At the inception of a contractual arrangement, the Company determines whether the contract contains a lease by assessing whether there is an identified asset and whether the contract conveys the right to control the use of the identified asset in exchange for consideration over a period of time. If both criteria are met, the Company calculates the associated lease liability and corresponding right-of-use asset upon lease commencement using a discount rate based on the rate implicit in the lease or an incremental borrowing rate commensurate with the term of the lease.

The Company records lease liabilities within current liabilities or long-term liabilities based upon the length of time associated with the lease payments. The Company records its operating lease right-of-use assets as long-term assets. Right-of-use assets for financing leases are recorded within property and equipment, net in the Balance Sheet. Leases with an initial term of 12 months or less are not recorded on the Balance Sheet. Instead, the Company recognizes lease expense for these leases on a straight-line basis over the lease term. In connection with certain operating leases, the Company has security deposits recorded and maintained as restricted cash totaling $0.4 million as of June 30, 2019.

The Company leases office and storage facilities and equipment under various operating and financing lease agreements. The initial terms of these leases range from 2 to 11 years and generally provide for periodic rent increases, and renewal and termination options. The Company’s lease agreements do not contain any material variable lease payments, residual value guarantees or material restrictive covenants.

Certain leases require the Company to pay taxes, insurance, and maintenance. Payments for the transfer of goods or services such as common area maintenance and utilities represent non-lease components. The Company elected the package of practical expedients and therefore does not separate non-lease components from lease components.

The table below summarizes the Company’s lease liabilities and corresponding right-of-use assets (in thousands, except years and rates):

	June 30, 2019
Assets
Operating	$	905
Financing		181
Total leased assets	$	1,086

Liabilities
Current:
Operating	$	157
Financing		127
Noncurrent:
Operating	$	748
Financing		54
Total lease liabilities	$	1,086

Weighted-average remaining lease term (years) - operating leases	7.20
Weighted-average remaining lease term (years) - finance leases	1.59
Weighted-average discount rate - operating leases	7.97	%
Weighted-average discount rate - finance leases	5.00	%

The table below summarizes the Company’s lease costs from its Unaudited Consolidated Statement of Operations, and cash payments from its Unaudited Consolidated Statement of Cash Flows during the three and six months ended June 30, 2019 (in thousands):

	Three months ended June 30, 2019		Six months ended June 30, 2019
Lease expense:
Operating lease expense	$	55	$	109
Finance lease expense:
Depreciation of right-of-use assets		28		56
Interest expense on lease liabilities		6		12
Total lease expense	$	89	$	177

Cash payment information:
Operating cash used for operating leases	$	55	$	109
Financing cash used for financing leases		20		28
Total cash paid for amounts included in the measurement of lease liabilities	$	75	$	137

The Company’s future minimum annual lease payments under operating and financing leases at June 30, 2019 are as follows (in thousands):

	Financing			Operating
	Leases			Leases
Remaining 2019	$	67		$	109
2020		120			205
2021		7			183
2022		—			123
2023		—			100
Thereafter		—			447
Total minimum lease payments	$	194		$	1,167
Less: amount representing interest		(13	)		(262	)
Present value of obligations under leases		181			905
Less: current portion		(127	)		(157	)
Noncurrent lease obligations	$	54		$	748

We have entered into agreements with various research organizations for pre-clinical and clinical development studies, which have provisions for cancellation. Under the terms of these agreements, the vendors provide a variety of services including conducting research, recruiting and enrolling patients, monitoring studies and data analysis. Payments under these agreements typically include fees for services and reimbursement of expenses. The timing of payments due under these agreements is estimated based on current study progress. As of June 30, 2019, we have clinical research study obligations of $2.5 million, $1.8 million of which is expected to be paid within a year. Should the timing of the clinical trials change, the timing of the payment of these obligations would also change.