SEGMENT AND GEOGRAPHIC REGION INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Financial information of segments
NET SALES	$ 230,872	$ 216,898	$ 214,312	$ 200,586	$ 250,026	$ 219,794	$ 221,018	$ 196,662	$ 862,668		$ 887,499		$ 922,200
INTERSEGMENT SALES									18,014	[1]	16,617	[1]	17,881	[1]
DEPRECIATION AND AMORTIZATION									16,361		16,547		17,738
OPERATING PROFIT									41,060		87,901		97,071
Restructuring charges	5,700								5,700				800		7,600
Intangible asset impairment charge	8,900								8,900		0		0
Curtailment benefit									0		0		5,445
CAPITAL EXPENDITURES, NET									29,064		16,545		15,175
Reportable segments
Financial information of segments
OPERATING PROFIT									55,656		87,901		92,322
Office
Financial information of segments
NET SALES									599,131		633,321		664,132
INTERSEGMENT SALES									1,698	[1]	1,727	[1]	2,148	[1]
DEPRECIATION AND AMORTIZATION									13,116		13,409		14,259
OPERATING PROFIT									16,110		48,639		46,614
Restructuring charges	2,700								2,721		0		696
CAPITAL EXPENDITURES, NET									25,300		14,251		14,142
Studio
Financial information of segments
NET SALES									154,499		147,550		152,724
INTERSEGMENT SALES									6,594	[1]	5,299	[1]	5,953	[1]
DEPRECIATION AND AMORTIZATION									2,085		2,055		2,124
OPERATING PROFIT									18,550		21,786		23,022
Restructuring charges	3,000								2,975		0		0
CAPITAL EXPENDITURES, NET									3,063		1,871		1,009
Coverings
Financial information of segments
NET SALES									109,038		106,628		105,344
INTERSEGMENT SALES									9,722	[1]	9,591	[1]	9,780	[1]
DEPRECIATION AND AMORTIZATION									1,160		1,083		1,355
OPERATING PROFIT									20,996		17,476		22,686
Intangible asset impairment charge									8,900		0		0
CAPITAL EXPENDITURES, NET									$ 701		$ 423		$ 24

[1] Intersegment sales are presented on a cost plus basis which takes into consideration the effect of transfer prices between legal entities.