Organization and Summary of Significant Accounting Policies - Fair Value of Warrant and Derivative Liability (Details) $ in Thousands	3 Months Ended
Mar. 31, 2020 USD ($)
Schedule of Organization and Summary of Significant Accounting Policies [Line Items]
Reclassification of warrants to additional paid-in capital	$ (2,897)
Warrant Liability
Schedule of Organization and Summary of Significant Accounting Policies [Line Items]
Fair value, beginning of period	320
Issuance of warrants	1,654
Change in fair value	923
Reclassification of warrants to additional paid-in capital	$ (2,897)

Amount of increase in additional paid in capital (APIC) resulting from the issuance of warrants. Includes allocation of proceeds of debt securities issued with detachable stock purchase warrants.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 25
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109126253&loc=d3e4724-112606

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Name:	us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration