GOODWILL AND OTHER INTANGIBLE ASSETS, NET (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill and other intangible assets
Amortization expense	$ 3,100,000	$ 1,000,000	$ 1,000,000
Total Intangible assets
Gross Amount	265,515,000	223,414,000
Accumulated Amortization	(11,776,000)	(8,719,000)
Net Amount	253,739,000	214,695,000
Estimated Amortization
2015	3,251,000
2016	3,237,000
2017	3,200,000
2018	2,375,000
2019	2,142,000
Changes in the carrying amount of goodwill
Balance as of December 31, 2013	79,951,000
Goodwill acquired in HOLLY HUNT acquisition	49,665,000
Foreign currency translation adjustment	(698,000)
Balance as of December 31, 2014	128,918,000	79,951,000
Office Segment
Changes in the carrying amount of goodwill
Balance as of December 31, 2013	37,578,000
Goodwill acquired in HOLLY HUNT acquisition	0
Foreign currency translation adjustment	(730,000)
Balance as of December 31, 2014	36,848,000
Studio Segment
Changes in the carrying amount of goodwill
Balance as of December 31, 2013	5,414,000
Goodwill acquired in HOLLY HUNT acquisition	49,665,000
Foreign currency translation adjustment	32,000
Balance as of December 31, 2014	55,111,000
Coverings Segment
Changes in the carrying amount of goodwill
Balance as of December 31, 2013	36,959,000
Goodwill acquired in HOLLY HUNT acquisition	0
Foreign currency translation adjustment	0
Balance as of December 31, 2014	36,959,000
Tradenames
Indefinite-lived intangible assets:
Gross Amount	231,300,000	207,821,000
Net Amount	231,300,000	207,821,000
Various
Finite-lived intangible assets:
Gross Amount	34,215,000	15,593,000
Accumulated Amortization	(11,776,000)	(8,719,000)
Net Amount	$ 22,439,000	$ 6,874,000