Commitments and Contingencies (Future Payments Used in Measurement of Lease Liabilities) (Details) $ in Thousands	Jun. 30, 2021 USD ($)
Operating leases
Remainder of 2021	$ 385
2022	627
2023	21
2024	0
2025	0
Total undiscounted lease payments	1,033
Less amount representing interest	(64)
Present value of lease liabilities	969
Finance leases
Remainder of 2021	64
2022	63
2023	58
2024	57
2025	3
Total undiscounted lease payments	245
Less amount representing interest	(19)
Present value of lease liabilities	$ 226

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977