Name:	chmt_DisposalGroupIncludingDiscontinuedOperationPensionEnvironmentAndOtherLiabilities
Namespace Prefix:	chmt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents the preferred stock to be received as consideration, including a component of the entity (discontinued operation).

No definition available.

Name:	chmt_DisposalGroupIncludingDiscontinuedOperationPreferredStockToBeReceivedAsConsideration
Namespace Prefix:	chmt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents the net consideration to be received in the form of seller note for the sale of a business.

No definition available.

Name:	chmt_DisposalGroupIncludingDiscontinuedOperationSellerNoteToBeReceivedAsConsideration
Namespace Prefix:	chmt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the number of joint ventures, equity interest in which is sold by the entity.

No definition available.

Name:	chmt_DisposalGroupIncludingDiscontinuedOperationsNumberOfJointVenturesEquityInterestSold
Namespace Prefix:	chmt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Represents the net consideration to be received for the sale of a business, not a discontinued operation.

No definition available.

Name:	chmt_DisposalGroupNotDiscontinuedOperationsSalePrice
Namespace Prefix:	chmt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the cash consideration in accordance with the joint venture agreement.

No definition available.

Name:	chmt_EquityMethodInvestmentsCashConsideration
Namespace Prefix:	chmt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3179-108585

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 15, 16

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.