Intangible Assets - Amortized Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 47,280	$ 46,550
Accumulated Amortization	40,965	36,880
Net Carrying Value	6,315	9,670
Distribution networks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	38,060	38,060
Accumulated Amortization	35,051	31,765
Net Carrying Value	3,009	6,295
Customer contracts and relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	4,880	4,740
Accumulated Amortization	4,749	4,740
Net Carrying Value	131	0
Completed technologies
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	4,340	3,750
Accumulated Amortization	1,165	375
Net Carrying Value	$ 3,175	$ 3,375

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

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

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