Acquisitions (Details) (USD $)	3 Months Ended		1 Months Ended					1 Months Ended					1 Months Ended
	Mar. 31, 2013 Developed Technology Rights [Member]	Mar. 31, 2013 Customer Relationships [Member]	Oct. 31, 2012 Jamco [Member]	Oct. 02, 2012 Jamco [Member]	Oct. 02, 2012 Jamco [Member] Customer Relationships [Member]	Oct. 02, 2012 Jamco [Member] Technology [Member]	Oct. 02, 2012 Jamco [Member] Noncompete Agreements [Member]	Jul. 31, 2012 Palsticos Novel S.A. [Member]	Jul. 31, 2011 Palsticos Novel S.A. [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]	Oct. 31, 2012 Customer Relationships [Member] Jamco [Member]	Oct. 31, 2012 Noncompete Agreements [Member] Jamco [Member]	Oct. 31, 2012 Technology [Member] Jamco [Member]	Oct. 02, 2012 Trade Names [Member] Jamco [Member]	Jul. 09, 2012 Trade Names [Member] Palsticos Novel S.A. [Member]
Business Acquisition [Line Items]
Percentage of entity acquired				100.00%				100.00%
Purchase price of business				$ 15,100,000						$ 31,000,000
Cash acquired				88,000						630,000
Trade name acquired																1,200,000
Acquired finite-lived intangible assets					2,400,000	2,000,000	100,000
Useful lives of intangible assets acquired	10 years	6 years											6 years	2 years	10 years
Cash payment for acquisition								3,400,000
Cash acquired from acquisition			100,000					600,000
Debt assumed in acquisition				0						26,028,000
Contingent consideration										900,000
Contingency period									4 years
Indefinite-lived trade name acquired																	1,600,000
Finite-lived intangible assets acquired				$ 5,680,000						$ 5,790,000	$ 1,800,000	$ 2,400,000