Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2016

Accounting Policies [Abstract]

Cash and Cash Equivalents

The Company’s cash and cash equivalent balances comprise the following:

	March 31, 2016			December 31, 2015
(in thousands, except percentages)	Amount		% of Total	Amount		% of Total
Cash accounts	$	521,033	60.3	$	427,244	54.5
Money market mutual funds	342,402		39.7	356,924		45.5
Total	$	863,435		$	784,168