Organization and Summary of Significant Accounting Policies - Convertible Debt Securities (Details)	Sep. 30, 2020
Measurement Input, Discount Rate \| Liability Component of Convertible Debt \| 2024 Convertible Notes
Debt Conversion [Line Items]
Fair value assumptions, discount rate	0.08

Value of input used to measure long-term debt.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

Name:	us-gaap_LongTermDebtMeasurementInput
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant