Note 11 - Long-term Debt, Credit Agreements and Commercial Paper (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Long-term Debt Instruments [Table Text Block]

	December 31,
	2019			2018
	(Dollars in thousands)
Limited and non-recourse agreements:
Loans:
Non-recourse:
Other loans	$	8,997		$	6,241
Limited recourse:
Loan agreement with OPIC (the Olkaria III power plant)		192,646			210,641
Loan agreement with OPIC (the Platanares power plant)		104,459			112,652
Loan agreement with Banco Industrial S.A. and Westrust Bank (International) Limited		26,250			29,750
Loan agreement with a global industrial company (the Plumstriker battery energy storage projects)		21,615			—
Other loans		8,367			—
Senior Secured Notes:
Non-recourse:
OrCal Senior Secured Notes		—			18,652
DAC 1 Senior Secured Notes		78,247			83,319
Limited recourse:
OFC 2 Senior Secured Notes		203,040			217,810
Other loans		88,840			96,482
Total limited and non-recourse agreements		732,461			775,547
Less current portion		(58,932	)		(63,180	)
Non current portion	$	673,529		$	712,367
Full recourse agreements:
Senior Unsecured Bonds		204,332			204,332
Senior Unsecured Loan (Migdal)		150,000			100,000
Loan agreements with DEG (the Olkaria III and power plants 4 and 1 upgrade)		79,632			47,500
Revolving credit lines with banks		40,550			159,000
Total full recourse agreements		474,514			510,832
Less current portion		(117,122	)		(164,000	)
Non current portion	$	357,392		$	346,832

Schedule of Maturities of Long-term Debt [Table Text Block]

	(Dollars in thousands)
Year ending December 31:
2020	$	135,504
2021		76,259
2022		220,677
2023		98,982
2024		78,600
Thereafter		557,890
Total	$	1,167,912