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

12 Months Ended

Dec. 31, 2018

Notes Tables

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

	December 31,
	2018			2017
	(Dollars in thousands)
Limited and non-recourse agreements:
Loans:
Non-recourse:
Other loans	$	6,241		$	7,252
Limited recourse:
Loan agreement with OPIC (the Olkaria III power plant)		210,641			228,635
Loan agreement with OPIC (the Platanares power plant)		112,652			-
Loan agreement with Banco Industrial S.A. and Westrust Bank (International) Limited		29,750			33,251
Senior Secured Notes:
Non-recourse:
OrCal Senior Secured Notes		18,652			32,142
DAC 1 Senior Secured Notes		83,319			88,339
Limited recourse:
OFC 2 Senior Secured Notes		217,810			232,526
Other loans		96,482			-
		775,547			622,145
Less current portion		(63,180	)		(54,720	)
Non current portion	$	712,367		$	567,425
Full recourse agreements:
Senior Unsecured Bonds	$	204,332		$	204,332
Senior Unsecured Loan (Migdal)		100,000			-
Loan agreements with DEG (the Olkaria III and IV power plants)		47,500			50,000
Loan from a commercial bank		-			587
Revolving credit lines with banks		159,000			51,500
		510,832			306,419
Less current portion		(164,000	)		(54,587	)
Non current portion	$	346,832		$	251,832

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

	(Dollars in thousands)
Year ending December 31:
2019	$	68,180
2020		136,018
2021		64,039
2022		205,908
2023		84,101
Thereafter		570,751
Total	$	1,128,997