XML 52 R43.htm IDEA: XBRL DOCUMENT
v3.21.2

Commitments and Contingencies - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Feb. 29, 2020 | Nov. 30, 2019 | Jan. 31, 2019 | Sep. 30, 2021 | Jan. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2019 | Feb. 28, 2019
Commitments And Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |
Debt instrument interest rate |  |  |  |  |  |  |  | 8.00%
Convertible notes issued |  |  |  |  |  |  |  | $ 0.2
Percentage of selling price per share that can convertible into equity securities sold |  |  |  |  |  |  |  | 80.00%
Converted amount | $ 0.5 |  |  |  |  |  |  |
Series A Convertible Preferred Stock |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |
Converted shares | 301,685 |  |  |  |  |  |  |
Share price | $ 1.65816 |  |  |  |  |  |  |
May 2018 Note |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |
Maturity description |  |  |  | on or after February 5, 2021, if not converted earlier |  |  |  |
July 2018 Note |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |
Maturity description |  |  |  | on or after February 5, 2021, if not converted earlier |  |  |  |
February 2019 Note |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |
Maturity description |  |  |  | on or after May 16, 2020, if not converted earlier |  |  |  |
Unsecured Promissory Note | January Note |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |
Maturity description |  |  |  | on or before January 30, 2021 |  |  |  |
Percentage of final payment on advanced at maturity |  |  | 3.00% |  |  |  |  |
Debt instrument interest rate |  |  |  |  |  |  | 10.00% | 10.00%
Unsecured Promissory Note | January Note | Maximum |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |
Notes issued |  |  | $ 0.5 |  |  |  |  |
Unsecured Promissory Note | January Note | Prime Plus |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |
Debt instrument variable interest rate |  |  | 4.50% |  |  |  |  |
Unsecured Promissory Note | November Note |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |
Maturity description |  |  |  | on or before January 1, 2022 |  |  |  |
Percentage of final payment on advanced at maturity |  | 3.00% |  |  |  |  |  |
Debt instrument interest rate |  |  |  |  | 9.25% | 9.25% |  |
Unsecured Promissory Note | November Note | Maximum |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |
Notes issued |  | $ 0.5 |  |  |  |  |  |
Unsecured Promissory Note | November Note | Prime Plus |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |
Debt instrument variable interest rate |  | 4.50% |  |  |  |  |  |
Unsecured Promissory Note | February and March 2019 Draws | January Note |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |
Borrowings |  |  |  | $ 0.2 |  |  |  |
Unsecured Promissory Note | Jan 2020 and Dec 2019 Draws | November Note |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |
Borrowings |  |  |  | 0.4 |  |  |  |
Convertible Notes Issued in May and July 2018 |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |
Convertible notes issued |  |  |  | $ 0.3 |  |  |  |

X
- Definition Commitments and contingencies disclosure. + References No definition available. + Details
Name: | dsgn_CommitmentsAndContingenciesDisclosureLineItems
Namespace Prefix: | dsgn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt instrument periodic payment terms balloon payment to be paid, percentage. + References No definition available. + Details
Name: | dsgn_DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaidPercentage
Namespace Prefix: | dsgn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of selling price per share that can convertible into equity securities sold. + References No definition available. + Details
Name: | dsgn_PercentageOfSellingPricePerShareThatCanConvertibleIntoEquitySecuritiesSold
Namespace Prefix: | dsgn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 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(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
Name: | us-gaap_ConvertibleDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4332-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586 + Details
Name: | us-gaap_DebtConversionConvertedInstrumentSharesIssued1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4332-108586 + Details
Name: | us-gaap_DebtConversionOriginalDebtAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69C -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69B -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 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 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities. + 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 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentMaturityDateDescription
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Price of a single share of a number of saleable stocks of a company. + References No definition available. + Details
Name: | us-gaap_SharePrice
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer). + 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(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
Name: | us-gaap_UnsecuredDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | us-gaap_ShortTermDebtTypeAxis=dsgn_May2018NoteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortTermDebtTypeAxis=dsgn_July2018NoteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortTermDebtTypeAxis=dsgn_February2019NoteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=dsgn_UnsecuredPromissoryNoteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortTermDebtTypeAxis=dsgn_JanuaryNoteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_PrimeRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortTermDebtTypeAxis=dsgn_NovemberNoteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=dsgn_FebruaryAndMarch2019DrawsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=dsgn_Jan2020AndDec2019DrawsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=dsgn_ConvertibleNotesIssuedInMayAndJuly2018Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |