Loans and Allowance for Loan Losses - Schedule of Aging Analysis of Past Due Loans (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	$ 274,317	$ 315,433
Accruing loans past due 90 days or more amounted	1,700	1,700
Construction, Land Development and Other Land Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	10,431	11,348
Secured by 1-4 Family Residential Properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	52,104	61,599
Secured by Multi-family Residential Properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	20,403	22,095
Secured by Non-farm, Non-residential Properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	104,883	122,430
Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	58	761
Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	16,838	37,772
Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	69,021	58,824
Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	579	604
FUSB [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	525	2,004
60-89 Days Past Due	190	285
Greater than 90 Days	2,717	10,035
Total Past Due	3,432	12,324
Current	187,743	227,550
Total loans	191,175	239,874
Accruing loans past due 90 days or more amounted	11
FUSB [Member] \| Construction, Land Development and Other Land Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	41
60-89 Days Past Due		38
Greater than 90 Days	86	2,000
Total Past Due	127	2,038
Current	10,304	9,310
Total loans	10,431	11,348
FUSB [Member] \| Secured by 1-4 Family Residential Properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	200	271
60-89 Days Past Due	20	154
Greater than 90 Days	852	1,801
Total Past Due	1,072	2,226
Current	29,723	32,752
Total loans	30,795	34,978
FUSB [Member] \| Secured by Multi-family Residential Properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Greater than 90 Days		1,286
Total Past Due		1,286
Current	20,403	20,809
Total loans	20,403	22,095
FUSB [Member] \| Secured by Non-farm, Non-residential Properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	268	719
60-89 Days Past Due	159	93
Greater than 90 Days	1,743	4,434
Total Past Due	2,170	5,246
Current	102,713	117,184
Total loans	104,883	122,430
FUSB [Member] \| Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	58	761
Total loans	58	761
FUSB [Member] \| Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due		902
60-89 Days Past Due	8
Greater than 90 Days		480
Total Past Due	8	1,382
Current	16,830	36,390
Total loans	16,838	37,772
FUSB [Member] \| Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	12	101
60-89 Days Past Due	3
Greater than 90 Days	24	26
Total Past Due	39	127
Current	7,149	9,759
Total loans	7,188	9,886
FUSB [Member] \| Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	4	11
Greater than 90 Days	12	8
Total Past Due	16	19
Current	563	585
Total loans	579	604
Accruing loans past due 90 days or more amounted	11
ALC [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	853	1,087
60-89 Days Past Due	705	740
Greater than 90 Days	1,847	1,765
Total Past Due	3,405	3,592
Current	79,737	71,967
Total loans	83,142	75,559
Accruing loans past due 90 days or more amounted	1,736	1,661
ALC [Member] \| Secured by 1-4 Family Residential Properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	182	403
60-89 Days Past Due	147	143
Greater than 90 Days	501	507
Total Past Due	830	1,053
Current	20,480	25,568
Total loans	21,309	26,621
Accruing loans past due 90 days or more amounted	401	409
ALC [Member] \| Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	671	684
60-89 Days Past Due	558	597
Greater than 90 Days	1,346	1,258
Total Past Due	2,575	2,539
Current	59,257	46,399
Total loans	61,833	48,938
Accruing loans past due 90 days or more amounted	$ 1,335	$ 1,252

Financing receivables that are less than 60 days past due but more than 29 days past due.

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

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

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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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