XML 39 R26.htm IDEA: XBRL DOCUMENT
v3.20.4

Commitments and Contingencies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Operating Leased Assets [Line Items] |
Summary of Contractual Obligations | The following table summarizes our contractual obligations as of December 31, 2020 (in thousands):
|  | Total |  |  | Less than 1 year |  |  | 1-3 years |  |  | 3-5 years |  |  | More than 5 years |
Seattle office operating lease |  | $ | 25 |  |  | $ | 25 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Vancouver office operating lease - new |  | $ | 142 |  |  | $ | 68 |  |  | $ | 74 |  |  | $ | — |  |  | $ | — |
Total |  | $ | 167 |  |  | $ | 93 |  |  | $ | 74 |  |  | $ | — |  |  | $ | — |
Summary of Other Information Related to Leases | Other information related to leases was as follows:
|  | Year Ended
|  | December 31,
|  | 2020 |  |  | 2019 |  |
Supplemental Cash Flows Information |  |  |  |  |  |  |  |  |
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |  |  |  |  |  |
Operating cash flows from operating leases |  | $ | 186 |  |  | $ | 176 |  |
Right-of-use assets obtained in exchange for lease obligations: |  |  |  |  |  |  |  |  |
Operating leases |  |  | — |  |  |  | 455 |  |
Weighted Average Remaining Lease Term |  |  |  |  |  |  |  |  |
Operating leases |  | 1.77 years |  |  | 2.16 years |  |
Weighted Average Discount Rate |  |  |  |  |  |  |  |  |
Operating leases |  |  | 9.97 | % |  |  | 9.97 | % |
Vancouver Office Operating Lease [Member] |
Operating Leased Assets [Line Items] |
Summary of Future Minimum Annual Lease Payments | The future minimum annual lease payments under the Vancouver lease are as follows (in thousands):
2021 |  |  | 68 |
2022 |  |  | 68 |
2023 |  |  | 6 |
Total |  | $ | 142 |
Seattle Lease Arrangement |
Operating Leased Assets [Line Items] |
Summary of Future Minimum Annual Lease Payments | The future minimum annual lease payments under the Seattle Lease were as follows (in thousands):
2021 |  |  | 25 |
Total |  | $ | 25 |

X
- Definition Schedule of supplemental cash flows information related to leases. + References No definition available. + Details
Name: | achv_ScheduleOfSupplementalCashFlowsInformationRelatedToLeasesTableTextBlock
Namespace Prefix: | achv_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of contractual obligation by timing of payment due. Includes, but is not limited to, long-term debt obligation, lease obligation, and purchase obligation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 303 -Paragraph (a) -Subparagraph (5) + Details
Name: | srt_ContractualObligationFiscalYearMaturityScheduleTableTextBlock
Namespace Prefix: | srt_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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_OperatingLeasedAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=achv_VancouverOfficeOperatingLeaseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=achv_SeattleLeaseArrangementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |