Summary Of Significant Accounting Policies (Tables)	12 Months Ended
Dec. 31, 2021
Summary Of Significant Accounting Policies [Abstract]
Schedule Of Warranty Accrual Activity	Year Ended December 31, 2021 2020Beginning balance $ — $ — Add: Accruals for warranties issued during the period 80 — Less: Settlements made during the period — —Ending balance $ 80 $ —
Anti-Dilutive Shares Excluded From Computation Of Diluted Net Loss Per Share	Year Ended December 31, 2021 2020 2019Common stock warrants — 612,310 167,847Common stock options 5,996,813 5,039,194 3,749,186Restricted stock units — 111,305 222,606Total 5,996,813 5,762,809 4,139,639

Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=123368208&loc=d3e12565-110249

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