Acquisitions (Details) (USD $)		9 Months Ended
	Jul. 09, 2012	Sep. 30, 2012 Developed Technology Rights [Member]	Sep. 30, 2012 Customer Relationships [Member]	Jul. 09, 2012 Palsticos Novel S.A. [Member]	Jul. 09, 2012 Palsticos Novel S.A. [Member] Developed Technology Rights [Member]	Jul. 09, 2012 Palsticos Novel S.A. [Member] Customer Relationships [Member]	Jul. 09, 2012 Palsticos Novel S.A. [Member] Trade Names [Member]	Oct. 01, 2012 Jamco [Domain]	Dec. 31, 2011 Material Improvements L.P. [Member]	Dec. 31, 2011 Material Improvements L.P. [Member] Technology [Member]	Dec. 31, 2011 Material Improvements L.P. [Member] Trade Names [Member]
Business Acquisition [Line Items]
Business acquisition, total purchase price				$ 31,000,000				$ 15,000,000	$ 5,700,000
Business acquisition, cash paid				3,400,000					1,100,000
Business Acquisition, Purchase Price Allocation, Current Assets, Cash and Cash Equivalents	630,000			600,000
Business acquisition, contingent consideration				900,000					4,600,000
Business Acquisition, Purchase Price Allocation, Noncurrent Liabilities, Long-term Debt	(26,028,000)			26,000,000
Business acquisition, property, plant, and equipment	13,636,000								300,000
Business acquisition, amortizable intangible assets	5,790,000				1,800,000	2,400,000	1,600,000			1,300,000	200,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		10 years	6 years
Business acquisition, goodwill	8,805,000								3,900,000
Business Combination, Acquired Receivables, Estimated Uncollectible	5,467,000
Business Acquisition, Purchase Price Allocation, Current Assets, Inventory	5,993,000
Deferred Taxes, Business Combination, Valuation Allowance, Available to Reduce Intangible Assets	435,000
Business Acquisition, Purchase Price Allocation, Current Assets, Prepaid Expense and Other Assets	1,451,000
Business Acquisition, Purchase Price Allocation, Other Noncurrent Assets	719,000
Business Acquisition, Purchase Price Allocation, Assets Acquired	33,491,000
Business Acquisition, Purchase Price Allocation, Current Liabilities, Accounts Payable	(3,134,000)
Business Acquisition, Purchase Price Allocation, Current Liabilities, Other Liabilities	(3,608,000)
Business Acquisition, Purchase Price Allocation, Other Noncurrent Liabilities	(2,293,000)
Business Acquisition, Purchase Price Allocation, Deferred Tax Liabilities, Noncurrent	(3,804,000)
Business Acquisition, Purchase Price Allocation, Liabilities Assumed	(38,866,000)
Business Combination, Consideration Transferred	$ 3,430,000