Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Apr. 03, 2015 segments	Mar. 28, 2014
Segment Reporting Information [Line Items]
Third party, net sales	$ 185,599us-gaap_SalesRevenueGoodsNet	$ 169,904us-gaap_SalesRevenueGoodsNet
(Loss) income from operations	(3,287)us-gaap_OperatingIncomeLoss	(5,010)us-gaap_OperatingIncomeLoss
Depreciation and amortization	7,499us-gaap_DepreciationAndAmortization	8,202us-gaap_DepreciationAndAmortization
Capital expenditures	2,109	1,488
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments [Abstract]
Number of reportable segments	4us-gaap_NumberOfReportableSegments
U.S. Residential Products
Segment Reporting Information [Line Items]
Third party, net sales	57,044	46,122
(Loss) income from operations	1,725	(1,634)
Depreciation and amortization	2,648	2,733
Capital expenditures	461	339
U.S. Commercial Products
Segment Reporting Information [Line Items]
Third party, net sales	65,545	57,484
(Loss) income from operations	(2,793)	(4,680)
Depreciation and amortization	2,456	2,542
Capital expenditures	201	555
European Roll Coated Aluminum
Segment Reporting Information [Line Items]
Third party, net sales	47,110	50,137
(Loss) income from operations	1,623	3,929
Depreciation and amortization	1,822	2,353
Capital expenditures	284	340
European Engineered Products
Segment Reporting Information [Line Items]
Third party, net sales	16,303	16,577
(Loss) income from operations	301	(346)
Depreciation and amortization	380	417
Capital expenditures	249	163
Other Non-Allocated
Segment Reporting Information [Line Items]
Third party, net sales	0	0
(Loss) income from operations	(4,143)	(2,279)
Depreciation and amortization	193	157
Capital expenditures	914	91
Eliminations
Segment Reporting Information [Line Items]
Third party, net sales	(403)	(416)
(Loss) income from operations	0	0
Depreciation and amortization	0	0
Capital expenditures	0	0
Operating Segments
Segment Reporting Information [Line Items]
Third party, net sales	185,599	169,904
Operating Segments \| U.S. Residential Products
Segment Reporting Information [Line Items]
Third party, net sales	56,853	45,943
Operating Segments \| U.S. Commercial Products
Segment Reporting Information [Line Items]
Third party, net sales	65,504	57,456
Operating Segments \| European Roll Coated Aluminum
Segment Reporting Information [Line Items]
Third party, net sales	46,939	49,928
Operating Segments \| European Engineered Products
Segment Reporting Information [Line Items]
Third party, net sales	16,303	16,577
Operating Segments \| Other Non-Allocated
Segment Reporting Information [Line Items]
Third party, net sales	0	0
Operating Segments \| Eliminations
Segment Reporting Information [Line Items]
Third party, net sales	0	0
Segment Reconciling Items
Segment Reporting Information [Line Items]
Third party, net sales	0	0
Segment Reconciling Items \| U.S. Residential Products
Segment Reporting Information [Line Items]
Third party, net sales	191	179
Segment Reconciling Items \| U.S. Commercial Products
Segment Reporting Information [Line Items]
Third party, net sales	41	28
Segment Reconciling Items \| European Roll Coated Aluminum
Segment Reporting Information [Line Items]
Third party, net sales	171	209
Segment Reconciling Items \| European Engineered Products
Segment Reporting Information [Line Items]
Third party, net sales	0	0
Segment Reconciling Items \| Other Non-Allocated
Segment Reporting Information [Line Items]
Third party, net sales	0	0
Segment Reconciling Items \| Eliminations
Segment Reporting Information [Line Items]
Third party, net sales	$ (403)	$ (416)

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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