Restructuring and Impairment Charges (Details) (USD $)	12 Months Ended
	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 3,638,000	$ 333,000	$ 1,791,000
Office Furniture [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Cost, Incurred Cost	8,800,000
Restructuring and Related Cost, Expected Cost	1,000,000
Facility Exit Costs [Member] | Office Furniture [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		300,000	400,000
Severance and Facility Exit Costs [Member] | Lithia Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges			1,500,000
Severance and Facility Exit Costs [Member] | Florence Chicago Nalagarh [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3,600,000
Leasehold Improvements [Member] | Lithia Facility [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of real estate, non-cash transaction			200,000
Cost of Sales [Member] | Machinery and Equipment [Member] | Facility Exit Costs [Member] | Lithia Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Cost, Accelerated Depreciation			300,000
Cost of Sales [Member] | Machinery and Equipment [Member] | Facility Exit Costs [Member] | Florence Chicago Nalagarh [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Cost, Accelerated Depreciation	$ 5,200,000