The Company leases office space in the United States and foreign locations under operating lease agreements. Office space is the Company’s only material underlying asset class under operating lease agreements. The Company has no material finance leases.

Under the Company’s office space lease agreements, fixed payments and variable payments that depend on an index or rate are typically comprised of base rent and parking fees. Additionally, under these agreements the Company is generally responsible for certain variable payments that typically include certain taxes, utilities and maintenance costs, and other fees. These variable lease payments are generally based on the Company’s occupation or usage percentages and are subject to adjustments by the lessor.

As of March 31, 2019, the Company’s ROU asset and total lease liability balances were comprised of $74.3 million and $101.6 million, respectively, for leases in the United States and $13.4 million and $14.2 million, respectively, for foreign leases. The Company’s most significant lease is for its corporate headquarters, in which it leases approximately 214,000 square feet of office space at a location in Northern Virginia. The ROU asset and total lease liability balances related to the Company’s corporate headquarters lease were $69.5 million and $96.7 million, respectively, as of March 31, 2019. The lease agreement for the Company’s corporate headquarters location is set to expire in December 2030, with an option for the Company to extend the term for an additional five or 10 consecutive years. The Company is currently not reasonably certain it will exercise this renewal option and therefore has not included the renewal option in the lease term. Several of the Company’s remaining leases also contain options for renewal or options to terminate all or a portion of the leased space. The Company continually assesses the likelihood of exercising these options and recognizes an option as part of its ROU assets and lease liabilities if and when it is reasonably certain that it will exercise the option.

The following table presents the Company’s total lease cost and other lease details for the three months ended March 31, 2019 (in thousands, except years and discount rate):

Lease cost:
Operating lease cost	$	3,769
Short-term lease cost		814
Variable lease cost		311
Total lease cost	$	4,894
Other information:
Cash paid for amounts included in the measurement of operating lease liabilities	$	3,861
ROU assets obtained in exchange for new operating lease liabilities	$	1,017
Weighted-average remaining lease term in years – operating leases		10.6
Weighted-average discount rate – operating leases		6.0	%

The following table presents the maturities of the Company’s operating lease liabilities as of March 31, 2019 (in thousands):

For the period ended March 31,
2020	$	15,684
2021		15,439
2022		14,909
2023		14,717
2024		14,089
Thereafter		83,327
Total lease payments		158,165
Less: imputed interest		(42,402	)
Total	$	115,763

Reported as:
Current operating lease liabilities	$	9,102
Non-current operating lease liabilities		106,661
Total	$	115,763

The following table shows future minimum payments under noncancellable operating leases and purchase agreements with initial terms of greater than one year, based on the expected due dates of the various installments as of December 31, 2018 (in thousands), as previously reported in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018, prior to the adoption of ASU 2016-02:

	Operating Leases
Year	Amount
2019	$	27,768
2020		25,583
2021		18,573
2022		15,694
2023		15,607
Thereafter		92,347
	$	195,572