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The minimum Total risk based capital ratio (total capital divided by risk weighted assets) required for base one three fully phased-in capital adequacy purposes under the regulatory framework for prompt corrective action.

No definition available.

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Amount of minimum common equity Tier 1 Risk-based capital required for base one three fully phased-in to be categorized as adequately capitalized under regulatory framework for prompt corrective action.

No definition available.

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The minimum common equity Tier 1 Risk Based Capital required for base one phase three fully phased-in capital adequacy purposes under the regulatory framework for prompt corrective action.

No definition available.

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The common equity Tier 1 capital ratio (Tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action.

No definition available.

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Number of preceding years for which approval is also required if dividends declared exceed the net profits for that year combined with the retained net profits.

No definition available.

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The minimum amount of Tier 1 Leverage Capital required for base one three fully phased-in capital adequacy purposes under the regulatory framework for prompt corrective action.

No definition available.

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Namespace Prefix:	cbtx_
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The minimum amount of Tier 1 Leverage Capital for base one three fully phased-in capital adequacy purposes divided by average assets as defined in the regulations.

No definition available.

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The minimum amount of Tier 1 Risk Based Capital required for base one three fully phased-in capital adequacy purposes under the regulatory framework for prompt corrective action.

No definition available.

Name:	cbtx_TierOneRiskBasedCapitalRequiredForBaseOneThreeFullyPhasedInCapitalAdequacy
Namespace Prefix:	cbtx_
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The minimum Tier One Capital Ratio (Tier one capital divided by risk-weighted assets) required for base one three fully phased-in capital adequacy purposes under the regulatory framework for prompt corrective action.

No definition available.

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Data Type:	xbrli:pureItemType
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Amount of total capital as defined by regulatory framework.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 10
-Section 50
-Paragraph 5
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
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No definition available.

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Amount of minimum total risk-based capital categorized as well capitalized as defined by regulatory framework for prompt corrective action.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1
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Ratio of minimum total risk-based capital to risk-weighted assets categorized as well capitalized as defined by regulatory framework for prompt corrective action.

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Ratio of total risk-based capital to risk-weighted assets as defined by regulatory framework.

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Amount of Common Equity Tier 1 risk-based capital as defined by regulatory framework.

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No definition available.

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Ratio of Common Equity Tier 1 risk-based capital to risk-weighted assets as defined by regulatory framework.

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Amount of minimum Common Equity Tier 1 risk-based capital categorized as well capitalized as defined by regulatory framework for prompt corrective action.

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Ratio of Tier 1 risk-based capital to risk-weighted assets exceeding minimum required for capital adequacy as defined by regulatory framework.

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Amount of Tier 1 leverage capital as defined by regulatory framework.

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No definition available.

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Amount of minimum Tier 1 leverage capital categorized as well capitalized as defined by regulatory framework for prompt corrective action.

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Ratio of minimum Tier 1 leverage capital to average assets categorized as well capitalized as defined by regulatory framework for prompt corrective action.

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Ratio of Tier 1 capital to average assets as defined by regulatory framework.

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Amount of Tier 1 risk-based capital as defined by regulatory framework.

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No definition available.

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Amount of minimum Tier 1 risk-based capital categorized as well capitalized as defined by regulatory framework for prompt corrective action.

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Ratio of minimum Tier 1 risk-based capital to risk-weighted assets categorized as well capitalized as defined by regulatory framework for prompt corrective action.