Segments (Schedule of net sales, adjusted EBITDA and certain other measures by reportable segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]
Net sales	$ 344,586	$ 314,653	$ 624,569	$ 563,379
Gross profit	82,214	71,510	147,456	125,300
Depreciation & amortization	3,410	3,067	6,446	6,026
Total Assets	381,824		381,824		318,540
Operating segments [Member] | Geographic divisions [Member]
Segment Reporting Information [Line Items]
Net sales	331,390	302,666	599,843	541,183
Gross profit	80,002	69,085	143,120	120,618
Depreciation & amortization	3,144	2,925	5,963	5,548
Adjusted EBITDA	21,382	14,788	30,188	19,372
Total Assets	346,486		346,486
Operating segments [Member] | Coleman Floor [Member]
Segment Reporting Information [Line Items]
Net sales	13,196	11,987	24,726	22,196
Gross profit	2,212	2,425	4,336	4,682
Depreciation & amortization	29	33	53	65
Adjusted EBITDA	(182)	397	(597)	824
Total Assets	10,519		10,519
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	237	109	430	413
Adjusted EBITDA	(8,260)	(6,159)	(16,541)	(12,391)
Total Assets	$ 24,819		$ 24,819