Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2017

Accounting Policies [Abstract]

Cash and Cash Equivalents

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

	March 31, 2017			December 31, 2016
(in thousands, except percentages)	Amount		% of Total	Amount		% of Total
Cash accounts	$	511,200	59.0	$	488,504	59.4
Money market funds	354,988		41.0	333,975		40.6
Total	$	866,188		$	822,479