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The unrecognized amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

No definition available.

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The gross amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

No definition available.

Name:	cigi_TaxCreditCarryforwardsGross
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The unrecognized amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

No definition available.

Name:	cigi_TaxCreditCarryforwardsUnrecognized
Namespace Prefix:	cigi_
Data Type:	xbrli:monetaryItemType
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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-3

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The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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