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    ACCESSION NUMBER:		0001104659-20-138612
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		15
    CONFORMED PERIOD OF REPORT:	20201221
    ITEM INFORMATION:		Entry into a Material Definitive Agreement
    ITEM INFORMATION:		Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
    ITEM INFORMATION:		Unregistered Sales of Equity Securities
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20201222
    DATE AS OF CHANGE:		20201222

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			MDC PARTNERS INC
    		CENTRAL INDEX KEY:			0000876883
    		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-ADVERTISING AGENCIES [7311]
    		IRS NUMBER:				980364441
    		STATE OF INCORPORATION:			A6
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-13718
    		FILM NUMBER:		201408560

    	BUSINESS ADDRESS:
    		STREET 1:		ONE WORLD TRADE CENTER, FLOOR 65
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10007
    		BUSINESS PHONE:		646 429 1800

    	MAIL ADDRESS:
    		STREET 1:		ONE WORLD TRADE CENTER, FLOOR 65
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10007

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	MDC CORP INC
    		DATE OF NAME CHANGE:	20001204

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	MDC COMMUNICATIONS CORP
    		DATE OF NAME CHANGE:	19961028

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	MDC CORPORATION
    		DATE OF NAME CHANGE:	19950419
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    <SEQUENCE>1
    <FILENAME>tm2038803d6_8k.htm
    <DESCRIPTION>FORM 8-K
    <TEXT>
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    <DOCUMENT>
    <TYPE>EX-2.1
    <SEQUENCE>2
    <FILENAME>tm2038803d6_ex2-1.htm
    <DESCRIPTION>EXHIBIT 2.1
    <TEXT>
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    <TYPE>EX-10.1
    <SEQUENCE>3
    <FILENAME>tm2038803d6_ex10-1.htm
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    <TYPE>EX-101.SCH
    <SEQUENCE>5
    <FILENAME>mdca-20201221.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
    <TEXT>
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    <TYPE>EX-101.LAB
    <SEQUENCE>6
    <FILENAME>mdca-20201221_lab.xml
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    <SEQUENCE>9
    <FILENAME>R1.htm
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    <TEXT>
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    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>10
    <FILENAME>Financial_Report.xlsx
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    <TEXT>
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    <TYPE>XML
    <SEQUENCE>11
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    <SEQUENCE>12
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    <TEXT>
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    <TYPE>XML
    <SEQUENCE>13
    <FILENAME>FilingSummary.xml
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    <TEXT>
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    <TYPE>JSON
    <SEQUENCE>15
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    <TEXT>
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    <SEQUENCE>16
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