Goodwill and Intangible Assets - Goodwill and Intangible Assets (Detail) (USD $)					1 Months Ended	12 Months Ended		9 Months Ended			12 Months Ended	9 Months Ended				9 Months Ended				9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Trademarks [Member]	Dec. 31, 2012 Trademarks [Member]	Feb. 27, 2012 Customer relationships [Member]	Dec. 31, 2012 Customer relationships [Member]	Sep. 30, 2013 Customer relationships [Member]	Sep. 30, 2013 Customer relationships [Member] Minimum [Member]	Sep. 30, 2013 Customer relationships [Member] Maximum [Member]	Sep. 30, 2013 Patents [Member]	Dec. 31, 2012 Patents [Member]	Sep. 30, 2013 Patents [Member] Minimum [Member]	Sep. 30, 2013 Patents [Member] Maximum [Member]	Sep. 30, 2013 Developed technology [Member]	Dec. 31, 2012 Developed technology [Member]	Sep. 30, 2013 Developed technology [Member] Minimum [Member]	Sep. 30, 2013 Developed technology [Member] Maximum [Member]	Sep. 30, 2013 Licensing fees [Member]	Dec. 31, 2012 Licensing fees [Member]	Sep. 30, 2013 Licensing fees [Member] Minimum [Member]	Sep. 30, 2013 Licensing fees [Member] Maximum [Member]
Other Intangibles [Line Items]
Finite lived intangible assets, Gross Value	$ 7,309,000	$ 7,303,000				$ 3,868,000	$ 3,868,000			$ 1,291,000	$ 1,285,000			$ 1,700,000	$ 1,700,000			$ 450,000	$ 450,000
Indefinite lived intangible assets, Gross Value			1,672,000	1,672,000
Other intangible assets, Gross	8,981,000	8,975,000
Finite lived intangible assets, Accumulated Amortization	6,639,000	6,305,000				3,078,000	3,347,000			1,211,000	1,187,000			1,700,000	1,700,000			381,000	340,000
Indefinite lived intangible assets, Accumulated Amortization
Finite lived intangible assets, Net Value	670,000	998,000				790,000	521,000			80,000	98,000							69,000	110,000
Indefinite lived intangible assets, Net Value			1,672,000	1,672,000
Other intangible assets, net	$ 2,342,000	$ 2,670,000
Amortizable Life					5 years	5 years		5 years	8 years	20 years	20 years	5 years	20 years			5 years	6 years			5 years	10 years