Supplemental Guarantor Condensed Financial Information (Details) (USD $) In Thousands, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Current assets:
Cash and cash equivalents	$ 43,698	$ 40,852	$ 29,505	$ 24,024
Accounts receivable, net	200,941	228,201
Inventories, net	126,931	141,716
Prepaid expenses	7,072	6,162
Deferred taxes	17,330	20,777
Other current assets	7,003	13,183
Total current assets	402,975	450,891
Property, plant and equipment, net	69,285	55,549
Deferred financing fees, net	7,305	9,964
Intangible assets, net	269,394	265,898
Goodwill	207,739	208,697	208,697
Other assets	1,245	1,235
Total assets by location	957,943	992,234
Current liabilities:
Revolving credit facility	23,000	35,000
Current portion of capital lease obligations	23	28
Accounts payable	76,373	78,344
Accrued expenses	68,978	63,848
Total current liabilities	168,374	177,220
Long-term debt, less current portion	347,834	347,224
Capital lease obligations, less current portion		24
Deferred taxes	57,652	62,626
Other noncurrent liabilities	27,580	21,641
Long-term intercompany payables
Total liabilities	601,440	608,735
Total stockholder's equity	356,503	383,499	389,625	377,638
Total liabilities and stockholder's equity	957,943	992,234
Issuer
Current assets:
Cash and cash equivalents	1,556	1,664	2,697	1,981
Prepaid expenses	3,027	2,955
Total current assets	4,583	4,619
Property, plant and equipment, net	39,724	25,006
Deferred financing fees, net	7,305	9,964
Investments and intercompany receivables	354,901	362,081
Goodwill	16,195	16,195
Total assets by location	422,708	417,865
Current liabilities:
Revolving credit facility	23,000	35,000
Accrued expenses	13,143	8,350
Total current liabilities	36,143	43,350
Long-term debt, less current portion	347,834	347,224
Long-term intercompany payables
Total liabilities	383,977	390,574
Total stockholder's equity	38,731	27,291
Total liabilities and stockholder's equity	422,708	417,865
Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	8,770	9,244	5,813	7,049
Accounts receivable, net	188,157	204,654
Inventories, net	116,213	125,049
Prepaid expenses	2,959	2,307
Deferred taxes	17,330	20,777
Other current assets	4,993	10,313
Total current assets	338,422	372,344
Property, plant and equipment, net	27,408	28,887
Investments and intercompany receivables	76,864	82,642
Intangible assets, net	264,006	260,580
Goodwill	186,353	187,311
Other assets	1,111	1,100
Total assets by location	894,164	932,864
Current liabilities:
Current portion of capital lease obligations	23	28
Accounts payable	74,047	74,468
Accrued expenses	52,646	50,591
Total current liabilities	126,716	125,087
Capital lease obligations, less current portion		24
Deferred taxes	57,652	62,626
Other noncurrent liabilities	20,147	14,208
Long-term intercompany payables	398,126	412,844
Total liabilities	602,641	614,789
Total stockholder's equity	291,523	318,075
Total liabilities and stockholder's equity	894,164	932,864
Non-Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	33,372	29,944	20,995	14,994
Accounts receivable, net	12,784	23,547
Inventories, net	10,718	16,667
Prepaid expenses	1,086	900
Other current assets	2,010	2,870
Total current assets	59,970	73,928
Property, plant and equipment, net	2,153	1,656
Investments and intercompany receivables	84,359	72,307
Intangible assets, net	5,388	5,318
Goodwill	5,191	5,191
Other assets	134	135
Total assets by location	157,195	158,535
Current liabilities:
Accounts payable	2,326	3,876
Accrued expenses	3,189	4,907
Total current liabilities	5,515	8,783
Other noncurrent liabilities	7,433	7,433
Long-term intercompany payables	79,510	64,792
Total liabilities	92,458	81,008
Total stockholder's equity	64,737	77,527
Total liabilities and stockholder's equity	157,195	158,535
Eliminations
Current assets:
Investments and intercompany receivables	(516,124)	(517,030)
Total assets by location	(516,124)	(517,030)
Current liabilities:
Long-term intercompany payables	(477,636)	(477,636)
Total liabilities	(477,636)	(477,636)
Total stockholder's equity	(38,488)	(39,394)
Total liabilities and stockholder's equity	$ (516,124)	$ (517,030)