Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Goodwill [Line Items]
Goodwill impairment	$ 2,876	$ 2,963
Goodwill	290,699	277,650	$ 279,310
Capitalized software, amortization	4,700	3,500	3,300
Amortization expense for definite-lived intangibles	7,100	7,600	$ 7,200
Trademarks and trade names
Goodwill [Line Items]
Trade names, net value	$ 38,100	$ 41,000
Office furniture reporting unit one
Goodwill [Line Items]
Discount rate utilized for each reporting unit with rates range (percent)	14.00%
Terminal growth (percent)	3.00%
Goodwill impairment	$ 2,900
Goodwill	6,300
Decrease in reporting unit due to 100 basis point increase in discount rate	2,900
Decrease in reporting unit due to 100 basis point decrease in long-term growth rate	$ 1,200
Office furniture reporting unit one | Trademarks and trade names
Goodwill [Line Items]
Terminal growth (percent)	3.00%
Intangible assets impairment	$ 2,900
Trade names, net value	$ 8,300
Royalty rate (percent)	3.00%
Decrease in indefinite-lived trade name due to 50 decrease in royalty rate	$ 1,700
Decrease in indefinite-lived trade name due to 50 point decrease in terminal growth rate	$ 100
Office furniture reporting unit one | Minimum
Goodwill [Line Items]
Near term growth (percent)	(25.00%)
Office furniture reporting unit one | Minimum | Trademarks and trade names
Goodwill [Line Items]
Near term growth (percent)	1.00%
Office furniture reporting unit one | Maximum
Goodwill [Line Items]
Near term growth (percent)	9.00%
Office furniture reporting unit one | Maximum | Trademarks and trade names
Goodwill [Line Items]
Near term growth (percent)	9.00%
Office furniture reporting unit two
Goodwill [Line Items]
Discount rate utilized for each reporting unit with rates range (percent)	14.00%
Terminal growth (percent)	3.00%
Goodwill	$ 24,500
Decrease in reporting unit due to 100 basis point increase in discount rate	4,500
Decrease in reporting unit due to 100 basis point decrease in long-term growth rate	$ 1,900
Fair value exceeds carrying value (percent)	5.00%
Office furniture reporting unit two | Minimum
Goodwill [Line Items]
Near term growth (percent)	3.00%
Office furniture reporting unit two | Maximum
Goodwill [Line Items]
Near term growth (percent)	7.00%
Office furniture reporting unit three
Goodwill [Line Items]
Discount rate utilized for each reporting unit with rates range (percent)	16.00%
Terminal growth (percent)	3.00%
Goodwill	$ 14,100
Fair value exceeds carrying value (percent)	18.00%
Decrease in fair value for every 100 basis point increase in discount rate	$ 3,200
Decrease in fair value for every 100 basis point decrease in long-term growth rate	$ 1,100
Office furniture reporting unit three | Minimum
Goodwill [Line Items]
Near term growth (percent)	4.00%
Office furniture reporting unit three | Maximum
Goodwill [Line Items]
Near term growth (percent)	20.00%