Consolidated Statements of Comprehensive Earnings - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Consolidated Statements of Comprehensive Earnings
Net earnings	$ 110,993	$ 57,284	$ 91,221
Other comprehensive earnings (loss):
Unrealized (loss) gain on marketable securities, net of tax	(2,411)	(613)	354
Other comprehensive earnings (loss)	(2,411)	(613)	354
Comprehensive earnings	$ 108,582	$ 56,671	$ 91,575

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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