Interest expense and other financial costs (Tables)

12 Months Ended

Dec. 31, 2017

Interest expense and other financial costs [Abstract]

Interest expense and other financial costs

This line at December 31, 2017, 2016 and 2015 is comprised as follows:

	2017		2016		2015
Interest on trust certificates	$	942,266	$	684,829	$	618,818
Interest on other loans		97,590		98,630		95,713
Transaction cost of mandatorily convertible debentures into shares		87,482		-		-
Amortization of trust certificate transaction cost		75,209		76,152		75,224
Amortization of transaction cost associated with other loans		4,137		6,011		4,754
Other financial expenses		3,802		3,645		5,735
Valuation of interest rate hedge (CAP)		-		-		(12	)
	$	1,210,486	$	869,267	$	800,232