Cash and Cash Equivalents (Tables)

12 Months Ended

Dec. 31, 2018

Cash and cash equivalents [abstract]

Schedule of Cash and Cash Equivalents

	As at December 31,
	2018		2017
	$ Thousands
Cash in banks		72,074		1,313,710
Time deposits		59,049		103,678
		131,123		1,417,388