Financial Guarantees and Condensed Consolidating Balance Sheet (Details) (USD $) In Thousands, unless otherwise specified	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Current assets:
Cash and cash equivalents	$ 97,879	$ 72,742
Accounts receivable, net	131,569	141,172
Inventories, net	94,964	103,911
Deferred income taxes	3,832	4,404
Other current assets	33,414	36,044
Total current assets	361,658	358,273
Property, plant and equipment, net	479,169	493,352
Goodwill	80,608	80,546	2,253
Intangible assets, net	75,663	83,751
Net investment in and advances to (from) subsidiaries	0	0
Deferred income taxes	945	1,939
Other noncurrent assets	24,026	42,717
Total assets	1,022,069	1,060,578
Current liabilities:
Short-term borrowings	813	5,000
Accounts payable and accrued liabilities	196,905	190,516
Income taxes payable	3,841	1,023
Deferred income taxes	479	1,691
Current portion of long-term debt	19,477	7,592
Total current liabilities	221,515	205,822
Long-term debt	579,399	587,853
Deferred income taxes	33,181	34,807
Other noncurrent liabilities	48,772	44,799
Total liabilities	882,867	873,281
Common stock	0	0
Other shareholders’ equity	139,202	187,297
Total shareholders' equity	139,202	187,297
Total liabilities and shareholders' equity	1,022,069	1,060,578
PGI (Issuer)
Current assets:
Cash and cash equivalents	486	3,135
Accounts receivable, net	0	0
Inventories, net	0	0
Deferred income taxes	0	80
Other current assets	1,821	1,173
Total current assets	2,307	4,388
Property, plant and equipment, net	27,711	9,267
Goodwill	0	0
Intangible assets, net	24,313	27,545
Net investment in and advances to (from) subsidiaries	679,818	739,121
Deferred income taxes	0	0
Other noncurrent assets	275	409
Total assets	734,424	780,730
Current liabilities:
Short-term borrowings	813	0
Accounts payable and accrued liabilities	28,511	32,524
Income taxes payable	0	0
Deferred income taxes	331	0
Current portion of long-term debt	107	107
Total current liabilities	29,762	32,631
Long-term debt	560,043	560,132
Deferred income taxes	273	670
Other noncurrent liabilities	5,144	0
Total liabilities	595,222	593,433
Common stock	0	0
Other shareholders’ equity	139,202	187,297
Total shareholders' equity	139,202	187,297
Total liabilities and shareholders' equity	734,424	780,730
Guarantors
Current assets:
Cash and cash equivalents	28,285	14,574
Accounts receivable, net	22,350	18,270
Inventories, net	23,843	34,381
Deferred income taxes	613	0
Other current assets	7,710	8,783
Total current assets	82,801	76,008
Property, plant and equipment, net	99,660	111,469
Goodwill	20,718	20,718
Intangible assets, net	42,422	45,247
Net investment in and advances to (from) subsidiaries	723,861	754,930
Deferred income taxes	0	0
Other noncurrent assets	5,787	5,424
Total assets	975,249	1,013,796
Current liabilities:
Short-term borrowings	0	0
Accounts payable and accrued liabilities	33,344	26,897
Income taxes payable	89	37
Deferred income taxes	0	1,016
Current portion of long-term debt	0	0
Total current liabilities	33,433	27,950
Long-term debt	0	0
Deferred income taxes	9,149	7,624
Other noncurrent liabilities	15,540	17,230
Total liabilities	58,122	52,804
Common stock	0	0
Other shareholders’ equity	917,127	960,992
Total shareholders' equity	917,127	960,992
Total liabilities and shareholders' equity	975,249	1,013,796
Non-Guarantors
Current assets:
Cash and cash equivalents	69,108	55,033
Accounts receivable, net	109,219	122,902
Inventories, net	71,121	69,530
Deferred income taxes	3,832	3,866
Other current assets	23,883	26,088
Total current assets	277,163	277,419
Property, plant and equipment, net	351,798	372,616
Goodwill	59,890	59,828
Intangible assets, net	8,928	10,959
Net investment in and advances to (from) subsidiaries	(188,670)	(238,038)
Deferred income taxes	945	1,939
Other noncurrent assets	17,964	36,884
Total assets	528,018	521,607
Current liabilities:
Short-term borrowings	0	5,000
Accounts payable and accrued liabilities	135,050	130,940
Income taxes payable	3,752	986
Deferred income taxes	14	1,691
Current portion of long-term debt	19,370	7,485
Total current liabilities	158,186	146,102
Long-term debt	19,356	27,721
Deferred income taxes	24,506	25,039
Other noncurrent liabilities	28,088	27,569
Total liabilities	230,136	226,431
Common stock	36,083	36,083
Other shareholders’ equity	261,799	259,093
Total shareholders' equity	297,882	295,176
Total liabilities and shareholders' equity	528,018	521,607
Eliminations
Current assets:
Cash and cash equivalents	0	0
Accounts receivable, net	0	0
Inventories, net	0	0
Deferred income taxes	(613)	458
Other current assets	0	0
Total current assets	(613)	458
Property, plant and equipment, net	0	0
Goodwill	0	0
Intangible assets, net	0	0
Net investment in and advances to (from) subsidiaries	(1,215,009)	(1,256,013)
Deferred income taxes	0	0
Other noncurrent assets	0	0
Total assets	(1,215,622)	(1,255,555)
Current liabilities:
Short-term borrowings	0	0
Accounts payable and accrued liabilities	0	155
Income taxes payable	0	0
Deferred income taxes	134	(1,016)
Current portion of long-term debt	0	0
Total current liabilities	134	(861)
Long-term debt	0	0
Deferred income taxes	(747)	1,474
Other noncurrent liabilities	0	0
Total liabilities	(613)	613
Common stock	(36,083)	(36,083)
Other shareholders’ equity	(1,178,926)	(1,220,085)
Total shareholders' equity	(1,215,009)	(1,256,168)
Total liabilities and shareholders' equity	$ (1,215,622)	$ (1,255,555)