SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Financial information of segments
SALES	$ 214,312	$ 221,018	$ 414,898	$ 417,679
INTERSEGMENT SALES	4,144	3,813	8,641	8,063
Operating profit	12,408	20,803	22,702	36,254
Office
Financial information of segments
SALES	148,070	153,892	285,550	292,188
INTERSEGMENT SALES	214	422	856	1,170
Operating profit	3,432	8,723	5,434	15,655
Studio
Financial information of segments
SALES	37,231	39,194	75,669	72,368
INTERSEGMENT SALES	1,498	1,236	3,020	2,418
Operating profit	3,274	6,415	7,416	10,398
Coverings
Financial information of segments
SALES	29,011	27,932	53,679	53,123
INTERSEGMENT SALES	2,432	2,155	4,765	4,475
Operating profit	$ 5,702	$ 5,665	$ 9,852	$ 10,201

The net result for the period of deducting operating expenses from operating revenues.

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- Definition

Amount of revenue from transactions with other operating segments of the same entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 131

-Paragraph 27

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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