-- 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
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- 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
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- 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, Ownership Percentage by Parent

+ References

No definition available.

+ Details

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Namespace Prefix:	mgpi_
Data Type:	num:percentItemType
Balance Type:	na
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- Definition

Equity Method Investment, Summarized Financial Information, Depreciation and Amortization

+ References

No definition available.

+ Details

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

- Definition

This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 13

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
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
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Period Type:	instant

- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

+ Details

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

- Details

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

- Definition

Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

+ References

No definition available.

+ Details

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

- Details

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- Details

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Equity Method Investments (Detail) (USD $)	12 Months Ended		3 Months Ended	0 Months Ended
Equity Method Investments (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 04, 2014	Mar. 31, 2014
Schedule of Equity Method Investments [Line Items]
Distribution received from equity method investee	$ 4,835,000	$ 0
Related party expenses	34,615,000	7,736,000
ICP Limited Liability Company [Member]
Schedule of Equity Method Investments [Line Items]
EBITDA	(500,000)		(500,000)
ICP [Member]
Schedule of Equity Method Investments [Line Items]
Equity method ownership percentage (percent)	30.00%				30.00%
Income allocation to electing member (as a percent)	20.00%
Income allocation to objecting member (as a percent)	80.00%
Decrease in related equity method investment earnings due to reassessment	1,882,000
Decrease in earnings per share	$ (0.10)
Distribution received from equity method investee				4,835,000
Depreciation and amortization	$ 2,847,000	$ 4,523,000
ICP [Member] \| ICP Holdings [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage by parent (as a percent)	70.00%
Equity method investment, ownership percentage by parent (as a percent)					70.00%
D.M. Ingredients GmbH [Member]
Schedule of Equity Method Investments [Line Items]
Equity method ownership percentage (percent)	50.00%