Note 4 - Loans and Allowance for Loan Losses (Details) - Allowance for Loan Losses (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning of period	$ 6,588,597	$ 7,802,000
Allowance for loan losses, end of period	6,755,671	7,761,000
Ending balance: individually evaluated for impairment	818,000		785,000
Ending balance: collectively evaluated for impairment	5,938,000		5,804,000
Loans:
Loans ending balance: individually evaluated for impairment	5,677,000		6,028,000
Loans ending balance: collectively evaluated for impairment	496,094,000		487,409,000
Provision charged to expense	150,000us-gaap_ProvisionForLoanAndLeaseLosses	200,000us-gaap_ProvisionForLoanAndLeaseLosses
Losses charged off	(18,000)	(269,000)
Recoveries	35,000	28,000
Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning of period	1,330,000	2,387,000
Allowance for loan losses, end of period	1,361,000	2,008,000
Ending balance: individually evaluated for impairment	375,000		376,000
Ending balance: collectively evaluated for impairment	986,000		954,000
Loans:
Loans ending balance: individually evaluated for impairment	2,686,000		2,893,000
Loans ending balance: collectively evaluated for impairment	33,268,000		33,892,000
Provision charged to expense	24,000	(380,000)
Losses charged off	0	0
Recoveries	7,000	1,000
Real Estate Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning of period	1,992,000	2,059,000
Allowance for loan losses, end of period	1,986,000	2,344,000
Ending balance: individually evaluated for impairment	0		158,000
Ending balance: collectively evaluated for impairment	1,986,000		1,834,000
Loans:
Loans ending balance: individually evaluated for impairment	0		460,000
Loans ending balance: collectively evaluated for impairment	229,645,000		215,145,000
Provision charged to expense	(6,000)	285,000
Losses charged off	0	0
Recoveries	0	0
One-to-four Family Units [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning of period	900,000	997,000
Allowance for loan losses, end of period	884,000	962,000
Ending balance: individually evaluated for impairment	81,000		36,000
Ending balance: collectively evaluated for impairment	803,000		864,000
Loans:
Loans ending balance: individually evaluated for impairment	1,417,000		847,000
Loans ending balance: collectively evaluated for impairment	95,712,000		97,054,000
Provision charged to expense	(24,000)	49,000
Losses charged off	0	(86,000)
Recoveries	8,000	2,000
Multi-family Units [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning of period	127,000	209,000
Allowance for loan losses, end of period	133,000	147,000
Ending balance: individually evaluated for impairment	0		0
Ending balance: collectively evaluated for impairment	133,000		127,000
Loans:
Loans ending balance: individually evaluated for impairment	0		0
Loans ending balance: collectively evaluated for impairment	34,997,000		33,786,000
Provision charged to expense	6,000	(62,000)
Losses charged off	0	0
Recoveries	0	0
Commercial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning of period	1,954,000	1,519,000
Allowance for loan losses, end of period	1,804,000	1,799,000
Ending balance: individually evaluated for impairment	323,000		203,000
Ending balance: collectively evaluated for impairment	1,481,000		1,751,000
Loans:
Loans ending balance: individually evaluated for impairment	956,000		1,027,000
Loans ending balance: collectively evaluated for impairment	86,692,000		91,087,000
Provision charged to expense	(151,000)	437,000
Losses charged off	0	(164,000)
Recoveries	1,000	7,000
Consumer and Other Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning of period	185,000	272,000
Allowance for loan losses, end of period	221,000	228,000
Ending balance: individually evaluated for impairment	39,000		12,000
Ending balance: collectively evaluated for impairment	182,000		173,000
Loans:
Loans ending balance: individually evaluated for impairment	618,000		801,000
Loans ending balance: collectively evaluated for impairment	15,780,000		16,445,000
Provision charged to expense	35,000	(43,000)
Losses charged off	(18,000)	(19,000)
Recoveries	19,000	18,000
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning of period	101,000	359,000
Allowance for loan losses, end of period	367,000	273,000
Ending balance: individually evaluated for impairment	0		0
Ending balance: collectively evaluated for impairment	367,000		101,000
Loans:
Loans ending balance: individually evaluated for impairment	0		0
Loans ending balance: collectively evaluated for impairment	0		0
Provision charged to expense	266,000	(86,000)
Losses charged off	0	0
Recoveries	$ 0	$ 0

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

Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

+ References

+ Details

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

- Definition

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(4)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

+ Details

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

- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

+ Details

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

- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (h)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

+ Details

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

- Definition

The balance of financing receivables that were individually evaluated for impairment.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (h)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

+ Details

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

- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(d))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph d

-Article 9

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)(1)(ii)

-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section L

-Subsection 1

+ Details

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

- Definition

Amount of expense related to estimated loss from loan and lease transactions.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 11

-Article 9

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.11)

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

+ Details

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

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=gfed_CommercialLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=gfed_ConstructionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=gfed_ConsumerandOtherLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=gfed_MultiFamilyUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=gfed_OnetoFourFamilyUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=gfed_RealEstateCommercialMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=gfed_UnallocatedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: