$MMI
Marcus & Millichap, Inc. Stock $mmi

$mmi Overview Financials Valuation SEC Filings Company Website

2023 Q1 Form 10-K Financial Statement

#000157873223000013 Filed on February 28, 2023

Income Statement

Concept	2023 Q1	2022 Q4	2022
Revenue	$154.8M	$262.4M	$1.302B
YoY Change	-51.55%	-46.99%	0.41%
Cost Of Revenue	$95.43M	$180.7M	$850.9M
YoY Change	-51.5%	-45.78%	1.27%
Gross Profit	$59.37M	$81.73M	$450.8M
YoY Change	-51.62%	-49.49%	-1.19%
Gross Profit Margin	38.35%	31.14%	34.63%
Selling, General & Admin	$72.22M	$72.63M	$300.0M
YoY Change	-3.11%	-5.69%	17.58%
% of Gross Profit	121.65%	88.87%	66.55%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$2.000M	$3.239M	$13.41M
YoY Change	-48.86%	11.11%	14.38%
% of Gross Profit	3.37%	3.96%	2.97%
Operating Expenses	$170.9M	$75.87M	$1.164B
YoY Change	117.8%	-5.07%	336.28%
Operating Profit	-$16.06M	$5.857M	$137.4M
YoY Change	-136.3%	-92.85%	-27.44%
Interest Expense	$215.0K	-$161.0K	$708.0K
YoY Change	-234.38%	11.81%	-222.07%
% of Operating Profit		-2.75%	0.52%
Other Income/Expense, Net	$4.810M	$4.369M	$5.336M
YoY Change	968.89%	144.08%	17.87%
Pretax Income	-$11.47M	$10.07M	$142.0M
YoY Change	-125.74%	-87.95%	-26.53%
Income Tax	-$5.633M	$2.153M	$37.80M
% Of Pretax Income		21.39%	26.62%
Net Earnings	-$5.833M	$7.912M	$104.2M
YoY Change	-117.79%	-87.24%	-26.84%
Net Earnings / Revenue	-3.77%	3.01%	8.01%
Basic Earnings Per Share	-$0.15		$2.61
Diluted Earnings Per Share	-$0.15	$0.20	$2.59
COMMON SHARES
Basic Shares Outstanding	39.24M shares	39.37M shares	39.89M shares
Diluted Shares Outstanding	39.20M shares		40.19M shares

Balance Sheet

Concept	2023 Q1	2022 Q4	2022
SHORT-TERM ASSETS
Cash & Short-Term Investments	$360.5M	$489.3M	$489.3M
YoY Change	-32.57%	-13.55%	-13.55%
Cash & Equivalents	$228.0M	$235.9M	$235.9M
Short-Term Investments	$132.5M	$253.4M	$253.4M
Other Short-Term Assets	$5.052M	$7.282M	$20.70M
YoY Change	-77.33%	38.18%	-16.85%
Inventory
Prepaid Expenses	$8.740M	$9.411M
Receivables
Other Receivables
Total Short-Term Assets	$405.2M	$527.1M	$527.1M
YoY Change	-29.01%	-13.32%	-13.32%
LONG-TERM ASSETS
Property, Plant & Equipment	$28.22M	$27.64M	$115.6M
YoY Change	-72.11%	19.2%	10.38%
Goodwill	$37.93M	$37.91M
YoY Change	848.28%	11.28%
Intangibles
YoY Change
Long-Term Investments	$80.45M	$78.15M	$78.15M
YoY Change	25.9%	-37.04%	-37.04%
Other Assets	$17.29M	$15.86M	$227.1M
YoY Change	-90.64%	20.64%	41.85%
Total Long-Term Assets	$505.3M	$476.6M	$476.6M
YoY Change	23.44%	9.04%	9.04%
TOTAL ASSETS
Total Short-Term Assets	$405.2M	$527.1M	$527.1M
Total Long-Term Assets	$505.3M	$476.6M	$476.6M
Total Assets	$910.5M	$1.004B	$1.004B
YoY Change	-7.11%	-3.97%	-3.97%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$12.39M	$11.45M	$11.45M
YoY Change	-49.19%	-52.82%	-52.82%
Accrued Expenses	$23.49M	$55.31M	$55.31M
YoY Change	-31.2%	-19.63%	-19.63%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$102.9M	$152.0M	$152.0M
YoY Change	-46.47%	-32.63%	-32.63%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$8.229M	$8.614M	$138.2M
YoY Change	-92.69%	-24.4%	12.1%
Total Long-Term Liabilities	$8.229M	$8.614M	$138.2M
YoY Change	-92.69%	-24.4%	12.1%
TOTAL LIABILITIES
Total Short-Term Liabilities	$102.9M	$152.0M	$152.0M
Total Long-Term Liabilities	$8.229M	$8.614M	$138.2M
Total Liabilities	$228.3M	$290.2M	$290.2M
YoY Change	-25.08%	-16.82%	-16.82%
SHAREHOLDERS EQUITY
Retained Earnings	$551.7M	$585.6M
YoY Change		2.1%
Common Stock	$132.9M	$131.5M
YoY Change		7.96%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$682.2M	$713.5M	$713.5M
YoY Change
Total Liabilities & Shareholders Equity	$910.5M	$1.004B	$1.004B
YoY Change	-7.11%	-3.97%	-3.97%

Cashflow Statement

Concept	2023 Q1	2022 Q4	2022
OPERATING ACTIVITIES
Net Income	-$5.833M	$7.912M	$104.2M
YoY Change	-117.79%	-87.24%	-26.84%
Depreciation, Depletion And Amortization	$2.000M	$3.239M	$13.41M
YoY Change	-48.86%	11.11%	14.38%
Cash From Operating Activities	-$101.2M	$25.40M	$13.63M
YoY Change	49.86%	-83.75%	-94.67%
INVESTING ACTIVITIES
Capital Expenditures	$2.863M	$3.102M	$11.67M
YoY Change	-252.04%	-218.44%	-270.13%
Acquisitions	$0.00		$12.50M
YoY Change	-100.0%		-5558.52%
Other Investing Activities	$120.2M	-$19.58M	-$42.31M
YoY Change	1255.96%	-60.8%	-58.32%
Cash From Investing Activities	$117.4M	-$22.68M	-$53.98M
YoY Change	1580.6%	-56.85%	-50.19%
FINANCING ACTIVITIES
Cash Dividend Paid	$441.0K		$60.40M
YoY Change
Common Stock Issuance & Retirement, Net			$29.05M
YoY Change			4349.16%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$24.02M	-37.78M	-$105.6M
YoY Change	304.09%	-23421.6%	1683.32%
NET CHANGE
Cash From Operating Activities	-$101.2M	25.40M	$13.63M
Cash From Investing Activities	$117.4M	-22.68M	-$53.98M
Cash From Financing Activities	-$24.02M	-37.78M	-$105.6M
Net Change In Cash	-$7.847M	-35.06M	-$146.3M
YoY Change	-88.2%	-133.75%	-203.28%
FREE CASH FLOW
Cash From Operating Activities	-$101.2M	$25.40M	$13.63M
Capital Expenditures	$2.863M	$3.102M	$11.67M
Free Cash Flow	-$104.1M	$22.30M	$1.963M
YoY Change	58.52%	-85.97%	-99.25%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2022	dei	Entity Central Index Key EntityCentralIndexKey	0001578732
CY2022	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
CY2022	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2022	dei	Amendment Flag AmendmentFlag	false
CY2022	dei	Document Type DocumentType	10-K
CY2022	dei	Document Annual Report DocumentAnnualReport	true
CY2022	dei	Document Period End Date DocumentPeriodEndDate	2022-12-31
CY2022	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2022	dei	Document Transition Report DocumentTransitionReport	false
CY2022	dei	Entity File Number EntityFileNumber	001-36155
CY2022	dei	Entity Registrant Name EntityRegistrantName	MARCUS & MILLICHAP, INC.
CY2022	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2022	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	35-2478370
CY2022	dei	Entity Address Address Line1 EntityAddressAddressLine1	23975 Park Sorrento, Suite 400
CY2022	dei	Entity Address City Or Town EntityAddressCityOrTown	Calabasas
CY2022	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
CY2022	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	91302
CY2022	dei	City Area Code CityAreaCode	818
CY2022	dei	Local Phone Number LocalPhoneNumber	212-2250
CY2022	dei	Security12b Title Security12bTitle	Common Stock, par value $0.0001 per share
CY2022	dei	Trading Symbol TradingSymbol	MMI
CY2022	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2022	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2022	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2022	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2022	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2022	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2022	dei	Entity Small Business EntitySmallBusiness	false
CY2022	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2022	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2022	dei	Entity Shell Company EntityShellCompany	false
CY2022Q2	dei	Entity Public Float EntityPublicFloat	906900000	usd
CY2023Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	39243988	shares
CY2022	dei	Auditor Firm AuditorFirmId	42
CY2022	dei	Auditor Name AuditorName	Ernst & Young LLP
CY2022	dei	Auditor Location AuditorLocation	Los Angeles, California
CY2022	dei	Auditor Name AuditorName	Ernst & Young LLP
CY2022	dei	Auditor Location AuditorLocation	Los Angeles, California
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	16000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	235873000	usd
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	382140000	usd
CY2022Q4	mmi	Commissions Receivable Net Current CommissionsReceivableNetCurrent	8453000	usd
CY2021Q4	mmi	Commissions Receivable Net Current CommissionsReceivableNetCurrent	17230000	usd
CY2022Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	9411000	usd
CY2021Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	13220000	usd
CY2022Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	8682000	usd
CY2021Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	0	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Current DebtSecuritiesAvailableForSaleAmortizedCostCurrent	254682000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Current DebtSecuritiesAvailableForSaleAmortizedCostCurrent	183915000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Current DebtSecuritiesAvailableForSaleAllowanceForCreditLossCurrent	0	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Current DebtSecuritiesAvailableForSaleAllowanceForCreditLossCurrent	0	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	253434000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	183868000	usd
CY2022Q4	mmi	Advances And Loans Net Current AdvancesAndLoansNetCurrent	4005000	usd
CY2021Q4	mmi	Advances And Loans Net Current AdvancesAndLoansNetCurrent	6403000	usd
CY2022Q4	us-gaap	Other Assets Current OtherAssetsCurrent	7282000	usd
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CY2021Q4	us-gaap	Assets Current AssetsCurrent	608131000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	27644000	usd
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	23192000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	87945000	usd
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	81528000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Noncurrent DebtSecuritiesAvailableForSaleAmortizedCostNoncurrent	72819000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Noncurrent DebtSecuritiesAvailableForSaleAmortizedCostNoncurrent	111858000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Noncurrent DebtSecuritiesAvailableForSaleAllowanceForCreditLossNoncurrent	0	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Noncurrent DebtSecuritiesAvailableForSaleAllowanceForCreditLossNoncurrent	0	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities Noncurrent AvailableForSaleSecuritiesDebtSecuritiesNoncurrent	68595000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities Noncurrent AvailableForSaleSecuritiesDebtSecuritiesNoncurrent	112610000	usd
CY2022Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	9553000	usd
CY2021Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	11508000	usd
CY2022Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	41321000	usd
CY2021Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	33736000	usd
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CY2021Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	48105000	usd
CY2022Q4	mmi	Advances And Loans Net Non Current AdvancesAndLoansNetNonCurrent	169955000	usd
CY2021Q4	mmi	Advances And Loans Net Non Current AdvancesAndLoansNetNonCurrent	113242000	usd
CY2022Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	15859000	usd
CY2021Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	13146000	usd
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CY2022Q4	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	11450000	usd
CY2021Q4	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	15487000	usd
CY2022Q4	mmi	Deferred Compensation And Commissions Current DeferredCompensationAndCommissionsCurrent	75321000	usd
CY2021Q4	mmi	Deferred Compensation And Commissions Current DeferredCompensationAndCommissionsCurrent	114685000	usd
CY2022Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	0	usd
CY2021Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	17853000	usd
CY2022Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	16984000	usd
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	18973000	usd
CY2022Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	38327000	usd
CY2021Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	49848000	usd
CY2022Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	9933000	usd
CY2021Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	8784000	usd
CY2022Q4	us-gaap	Liabilities Current LiabilitiesCurrent	152015000	usd
CY2021Q4	us-gaap	Liabilities Current LiabilitiesCurrent	225630000	usd
CY2022Q4	mmi	Deferred Compensation And Commissions Non Current DeferredCompensationAndCommissionsNonCurrent	64461000	usd
CY2021Q4	mmi	Deferred Compensation And Commissions Non Current DeferredCompensationAndCommissionsNonCurrent	53536000	usd
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	65109000	usd
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	58334000	usd
CY2022Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	8614000	usd
CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	11394000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	290199000	usd
CY2021Q4	us-gaap	Liabilities Liabilities	348894000	usd
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	usd
CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	usd
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
CY2021Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	25000000	shares
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CY2021Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
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CY2022Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
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CY2022Q4	us-gaap	Common Stock Value CommonStockValue	4000	usd
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CY2022Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	131541000	usd
CY2021Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	121844000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	585581000	usd
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CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	713509000	usd
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CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1003708000	usd
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1045198000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1301710000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1296440000	usd
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	716906000	usd
CY2022	mmi	Services Cost ServicesCost	850894000	usd
CY2021	mmi	Services Cost ServicesCost	840209000	usd
CY2020	mmi	Services Cost ServicesCost	447879000	usd
CY2022	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	300009000	usd
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CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	10899000	usd
CY2022	us-gaap	Operating Expenses OperatingExpenses	1164309000	usd
CY2021	us-gaap	Operating Expenses OperatingExpenses	1107084000	usd
CY2020	us-gaap	Operating Expenses OperatingExpenses	663292000	usd
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	137401000	usd
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	189356000	usd
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	53614000	usd
CY2022	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	5336000	usd
CY2021	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	4527000	usd
CY2020	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	6650000	usd
CY2022	us-gaap	Interest Expense InterestExpense	708000	usd
CY2021	us-gaap	Interest Expense InterestExpense	580000	usd
CY2020	us-gaap	Interest Expense InterestExpense	900000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	142029000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	193303000	usd
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	59364000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	37804000	usd
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CY2022	us-gaap	Net Income Loss NetIncomeLoss	104225000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	142470000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	42838000	usd
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.61
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.57
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.08
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.59
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.55
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.08
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39893000	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39888000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39642000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	40186000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	40187000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	39735000	shares
CY2022	us-gaap	Net Income Loss NetIncomeLoss	104225000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	142470000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	42838000	usd
CY2022	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-4565000	usd
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-1554000	usd
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	799000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	70000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-72000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-34000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-1559000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-505000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	286000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-4635000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-1482000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	833000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	usd
CY2022	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	usd
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	usd
CY2022	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	108000	usd
CY2021	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-182000	usd
CY2020	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-237000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-4527000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1664000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	596000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	99698000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	140806000	usd
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	43434000	usd
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	494874000	usd
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	43434000	usd
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation And Exercise Of Stock Options AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions	9905000	usd
CY2020	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	642000	usd
CY2020	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	2023000	usd
CY2020	mmi	Reduction Of Stock Notes Receivable From Employees ReductionOfStockNotesReceivableFromEmployees	4000	usd
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	546836000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	140806000	usd
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation And Exercise Of Stock Options AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions	10361000	usd
CY2021	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	653000	usd
CY2021	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	1000000	usd
CY2021	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	3352000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	696304000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	99698000	usd
CY2022	us-gaap	Dividends Common Stock DividendsCommonStock	62572000	usd
CY2022	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation And Exercise Of Stock Options AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions	17312000	usd
CY2022	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	709000	usd
CY2022	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	9741000	usd
CY2022	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	1417000	usd
CY2022	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	29618000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	713509000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	104225000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	142470000	usd
CY2020	us-gaap	Profit Loss ProfitLoss	42838000	usd
CY2022	us-gaap	Depreciation And Amortization DepreciationAndAmortization	13406000	usd
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	11721000	usd
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	10899000	usd
CY2022	mmi	Noncash Lease Expense NoncashLeaseExpense	23112000	usd
CY2021	mmi	Noncash Lease Expense NoncashLeaseExpense	23729000	usd
CY2020	mmi	Noncash Lease Expense NoncashLeaseExpense	22825000	usd
CY2022	mmi	Credit Loss Expense Reversal CreditLossExpenseReversal	-51000	usd
CY2021	mmi	Credit Loss Expense Reversal CreditLossExpenseReversal	166000	usd
CY2020	mmi	Credit Loss Expense Reversal CreditLossExpenseReversal	188000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	17312000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	10361000	usd
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	9905000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-6073000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-11845000	usd
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	473000	usd
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-534000	usd
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-3824000	usd
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	299000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	86000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	219000	usd
CY2020	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	192000	usd
CY2022	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	973000	usd
CY2021	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-641000	usd
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-895000	usd
CY2022	mmi	Increase Decrease In Commissions Receivable IncreaseDecreaseInCommissionsReceivable	-8445000	usd
CY2021	mmi	Increase Decrease In Commissions Receivable IncreaseDecreaseInCommissionsReceivable	10832000	usd
CY2020	mmi	Increase Decrease In Commissions Receivable IncreaseDecreaseInCommissionsReceivable	3290000	usd
CY2022	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-3802000	usd
CY2021	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	3066000	usd
CY2020	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-774000	usd
CY2022	mmi	Increase Decrease In Advances And Loans IncreaseDecreaseInAdvancesAndLoans	54818000	usd
CY2021	mmi	Increase Decrease In Advances And Loans IncreaseDecreaseInAdvancesAndLoans	12382000	usd
CY2020	mmi	Increase Decrease In Advances And Loans IncreaseDecreaseInAdvancesAndLoans	39773000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	9830000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	3046000	usd
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	2743000	usd
CY2022	us-gaap	Increase Decrease In Accounts Payable And Other Operating Liabilities IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities	-4071000	usd
CY2021	us-gaap	Increase Decrease In Accounts Payable And Other Operating Liabilities IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities	9779000	usd
CY2020	us-gaap	Increase Decrease In Accounts Payable And Other Operating Liabilities IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities	-5643000	usd
CY2022	mmi	Increase Decrease In Income Taxes Receivable Payable IncreaseDecreaseInIncomeTaxesReceivablePayable	26535000	usd
CY2021	mmi	Increase Decrease In Income Taxes Receivable Payable IncreaseDecreaseInIncomeTaxesReceivablePayable	-14128000	usd
CY2020	mmi	Increase Decrease In Income Taxes Receivable Payable IncreaseDecreaseInIncomeTaxesReceivablePayable	-8724000	usd
CY2022	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-11491000	usd
CY2021	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	29073000	usd
CY2020	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-2095000	usd
CY2022	mmi	Deferred Compensation And Commissions Increase Decrease DeferredCompensationAndCommissionsIncreaseDecrease	-24631000	usd
CY2021	mmi	Deferred Compensation And Commissions Increase Decrease DeferredCompensationAndCommissionsIncreaseDecrease	75047000	usd
CY2020	mmi	Deferred Compensation And Commissions Increase Decrease DeferredCompensationAndCommissionsIncreaseDecrease	6421000	usd
CY2022	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-21176000	usd
CY2021	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-21276000	usd
CY2020	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-18461000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	2528000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-2370000	usd
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	6642000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	13629000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	255903000	usd
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	38088000	usd
CY2022	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	12500000	usd
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	-229000	usd
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	16298000	usd
CY2022	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	380799000	usd
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	378106000	usd
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	215606000	usd
CY2022	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	350993000	usd
CY2021	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	285628000	usd
CY2020	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	221677000	usd
CY2022	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	0	usd
CY2021	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	9500000	usd
CY2020	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	0	usd
CY2022	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	74000	usd
CY2021	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	40000	usd
CY2020	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	243000	usd
CY2022	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	71000	usd
CY2021	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	290000	usd
CY2020	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	187000	usd
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	11666000	usd
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	6857000	usd
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	6945000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-53975000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-108356000	usd
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-17228000	usd
CY2022	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	9741000	usd
CY2021	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	3352000	usd
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2023000	usd
CY2022	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans	709000	usd
CY2021	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans	653000	usd
CY2020	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans	642000	usd
CY2022	us-gaap	Payments Of Dividends PaymentsOfDividends	60358000	usd
CY2021	us-gaap	Payments Of Dividends PaymentsOfDividends	0	usd
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	0	usd
CY2022	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	0	usd
CY2021	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	0	usd
CY2020	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	6564000	usd
CY2022	mmi	Payments On Stock Appreciation Rights PaymentsOnStockAppreciationRights	1761000	usd
CY2021	mmi	Payments On Stock Appreciation Rights PaymentsOnStockAppreciationRights	1481000	usd
CY2020	mmi	Payments On Stock Appreciation Rights PaymentsOnStockAppreciationRights	1251000	usd
CY2022	mmi	Principal Payments On Deferred And Contingent Consideration PrincipalPaymentsOnDeferredAndContingentConsideration	5351000	usd
CY2021	mmi	Principal Payments On Deferred And Contingent Consideration PrincipalPaymentsOnDeferredAndContingentConsideration	1739000	usd
CY2020	mmi	Principal Payments On Deferred And Contingent Consideration PrincipalPaymentsOnDeferredAndContingentConsideration	1134000	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	29053000	usd
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	usd
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-105555000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-5919000	usd
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-10330000	usd
CY2022	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-366000	usd
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-2640000	usd
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-48000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-146267000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	138988000	usd
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	10482000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	382140000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	243152000	usd
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	232670000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	235873000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	382140000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	243152000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	614000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	749000	usd
CY2020	us-gaap	Interest Paid Net InterestPaidNet	1223000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	69847000	usd
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	48563000	usd
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	7329000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	21770000	usd
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	23662000	usd
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	21131000	usd
CY2022	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	684000	usd
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	406000	usd
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	154000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	27027000	usd
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	19981000	usd
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	16293000	usd
CY2022	mmi	Issuance Of Stock For The Settlement Of Deferred Consideration IssuanceOfStockForTheSettlementOfDeferredConsideration	1417000	usd
CY2021	mmi	Issuance Of Stock For The Settlement Of Deferred Consideration IssuanceOfStockForTheSettlementOfDeferredConsideration	1000000	usd
CY2020	mmi	Issuance Of Stock For The Settlement Of Deferred Consideration IssuanceOfStockForTheSettlementOfDeferredConsideration	0	usd
CY2022	mmi	Number Of Office NumberOfOffice	81	office
CY2022	mmi	Percentage Of Common Stock Distributed PercentageOfCommonStockDistributed	0.800
CY2022	us-gaap	Guarantee Obligations Liquidation Proceeds Percentage GuaranteeObligationsLiquidationProceedsPercentage	0.167
CY2022	us-gaap	Property Plant And Equipment Depreciation Methods PropertyPlantAndEquipmentDepreciationMethods	straight-line
CY2022	us-gaap	Advertising Expense AdvertisingExpense	1653000	usd
CY2021	us-gaap	Advertising Expense AdvertisingExpense	830000	usd
CY2020	us-gaap	Advertising Expense AdvertisingExpense	586000	usd
CY2022	mmi	Income Tax Benefit Recognition Criteria Percentage Threshold IncomeTaxBenefitRecognitionCriteriaPercentageThreshold	0.50
CY2022	us-gaap	Use Of Estimates UseOfEstimates	Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the related disclosures at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.
CY2022	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-top:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Concentrations of Credit Risk </span></div><div style="margin-top:6pt;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Financial instruments that potentially subject the Company to a concentration of credit risk principally consist of cash, cash equivalents, and restricted cash, investments in marketable debt securities, available-for-sale, security deposits (included under other assets, non-current) and commissions receivable, net. Cash, cash equivalents, and restricted cash are placed with high-credit quality financial institutions and invested in high-credit quality money market funds and commercial paper. Concentrations and ratings of marketable debt securities, available-for-sale are limited by the approved investment policy. </span></div><div style="margin-top:12pt;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">To reduce its credit risk, the Company monitors the credit standing of the financial institutions money market funds that represent amounts recorded as cash, cash equivalents, and restricted cash. The Company historically has not experienced any significant losses related to cash, cash equivalents, and restricted cash. </span></div>The Company has entered into a Strategic Alliance with MTRCC pursuant to which the Company has agreed to provide loan opportunities that may be funded through MTRCC’s Delegated Underwriting and Servicing Agreement (“DUS Agreement”) with Fannie Mae that requires MTRCC to guarantee a portion of each loan funded. On a loan-by-loan basis, the Company, at its option, can indemnify a portion of MTRCC’s guarantee obligation of loan opportunities presented to and closed by MTRCC though the DUS Agreement. The Company manages and limits the concentration of risk related to the guarantees assumed by monitoring the underlying property type, geographic location, credit of the borrowers, underlying debt service coverage, and loan to value ratios.The Company derives its revenue from a broad range of real estate investors, owners, and users in the United States and Canada, none of which individually represents a significant concentration of credit risk. The Company maintains allowances, as needed, for estimated credit losses based on management’s assessment of the likelihood of collection. For the years ended December 31, 2022, 2021, and 2020, no transaction represented 10% or more of total revenue. Further, while one or more transactions may represent 10% or more of commissions receivable at any reporting date, amounts due are typically collected within 10 days of settlement and, therefore, do not expose the Company to significant credit risk.
CY2022	mmi	Period Of Settlement For Receivable Balances PeriodOfSettlementForReceivableBalances	P10D
CY2022	us-gaap	Number Of Reporting Units NumberOfReportingUnits	1	segment
CY2022	us-gaap	Finite Lived Intangible Assets Amortization Method FiniteLivedIntangibleAssetsAmortizationMethod	straight-line
CY2022Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	41426000	usd
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	35138000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	27644000	usd
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	23192000	usd
CY2022	mmi	Fully Depreciated Computer Software Hardware And Furniture Fixtures And Equipment Writeoff FullyDepreciatedComputerSoftwareHardwareAndFurnitureFixturesAndEquipmentWriteoff	1200000	usd
CY2021	mmi	Fully Depreciated Computer Software Hardware And Furniture Fixtures And Equipment Writeoff FullyDepreciatedComputerSoftwareHardwareAndFurnitureFixturesAndEquipmentWriteoff	3200000	usd
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	26038000	usd
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	26209000	usd
CY2022	us-gaap	Variable Lease Cost VariableLeaseCost	5586000	usd
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	5371000	usd
CY2022	us-gaap	Sublease Income SubleaseIncome	896000	usd
CY2021	us-gaap	Sublease Income SubleaseIncome	492000	usd
CY2022	us-gaap	Lease Cost LeaseCost	30728000	usd
CY2021	us-gaap	Lease Cost LeaseCost	31088000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	19663000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	19791000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	17220000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	13446000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	8640000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	11974000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	90734000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	8641000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	82093000	usd
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y11M19D
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y6M25D
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.039
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.029
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	209028000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	3501000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	79003000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	2007000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	288031000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	5508000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	221957000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	503000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	146000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	8000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	222103000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	511000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	113000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	221000	usd
CY2020	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	241000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	27000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	2000	usd
CY2020	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	49000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	254683000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	253434000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	183915000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	183868000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	56507000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	54169000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	96035000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	96257000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	13435000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	11850000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	11129000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	11601000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	2876000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	2576000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	4694000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	4752000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	327501000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	322029000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	295773000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	296478000	usd
CY2022	mmi	Available For Sale Securities Weighted Average Maturity AvailableForSaleSecuritiesWeightedAverageMaturity	P1Y1M6D
CY2021	mmi	Available For Sale Securities Weighted Average Maturity AvailableForSaleSecuritiesWeightedAverageMaturity	P1Y6M
CY2022	us-gaap	Number Of Reporting Units NumberOfReportingUnits	1	reportingunit
CY2022Q4	us-gaap	Goodwill Gross GoodwillGross	37914000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	37914000	usd
CY2021Q4	us-gaap	Goodwill Gross GoodwillGross	34071000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	34071000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	32287000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	14505000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	17782000	usd
CY2021Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	23974000	usd
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	9940000	usd
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	14034000	usd
CY2022Q4	mmi	Intangible Assets Gross Including Goodwill IntangibleAssetsGrossIncludingGoodwill	70201000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	14505000	usd
CY2022Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	55696000	usd
CY2021Q4	mmi	Intangible Assets Gross Including Goodwill IntangibleAssetsGrossIncludingGoodwill	58045000	usd
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	9940000	usd
CY2021Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	48105000	usd
CY2022	us-gaap	Acquired Finite Lived Intangible Assets Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife	P4Y6M14D
CY2021	us-gaap	Acquired Finite Lived Intangible Assets Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife	P5Y6M10D
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4700000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3800000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	34071000	usd
CY2020Q4	us-gaap	Goodwill Goodwill	33375000	usd
CY2022	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	3843000	usd
CY2021	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	696000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	37914000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	34071000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Rolling Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextRollingTwelveMonths	4599000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	4089000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	3871000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	2156000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1736000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	1331000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	17782000	usd
CY2021Q4	mmi	Advances And Loans Allowance For Credit Losses AdvancesAndLoansAllowanceForCreditLosses	789000	usd
CY2021Q4	mmi	Commission Receivable Allowance For Credit Loss CommissionReceivableAllowanceForCreditLoss	5000	usd
CY2021Q4	mmi	Advances And Loans And Commissions Receivable Allowance For Credit Loss AdvancesAndLoansAndCommissionsReceivableAllowanceForCreditLoss	794000	usd
CY2022	mmi	Credit Loss Recovery Expense Reversal For Advances And Loans CreditLossRecoveryExpenseReversalForAdvancesAndLoans	-48000	usd
CY2022	mmi	Credit Loss Recovery Expense Reversal For Commission Receivable CreditLossRecoveryExpenseReversalForCommissionReceivable	-4000	usd
CY2022	mmi	Credit Loss Recovery Expense Reversal For Advances And Loans And Commissions Receivable CreditLossRecoveryExpenseReversalForAdvancesAndLoansAndCommissionsReceivable	-52000	usd
CY2022	mmi	Advances And Loans Allowance For Credit Losses Write Offs Recoveries AdvancesAndLoansAllowanceForCreditLossesWriteOffsRecoveries	50000	usd
CY2022	mmi	Commissions Receivable Allowances For Credit Losses Write Offs CommissionsReceivableAllowancesForCreditLossesWriteOffs	0	usd
CY2022	mmi	Advances And Loans And Commissions Receivable Allowances For Credit Losses Write Offs AdvancesAndLoansAndCommissionsReceivableAllowancesForCreditLossesWriteOffs	50000	usd
CY2022Q4	mmi	Advances And Loans Allowance For Credit Losses AdvancesAndLoansAllowanceForCreditLosses	791000	usd
CY2022Q4	mmi	Commission Receivable Allowance For Credit Loss CommissionReceivableAllowanceForCreditLoss	1000	usd
CY2022Q4	mmi	Advances And Loans And Commissions Receivable Allowance For Credit Loss AdvancesAndLoansAndCommissionsReceivableAllowanceForCreditLoss	792000	usd
CY2020Q4	mmi	Advances And Loans Allowance For Credit Losses AdvancesAndLoansAllowanceForCreditLosses	563000	usd
CY2021	mmi	Credit Loss Recovery Expense Reversal For Advances And Loans CreditLossRecoveryExpenseReversalForAdvancesAndLoans	255000	usd
CY2021	mmi	Credit Loss Recovery Expense Reversal For Commission Receivable CreditLossRecoveryExpenseReversalForCommissionReceivable	-89000	usd
CY2021	mmi	Credit Loss Recovery Expense Reversal For Advances And Loans And Commissions Receivable CreditLossRecoveryExpenseReversalForAdvancesAndLoansAndCommissionsReceivable	166000	usd
CY2021	mmi	Advances And Loans Allowance For Credit Losses Write Offs Recoveries AdvancesAndLoansAllowanceForCreditLossesWriteOffsRecoveries	-29000	usd
CY2021	mmi	Commissions Receivable Allowances For Credit Losses Write Offs CommissionsReceivableAllowancesForCreditLossesWriteOffs	0	usd
CY2021	mmi	Advances And Loans And Commissions Receivable Allowances For Credit Losses Write Offs AdvancesAndLoansAndCommissionsReceivableAllowancesForCreditLossesWriteOffs	-29000	usd
CY2021Q4	mmi	Advances And Loans Allowance For Credit Losses AdvancesAndLoansAllowanceForCreditLosses	789000	usd
CY2021Q4	mmi	Commission Receivable Allowance For Credit Loss CommissionReceivableAllowanceForCreditLoss	5000	usd
CY2021Q4	mmi	Advances And Loans And Commissions Receivable Allowance For Credit Loss AdvancesAndLoansAndCommissionsReceivableAllowanceForCreditLoss	794000	usd
CY2022Q4	us-gaap	Other Assets Current OtherAssetsCurrent	7282000	usd
CY2021Q4	us-gaap	Other Assets Current OtherAssetsCurrent	5270000	usd
CY2022Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	15859000	usd
CY2021Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	13146000	usd
CY2022	mmi	Treasury Note Rate Term TreasuryNoteRateTerm	P1Y
CY2021Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	1855000	usd
CY2020Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	1897000	usd
CY2022	us-gaap	Servicing Asset At Amortized Value Additions ServicingAssetAtAmortizedValueAdditions	0	usd
CY2021	us-gaap	Servicing Asset At Amortized Value Additions ServicingAssetAtAmortizedValueAdditions	483000	usd
CY2022	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	1275000	usd
CY2021	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	525000	usd
CY2022	mmi	Servicing Asset At Amortized Cost Reclassification To Assets Held For Sale ServicingAssetAtAmortizedCostReclassificationToAssetsHeldForSale	280000	usd
CY2021	mmi	Servicing Asset At Amortized Cost Reclassification To Assets Held For Sale ServicingAssetAtAmortizedCostReclassificationToAssetsHeldForSale	0	usd
CY2022	mmi	Gross Gain Loss On Servicing Asset On Disposals GrossGainLossOnServicingAssetOnDisposals	-300000	usd
CY2021	mmi	Gross Gain Loss On Servicing Asset On Disposals GrossGainLossOnServicingAssetOnDisposals	0	usd
CY2022Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	0	usd
CY2021Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	1855000	usd
CY2022Q4	mmi	Stock Appreciation Rights Liability Current StockAppreciationRightsLiabilityCurrent	2323000	usd
CY2021Q4	mmi	Stock Appreciation Rights Liability Current StockAppreciationRightsLiabilityCurrent	2241000	usd
CY2022Q4	mmi	Stock Appreciation Rights Liability Noncurrent StockAppreciationRightsLiabilityNoncurrent	13137000	usd
CY2021Q4	mmi	Stock Appreciation Rights Liability Noncurrent StockAppreciationRightsLiabilityNoncurrent	14918000	usd
CY2022Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	72247000	usd
CY2021Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	110769000	usd
CY2022Q4	mmi	Accrued Sales Commission Non Current AccruedSalesCommissionNonCurrent	45156000	usd
CY2021Q4	mmi	Accrued Sales Commission Non Current AccruedSalesCommissionNonCurrent	31697000	usd
CY2022Q4	us-gaap	Deferred Compensation Cash Based Arrangements Liability Current DeferredCompensationCashBasedArrangementsLiabilityCurrent	493000	usd
CY2021Q4	us-gaap	Deferred Compensation Cash Based Arrangements Liability Current DeferredCompensationCashBasedArrangementsLiabilityCurrent	1080000	usd
CY2022Q4	us-gaap	Deferred Compensation Cashbased Arrangements Liability Classified Noncurrent DeferredCompensationCashbasedArrangementsLiabilityClassifiedNoncurrent	6168000	usd
CY2021Q4	us-gaap	Deferred Compensation Cashbased Arrangements Liability Classified Noncurrent DeferredCompensationCashbasedArrangementsLiabilityClassifiedNoncurrent	6921000	usd
CY2022Q4	us-gaap	Other Deferred Compensation Arrangements Liability Current OtherDeferredCompensationArrangementsLiabilityCurrent	258000	usd
CY2021Q4	us-gaap	Other Deferred Compensation Arrangements Liability Current OtherDeferredCompensationArrangementsLiabilityCurrent	595000	usd
CY2022Q4	us-gaap	Other Deferred Compensation Arrangements Liability Classified Noncurrent OtherDeferredCompensationArrangementsLiabilityClassifiedNoncurrent	0	usd
CY2021Q4	us-gaap	Other Deferred Compensation Arrangements Liability Classified Noncurrent OtherDeferredCompensationArrangementsLiabilityClassifiedNoncurrent	0	usd
CY2022Q4	mmi	Deferred Compensation And Commissions Current DeferredCompensationAndCommissionsCurrent	75321000	usd
CY2021Q4	mmi	Deferred Compensation And Commissions Current DeferredCompensationAndCommissionsCurrent	114685000	usd
CY2022Q4	mmi	Deferred Compensation And Commissions Non Current DeferredCompensationAndCommissionsNonCurrent	64461000	usd
CY2021Q4	mmi	Deferred Compensation And Commissions Non Current DeferredCompensationAndCommissionsNonCurrent	53536000	usd
CY2022	mmi	Increase Decrease In Carrying Value Of Assets Held In Rabbi Trust IncreaseDecreaseInCarryingValueOfAssetsHeldInRabbiTrust	-1743000	usd
CY2021	mmi	Increase Decrease In Carrying Value Of Assets Held In Rabbi Trust IncreaseDecreaseInCarryingValueOfAssetsHeldInRabbiTrust	1445000	usd
CY2020	mmi	Increase Decrease In Carrying Value Of Assets Held In Rabbi Trust IncreaseDecreaseInCarryingValueOfAssetsHeldInRabbiTrust	1042000	usd
CY2022	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	1743000	usd
CY2021	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	-1104000	usd
CY2020	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	-799000	usd
CY2022Q4	mmi	Deferred Consideration Liabilities Current DeferredConsiderationLiabilitiesCurrent	3633000	usd
CY2021Q4	mmi	Deferred Consideration Liabilities Current DeferredConsiderationLiabilitiesCurrent	5112000	usd
CY2022Q4	mmi	Deferred Consideration Liabilities Noncurrent DeferredConsiderationLiabilitiesNoncurrent	1486000	usd
CY2022Q4	mmi	Deferred Consideration Liabilities Noncurrent DeferredConsiderationLiabilitiesNoncurrent	1486000	usd
CY2021Q4	mmi	Deferred Consideration Liabilities Noncurrent DeferredConsiderationLiabilitiesNoncurrent	4689000	usd
CY2022Q4	us-gaap	Business Combination Contingent Consideration Liability Current BusinessCombinationContingentConsiderationLiabilityCurrent	1726000	usd
CY2021Q4	us-gaap	Business Combination Contingent Consideration Liability Current BusinessCombinationContingentConsiderationLiabilityCurrent	2681000	usd
CY2021Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	8784000	usd
CY2022Q4	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	5341000	usd
CY2022Q4	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	5341000	usd
CY2021Q4	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	6631000	usd
CY2022Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	612000	usd
CY2021Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	0	usd
CY2022Q4	mmi	Dividends Payable Noncurrent DividendsPayableNoncurrent	1603000	usd
CY2021Q4	mmi	Dividends Payable Noncurrent DividendsPayableNoncurrent	0	usd
CY2022Q4	mmi	Stock Repurchase Payable Current StockRepurchasePayableCurrent	565000	usd
CY2021Q4	mmi	Stock Repurchase Payable Current StockRepurchasePayableCurrent	0	usd
CY2022Q4	mmi	Stock Repurchase Payable Noncurrent StockRepurchasePayableNoncurrent	0	usd
CY2021Q4	mmi	Stock Repurchase Payable Noncurrent StockRepurchasePayableNoncurrent	0	usd
CY2022Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	3397000	usd
CY2021Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	991000	usd
CY2022Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	184000	usd
CY2021Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	74000	usd
CY2022Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	9933000	usd
CY2022Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	8614000	usd
CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	11394000	usd
CY2022Q4	us-gaap	Due From Employees DueFromEmployees	4000	usd
CY2021Q4	us-gaap	Due From Employees DueFromEmployees	40000	usd
CY2022Q4	mmi	Deferred Consideration Liabilities Current Noncurrent DeferredConsiderationLiabilitiesCurrentNoncurrent	5119000	usd
CY2021Q4	mmi	Deferred Consideration Liabilities Current Noncurrent DeferredConsiderationLiabilitiesCurrentNoncurrent	9801000	usd
CY2022Q4	us-gaap	Deferred Compensation Cashbased Arrangements Liability Current And Noncurrent DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent	6661000	usd
CY2021Q4	us-gaap	Deferred Compensation Cashbased Arrangements Liability Current And Noncurrent DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent	8001000	usd
CY2022	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet	0	usd
CY2022Q4	mmi	Business Combination Contingent Deferred Consideration Arrangements Range Of Outcomes Value High BusinessCombinationContingentDeferredConsiderationArrangementsRangeOfOutcomesValueHigh	21300000	usd
CY2021Q4	mmi	Business Combination Contingent Deferred Consideration Arrangements Range Of Outcomes Value High BusinessCombinationContingentDeferredConsiderationArrangementsRangeOfOutcomesValueHigh	28600000	usd
CY2021Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	39255838	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	39255838	shares
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	39692373	shares
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	39692373	shares
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2021Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2022Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.25
CY2022Q1	mmi	Common Stock Special Dividends Per Share Cash Paid CommonStockSpecialDividendsPerShareCashPaid	1.00
CY2022Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.25
CY2022	us-gaap	Payments Of Dividends PaymentsOfDividends	60400000	usd
CY2022Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	2200000	usd
CY2022Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	2200000	usd
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	25000000	shares
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	25000000	shares
CY2021Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
CY2022Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2022Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2021Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2022Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	0	usd
CY2021Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	0	usd
CY2022Q3	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	70000000	usd
CY2022	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	864271	shares
CY2022	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	29600000	usd
CY2022	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	34.27
CY2022Q4	mmi	Stock Repurchase Program Shares Repurchased But Not Settled Amount StockRepurchaseProgramSharesRepurchasedButNotSettledAmount	600000	usd
CY2022Q4	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	40400000	usd
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	3806730	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	800075	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	33.91
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	434705	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	32.80
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	284503	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	32.74
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	31898	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	34.49
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	918379	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	33.73
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	381215	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	39.03
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	277253	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	31.89
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	41405	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	33.47
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	980936	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	36.32
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	1094507	shares
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	45.41
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	306276	shares
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	35.49
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	27706	shares
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	39.11
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1741461	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	42.14
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	17312000	usd
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10361000	usd
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9905000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	142029000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	193303000	usd
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	59364000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	34968000	usd
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	48785000	usd
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	12437000	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-4973000	usd
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-9600000	usd
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	310000	usd
CY2022	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	29995000	usd
CY2021	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	39185000	usd
CY2020	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	12747000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	8857000	usd
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	13903000	usd
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3616000	usd
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1100000	usd
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-2243000	usd
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	163000	usd
CY2022	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	7757000	usd
CY2021	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	11660000	usd
CY2020	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	3779000	usd
CY2022	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	0	usd
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	0	usd
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	0	usd
CY2022	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	52000	usd
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-12000	usd
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	0	usd
CY2022	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	52000	usd
CY2021	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	-12000	usd
CY2020	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	0	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	37804000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	50833000	usd
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16526000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	6406000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	6822000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	9655000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	6989000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	21018000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	18287000	usd
CY2022Q4	mmi	Deferred Tax Assets Operating Lease Rou Assets Net DeferredTaxAssetsOperatingLeaseRouAssetsNet	20798000	usd
CY2021Q4	mmi	Deferred Tax Assets Operating Lease Rou Assets Net DeferredTaxAssetsOperatingLeaseRouAssetsNet	20937000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	7273000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	7031000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	3835000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	3769000	usd
CY2022Q4	mmi	Deferred Tax Assets State Taxes Net DeferredTaxAssetsStateTaxesNet	0	usd
CY2021Q4	mmi	Deferred Tax Assets State Taxes Net DeferredTaxAssetsStateTaxesNet	92000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Other Comprehensive Loss DeferredTaxAssetsOtherComprehensiveLoss	1676000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Other Comprehensive Loss DeferredTaxAssetsOtherComprehensiveLoss	0	usd
CY2022Q4	mmi	Deferred Tax Assets Amortizable Intangibles And Other DeferredTaxAssetsAmortizableIntangiblesAndOther	2221000	usd
CY2021Q4	mmi	Deferred Tax Assets Amortizable Intangibles And Other DeferredTaxAssetsAmortizableIntangiblesAndOther	1577000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	72882000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	65504000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	4935000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	4599000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	67947000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	60905000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	5715000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	6552000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	18523000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	18697000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	1180000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	1513000	usd
CY2022Q4	mmi	Deferred Tax Liabilities State Taxes DeferredTaxLiabilitiesStateTaxes	472000	usd
CY2021Q4	mmi	Deferred Tax Liabilities State Taxes DeferredTaxLiabilitiesStateTaxes	0	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Other Comprehensive Income DeferredTaxLiabilitiesOtherComprehensiveIncome	0	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Other Comprehensive Income DeferredTaxLiabilitiesOtherComprehensiveIncome	195000	usd
CY2022Q4	mmi	Deferred Tax Liabilities Goodwill And Other DeferredTaxLiabilitiesGoodwillAndOther	736000	usd
CY2021Q4	mmi	Deferred Tax Liabilities Goodwill And Other DeferredTaxLiabilitiesGoodwillAndOther	212000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	26626000	usd
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	27169000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	41321000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	33736000	usd
CY2022Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	14200000	usd
CY2021Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	14700000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	4900000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	4600000	usd
CY2022	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	337000	usd
CY2021	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	179000	usd
CY2020	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	497000	usd
CY2022	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	29826000	usd
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	40594000	usd
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	12466000	usd
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2022	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	6127000	usd
CY2022	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.043
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	9210000	usd
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.048
CY2021	mmi	Income Tax Reconciliation Permanent And Other Items IncomeTaxReconciliationPermanentAndOtherItems	1405000	usd
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2983000	usd
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.050
CY2022	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-2714000	usd
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.019
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-555000	usd
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.003
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	240000	usd
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.004
CY2022	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	337000	usd
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.002
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	179000	usd
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.001
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	497000	usd
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.008
CY2022	mmi	Income Tax Reconciliation Permanent And Other Items IncomeTaxReconciliationPermanentAndOtherItems	4228000	usd
CY2022	mmi	Effective Income Tax Rate On Permanent And Other Items EffectiveIncomeTaxRateOnPermanentAndOtherItems	0.030
CY2021	mmi	Effective Income Tax Rate On Permanent And Other Items EffectiveIncomeTaxRateOnPermanentAndOtherItems	0.007
CY2020	mmi	Income Tax Reconciliation Permanent And Other Items IncomeTaxReconciliationPermanentAndOtherItems	340000	usd
CY2020	mmi	Effective Income Tax Rate On Permanent And Other Items EffectiveIncomeTaxRateOnPermanentAndOtherItems	0.006
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	37804000	usd
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.266
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	50833000	usd
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.263
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16526000	usd
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.278
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	304000	usd
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	55000	usd
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	775000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	304000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1000	usd
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	usd
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	usd
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	304000	usd
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	usd
CY2022	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	usd
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	56000	usd
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	720000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	304000	usd
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	55000	usd
CY2022Q4	us-gaap	Decrease In Unrecognized Tax Benefits Is Reasonably Possible DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible	304000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense	0	usd
CY2021	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense	0	usd
CY2022Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	0	usd
CY2020	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	39318000	shares
CY2022	us-gaap	Net Income Loss NetIncomeLoss	104225000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	142470000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	42838000	usd
CY2022	mmi	Change In Value Deferred Consideration Settled In Stock ChangeInValueDeferredConsiderationSettledInStock	37000	usd
CY2021	mmi	Change In Value Deferred Consideration Settled In Stock ChangeInValueDeferredConsiderationSettledInStock	-27000	usd
CY2020	mmi	Change In Value Deferred Consideration Settled In Stock ChangeInValueDeferredConsiderationSettledInStock	3000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	104188000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	142497000	usd
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	42835000	usd
CY2022	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	39751000	shares
CY2021	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	39575000	shares
CY2022	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	12000	shares
CY2021	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	14000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	18000	shares
CY2022	us-gaap	Weighted Average Number Of Shares Contingently Issuable WeightedAverageNumberOfSharesContingentlyIssuable	154000	shares
CY2021	us-gaap	Weighted Average Number Of Shares Contingently Issuable WeightedAverageNumberOfSharesContingentlyIssuable	327000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Contingently Issuable WeightedAverageNumberOfSharesContingentlyIssuable	342000	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39893000	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39888000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39642000	shares
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.61
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.57
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.08
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39893000	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39888000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39642000	shares
CY2022	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	207000	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	206000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	67000	shares
CY2022	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	86000	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	93000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	26000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	40186000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	40187000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	39735000	shares
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.59
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.55
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.08
CY2022	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1084000	shares
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	366000	shares
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	684000	shares
CY2022Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	55700000	usd
CY2022Q4	mmi	Maximum Unpaid Loan Amount For Which Guarantee Obligations Granted MaximumUnpaidLoanAmountForWhichGuaranteeObligationsGranted	334000000	usd
CY2022Q4	mmi	Guarantor Obligations Allowance For Loss Sharing Obligations GuarantorObligationsAllowanceForLossSharingObligations	275000	usd
CY2022Q4	mmi	Guarantor Obligations Amount Pledged GuarantorObligationsAmountPledged	15800	usd
CY2022Q4	us-gaap	Other Commitment OtherCommitment	16100000	usd

Files In Submission

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Marcus & Millichap, Inc. Stock $mmi

2023 Q1 Form 10-K Financial Statement

#000157873223000013 Filed on February 28, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MMI Marcus & Millichap, Inc. Stock $mmi

2023 Q1 Form 10-K Financial Statement

#000157873223000013 Filed on February 28, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MMI
Marcus & Millichap, Inc. Stock $mmi