Note 2 - Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Asset Impairment Charges		$ 7,500,000
Impairment of Long-Lived Assets to be Disposed of		7,500,000
Impairment of Long-Lived Assets Held-for-use		0
Goodwill, Impairment Loss	0	0
Unrecognized Tax Benefits	0	0
Proceeds from Customers for Progress Payments	5,600,000
Cash, Cash Equivalents, and Restricted Cash	8,000	68,469,000
Other Income [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Foreign Currency Transaction Gain (Loss), before Tax	1,489,000	281,000
Project Assets [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Impairment of Long-Lived Assets to be Disposed of	$ 2,055,000
PV Modules [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Warranty Term	25 years
Inverter and Balance of System Components [Member] | Minimum [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Warranty Term	5 years
Inverter and Balance of System Components [Member] | Maximum [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Warranty Term	10 years
Minimum [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Contract Terms	30 days
Maximum [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Contract Terms	365 days