XML 47 R34.htm IDEA: XBRL DOCUMENT
v3.21.2

Organization (Details) $ / shares in Units, $ in Thousands |  | 3 Months Ended
--- | --- | ---
Sep. 18, 2020 USD ($) vote $ / shares shares | Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($)
Subsidiary, Sale of Stock [Line Items] |  |  |
Shares redeemed (in shares) | shares | 100 |  |
Offering costs | $ |  | $ 1,079 | $ 0
Conversion of Class B Units to Class B Common Stock |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |
Conversion of stock (in shares) | shares | 1 |  |
Blocker Entities | Owners |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |
Ownership percentage | 100.00% |  |
Partnership |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |
Membership ownership percentage |  | 42.50% |
Class A Common Stock |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |
Common stock, number of votes | vote | 1 |  |
Class A Common Stock | Partnership |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |
Purchase of non-controlling interests | $ | $ 209,800 |  |
Number of partnership units acquired (in shares) | shares | 12,500,000 |  |
Class A Common Stock | Blocker Entities | Owners |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |
Number of shares owned after all transactions (in shares) | shares | 9,112,500 |  |
Class B Common Stock |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |
Common stock, number of votes | vote | 5 |  |
Class B Common Stock | Partnership |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |
Purchase of non-controlling interests | $ | $ 128,000 |  |
Number of partnership units acquired (in shares) | shares | 7,625,000 |  |
General Partner | Partnership |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |
Membership ownership percentage | 100.00% |  |
IPO |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |
Net proceeds from stock offering | $ | $ 337,800 |  |
Offering costs | $ | 24,500 |  |
IPO | Partnership |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |
Offering costs | $ | $ 9,700 |  |
IPO | Class A Common Stock |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |
Shares sold in offering (in shares) | shares | 20,125,000 |  |
Offering price per share (in dollars per share) | $ / shares | $ 18.00 |  |

X
- Definition Common Stock, Number of Votes + References No definition available. + Details
Name: | step_CommonStockNumberOfVotes
Namespace Prefix: | step_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Cumulative Percentage Ownership after All Transactions + References No definition available. + Details
Name: | step_CumulativePercentageOwnershipAfterAllTransactions
Namespace Prefix: | step_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Partnership Units Acquired + References No definition available. + Details
Name: | step_NumberOfPartnershipUnitsAcquired
Namespace Prefix: | step_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Shares Owned After All Transactions + References No definition available. + Details
Name: | step_NumberOfSharesOwnedAfterAllTransactions
Namespace Prefix: | step_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "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 4 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4313-108586 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 Reference 3: 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_ConversionOfStockSharesConverted1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 + Details
Name: | us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow for cost incurred directly with the issuance of an equity security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsOfStockIssuanceCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cash outflow to a noncontrolling interest. Includes, but not limited to, reduction of noncontrolling interest ownership. Excludes dividends paid to the noncontrolling interest. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsToMinorityShareholders
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Cash received on stock transaction after deduction of issuance costs. + References No definition available. + Details
Name: | us-gaap_SaleOfStockConsiderationReceivedOnTransaction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The number of shares issued or sold by the subsidiary or equity method investee per stock transaction. + References No definition available. + Details
Name: | us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction. + References No definition available. + Details
Name: | us-gaap_SaleOfStockPricePerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of stock bought back by the entity at the exercise price or redemption price. + 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=123467817&loc=d3e21463-112644 + Details
Name: | us-gaap_StockRedeemedOrCalledDuringPeriodShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
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_SubsidiarySaleOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ConversionOfStockByUniqueDescriptionAxis=step_ConversionOfClassBUnitsToClassBCommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_OwnershipAxis=step_BlockerEntitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=step_OwnersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_OwnershipAxis=step_StepStoneGroupLPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=step_PartnershipOfSubsidiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_PartnerTypeOfPartnersCapitalAccountAxis=us-gaap_GeneralPartnerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | dei_LegalEntityAxis=step_StepStoneGroupLPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |