Summary of Other Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Gross	$ 3,100	$ 3,100
Accumulated Amortization	(1,071)	(535)
Net	2,029	2,565
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life (in months)	57 months	57 months	[1]
Gross	2,700	2,700	[1]
Accumulated Amortization	(853)	(426)	[1]
Net	1,847	2,274	[1]
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life (in months)	33 months	33 months	[1]
Gross	400	400	[1]
Accumulated Amortization	(218)	(109)	[1]
Net	$ 182	$ 291	[1]

[1] As adjusted to reflect the balances of Solar Power, Inc. beginning March 31, 2011, at the carrying value of LDK as required under the accounting guidelines for a transfer of an entity under common control (refer to Note 4-Acquisition of Solar Green Technology).