Financial Guarantees and Condensed Consolidating Financial Statements (Details) (USD $) In Thousands, unless otherwise specified	Sep. 29, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 95,099	$ 72,742
Accounts receivable, net	131,331	141,172
Inventories, net	98,809	103,911
Deferred income taxes	4,305	4,404
Other current assets	38,314	36,044
Total current assets	367,858	358,273
Property, plant and equipment, net	482,002	493,352
Goodwill	80,389	80,546
Intangible assets, net	77,405	83,751
Net investment in and advances (from) to subsidiaries	0	0
Deferred income taxes	1,944	1,939
Other noncurrent assets	40,972	42,717
Total assets	1,050,570	1,060,578
Current liabilities:
Short-term borrowings	3,071	5,000
Accounts payable and accrued liabilities	188,335	190,516
Income taxes payable	2,923	1,023
Deferred income taxes	1,691	1,691
Current portion of long-term debt	9,525	7,592
Total current liabilities	205,545	205,822
Long-term debt	593,725	587,853
Deferred income taxes	34,795	34,807
Other noncurrent liabilities	40,563	44,799
Total liabilities	874,628	873,281
Common stock	0	0
Other shareholder's Equity	175,942	187,297
Total equity	175,942	187,297
Total liabilities and equity	1,050,570	1,060,578
PGI (Issuer) [Member]
Current assets:
Cash and cash equivalents	7,560	3,135
Accounts receivable, net	0	0
Inventories, net	0	0
Deferred income taxes	0	80
Other current assets	2,494	1,173
Total current assets	10,054	4,388
Property, plant and equipment, net	24,370	9,267
Goodwill	0	0
Intangible assets, net	24,878	27,545
Net investment in and advances (from) to subsidiaries	694,230	739,121
Deferred income taxes	0	0
Other noncurrent assets	197	409
Total assets	753,729	780,730
Current liabilities:
Short-term borrowings	71	0
Accounts payable and accrued liabilities	16,953	32,524
Income taxes payable	0	0
Deferred income taxes	19	0
Current portion of long-term debt	107	107
Total current liabilities	17,150	32,631
Long-term debt	560,066	560,132
Deferred income taxes	571	670
Other noncurrent liabilities	0	0
Total liabilities	577,787	593,433
Common stock		0
Other shareholder's Equity	175,942	187,297
Total equity	175,942	187,297
Total liabilities and equity	753,729	780,730
Guarantors [Member]
Current assets:
Cash and cash equivalents	23,523	14,574
Accounts receivable, net	22,783	18,270
Inventories, net	26,602	34,381
Deferred income taxes	0	0
Other current assets	9,552	8,783
Total current assets	82,460	76,008
Property, plant and equipment, net	101,461	111,469
Goodwill	20,718	20,718
Intangible assets, net	43,127	45,247
Net investment in and advances (from) to subsidiaries	783,727	754,930
Deferred income taxes	0	0
Other noncurrent assets	5,803	5,424
Total assets	1,037,296	1,013,796
Current liabilities:
Short-term borrowings	0	0
Accounts payable and accrued liabilities	38,130	26,897
Income taxes payable	0	37
Deferred income taxes	1,016	1,016
Current portion of long-term debt	0	0
Total current liabilities	39,146	27,950
Long-term debt	0	0
Deferred income taxes	7,623	7,624
Other noncurrent liabilities	14,433	17,230
Total liabilities	61,202	52,804
Common stock		0
Other shareholder's Equity	976,094	960,992
Total equity	976,094	960,992
Total liabilities and equity	1,037,296	1,013,796
Non-Guarantors [Member]
Current assets:
Cash and cash equivalents	64,016	55,033
Accounts receivable, net	108,548	122,902
Inventories, net	72,207	69,530
Deferred income taxes	3,866	3,866
Other current assets	26,268	26,088
Total current assets	274,905	277,419
Property, plant and equipment, net	356,171	372,616
Goodwill	59,671	59,828
Intangible assets, net	9,400	10,959
Net investment in and advances (from) to subsidiaries	(195,397)	(238,038)
Deferred income taxes	1,944	1,939
Other noncurrent assets	34,972	36,884
Total assets	541,666	521,607
Current liabilities:
Short-term borrowings	3,000	5,000
Accounts payable and accrued liabilities	133,252	130,940
Income taxes payable	2,923	986
Deferred income taxes	1,691	1,691
Current portion of long-term debt	9,418	7,485
Total current liabilities	150,284	146,102
Long-term debt	33,659	27,721
Deferred income taxes	25,127	25,039
Other noncurrent liabilities	26,130	27,569
Total liabilities	235,200	226,431
Common stock	36,083	36,083
Other shareholder's Equity	270,383	259,093
Total equity	306,466	295,176
Total liabilities and equity	541,666	521,607
Eliminations [Member]
Current assets:
Cash and cash equivalents	0	0
Accounts receivable, net	0	0
Inventories, net	0	0
Deferred income taxes	439	458
Other current assets	0	0
Total current assets	439	458
Property, plant and equipment, net	0	0
Goodwill	0	0
Intangible assets, net	0	0
Net investment in and advances (from) to subsidiaries	(1,282,560)	(1,256,013)
Deferred income taxes	0	0
Other noncurrent assets	0	0
Total assets	(1,282,121)	(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	(1,035)	(1,016)
Current portion of long-term debt	0	0
Total current liabilities	(1,035)	(861)
Long-term debt	0	0
Deferred income taxes	1,474	1,474
Other noncurrent liabilities	0	0
Total liabilities	439	613
Common stock	(36,083)	(36,083)
Other shareholder's Equity	(1,246,477)	(1,220,085)
Total equity	(1,282,560)	(1,256,168)
Total liabilities and equity	$ (1,282,121)	$ (1,255,555)