Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2016

Accounting Policies [Abstract]

Cash and Cash Equivalents

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

	June 30, 2016			December 31, 2015
(in thousands, except percentages)	Amount		% of Total	Amount		% of Total
Cash accounts	$	488,600	57.9	$	427,244	54.5
Money market mutual funds	354,755		42.1	356,924		45.5
Total	$	843,355		$	784,168