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Segment Information and Concentrations of Risk - Additional Information (Detail)	9 Months Ended	3 Months Ended	9 Months Ended		3 Months Ended
	Sep. 30, 2014 Segments	Sep. 30, 2013 Net Revenues [Member] Customer Concentration [Member]	Sep. 30, 2014 Net Revenues [Member] Customer Concentration [Member]	Sep. 30, 2013 Net Revenues [Member] Customer Concentration [Member]	Sep. 30, 2014 Net Revenues [Member] Customer Concentration [Member] Customer One [Member]	Sep. 30, 2014 Net Revenues [Member] Customer Concentration [Member] Customer Two [Member]
Segment Reporting Information [Line Items]
Number of business segments	2
Net revenues, percentage		59.00%	44.00%	61.00%	54.00%	12.00%

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13537-108611



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13531-108611



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

+ Details

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X

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

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- Details

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