Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net Earnings	$ 40,546	$ 8,505	$ 89,789	$ 46,844
Other Comprehensive Income:
Foreign Currency Translation Adjustment	21	11	24	7
Total Other Comprehensive Income	21	11	24	7
Comprehensive Income	$ 40,567	$ 8,516	$ 89,813	$ 46,851