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Equity-Based Compensation and Equity - Share-based Compensation, Activity (Detail) - shares | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Common Series C Units [Member] |  |  |
Beginning of the period | 174,190 | 156,975 | 150,906
Grants | 2,900 | 21,953 | 10,830
Forfeitures | (5,064) | (4,738) | (4,416)
Repurchases |  |  | (345)
End of the period | 172,026 | 174,190 | 156,975
Common Series C2 Units [Member] |  |  |
Beginning of the period | 33,400 | 33,525 |
Grants | 2,500 | 1,425 | 34,275
Forfeitures | (3,625) | (1,550) | (750)
End of the period | 32,275 | 33,400 | 33,525

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- Definition Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Repurchased In Period. + References No definition available. + Details
Name: | adv_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRepurchasedInPeriod
Namespace Prefix: | adv_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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Balance Type: | na
Period Type: | instant

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- Details
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Period Type: |

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- Details
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Period Type: |