (DEFICIT) EQUITY
Accounts payable	22,800	20,962
Accrued expenses and other current liabilities	13,293	13,075
Accrued interest payable	0	0
Current portion of long-term debt	11,510
Deferred income taxes	823	847
Total current liabilities	48,426	34,884
Long-term debt	0	0
Amounts due to affiliates	213,141	229,098
Deferred income taxes	8,025	11,798
Other liabilities	22,286	24,031
Total liabilities	291,878	299,811
Shareholders’ (deficit) equity:
Common stock	21	21
Additional paid-in capital	199,453	199,452
Accumulated loss	(200,742)	(195,851)
Accumulated other comprehensive income	14,753	14,927
Total shareholders’ (deficit) equity	13,485	18,549
Total liabilities and shareholders’ (deficit) equity	305,363	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	(232,651)	(249,608)
Goodwill	0	0
Customer relationships, net	0	0
Other intangible assets, net	0	0
Investments in consolidated subsidiaries	95,187	62,767
Deferred income taxes	0	0
Other assets	0	0
Total assets	(137,464)	(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	(232,651)	(249,608)
Deferred income taxes	0	0
Other liabilities	0	0
Total liabilities	(232,651)	(249,608)
Shareholders’ (deficit) equity:
Common stock	(21)	(21)
Additional paid-in capital	(859,191)	(858,422)
Accumulated loss	979,856	946,942
Accumulated other comprehensive income	(25,457)	(25,732)
Total shareholders’ (deficit) equity	95,187	62,767
Total liabilities and shareholders’ (deficit) equity	$ (137,464)	$ (186,841)