Commitments and Contingencies - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | |||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Commitments And Contingencies [Line Items] | ||||
Operating lease rent expense | $ 3,667us-gaap_LeaseAndRentalExpense | $ 3,558us-gaap_LeaseAndRentalExpense | $ 3,588us-gaap_LeaseAndRentalExpense | |
Sub-lease income | 379us-gaap_OperatingLeasesRentExpenseSubleaseRentals1 | 805us-gaap_OperatingLeasesRentExpenseSubleaseRentals1 | 764us-gaap_OperatingLeasesRentExpenseSubleaseRentals1 | |
Assets acquired under capital leases | 321us-gaap_CapitalLeaseObligationsIncurred | |||
Depreciation expense | 546us-gaap_Depreciation | 423us-gaap_Depreciation | 471us-gaap_Depreciation | |
Contingent consideration payments | 1,805us-gaap_PaymentsToAcquireBusinessesGross | 703us-gaap_PaymentsToAcquireBusinessesGross | 720us-gaap_PaymentsToAcquireBusinessesGross | |
Payments recorded as compensation expense | 0samg_CompensationExpense | 31samg_CompensationExpense | ||
MCG Acquisition | Contingent Consideration | ||||
Commitments And Contingencies [Line Items] | ||||
Contingent consideration percentage of EBITDA |
22.00%samg_ContingentConsiderationPercentage / us-gaap_BusinessAcquisitionAxis = samg_McgAcquisitionMember / us-gaap_ContingentConsiderationByTypeAxis = samg_BusinessAcquisitionContingentConsiderationMember |
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Number of years contingent consideration adjusted annual EBITDA | 5 years | |||
Contingent consideration payments |
1,805us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = samg_McgAcquisitionMember / us-gaap_ContingentConsiderationByTypeAxis = samg_BusinessAcquisitionContingentConsiderationMember |
703us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = samg_McgAcquisitionMember / us-gaap_ContingentConsiderationByTypeAxis = samg_BusinessAcquisitionContingentConsiderationMember |
720us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = samg_McgAcquisitionMember / us-gaap_ContingentConsiderationByTypeAxis = samg_BusinessAcquisitionContingentConsiderationMember |
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Capital Lease Assets | ||||
Commitments And Contingencies [Line Items] | ||||
Depreciation expense |
81us-gaap_Depreciation / us-gaap_LeaseArrangementTypeAxis = samg_CapitalLeaseAssetsMember |
19us-gaap_Depreciation / us-gaap_LeaseArrangementTypeAxis = samg_CapitalLeaseAssetsMember |
19us-gaap_Depreciation / us-gaap_LeaseArrangementTypeAxis = samg_CapitalLeaseAssetsMember |
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Additional Office Space | ||||
Commitments And Contingencies [Line Items] | ||||
Operating lease rent expense, net |
5us-gaap_OperatingLeasesRentExpenseNet / us-gaap_MajorPropertyClassAxis = samg_AdditionalOfficeSpaceMember |
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Refundable security deposit |
3us-gaap_SecurityDeposit / us-gaap_MajorPropertyClassAxis = samg_AdditionalOfficeSpaceMember |
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Lease expires | Jul. 31, 2019 | |||
Number of rent free periods | 3 months | |||
Office Equipment | ||||
Commitments And Contingencies [Line Items] | ||||
Lease expires | Nov. 30, 2018 | |||
Capital lease obligation |
282us-gaap_CapitalLeaseObligations / us-gaap_MajorPropertyClassAxis = us-gaap_OfficeEquipmentMember |
19us-gaap_CapitalLeaseObligations / us-gaap_MajorPropertyClassAxis = us-gaap_OfficeEquipmentMember |
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Assets acquired under capital leases |
321us-gaap_CapitalLeaseObligationsIncurred / us-gaap_MajorPropertyClassAxis = us-gaap_OfficeEquipmentMember |
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Capital lease, period | 5 years | |||
Capital lease, minimum monthly payment |
5samg_CapitalLeasesMonthlyMinimumPayments / us-gaap_MajorPropertyClassAxis = us-gaap_OfficeEquipmentMember |
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Letter of Credit | ||||
Commitments And Contingencies [Line Items] | ||||
Refundable security deposit |
586us-gaap_SecurityDeposit / us-gaap_CreditFacilityAxis = us-gaap_LetterOfCreditMember |
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Boston landlord | Letter of Credit | ||||
Commitments And Contingencies [Line Items] | ||||
Refundable security deposit |
80us-gaap_SecurityDeposit / us-gaap_CreditFacilityAxis = us-gaap_LetterOfCreditMember / dei_LegalEntityAxis = samg_BostonLandlordMember |
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General, Administrative and Other Expenses | ||||
Commitments And Contingencies [Line Items] | ||||
Operating lease rent expense, net |
$ 3,288us-gaap_OperatingLeasesRentExpenseNet / us-gaap_IncomeStatementLocationAxis = us-gaap_GeneralAndAdministrativeExpenseMember |
$ 2,753us-gaap_OperatingLeasesRentExpenseNet / us-gaap_IncomeStatementLocationAxis = us-gaap_GeneralAndAdministrativeExpenseMember |
$ 2,824us-gaap_OperatingLeasesRentExpenseNet / us-gaap_IncomeStatementLocationAxis = us-gaap_GeneralAndAdministrativeExpenseMember |
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Capital leases monthly minimum payments. No definition available.
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Compensation expense. No definition available.
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Contingent consideration percentage. No definition available.
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- Definition
Operating lease rent free period. No definition available.
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- Definition
Performance fee payments period. No definition available.
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- Definition
Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The increase during the period in capital lease obligations due to entering into new capital leases. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. No definition available.
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Date which lease or group of leases is set to expire, in CCYY-MM-DD format. No definition available.
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Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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- Definition
Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The total amount of sublease rental income recognized during the period that reduces the entity's rent expense incurred under operating leases. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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