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After tax amount of the income statement impact of reclassifications out of other comprehensive income (loss) recognized as a component of net periodic benefit cost.

No definition available.

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Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Tax Effect of Items Recognized in Net Periodic Benefit Cost

No definition available.

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Namespace Prefix:	ctgx_
Data Type:	xbrli:monetaryItemType
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Before tax amount of the income statement impact of the reclassification adjustment for actuarial losses (gains) recognized as a component of net periodic benefit cost.

No definition available.

Name:	ctgx_OtherComprehensiveLossReclassificationPensionAndOtherPostretirementBenefitPlansNetLossRecognizedInNetPeriodicBenefitCostBeforeTax
Namespace Prefix:	ctgx_
Data Type:	xbrli:monetaryItemType
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- Details

Name:	us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (h)(1)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph h

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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