Cash and cash equivalents (Tables)

12 Months Ended

Dec. 31, 2018

Cash and cash equivalents [Abstract]

Cash and Cash Equivalents

Cash and cash equivalents at December 31, 2018 and 2017, are summarized as follows:

	2018		2017
Cash on hand	$	864	$	925
Cash at banks		123,950		158,035
Short-term investments (a)		154,028		263,123
Restricted cash		39,313		39,471
	$	318,155	$	461,554

(a) Includes fix-term deposits (promissory notes) and repurchase/resell agreements with terms up to 3 days.