Loans and Allowance for Loan Losses - Schedule of Aging Analysis of Past Due Loans (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	$ 315,433	$ 361,779
Accruing loans past due 90 days or more amounted	1,700	1,600
Construction, Land Development and Other Land Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	11,348	30,635
Secured by 1-4 Family Residential Properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	61,599	71,497
Secured by Multi-family Residential Properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	22,095	24,187
Secured by Non-farm, Non-residential Properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	122,430	129,235
Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	761	801
Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	37,772	42,903
Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	58,824	61,484
Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	604	1,037
FUSB [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	2,004	2,529
60-89 Days Past Due	285	1,878
Greater than 90 Days	10,035	19,795
Total Past Due	12,324	24,202
Current	227,550	257,529
Total loans	239,874	281,731
Accruing loans past due 90 days or more amounted
FUSB [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due		456
60-89 Days Past Due	38	1,126
Greater than 90 Days	2,000	10,329
Total Past Due	2,038	11,911
Current	9,310	18,724
Total loans	11,348	30,635
Accruing loans past due 90 days or more amounted
FUSB [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	271	1,027
60-89 Days Past Due	154	572
Greater than 90 Days	1,801	1,106
Total Past Due	2,226	2,705
Current	32,752	35,745
Total loans	34,978	38,450
Accruing loans past due 90 days or more amounted
FUSB [Member] | Secured by Multi-family Residential Properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due
60-89 Days Past Due
Greater than 90 Days	1,286	2,884
Total Past Due	1,286	2,884
Current	20,809	21,303
Total loans	22,095	24,187
Accruing loans past due 90 days or more amounted
FUSB [Member] | Secured by Non-farm, Non-residential Properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	719	210
60-89 Days Past Due	93	32
Greater than 90 Days	4,434	4,930
Total Past Due	5,246	5,172
Current	117,184	124,063
Total loans	122,430	129,235
Accruing loans past due 90 days or more amounted
FUSB [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due
60-89 Days Past Due
Greater than 90 Days
Total Past Due
Current	761	801
Total loans	761	801
Accruing loans past due 90 days or more amounted
FUSB [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	902	429
60-89 Days Past Due		59
Greater than 90 Days	480	480
Total Past Due	1,382	968
Current	36,390	41,935
Total loans	37,772	42,903
Accruing loans past due 90 days or more amounted
FUSB [Member] | Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	101	407
60-89 Days Past Due		89
Greater than 90 Days	26	66
Total Past Due	127	562
Current	9,759	13,921
Total loans	9,886	14,483
Accruing loans past due 90 days or more amounted
FUSB [Member] | Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	11
60-89 Days Past Due
Greater than 90 Days	8
Total Past Due	19
Current	585	1,037
Total loans	604	1,037
Accruing loans past due 90 days or more amounted
ALC [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,087	1,337
60-89 Days Past Due	740	782
Greater than 90 Days	1,765	2,234
Total Past Due	3,592	4,353
Current	71,967	75,695
Total loans	75,559	80,048
Accruing loans past due 90 days or more amounted	1,661	1,571
ALC [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due
60-89 Days Past Due
Greater than 90 Days
Total Past Due
Current
Total loans
Accruing loans past due 90 days or more amounted
ALC [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	403	348
60-89 Days Past Due	143	173
Greater than 90 Days	507	1,075
Total Past Due	1,053	1,596
Current	25,568	31,451
Total loans	26,621	33,047
Accruing loans past due 90 days or more amounted	409	851
ALC [Member] | Secured by Multi-family Residential Properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due
60-89 Days Past Due
Greater than 90 Days
Total Past Due
Current
Total loans
Accruing loans past due 90 days or more amounted
ALC [Member] | Secured by Non-farm, Non-residential Properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due
60-89 Days Past Due
Greater than 90 Days
Total Past Due
Current
Total loans
Accruing loans past due 90 days or more amounted
ALC [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due
60-89 Days Past Due
Greater than 90 Days
Total Past Due
Current
Total loans
Accruing loans past due 90 days or more amounted
ALC [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due
60-89 Days Past Due
Greater than 90 Days
Total Past Due
Current
Total loans
Accruing loans past due 90 days or more amounted
ALC [Member] | Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	684	989
60-89 Days Past Due	597	609
Greater than 90 Days	1,258	1,159
Total Past Due	2,539	2,757
Current	46,399	44,244
Total loans	48,938	47,001
Accruing loans past due 90 days or more amounted	1,252	720
ALC [Member] | Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due
60-89 Days Past Due
Greater than 90 Days
Total Past Due
Current
Total loans
Accruing loans past due 90 days or more amounted