Intangible Assets - Amortized Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 49,540	$ 45,790
Accumulated Amortization	34,817	31,020
Net Carrying Value	14,723	14,770
Distribution Networks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	38,060	38,060
Accumulated Amortization	28,479	25,193
Net Carrying Value	9,581	12,867
Customer Contracts and Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	6,690	6,690
Accumulated Amortization	5,661	5,310
Net Carrying Value	1,029	1,380
Completed Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	4,420	670
Accumulated Amortization	407	311
Net Carrying Value	4,013	359
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	370	370
Accumulated Amortization	270	206
Net Carrying Value	$ 100	$ 164

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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