ACQUISITIONS (Details) (USD $)	12 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended	0 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013	Feb. 03, 2014	Mar. 01, 2012
Acquisitions
Goodwill acquired in HOLLY HUNT acquisition	$ 49,665,000
Goodwill	128,918,000	128,918,000		79,951,000
Studio Segment
Acquisitions
Goodwill acquired in HOLLY HUNT acquisition	49,665,000
Goodwill	55,111,000	55,111,000		5,414,000
Holly Hunt Enterprises, Inc
Acquisitions
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual			102,572,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual			6,291,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Less Current Liabilities					14,376,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment					5,995,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill					41,786,000
Business Combination, Contingent Consideration, Liability					(16,000,000)
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value					(218,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other					(604,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Less Noncontrolling Interest					45,335,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest					95,000,000
Increase (Decrease) in Finished Goods and Work in Process Inventories		(600,000)
Business Acquisition, Pro Forma Revenue	1,058,115,000			956,795,000
Business Acquisition, Pro Forma Net Income (Loss)	47,079,000			25,450,000
Holly Hunt Enterprises, Inc | Selling, general, and administrative expenses
Acquisitions
Business Combination, Acquisition Related Costs	710,000
Holly Hunt Enterprises, Inc | Other Expense | Selling, general, and administrative expenses
Acquisitions
Business Combination, Acquisition Related Costs	275,000
Holly Hunt Enterprises, Inc | Acquisition-related Costs | Selling, general, and administrative expenses
Acquisitions
Business Combination, Acquisition Related Costs	435,000
Holly Hunt Enterprises, Inc | Customer relationships
Acquisitions
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill					15,867,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life					10 years
Holly Hunt Enterprises, Inc | Non-competition agreements
Acquisitions
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill					2,440,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life					4 years
Holly Hunt Enterprises, Inc | Trade Names
Acquisitions
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill					23,479,000
Richard Schultz Design Inc
Acquisitions
Cash purchase price						6,000,000
Goodwill						3,200,000
Period over which goodwill for tax purpose will be amortized						15 years
Richard Schultz Design Inc | Tradenames
Acquisitions
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles						2,800,000
Richard Schultz Design Inc | Customer relationships
Acquisitions
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles						200,000
Richard Schultz Design Inc | Non-competition agreements
Acquisitions
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles						$ 200,000