Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net earnings	$ 27,298us-gaap_NetIncomeLoss	$ 27,266us-gaap_NetIncomeLoss
Total other comprehensive income (loss)	(777)	(97)
COMPREHENSIVE INCOME	$ 26,521us-gaap_ComprehensiveIncomeNetOfTax	$ 27,169us-gaap_ComprehensiveIncomeNetOfTax

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

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