Derivative Instruments (Narratives) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015 Counterparty
Derivatives, Fair Value [Line Items]
Number of different counterparties	1cmco_DerivativeNumberofCounterparties
Reclassify Next Year
Derivatives, Fair Value [Line Items]
Amount of accumulated other comprehensive loss expected to be reclassified in the next 12 months	54
Derivatives Not Designated as Hedging Instruments \| Foreign Exchange Contract [Member]
Derivatives, Fair Value [Line Items]
Notional amount of derivatives	672
Derivatives Designated as Hedging Instruments \| Commodity Contract
Derivatives, Fair Value [Line Items]
Notional amount of foreign currency forward agreements designated as cash flow hedges	8,624
Derivatives Designated as Hedging Instruments \| Reclassify Next Year
Derivatives, Fair Value [Line Items]
Amount of accumulated other comprehensive loss expected to be reclassified in the next 12 months	1,026
Derivatives Designated as Hedging Instruments \| Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Notional amount of foreign currency forward agreements designated as cash flow hedges	86,250
Other Assets \| Derivatives Not Designated as Hedging Instruments \| Foreign Exchange Contract [Member]
Derivatives, Fair Value [Line Items]
Notional amount of derivatives	590

Derivative, Number of Counterparties

No definition available.

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

+ Details

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- Definition

Aggregate net fair value of all derivative instruments designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13495-108611

+ Details

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Period Type:	instant

- Definition

Nominal or face amount used to calculate payments on the derivative liability.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5579245-113959

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5580258-113959

+ Details

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- Details

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- Details

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- Details

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- Details

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