-- None. No documentation exists for this element. --

No definition available.

Name:	mgpi_EquityMethodInvestmentConditionalRighttoEndOperationsEarningsBeforeInterestExpenseIncomeTaxDepreciationandAmortizationThresholdAmount
Namespace Prefix:	mgpi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Equity Method Investment, Decrease in Income from Equity Method Investment due to Remeasurement

+ References

No definition available.

+ Details

Name:	mgpi_EquityMethodInvestmentDecreaseinIncomefromEquityMethodInvestmentduetoRemeasurement
Namespace Prefix:	mgpi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Equity Method Investment, Decrease in Income (Loss) from Equity Method Investment, Percentage

+ References

No definition available.

+ Details

Name:	mgpi_EquityMethodInvestmentDecreaseinIncomeLossfromEquityMethodInvestmentPercentage
Namespace Prefix:	mgpi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Equity Method Investment, Income Allocation to Electing Member, Percentage

+ References

No definition available.

+ Details

Name:	mgpi_EquityMethodInvestmentIncomeAllocationtoElectingMemberPercentage
Namespace Prefix:	mgpi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Equity Method Investment, Income Allocation to Objecting Member, Percentage

+ References

No definition available.

+ Details

Name:	mgpi_EquityMethodInvestmentIncomeAllocationtoObjectingMemberPercentage
Namespace Prefix:	mgpi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Equity Method Investment, Increase (Decrease) Earnings Per Share

+ References

No definition available.

+ Details

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Namespace Prefix:	mgpi_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Equity Method Investment, Increase (Decrease) Ownership Percentage

+ References

No definition available.

+ Details

Name:	mgpi_EquityMethodInvestmentIncreaseDecreaseOwnershipPercentage
Namespace Prefix:	mgpi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Equity Method Investment, Ownership Percentage by Parent

+ References

No definition available.

+ Details

Name:	mgpi_EquityMethodInvestmentOwnershipPercentagebyParent
Namespace Prefix:	mgpi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Equity Method Investment, Summarized Financial Information, Depreciation and Amortization

+ References

No definition available.

+ Details

Name:	mgpi_EquityMethodInvestmentSummarizedFinancialInformationDepreciationandAmortization
Namespace Prefix:	mgpi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

This item represents the amount of unrealized intercompany profits and losses on transactions between the Entity and unconsolidated subsidiaries (including certain corporate joint ventures, and noncontrolled corporations), accounted for under the equity method of accounting, which have not been eliminated in preparing the Entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph b

-Article 3A

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 35

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=35687916&loc=d3e32367-111569

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=27015204&loc=d3e355119-122828

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentsLineItems
Namespace Prefix:	us-gaap_
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Period Type:	duration

Equity Method Investments (Detail) (USD $)	3 Months Ended		6 Months Ended
Equity Method Investments (Detail) (USD $)	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 29, 2014
ICP Limited Liability Company [Member]
Schedule of Equity Method Investments [Line Items]
EBITDA		$ 500,000
ICP [Member]
Schedule of Equity Method Investments [Line Items]
Equity method ownership percentage (percent)	26.00%		26.00%		30.00%
Income allocation to objecting member (as a percent)	80.00%		80.00%
Income allocation to electing member (percent)	20.00%		20.00%
Decrease in related equity method investment earnings due to reassessment	1,882,000
Decrease in earnings per share	$ 0.11		$ 0.10
Related party sales to MGPI	8,273,000	741,000	14,618,000	3,400,000
Depreciation and amortization	$ 691,000	$ 1,170,000	$ 1,363,000	$ 2,340,000
Decrease in equity method investment earnings (as a percent)	17.00%		22.00%
Decrease of equity interest in ICP	4.00%		4.00%
ICP [Member] \| ICP Holdings [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage by parent (percent)	70.00%		70.00%
DMI [Member]
Schedule of Equity Method Investments [Line Items]
Equity method ownership percentage (percent)	50.00%		50.00%