XML 33 R23.htm IDEA: XBRL DOCUMENT
v3.20.2

Derivative Liability (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2020
Derivative Liability |
Schedule of Changes in Fair Value | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine Months Ended September 30, | ​
​ | ​ | ​ | 2020 | ​ | ​ | 2019 | ​
Fair value of Exit Fee derivative liability at January 1 | ​ | $ | 969 | ​ | $ | 533 | ​
Change in estimated fair value of derivative liability | ​ | ​ | 290 | ​ | ​ | 246 | ​
Fair value of Exit Fee derivative liability at September 30 | ​ | $ | 1,259 | ​ | $ | 779 | ​

X
- Definition The tabular disclosure of changes in fair value of liability. + References No definition available. + Details
Name: | ardx_ScheduleOfChangesInFairValueTableTextBlock
Namespace Prefix: | ardx_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration