Basis of Presentation and Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Summary of Cash Reported in Condensed Consolidated Statements of Cash Flows

Cash as reported in the condensed consolidated statements of cash flows includes the aggregate amounts of cash and cash equivalents and restricted cash as presented on the condensed consolidated balance sheets and consists of (in thousands):

	March 31, 2019		December 31, 2018		March 31, 2018		December 31, 2017
Cash and cash equivalents	$	466,254	$	246,122	$	183,865	$	224,571
Restricted cash - noncurrent		2,220		2,143		286		286
Total cash, cash equivalents and restricted cash	$	468,474	$	248,265	$	184,151	$	224,857