Debt Instrument, Basis Spread on Variable Rate, Rate Reduction from Amendment

No definition available.

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Balance Type:	na
Period Type:	duration

- Definition

The percentage of the face amount of the debt instrument applicable to the change in ownership.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Debt instrument, percentage of redemption price, redemption date, latest for redemption at face amount

+ References

No definition available.

+ Details

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- Definition

The percentage of the face amount applicable to the first set in the series of latest date, before maturity, on which the issuer can call the outstanding debt instrument for repayment or conversion to equity.

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Percentage Of Redemption Price, Redemption Date Three

+ References

No definition available.

+ Details

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- Definition

The percentage of the face amount applicable to the second set in the series of latest date, before maturity, on which the issuer can call the outstanding debt instrument for repayment or conversion to equity

+ References

No definition available.

+ Details

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- Definition

The percentage of the face amount that can be redeemed, applicable to the additional set in the series of latest date, before maturity, on which the issuer can call the outstanding debt instrument for repayment or conversion to equity.

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Redemption Date, Four

+ References

No definition available.

+ Details

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- Definition

The first set in the series of latest date, before maturity, on which the issuer can call the outstanding debt instrument for repayment or conversion to equity, which may be presented in a variety of ways (year only, month and year, day, month and year, quarter, etc.).

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Redemption Date, Three

+ References

No definition available.

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The second set in the series of latest date, before maturity, on which the issuer can call the outstanding debt instrument for repayment or conversion to equity, which may be presented in a variety of ways (year only, month and year, day, month and year, quarter, etc.).

+ References

No definition available.

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	mdca_DebtLineItems
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Data Type:	xbrli:stringItemType
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Period Type:	duration

- Definition

Outstanding Checks

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 28
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-Paragraph 2
-Subparagraph (SX 210.5-03.8)
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of amortization expense attributable to debt issuance costs.

+ References

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+ Details

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Balance Type:	debit
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- Definition

Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 50
-Paragraph 4
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Balance Type:	debit
Period Type:	duration

- Definition

Amount of minimum lease payments for capital leases.

+ References

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-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of gain (loss) from the difference between the repurchase price of a debt instrument initially issued by the entity and the net carrying amount of the debt at the time of its repurchase.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Description of the terms of a credit facility arrangement. Terms typically include interest rate, collateral required, guarantees required, repayment requirements, and restrictions on use of assets and activities of the entity.

+ References

+ Details

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Period Type:	duration

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of increase (decrease) of the credit facility.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
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Balance Type:	credit
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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Details

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Debt - Textual (Details) - USD ($)					12 Months Ended				37 Months Ended
Debt - Textual (Details) - USD ($)	May 03, 2016	Mar. 23, 2016	Oct. 23, 2014	Mar. 20, 2013	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	May 01, 2019	Dec. 31, 2013
Debt [Line Items]
Capital Leases, Future Minimum Payments Due					$ 706,000	$ 431,000
Interest expense, debt, total					62,001,000	56,468,000	$ 53,090,000
Loss on redemption of Notes					0	(33,298,000)	0
Interest expense amortization of debt premium						(312,000)	(1,178,000)
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability					(4,819,000)	8,227,000	38,887,000
Amortization of financing costs					3,022,000	3,022,000		$ 3,448,000
Letters of credit outstanding, amount					5,056,000	5,056,000
Outstanding Checks					$ 41,989,000	80,193,000
Wells Fargo Capital Finance, LLC
Debt [Line Items]
Line of Credit Facility, Description					On March 20, 2013, MDC, Maxxcom Inc. (a subsidiary of MDC) and each of their subsidiaries party thereto entered into an amended and restated, $225 million senior secured revolving credit agreement due 2018 (the Credit Agreement) with Wells Fargo Capital Finance, LLC, as agent, and the lenders from time to time party thereto. Advances under the Credit Agreement will be used for working capital and general corporate purposes, in each case pursuant to the terms of the Credit Agreement. Capitalized terms used in this section and not otherwise defined have the meanings set forth in the Credit Agreement. Advances under the Credit Agreement bear interest as follows: (a)(i) LIBOR Rate Loans bear interest at the LIBOR Rate and (ii) Base Rate Loans bear interest at the Base Rate, plus (b) an applicable margin. The initial applicable margin for borrowing is 1.25% in the case of Base Rate Loans and 2.00% in the case of LIBOR Rate Loans. In addition to paying interest on outstanding principal under the Credit Agreement, MDC is required to pay an unused revolver fee to lenders under the Credit Agreement in respect of unused commitments thereunder.
Debt instrument, maturity date	May 03, 2021		Sep. 30, 2019
Six Point Five Zero Percentage Notes [Domain]
Debt [Line Items]
Debt instrument, percentage redeemable redemption date, additional					106.50%
Stated interest rate		6.50%			6.50%
Proceeds from issuance of debt		$ 880,000
Debt instrument, face amount		$ 900,000
Debt instrument, percentage of redemption price, redemption date one					104.875%
Debt instrument, redemption date, one					May 01, 2019
Debt instrument, percentage of redemption price, redemption date two					103.25%
Debt instrument, redemption date, two					May 01, 2020
Debt instrument, percentage of redemption price, redemption date, latest for redemption at face amount					100.00%
Debt Instrument, Redemption Date, Four					May 01, 2022
Debt instrument, percentage of redemption price, change in ownership control					101.00%
Debt Instrument, Percentage Of Redemption Price, Redemption Date Three					101.625%
Debt Instrument, Redemption Date, Three					May 01, 2021
6.75% Notes
Debt [Line Items]
Loss on redemption of Notes						$ 33,298
Stated interest rate				6.75%		6.75%		6.75%		6.75%
Debt instrument, percentage of redemption price, redemption date one		103.375%
Revolving Credit Facility [Member] \| Wells Fargo Capital Finance, LLC
Debt [Line Items]
Long-term Line of Credit					$ 0	$ 54,425,000
Line of Credit Facility, Expiration Date				Dec. 31, 2018
Line of credit facility, increase (decrease)			$ 0
Maximum borrowing capacity			$ 325,000,000	$ 0
Debt Instrument, Basis Spread on Variable Rate, Rate Reduction from Amendment			25.00%
Revolving Credit Facility [Member] \| Wells Fargo Capital Finance, LLC \| Base Rate
Debt [Line Items]
Stated interest rate			1.00%			0.75%
Revolving Credit Facility [Member] \| Wells Fargo Capital Finance, LLC \| London Interbank Offered Rate (LIBOR)
Debt [Line Items]
Stated interest rate			1.75%		1.50%
Interest Expense [Member] \| Fixed Payment [Member]
Debt [Line Items]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability					$ 100,000	$ 255,000	$ 2,543,000
Scenario, Forecast [Member] \| Optional redemption [Domain] \| Six Point Five Zero Percentage Notes [Domain]
Debt [Line Items]
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed									35.00%