Other Operating Charges (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 26, 2014	Sep. 27, 2013	Sep. 26, 2014	Sep. 27, 2013
Other Operating Costs [Line Items]
Unusual or infrequent item operating	$ 1,051,000	$ 1,455,000	$ 4,357,000	$ 5,355,000
Other operating charges
Other Operating Costs [Line Items]
Unusual or infrequent item operating	1,051,000	1,455,000	4,357,000	5,355,000
Other severance and nonrecurring costs	500,000	500,000		1,300,000
Other operating charges | North America
Other Operating Costs [Line Items]
Other severance and nonrecurring costs	1,000,000
Other operating charges | United States
Other Operating Costs [Line Items]
Other severance and nonrecurring costs			1,200,000
U.S. Residential Products | Other operating charges
Other Operating Costs [Line Items]
Unusual or infrequent item operating	83,000	57,000	591,000	214,000
U.S. Residential Products | Other operating charges | United States
Other Operating Costs [Line Items]
Other severance and nonrecurring costs			400,000
U.S. Commercial Products | Other operating charges
Other Operating Costs [Line Items]
Unusual or infrequent item operating	177,000	69,000	646,000	364,000
U.S. Commercial Products | Other operating charges | United States
Other Operating Costs [Line Items]
Other severance and nonrecurring costs			400,000
European Roll Coated Aluminum | Other operating charges
Other Operating Costs [Line Items]
Unusual or infrequent item operating	26,000	305,000	26,000	495,000
European Engineered Products | Other operating charges
Other Operating Costs [Line Items]
Unusual or infrequent item operating	148,000	995,000	1,218,000	4,039,000
Restructuring and related cost, incurred cost			1,300,000	2,000,000
European Engineered Products | Other operating charges | Fair Value, Inputs, Level 1
Other Operating Costs [Line Items]
Asset impairment charges			1,600,000
European Engineered Products | Other operating charges | France
Other Operating Costs [Line Items]
Other severance and nonrecurring costs		200,000	800,000	500,000
European Engineered Products | Other operating charges | U.K.
Other Operating Costs [Line Items]
Other severance and nonrecurring costs		800,000	500,000
European Engineered Products | Other operating charges | U.K. | Fair Value, Inputs, Level 1
Other Operating Costs [Line Items]
Asset impairment charges				1,600,000
Other Non-Allocated | Other operating charges
Other Operating Costs [Line Items]
Unusual or infrequent item operating	617,000	29,000	1,876,000	243,000
Other severance and nonrecurring costs			1,900,000
Professional and contract services expense	600,000
Other Non-Allocated | Other operating charges | United States
Other Operating Costs [Line Items]
Other severance and nonrecurring costs			$ 200,000