Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net (loss) earnings	$ (6,679)	$ 25,061
Foreign currency translation adjustments	5,555	2,450
Total other comprehensive income	5,555	2,450
Comprehensive (loss) income	$ (1,124)	$ 27,511