Environmental, Contingencies and Commitments (Number of Claimants Involved in Asbestos Claims) (Detail) (Asbestos Issue [Member])	12 Months Ended
Dec. 31, 2012 Person	Dec. 31, 2011 Person
Asbestos Issue [Member]
Asbestos Claims [Line Items]
Number of claimants at beginning of period	8,000	8,000
Number of claimants associated with claims closed during period	(100)	(100)
Number of claimants associated with claims opened during period	100	100
Number of claimants at end of period	8,000	8,000

Name:	cyt_AsbestosClaimsLineItems
Namespace Prefix:	cyt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The number of claims settled and dismissed during the period.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9, 10, 11, 12

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

+ Details

Name:	us-gaap_LossContingencyClaimsSettledAndDismissedNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

+ Details

Name:	us-gaap_LossContingencyNewClaimsFiledNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The total amount of pending claims pertaining to a loss contingency accrual as of the balance sheet date.

+ References

+ Details

Name:	us-gaap_LossContingencyPendingClaimsNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant