XML 41 R31.htm IDEA: XBRL DOCUMENT
v3.21.2

Organization and Description of The Business (Details) $ in Millions |  | 6 Months Ended |
--- | --- | --- | ---
Jun. 25, 2021 shares | Jun. 30, 2021 USD ($) shares | Dec. 31, 2020 shares
Stock issued during period, value, conversion of convertible securities | $ |  | $ 30.0 |
Stockholders' equity, reverse stock split | 1-for-15 |  |
Common stock, shares issued (in shares) | 5,365,899 | 6,637,081 | 527,265
Business combination, exchange ratio | 0.0322 |  |
Common stock, shares outstanding (in shares) |  | 6,637,081 | 527,265
Stockholders Equity Note Stock Split Exchange Ratio | 0.0322 | 0.0322 |
Conversion of Preferred Stock into a share of Common Stock |  |  |
Common stock, shares issued (in shares) |  | 6,635,345 |
Common stock, shares outstanding (in shares) |  | 6,635,345 |

X
- Definition Business combination exchange ratio. + References No definition available. + Details
Name: | tpst_BusinessCombinationExchangeRatio
Namespace Prefix: | tpst_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Stockholders equity note stock split exchange ratio. + References No definition available. + Details
Name: | tpst_StockholdersEquityNoteStockSplitExchangeRatio
Namespace Prefix: | tpst_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockSharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. + References Reference 1: 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 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockSharesOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The gross value of stock issued during the period upon the conversion of convertible securities. + References Reference 1: 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 2: 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 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Description of the reverse stock split arrangement. Also provide the retroactive effect given by the reverse split that occurs after the balance sheet date but before the release of financial statements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 4.C) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187143-122770 + Details
Name: | us-gaap_StockholdersEquityReverseStockSplit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtConversionByUniqueDescriptionAxis=tpst_ConversionOfPreferredStockIntoAShareOfCommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |