Note 12 - Subsequent Events	6 Months Ended
Jun. 30, 2016
Notes to Financial Statements
Subsequent Events [Text Block]	NOTE 12 — SUBSEQUENT EVENTS Guadeloupe power plant transaction In July 2016, we announced that we closed the previously announced acquisition of Geothermie Bouillante SA ( “ GB ” ). GB owns and operates the 14.75 MW Bouillante geothermal power plant located in Guadeloupe Island, a French territory in the Caribbean, which currently generates approximately 10 MW. GB also owns two exploration licenses providing an expansion potential of up to 45 MW of capacity. Pursuant to the terms of an Amended and Restated Investment Agreement ( “ Investment Agreement ” ) and Shareholders Agreement with Sageos Holding ( “ Sageos ” ), a wholly owned subsidiary of Bureau de Recherches Géologiques et Minières ( “ BRGM ” ), the Company together with Caisse des Dépôts et Consignations ( “ CDC ” ), a French state-owned financial organization, acquired an approximately 80% interest in GB allocated 75% to the Company and 25% to CDC. The Company and CDC will gradually increase their combined interest in GB to 85% and Sageos will hold the remaining balance. Pursuant to the agreements, the Company paid approximately $18.6 million (approx imately €16.7 million) to Sageos for its approximately 60% interest in GB. In addition, the Company is committed to further invest $8.4 million (approx imately €7.5 million) in the next two years, which will increase the Company’s interest to 63.75%. The cash will be used mainly for the enhancement of the power plant. The Company has planned modifications to the existing equipment as well as to further develop the asset, with a potential of reaching a total of 45 MW in phased development by 2021. Under the Investment Agreement, the Company will pay Sageos an additional amount of up to $13.4 million (approx imately $ €12 million) subject to the achievement of agreed production thresholds and capacity expansion within a defined time period. The Bouillante power plant sells its electricity under a new 15-year PPA that was entered into in February 2016 with Électricité de France S.A. ( “ EDF ” ) , the French electric utility. The Company plan s to optimize the use of the resource at the existing facilities and recover its current production to its design capacity of 14.75 MW by mid-2017. Upon completion of the enhancement, the plant is expected to generate approximately $22.3 million (approx imately €20 million) of annual revenues. Cash dividend On August 2, 2016, the Board declared, approved and authorized payment of a quarterly dividend of $3.5 million ($0.07 per share) to all holders of the Company’s issued and outstanding shares of common stock on August 16, 2016, payable on August 30, 2016.

NOTE 12 — SUBSEQUENT EVENTS

Guadeloupe power plant transaction

In July 2016, we announced that we closed the previously announced acquisition of Geothermie Bouillante SA (

“

”

). GB owns and operates the 14.75 MW Bouillante geothermal power plant located in Guadeloupe Island, a French territory in the Caribbean, which currently generates approximately 10 MW. GB also owns two exploration licenses providing an expansion potential of up to 45 MW of capacity.

Pursuant to the terms of an Amended and Restated Investment Agreement (

“

Investment Agreement

”

) and Shareholders Agreement with Sageos Holding (

“

Sageos

”

), a wholly owned subsidiary of Bureau de Recherches Géologiques et Minières (

“

BRGM

”

the Company

together with Caisse des Dépôts et Consignations (

“

CDC

”

), a French state-owned financial organization, acquired an approximately 80% interest in GB allocated 75% to

the Company

and 25% to CDC.

The Company

and CDC will gradually increase their combined interest in GB to 85% and Sageos will hold the remaining balance.

Pursuant to the agreements,

the Company

paid approximately

$18.6 million

(approx

imately

€16.7

million) to Sageos for its approximately 60% interest in GB. In addition,

the Company is

committed to further invest

$8.4

million (approx

imately

€7.5

million) in the next two years, which will increase

the Company’s

interest to 63.75%. The cash will be used mainly for the enhancement of the power plant.

The Company has

planned

modifications to the existing equipment as well as to further develop the asset, with a potential of reaching a total of 45 MW in phased development by 2021. Under the Investment Agreement,

the Company

will pay Sageos an additional amount of up to

$13.4

million (approx

imately

€12

million) subject to the achievement of agreed production thresholds and capacity expansion within a defined time period.

The

Bouillante power plant sells its electricity under a new 15-year PPA that was entered into in February 2016 with Électricité de France S.A. (

“

EDF

”

)

the French electric utility.

The Company

plan

to optimize the use of the resource at the existing facilities and recover its current production to its design capacity of 14.75 MW by mid-2017. Upon completion of the enhancement, the plant is expected to generate approximately

$22.3

million (approx

imately

€20

million) of annual revenues.

Cash dividend

On August 2, 2016, the Board declared, approved and authorized payment of a quarterly dividend of $3.5 million ($0.07 per share) to all holders of the Company’s issued and outstanding shares of common stock on August 16, 2016, payable on August 30, 2016.