Note 3 - Summary of Significant Accounting Policies (Detail) - Property, Plant and Equipment Useful Lives	12 Months Ended
	Dec. 31, 2012
Plant and Machinery [Member]
Propert, plant and equipment useful life	5
Furniture and Fixtures [Member]
Propert, plant and equipment useful life	5
Computer Equipment [Member] | Minimum [Member]
Propert, plant and equipment useful life	3
Computer Equipment [Member] | Maximum [Member]
Propert, plant and equipment useful life	5
Computer Equipment [Member]
Propert, plant and equipment useful life	-
Assets Held under Capital Leases [Member] | Minimum [Member]
Propert, plant and equipment useful life	3
Assets Held under Capital Leases [Member] | Maximum [Member]
Propert, plant and equipment useful life	5
Assets Held under Capital Leases [Member]
Propert, plant and equipment useful life	-
Trucks [Member]
Propert, plant and equipment useful life	3
Leasehold Improvements [Member] | Minimum [Member]
Propert, plant and equipment useful life	The shorter of the estimated life or the lease term
Solar Energy Facilities [Member]
Propert, plant and equipment useful life	20