Additional Cash Flow Information

3 Months Ended

Mar. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

The cash, cash equivalents and restricted cash at the beginning and ending of each period presented in the Company’s condensed consolidated statements of cash flows for the three months ended March 31, 2019 and 2018 consisted of the following:



	Three Months Ended March 31,
	2019				2018
	Beginning of period		End of period		Beginning of period		End of period
	(in thousands)
Cash and cash equivalents	$	2,650,134	$	2,893,885	$	1,665,412	$	1,995,893
Prepaid expenses and other current assets	4,910		6,250		2,114		9,835
Other assets	3,209		1,397		—		—
Cash, cash equivalents and restricted cash per statement of cash flows	$	2,658,253	$	2,901,532	$	1,667,526	$	2,005,728

Supplemental cash flow information related to the Company’s leases was as follows:



	Three Months Ended March 31, 2019
	(in thousands)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	2,531
Operating cash flows from finance leases	$	11,910
Financing cash flows from finance leases	$	9,385

Right-of-use assets obtained in exchange for lease obligations
Operating leases	$	—
Finance leases	$	—