LEASES (Tables)

3 Months Ended

Mar. 31, 2019

Summary of Costs Included in Operating Expenses Related to Leases

The below table summarizes our costs included in operating expenses related to leases we have entered into through March 31, 2019:

Lease Cost	For the Three Months Ended March 31,
Operating lease cost	$	9,290
Variable lease cost		5,047
Total	$	14,337

Summary of Future Lease Payments for Non-cancellable Operating Leases and Reconciliation to Carrying Amount of Operating Lease Liability

Future lease payments for non-cancellable operating leases as of March 31, 2019 and a reconciliation to the carrying amount of the operating lease liability presented in the condensed consolidated balance sheet as of March 31, 2019 is as follows:

Year Ending December 31,
2019 (excluding the three months ended March 31, 2019)	$	11,125
2020		34,530
2021		35,776
2022		35,880
2023		35,575
2024		34,674
2025 and thereafter		356,211
Total undiscounted payments due under non-cancellable operating leases		543,771
Less imputed interest		(244,494	)
Total	$	299,277

Current operating lease liability	$	16,977
Non-current operating lease liability		282,300
Total	$	299,277

Future Minimum Payments Under Non-cancelable Leases

Under the prior lease guidance, minimum payments under our non-cancelable facility leases, as of December 31, 2018, were approximately as follows, in thousands:

Year Ending December 31,
2019	$	32,228
2020		34,826
2021		34,410
2022		34,826
2023		35,270
Thereafter		390,455
Total	$	562,015