Name:	fgbi_FinancingReceivablesFixedAndFloatingRateLoansByContractualMaturityAbstract
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Financing receivables, excluding nonaccrual status notes, gross carrying amount that are maturing after fifteen years.

No definition available.

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Financing receivables, excluding nonaccrual status notes, gross carrying amount that are maturing after five years but not more than fifteen years.

No definition available.

Name:	fgbi_FinancingReceivablesThatAreMaturingAfterFiveYearsButNotMoreThanFifteenYears
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Financing receivables, excluding nonaccrual status notes, gross carrying amount that are maturing after one year but not more than five years.

No definition available.

Name:	fgbi_FinancingReceivablesThatAreMaturingAfterOneYearButNotMoreThanFiveYears
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Financing receivables, excluding nonaccrual status notes, gross carrying amount that are maturing after one year or less.

No definition available.

Name:	fgbi_FinancingReceivablesThatAreMaturingAfterOneYearOrLess
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Loans amount before allowance of loans and leases held in portfolio and those classified as nonaccrual, including but not limited to, commercial and consumer loans.

No definition available.

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Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
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-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

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