Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net Earnings	$ 56,078	$ 52,246
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustment	424	(477)
Total Other Comprehensive Income (Loss)	424	(477)
Comprehensive Income	$ 56,502	$ 51,769

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

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