XML 53 R43.htm IDEA: XBRL DOCUMENT
v3.20.2

Stockholders' Equity (Details) - USD ($) | 1 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2015 | Jun. 30, 2020 | Sep. 30, 2020 | Jul. 31, 2020
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Warrants sold and issued to purchase common stock | 2,172,899 |  |  |
Purchase price of common shares | $ 0.125 |  |  |
Exercise price for warrants | $ 13.91 |  |  |
Warrant exercise period | 5 years |  |  |
Warrants exercised |  | 0 |  |
Maximum aggregate offering price |  |  |  | $ 250,000,000
AT The Market Offering [Member] |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Number of shares offered, issued or sold |  |  | 0 |
Common Stock | AT The Market Offering [Member] |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Maximum aggregate offering price |  |  |  | $ 100,000,000

X
- Definition Total number of common shares of an entity that have been offered, issued or sold to shareholders. + References No definition available. + Details
Name: | ardx_CommonStockSharesOfferedIssuedOrSold
Namespace Prefix: | ardx_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of maximum aggregate offering price. + References No definition available. + Details
Name: | ardx_MaximumAggregateOfferingPrice
Namespace Prefix: | ardx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The period during which warrants can be exercised. + References No definition available. + Details
Name: | ardx_WarrantTerm
Namespace Prefix: | ardx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of warrants (or share units) exercised during the current period. + References No definition available. + Details
Name: | ardx_WarrantsExercisedInPeriod
Namespace Prefix: | ardx_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Per share or per unit amount of equity securities issued. + References No definition available. + Details
Name: | us-gaap_SharesIssuedPricePerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SubsidiarySaleOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=ardx_AtMarketOfferingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |