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Refers to accumulated unrealized loss on investments in debt securities in a continuous loss position as percentage of investment securities portfolio.

No definition available.

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Debt Securities Held-To-Maturity, Number Of Securities With Other Than Temporary Impairment Loss

No definition available.

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Debt Securities, Held To Maturity, Original Book Balance

No definition available.

Name:	fgbi_DebtSecuritiesHeldToMaturityOriginalBookBalance
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Data Type:	xbrli:monetaryItemType
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Amount of accumulated unrealized loss on investments in debt securities in a continuous loss position.

No definition available.

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This item represents the amortized cost of securities that have been in a continuous unrealized loss position for twelve months or longer.

No definition available.

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Number of debt securities that have been in a continuous debt position of unrealized loss position for greater than or equal to a year for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.

No definition available.

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Number of debt securities in a continuous debt positions of unrealized loss for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.

No definition available.

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Amount of investment in debt security, measured at amortized cost, sold.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
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Amount of gain (loss) on sale of investment in debt security measured at amortized cost (held-to-maturity), including other-than-temporary impairment (OTTI).

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-Publisher FASB
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This item represents an increase to the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held for which a previous OTTI was recognized and the investor does not intend to sell the debt security and it is not more likely than not that the investor will be required to sell the debt security before recovery of its amortized cost basis.

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This item represents an increase to the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held for which no such other than temporary impairment (OTTI) was previously recognized.

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Sum of the carrying amounts as of the date of the latest financial statement presented of securities which are owned but transferred to another party to serve as collateral to partially or fully secure a debt obligation, repurchase agreement or other current or potential obligation, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Fair value of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions.

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