Goodwill and Other Intangible Assets - Carrying Amount of Goodwill (Detail) $ in Thousands	12 Months Ended
Dec. 31, 2015 USD ($)
Goodwill [Line Items]
Goodwill beginning balance	$ 66,045
Goodwill ending balance	75,969
Solar Juice Pty Ltd.
Goodwill [Line Items]
Acquisition of goodwill	8,238
CECEP Solar Energy Hong Kong Co., Limited
Goodwill [Line Items]
Acquisition of goodwill	1,417
Solar Power Incorporation Energiebau Renewable Gmbh
Goodwill [Line Items]
Acquisition of goodwill	$ 269

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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+ References

No definition available.

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