Segment Information - Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 28, 2014 segments	Mar. 29, 2013
Segment Reporting Information [Line Items]
Net sales	$ 169,904	$ 172,545
Loss from operations	(5,010)	(7,432)
Depreciation and amortization	8,202	8,593
Capital expenditures	(1,488)	(2,226)
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments [Abstract]
Number of reportable segments	4
U.S. Residential Products
Segment Reporting Information [Line Items]
Net sales	49,579	52,253
Loss from operations	(1,317)	(223)
Depreciation and amortization	2,733	2,925
Capital expenditures	(339)	(433)
U.S. Commercial Products
Segment Reporting Information [Line Items]
Net sales	54,027	54,714
Loss from operations	(4,997)	(4,418)
Depreciation and amortization	2,542	2,618
Capital expenditures	(555)	(438)
European Roll Coated Aluminum
Segment Reporting Information [Line Items]
Net sales	50,137	48,283
Loss from operations	3,929	2,487
Depreciation and amortization	2,353	2,334
Capital expenditures	(340)	(741)
European Engineered Products
Segment Reporting Information [Line Items]
Net sales	16,577	17,636
Loss from operations	(346)	(2,628)
Depreciation and amortization	417	584
Capital expenditures	(163)	(169)
Other Non-Allocated
Segment Reporting Information [Line Items]
Net sales	0	0
Loss from operations	(2,279)	(2,650)
Depreciation and amortization	157	132
Capital expenditures	(91)	(445)
Eliminations
Segment Reporting Information [Line Items]
Net sales	(416)	(341)
Loss from operations	0	0
Depreciation and amortization	0	0
Capital expenditures	0	0
Operating Segments
Segment Reporting Information [Line Items]
Net sales	169,904	172,545
Operating Segments | U.S. Residential Products
Segment Reporting Information [Line Items]
Net sales	49,400	52,118
Operating Segments | U.S. Commercial Products
Segment Reporting Information [Line Items]
Net sales	53,999	54,570
Operating Segments | European Roll Coated Aluminum
Segment Reporting Information [Line Items]
Net sales	49,928	48,221
Operating Segments | European Engineered Products
Segment Reporting Information [Line Items]
Net sales	16,577	17,636
Operating Segments | Other Non-Allocated
Segment Reporting Information [Line Items]
Net sales	0	0
Operating Segments | Eliminations
Segment Reporting Information [Line Items]
Net sales	0	0
Segment Reconciling Items
Segment Reporting Information [Line Items]
Net sales	0	0
Segment Reconciling Items | U.S. Residential Products
Segment Reporting Information [Line Items]
Net sales	179	135
Segment Reconciling Items | U.S. Commercial Products
Segment Reporting Information [Line Items]
Net sales	28	144
Segment Reconciling Items | European Roll Coated Aluminum
Segment Reporting Information [Line Items]
Net sales	209	62
Segment Reconciling Items | European Engineered Products
Segment Reporting Information [Line Items]
Net sales	0	0
Segment Reconciling Items | Other Non-Allocated
Segment Reporting Information [Line Items]
Net sales	0	0
Segment Reconciling Items | Eliminations
Segment Reporting Information [Line Items]
Net sales	$ (416)	$ (341)