Note 4 - Loans and Allowance for Loan Losses (Details) - Impaired Loans (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Real estate - residential mortgage:
Loans, specific valuation allowance	$ 758		$ 758		$ 1,601
Real estate - residential mortgage:
Loans, recorded balance	8,866		8,866		16,171
Loans, unpaid principal balance	10,742		10,742		17,849
Loans, specific valuation allowance	758		758		1,601
Loans, average investment	10,069	17,652	11,239	17,473
Loans, interest income recognized	98	14	99	40
One to Four Family Units [Member]
Real estate - residential mortgage:
Loans without a specific valuation allowance, recorded balance	896		896		620
Loans without a specific valuation allowance, unpaid principal balance	896		896		620
Loans without a specific valuation allowance, average investment	823	2,164	752	2,152
Loans without a specific valuation allowance, interest income recognized		1	1	3
Real estate - residential mortgage:
Loans with a specific valuation allowance, recorded balance	314		314		267
Loans with a specific valuation allowance, unpaid principal balance	314		314		267
Loans, specific valuation allowance	48		48		8
Loans with a specific valuation allowance, average investment	325	181	329	144
Real estate - residential mortgage:
Loans, recorded balance	1,210		1,210		887
Loans, unpaid principal balance	1,210		1,210		887
Loans, specific valuation allowance	48		48		8
Loans, average investment	1,148	2,345	1,081	2,296
Loans, interest income recognized		1	1	3
Real Estate Construction [Member]
Real estate - residential mortgage:
Loans without a specific valuation allowance, recorded balance	93		93		96
Loans without a specific valuation allowance, unpaid principal balance	93		93		940
Loans without a specific valuation allowance, average investment	94	5,320	95	5,214
Real estate - residential mortgage:
Loans with a specific valuation allowance, recorded balance	3,337		3,337		4,433
Loans with a specific valuation allowance, unpaid principal balance	4,388		4,388		4,433
Loans, specific valuation allowance	515		515		890
Loans with a specific valuation allowance, average investment	3,532	613	3,883	859
Real estate - residential mortgage:
Loans, recorded balance	3,430		3,430		4,529
Loans, unpaid principal balance	4,481		4,481		5,373
Loans, specific valuation allowance	515		515		890
Loans, average investment	3,626	5,933	3,978	6,073
Real Estate Commercial [Member]
Real estate - residential mortgage:
Loans without a specific valuation allowance, recorded balance	28		28		3,663
Loans without a specific valuation allowance, unpaid principal balance	37		37		3,663
Loans without a specific valuation allowance, average investment	264	5,095	408	4,142
Loans without a specific valuation allowance, interest income recognized		13		36
Real estate - residential mortgage:
Loans with a specific valuation allowance, recorded balance	487		487
Loans with a specific valuation allowance, unpaid principal balance	487		487
Loans, specific valuation allowance	185		185
Loans with a specific valuation allowance, average investment	574		412	1,122
Real estate - residential mortgage:
Loans, recorded balance	515		515		3,663
Loans, unpaid principal balance	524		524		3,663
Loans, specific valuation allowance	185		185
Loans, average investment	838	5,095	820	5,264
Loans, interest income recognized		13		36
Commercial Loans [Member]
Real estate - residential mortgage:
Loans without a specific valuation allowance, recorded balance	3,438		3,438		2,327
Loans without a specific valuation allowance, unpaid principal balance	4,254		4,254		2,462
Loans without a specific valuation allowance, average investment	3,486	648	3,088	646
Loans without a specific valuation allowance, interest income recognized	98		98	1
Real estate - residential mortgage:
Loans with a specific valuation allowance, recorded balance					4,449
Loans with a specific valuation allowance, unpaid principal balance					5,148
Loans, specific valuation allowance					601
Loans with a specific valuation allowance, average investment	699	3,230	1,897	2,756
Real estate - residential mortgage:
Loans, recorded balance	3,438		3,438		6,776
Loans, unpaid principal balance	4,254		4,254		7,610
Loans, specific valuation allowance					601
Loans, average investment	4,185	3,878	4,985	3,402
Loans, interest income recognized	98		98	1
Consumer and Other Loans [Member]
Real estate - residential mortgage:
Loans without a specific valuation allowance, average investment		96		99
Real estate - residential mortgage:
Loans with a specific valuation allowance, recorded balance	273		273		316
Loans with a specific valuation allowance, unpaid principal balance	273		273		316
Loans, specific valuation allowance	10		10		102
Loans with a specific valuation allowance, average investment	272	305	375	339
Real estate - residential mortgage:
Loans, recorded balance	273		273		316
Loans, unpaid principal balance	273		273		316
Loans, specific valuation allowance	10		10		102
Loans, average investment	$ 272	$ 401	$ 375	$ 438

Name:	gfed_RealEstateResidentialMortgageAbstract0000
Namespace Prefix:	gfed_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Name:	gfed_RealEstateResidentialMortgageAbstract00000
Namespace Prefix:	gfed_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	gfed_RealEstateResidentialMortgageAbstract000000
Namespace Prefix:	gfed_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5258-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953550-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableRelatedAllowance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of average investment of impaired financing receivables for which there is no related allowance for credit losses.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of interest income, recognized on accrual basis, on financing receivables that are recognized as impaired, for which there is no related allowance for credit losses.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of average investment of impaired financing receivables for which there is a related allowance for credit losses.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant