Segments (Schedule of net sales, adjusted EBITDA and certain other measures by reportable segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information [Line Items]
Net sales	$ 358,540	$ 354,060	$ 1,006,225	$ 978,629
Gross profit	89,139	84,392	246,871	231,848
Depreciation & amortization	4,186	3,298	11,830	9,744
Operating segments [Member] | Geographic divisions [Member]
Segment Reporting Information [Line Items]
Net sales	343,895	338,998	965,416	938,841
Gross profit	86,258	81,844	238,645	224,964
Depreciation & amortization	3,774	2,963	10,733	8,927
Adjusted EBITDA	25,380	21,684	61,714	51,872
Operating segments [Member] | Coleman Floor [Member]
Segment Reporting Information [Line Items]
Net sales	14,645	15,062	40,809	39,788
Gross profit	2,881	2,548	8,226	6,884
Depreciation & amortization	35	30	117	84
Adjusted EBITDA	522	208	1,329	(389)
Other reconciling items [Member] | Other reconciling items [Member]
Segment Reporting Information [Line Items]
Net sales	0	0	0	0
Gross profit	0	0	0	0
Depreciation & amortization	377	305	980	733
Adjusted EBITDA	$ (9,461)	$ (8,684)	$ (28,336)	$ (25,225)