Financial Guarantees and Condensed Consolidating Balance Sheet (Details) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2013	Dec. 29, 2012	Sep. 29, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 74,678	$ 97,879	$ 95,099	$ 72,742
Accounts receivable, net	143,944	131,569
Inventories, net	102,430	94,964
Deferred income taxes	3,841	3,832
Other current assets	39,365	33,414
Total current assets	364,258	361,658
Property, plant and equipment, net	470,395	479,169
Goodwill	80,877	80,608
Intangible assets, net	76,700	75,663
Net investment in and advances to (from) subsidiaries	0	0
Deferred income taxes	1,650	945
Other noncurrent assets	26,802	24,026
Total assets	1,020,682	1,022,069
Current liabilities:
Short-term borrowings	216	813
Accounts payable and accrued liabilities	206,222	196,905
Income taxes payable	1,587	3,841
Deferred income taxes	139	479
Current portion of long-term debt	19,683	19,477
Total current liabilities	227,847	221,515
Long-term debt	592,489	579,399
Deferred income taxes	33,254	33,181
Other noncurrent liabilities	39,967	48,772
Total liabilities	893,557	882,867
Common stock	0	0
Other shareholders’ equity	127,125	139,202
Total shareholders' equity	127,125	139,202
Total liabilities and shareholders' equity	1,020,682	1,022,069
PGI (Issuer)
Current assets:
Cash and cash equivalents	1,535	486	7,560	3,135
Accounts receivable, net	0	0
Inventories, net	(181)	0
Deferred income taxes	0	0
Other current assets	5,773	1,821
Total current assets	7,127	2,307
Property, plant and equipment, net	1,767	27,711
Goodwill	0	0
Intangible assets, net	21,922	24,313
Net investment in and advances to (from) subsidiaries	685,438	679,818
Deferred income taxes	0	0
Other noncurrent assets	300	275
Total assets	716,554	734,424
Current liabilities:
Short-term borrowings	216	813
Accounts payable and accrued liabilities	26,455	28,511
Income taxes payable	0	0
Deferred income taxes	(14)	331
Current portion of long-term debt	143	107
Total current liabilities	26,800	29,762
Long-term debt	560,152	560,043
Deferred income taxes	601	273
Other noncurrent liabilities	1,876	5,144
Total liabilities	589,429	595,222
Common stock	0	0
Other shareholders’ equity	127,125	139,202
Total shareholders' equity	127,125	139,202
Total liabilities and shareholders' equity	716,554	734,424
Guarantors
Current assets:
Cash and cash equivalents	11,975	28,285	23,523	14,574
Accounts receivable, net	23,482	22,350
Inventories, net	23,245	23,843
Deferred income taxes	613	613
Other current assets	8,386	7,710
Total current assets	67,701	82,801
Property, plant and equipment, net	92,529	99,660
Goodwill	20,718	20,718
Intangible assets, net	40,302	42,422
Net investment in and advances to (from) subsidiaries	797,496	723,861
Deferred income taxes	0	0
Other noncurrent assets	5,613	5,787
Total assets	1,024,359	975,249
Current liabilities:
Short-term borrowings	0	0
Accounts payable and accrued liabilities	38,675	33,344
Income taxes payable	0	89
Deferred income taxes	0	0
Current portion of long-term debt	0	0
Total current liabilities	38,675	33,433
Long-term debt	0	0
Deferred income taxes	9,045	9,149
Other noncurrent liabilities	11,557	15,540
Total liabilities	59,277	58,122
Common stock	0	0
Other shareholders’ equity	965,082	917,127
Total shareholders' equity	965,082	917,127
Total liabilities and shareholders' equity	1,024,359	975,249
Non-Guarantors
Current assets:
Cash and cash equivalents	61,168	69,108	64,016	55,033
Accounts receivable, net	120,462	109,219
Inventories, net	79,366	71,121
Deferred income taxes	3,841	3,832
Other current assets	25,206	23,883
Total current assets	290,043	277,163
Property, plant and equipment, net	376,099	351,798
Goodwill	60,159	59,890
Intangible assets, net	14,476	8,928
Net investment in and advances to (from) subsidiaries	(234,657)	(188,670)
Deferred income taxes	1,650	945
Other noncurrent assets	20,889	17,964
Total assets	528,659	528,018
Current liabilities:
Short-term borrowings	0	0
Accounts payable and accrued liabilities	141,092	135,050
Income taxes payable	1,587	3,752
Deferred income taxes	19	14
Current portion of long-term debt	19,540	19,370
Total current liabilities	162,238	158,186
Long-term debt	32,337	19,356
Deferred income taxes	24,355	24,506
Other noncurrent liabilities	26,534	28,088
Total liabilities	245,464	230,136
Common stock	16,966	36,083
Other shareholders’ equity	266,229	261,799
Total shareholders' equity	283,195	297,882
Total liabilities and shareholders' equity	528,659	528,018
Eliminations
Current assets:
Cash and cash equivalents	0	0	0	0
Accounts receivable, net	0	0
Inventories, net	0	0
Deferred income taxes	(613)	(613)
Other current assets	0	0
Total current assets	(613)	(613)
Property, plant and equipment, net	0	0
Goodwill	0	0
Intangible assets, net	0	0
Net investment in and advances to (from) subsidiaries	(1,248,277)	(1,215,009)
Deferred income taxes	0	0
Other noncurrent assets	0	0
Total assets	(1,248,890)	(1,215,622)
Current liabilities:
Short-term borrowings	0	0
Accounts payable and accrued liabilities	0	0
Income taxes payable	0	0
Deferred income taxes	134	134
Current portion of long-term debt	0	0
Total current liabilities	134	134
Long-term debt	0	0
Deferred income taxes	(747)	(747)
Other noncurrent liabilities	0	0
Total liabilities	(613)	(613)
Common stock	(16,966)	(36,083)
Other shareholders’ equity	(1,231,311)	(1,178,926)
Total shareholders' equity	(1,248,277)	(1,215,009)
Total liabilities and shareholders' equity	$ (1,248,890)	$ (1,215,622)