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OPERATING LEASES (Tables)

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Components of lease costs

The components of lease costs included in operating expenses for the New Jersey Lease and the Foster City Lease on our statements of operations were as follows:

		Year Ended December 31,
(In thousands)		2020				2019				2018
Operating lease costs		$	1,143			$	783			$	678
Variable lease costs (1)			293				17				31
Total lease costs		$	1,436			$	800			$	709

(1) Variable lease costs represent non-lease components, such as common area maintenance charges.

Undiscounted future non-cancellable lease payments

The undiscounted future non-cancellable lease payments under the Menlo Park Lease, the New Jersey Lease and the Foster City Lease as of December 31, 2020 were as follows (in thousands): 

2021		$	913
2022			937
2023			962
2024			988
2025			1,014
Thereafter			2,807
Total lease payments			7,621
Less: imputed interest			(1,944	)
Total		$	5,677

X

- Definition

Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980

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X

- References

No definition available.

+ Details

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X

- Definition

Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980

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