Note 7 - Accounts and Notes Receivable (Details) (USD $)	6 Months Ended			3 Months Ended	12 Months Ended		12 Months Ended			3 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014 Variable Interest Entity, Not Primary Beneficiary [Member] Calwaii [Member]	Dec. 31, 2013 Sale of Greece Project [Member]	Jun. 30, 2014 Sale of Greece Project [Member]	Dec. 31, 2013 Sale of Greece Project [Member] Completed Contract Method [Member]	Jun. 30, 2014 Second Unrealated Customer [Member]	Dec. 31, 2013 Second Unrealated Customer [Member]	Jun. 30, 2013 Second Unrealated Customer [Member] Expected Collection Period [Member]	Jun. 30, 2013 Second Unrealated Customer [Member] Expected Collection Period [Member]	Dec. 31, 2013 Exchange and Release Agreement [Member] London Interbank Offered Rate (LIBOR) [Member] KDC Solar RTC, LLC [Member]	Dec. 31, 2013 Exchange and Release Agreement [Member] KDC Solar RTC, LLC [Member]	Mar. 31, 2014 Exchange and Release Agreement [Member] KDC Solar RTC, LLC [Member]	Dec. 31, 2013 Solar Hub Utilities, LLC [Member]	Mar. 31, 2013 Solar Hub Utilities, LLC [Member]	Apr. 27, 2012 Solar Hub Utilities, LLC [Member]	Jun. 08, 2012 Solar Hub Utilities, LLC [Member] Maximum [Member]	Jun. 30, 2014 Calwaii [Member]
Note 7 - Accounts and Notes Receivable (Details) [Line Items]
Revenues							$ 13,900,000
Increase (Decrease) in Accounts Receivable	(2,916,000)	(16,545,000)			8,800,000
Accounts Receivable Extended Collection Period					6 years
Accrued Liabilities, Current	738,000		741,000		5,100,000
Accounts Receivable, Net, Current	4,348,000		6,260,000		2,200,000	1,800,000		1,500,000	2,000,000
Accounts Receivable, Net, Noncurrent	11,345,000		12,349,000		6,600,000	6,000,000		5,300,000	5,800,000
Reclassifcation of Account Receivable from Current to Noncurrent										5,900,000
Accounts Receivable, Collection Term											1 year		15 years
Debt Instrument, Basis Spread on Variable Rate												4.60%
Notes, Loans and Financing Receivable, Net, Noncurrent	13,668,000		13,668,000											13,700,000
Financing Receivable, Gross																	1,000,000	9,000,000
Note Receivable, Interest Rate																10.00%	6.00%
Financing Receivable, Net			8,450,000										15,000,000		8,450,000				8,450,000
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage				50.00%
Interest Receivable																			$ 1,000,000