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Segment Reporting - Summary of Results for Reportable Segments (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended |  | 3 Months Ended | 6 Months Ended | 12 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended
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Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Dec. 31, 2013 | Jun. 30, 2014 Eliminations [Member] | Jun. 30, 2013 Eliminations [Member] | Jun. 30, 2014 Eliminations [Member] | Jun. 30, 2013 Eliminations [Member] | Jun. 30, 2014 FUSB [Member] | Dec. 31, 2013 FUSB [Member] | Jun. 30, 2014 FUSB [Member] Operating Segments [Member] | Jun. 30, 2013 FUSB [Member] Operating Segments [Member] | Jun. 30, 2014 FUSB [Member] Operating Segments [Member] | Jun. 30, 2013 FUSB [Member] Operating Segments [Member] | Jun. 30, 2014 ALC [Member] | Dec. 31, 2013 ALC [Member] | Jun. 30, 2014 ALC [Member] Operating Segments [Member] | Jun. 30, 2013 ALC [Member] Operating Segments [Member] | Jun. 30, 2014 ALC [Member] Operating Segments [Member] | Jun. 30, 2013 ALC [Member] Operating Segments [Member] | Jun. 30, 2014 Other Segments [Member] Operating Segments [Member] | Jun. 30, 2013 Other Segments [Member] Operating Segments [Member] | Jun. 30, 2014 Other Segments [Member] Operating Segments [Member] | Jun. 30, 2013 Other Segments [Member] Operating Segments [Member]
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net interest income | $ 7,300 | $ 7,695 | $ 14,501 | $ 15,500 |  |  |  |  |  |  |  | $ 4,101 | $ 4,181 | $ 8,188 | $ 8,516 |  |  | $ 3,197 | $ 3,511 | $ 6,308 | $ 6,979 | $ 2 | $ 3 | $ 5 | $ 5
PROVISION (REDUCTION IN RESERVE) FOR LOAN LOSSES | (264) | 53 | 150 | 559 |  |  |  |  |  | (501) | (2,862) | (325) | (200) | (500) | (162) | 651 | 2,220 | 61 | 253 | 650 | 721 |  |  |  |
Total non-interest income | 1,485 | 1,228 | 2,632 | 2,851 |  | (1,512) | (1,487) | (2,625) | (2,671) |  |  | 1,286 | 929 | 2,217 | 2,326 |  |  | 286 | 349 | 572 | 685 | 1,425 | 1,437 | 2,468 | 2,511
Total non-interest expense | 7,223 | 7,176 | 14,107 | 14,868 |  | (180) | (218) | (391) | (439) |  |  | 4,767 | 4,666 | 9,097 | 9,285 |  |  | 2,443 | 2,529 | 4,999 | 5,661 | 193 | 199 | 402 | 361
INCOME BEFORE INCOME TAXES | 1,826 | 1,694 | 2,876 | 2,924 |  | (1,332) | (1,269) | (2,234) | (2,232) |  |  | 945 | 644 | 1,808 | 1,719 |  |  | 979 | 1,078 | 1,231 | 1,282 | 1,234 | 1,241 | 2,071 | 2,155
PROVISION FOR INCOME TAXES | 608 | 512 | 884 | 856 |  |  |  |  |  |  |  | 230 | 96 | 406 | 358 |  |  | 377 | 415 | 476 | 496 | 1 | 1 | 2 | 2
Net income | 1,218 | 1,182 | 1,992 | 2,068 |  | (1,332) | (1,269) | (2,234) | (2,232) |  |  | 715 | 548 | 1,402 | 1,361 |  |  | 602 | 663 | 755 | 786 | 1,233 | 1,240 | 2,069 | 2,153
Other significant items: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets | 570,692 | 555,706 | 570,692 | 555,706 | 569,801 | (152,396) | (148,782) | (152,396) | (148,782) |  |  | 572,377 | 557,364 | 572,377 | 557,364 |  |  | 71,303 | 71,769 | 71,303 | 71,769 | 79,408 | 75,355 | 79,408 | 75,355
Total investment securities | 209,945 | 137,726 | 209,945 | 137,726 |  |  |  |  |  |  |  | 209,865 | 137,646 | 209,865 | 137,646 |  |  |  |  |  |  | 80 | 80 | 80 | 80
Total loans, net | 272,086 | 312,008 | 272,086 | 312,008 |  | (58,935) | (55,913) | (58,935) | (55,913) |  |  | 262,533 | 299,497 | 262,533 | 299,497 |  |  | 68,488 | 68,424 | 68,488 | 68,424 |  |  |  |
Investment in subsidiaries | 5 | 5 | 5 | 5 |  | (74,262) | (70,915) | (74,262) | (70,915) |  |  | 5 | 784 | 5 | 784 |  |  |  |  |  |  | 74,262 | 70,136 | 74,262 | 70,136
Fixed asset addition | 160 | 40 | 881 | 80 |  |  |  |  |  |  |  | 159 | 33 | 867 | 63 |  |  | 1 | 7 | 14 | 17 |  |  |  |
Depreciation expense | 184 | 175 | 364 | 340 |  |  |  |  |  |  |  | 131 | 137 | 259 | 261 |  |  | 53 | 38 | 105 | 79 |  |  |  |
Total interest income from external customers | 7,930 | 8,432 | 15,776 | 17,026 |  |  |  |  |  |  |  | 3,935 | 4,123 | 7,904 | 8,398 |  |  | 3,995 | 4,309 | 7,872 | 8,628 |  |  |  |
Total interest income from affiliates |  |  |  |  |  | $ (801) | $ (801) | $ (1,568) | $ (1,653) |  |  | $ 799 | $ 798 | $ 1,564 | $ 1,649 |  |  |  |  |  |  | $ 2 | $ 3 | $ 4 | $ 4

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- Definition Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount after allowance and 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 and loans held for sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 Reference 2: 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) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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