Label	Element	Value
Increase (Decrease) in Redemption Value of Redeemable Noncontrolling Interests	mdca_IncreaseDecreaseinRedemptionValueofRedeemableNoncontrollingInterests	$ (1,687,000)
Increase (Decrease) in Redemption Value of Redeemable Noncontrolling Interests	mdca_IncreaseDecreaseinRedemptionValueofRedeemableNoncontrollingInterests	(2,062,000)
Increase (Decrease) in Redemption Value of Redeemable Noncontrolling Interests	mdca_IncreaseDecreaseinRedemptionValueofRedeemableNoncontrollingInterests	(3,190,000)
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0
Stock Repurchased and Retired During Period, Value	us-gaap_StockRepurchasedAndRetiredDuringPeriodValue	493,000
Stock Repurchased and Retired During Period, Value	us-gaap_StockRepurchasedAndRetiredDuringPeriodValue	22,000
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2,107,000
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4,324,000
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1,800,000
Parent [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification	0
Increase (Decrease) in Redemption Value of Redeemable Noncontrolling Interests	mdca_IncreaseDecreaseinRedemptionValueofRedeemableNoncontrollingInterests	(1,687,000)
Increase (Decrease) in Redemption Value of Redeemable Noncontrolling Interests	mdca_IncreaseDecreaseinRedemptionValueofRedeemableNoncontrollingInterests	(2,062,000)
Increase (Decrease) in Redemption Value of Redeemable Noncontrolling Interests	mdca_IncreaseDecreaseinRedemptionValueofRedeemableNoncontrollingInterests	(3,190,000)
Other Comprehensive Income (Loss), Net of Tax	us-gaap_OtherComprehensiveIncomeLossNetOfTax	(943,000)
Other Comprehensive Income (Loss), Net of Tax	us-gaap_OtherComprehensiveIncomeLossNetOfTax	2,435,000
Other Comprehensive Income (Loss), Net of Tax	us-gaap_OtherComprehensiveIncomeLossNetOfTax	(1,423,000)
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	us-gaap_MinorityInterestDecreaseFromRedemptions	0
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	us-gaap_MinorityInterestDecreaseFromRedemptions	1,166,000
Stock Issued During Period, Value, New Issues	us-gaap_StockIssuedDuringPeriodValueNewIssues	991,000
Stock Issued During Period, Value, Convertible Preferred Shares	mdca_StockIssuedDuringPeriodValueConvertiblePreferredShares	(97,000)
Stock Repurchased and Retired During Period, Value	us-gaap_StockRepurchasedAndRetiredDuringPeriodValue	493,000
Stock Repurchased and Retired During Period, Value	us-gaap_StockRepurchasedAndRetiredDuringPeriodValue	22,000
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2,107,000
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4,324,000
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1,800,000
Retained Earnings [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification	$ (1,170,000)
Common Stock [Member]
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	12,585
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	122,029
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	76,979
Stock Repurchased and Retired During Period, Shares	us-gaap_StockRepurchasedAndRetiredDuringPeriodShares	6,185
Stock Repurchased and Retired During Period, Shares	us-gaap_StockRepurchasedAndRetiredDuringPeriodShares	54,693
Stock Repurchased and Retired During Period, Shares	us-gaap_StockRepurchasedAndRetiredDuringPeriodShares	19,257
Stock Issued During Period, Shares, New Issues	us-gaap_StockIssuedDuringPeriodSharesNewIssues	0
Additional Paid-in Capital [Member]
Increase (Decrease) in Redemption Value of Redeemable Noncontrolling Interests	mdca_IncreaseDecreaseinRedemptionValueofRedeemableNoncontrollingInterests	$ (1,687,000)
Increase (Decrease) in Redemption Value of Redeemable Noncontrolling Interests	mdca_IncreaseDecreaseinRedemptionValueofRedeemableNoncontrollingInterests	(2,062,000)
Increase (Decrease) in Redemption Value of Redeemable Noncontrolling Interests	mdca_IncreaseDecreaseinRedemptionValueofRedeemableNoncontrollingInterests	(3,190,000)
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	us-gaap_MinorityInterestDecreaseFromRedemptions	0
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	us-gaap_MinorityInterestDecreaseFromRedemptions	1,166,000
Adjustments to Additional Paid in Capital, Changes due to Business Combinations	mdca_AdjustmentstoAdditionalPaidinCapitalChangesduetoBusinessCombinations	97,000
Stock Repurchased and Retired During Period, Value	us-gaap_StockRepurchasedAndRetiredDuringPeriodValue	493,000
Stock Repurchased and Retired During Period, Value	us-gaap_StockRepurchasedAndRetiredDuringPeriodValue	22,000
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2,107,000
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4,324,000
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1,800,000
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
Other Comprehensive Income (Loss), Net of Tax	us-gaap_OtherComprehensiveIncomeLossNetOfTax	(944,000)
Other Comprehensive Income (Loss), Net of Tax	us-gaap_OtherComprehensiveIncomeLossNetOfTax	2,435,000
Other Comprehensive Income (Loss), Net of Tax	us-gaap_OtherComprehensiveIncomeLossNetOfTax	(1,423,000)
Noncontrolling Interest [Member]
Noncontrolling Interest, Change in Redemption Value	us-gaap_MinorityInterestChangeInRedemptionValue	(5,965,000)
Other Comprehensive Income (Loss), Net of Tax	us-gaap_OtherComprehensiveIncomeLossNetOfTax	(905,000)
Other Comprehensive Income (Loss), Net of Tax	us-gaap_OtherComprehensiveIncomeLossNetOfTax	(2,006,000)
Other Comprehensive Income (Loss), Net of Tax	us-gaap_OtherComprehensiveIncomeLossNetOfTax	38,000
Adjustments to Additional Paid in Capital, Changes due to Business Combinations	mdca_AdjustmentstoAdditionalPaidinCapitalChangesduetoBusinessCombinations	27,357,000
Adjustments to Additional Paid in Capital, Changes due to Business Combinations	mdca_AdjustmentstoAdditionalPaidinCapitalChangesduetoBusinessCombinations	27,357,000
Adjustments to Additional Paid in Capital, Changes due to Business Combinations	mdca_AdjustmentstoAdditionalPaidinCapitalChangesduetoBusinessCombinations	$ 0
Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues	us-gaap_StockIssuedDuringPeriodSharesNewIssues	0
Contingent Consideration, Liability Settlements [Domain]
Stock Issued During Period, Value, Acquisitions	us-gaap_StockIssuedDuringPeriodValueAcquisitions	$ 7,030,000
Stock Issued During Period, Value, Acquisitions	us-gaap_StockIssuedDuringPeriodValueAcquisitions	7,030,000
Contingent Consideration, Liability Settlements [Domain] | Parent [Member]
Stock Issued During Period, Value, Acquisitions	us-gaap_StockIssuedDuringPeriodValueAcquisitions	7,030,000
Stock Issued During Period, Value, Acquisitions	us-gaap_StockIssuedDuringPeriodValueAcquisitions	$ 7,030,000