Other Long-term Liabilities (Tables)

12 Months Ended

Dec. 31, 2019

Other Liabilities Disclosure [Abstract]

Other Long-term Liabilities

The following table presents the components of other long-term liabilities as of December 31, 2019 and 2018:

	December 31,
	2019		2018
Purchase obligations	$	132,504	$	128,739
Provision for vacation pay	33,094		31,310
Accrued expenses on evacuation(*)	41,805		—
Other	18,075		10,558
	$	225,478	$	170,607