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Loans and Allowance for Loan Losses - Schedule of Changes in Allowance for Loan Losses and Recorded Investment in Loans (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014 | Dec. 31, 2014
Allowance for loan losses: |  |  |  |  |
Beginning balance |  |  | $ 6,168 |  |
Provision (reduction in reserve) for loan losses | $ (78) | $ (55) | (199) | $ 95 |
Ending balance | 4,345 |  | 4,345 |  | $ 6,168
Loan receivables: |  |  |  |  |
Ending balance | 251,800 |  | 251,800 |  | 274,317
Commercial and Industrial Loans [Member] |  |  |  |  |
Loan receivables: |  |  |  |  |
Ending balance | 18,796 |  | 18,796 |  | 16,838
Consumer Loans [Member] |  |  |  |  |
Loan receivables: |  |  |  |  |
Ending balance | 81,615 |  | 81,615 |  | 69,021
Other Loans [Member] |  |  |  |  |
Loan receivables: |  |  |  |  |
Ending balance | 486 |  | 486 |  | 579
FUSB [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance |  |  | 3,486 | 6,272 | 6,272
Charge-offs |  |  | (361) |  | (1,941)
Recoveries |  |  | 186 |  | 1,075
Provision (reduction in reserve) for loan losses |  |  | (1,370) |  | (1,920)
Ending balance | 1,941 |  | 1,941 |  | 3,486
Ending balance individually evaluated for impairment | 818 |  | 818 |  | 762
Ending balance collectively evaluated for impairment | 1,123 |  | 1,123 |  | 2,724
Loan receivables: |  |  |  |  |
Ending balance | 159,040 |  | 159,040 |  | 191,175
Ending balance individually evaluated for impairment | 6,284 |  | 6,284 |  | 10,605
Ending balance collectively evaluated for impairment | 152,756 |  | 152,756 |  | 180,570
FUSB [Member] | Commercial and Industrial Loans [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance |  |  | 141 | 592 | 592
Charge-offs |  |  |  |  | (289)
Recoveries |  |  | 49 |  | 307
Provision (reduction in reserve) for loan losses |  |  | (55) |  | (469)
Ending balance | 135 |  | 135 |  | 141
Ending balance individually evaluated for impairment | 89 |  | 89 |  |
Ending balance collectively evaluated for impairment | 46 |  | 46 |  | 141
Loan receivables: |  |  |  |  |
Ending balance | 18,796 |  | 18,796 |  | 16,838
Ending balance individually evaluated for impairment | 453 |  | 453 |  |
Ending balance collectively evaluated for impairment | 18,343 |  | 18,343 |  | 16,838
FUSB [Member] | Commercial Real Estate [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance |  |  | 2,810 | 4,852 | 4,852
Charge-offs |  |  | (278) |  | (1,329)
Recoveries |  |  | 12 |  | 587
Provision (reduction in reserve) for loan losses |  |  | (975) |  | (1,300)
Ending balance | 1,569 |  | 1,569 |  | 2,810
Ending balance individually evaluated for impairment | 729 |  | 729 |  | 762
Ending balance collectively evaluated for impairment | 840 |  | 840 |  | 2,048
Loan receivables: |  |  |  |  |
Ending balance | 100,861 |  | 100,861 |  | 135,775
Ending balance individually evaluated for impairment | 5,831 |  | 5,831 |  | 10,509
Ending balance collectively evaluated for impairment | 95,030 |  | 95,030 |  | 125,266
FUSB [Member] | Consumer Loans [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance |  |  | 114 | 180 | 180
Charge-offs |  |  | (16) |  | (147)
Recoveries |  |  | 53 |  | 129
Provision (reduction in reserve) for loan losses |  |  | (114) |  | (48)
Ending balance | 37 |  | 37 |  | 114
Ending balance collectively evaluated for impairment | 37 |  | 37 |  | 114
Loan receivables: |  |  |  |  |
Ending balance | 6,848 |  | 6,848 |  | 7,188
Ending balance collectively evaluated for impairment | 6,848 |  | 6,848 |  | 7,188
FUSB [Member] | Residential Real Estate [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance |  |  | 421 | 635 | 635
Charge-offs |  |  | (67) |  | (176)
Recoveries |  |  | 72 |  | 51
Provision (reduction in reserve) for loan losses |  |  | (241) |  | (89)
Ending balance | 185 |  | 185 |  | 421
Ending balance collectively evaluated for impairment | 185 |  | 185 |  | 421
Loan receivables: |  |  |  |  |
Ending balance | 32,049 |  | 32,049 |  | 30,795
Ending balance individually evaluated for impairment |  |  |  |  | 96
Ending balance collectively evaluated for impairment | 32,049 |  | 32,049 |  | 30,699
FUSB [Member] | Other Loans [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance |  |  |  | 13 | 13
Recoveries |  |  |  |  | 1
Provision (reduction in reserve) for loan losses |  |  | 15 |  | (14)
Ending balance | 15 |  | 15 |  |
Ending balance collectively evaluated for impairment | 15 |  | 15 |  |
Loan receivables: |  |  |  |  |
Ending balance | 486 |  | 486 |  | 579
Ending balance collectively evaluated for impairment | 486 |  | 486 |  | 579
ALC [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance |  |  | 2,682 | 3,124 | 3,124
Charge-offs |  |  | (2,019) |  | (3,089)
Recoveries |  |  | 570 |  | 801
Provision (reduction in reserve) for loan losses |  |  | 1,171 |  | 1,846
Ending balance | 2,404 |  | 2,404 |  | 2,682
Ending balance collectively evaluated for impairment | 2,404 |  | 2,404 |  | 2,682
Loan receivables: |  |  |  |  |
Ending balance | 92,760 |  | 92,760 |  | 83,142
Ending balance collectively evaluated for impairment | 92,760 |  | 92,760 |  | 83,142
ALC [Member] | Consumer Loans [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance |  |  | 2,336 | 2,667 | 2,667
Charge-offs |  |  | (1,846) |  | (2,778)
Recoveries |  |  | 553 |  | 772
Provision (reduction in reserve) for loan losses |  |  | 1,100 |  | 1,675
Ending balance | 2,143 |  | 2,143 |  | 2,336
Ending balance collectively evaluated for impairment | 2,143 |  | 2,143 |  | 2,336
Loan receivables: |  |  |  |  |
Ending balance | 74,767 |  | 74,767 |  | 61,833
Ending balance collectively evaluated for impairment | 74,767 |  | 74,767 |  | 61,833
ALC [Member] | Residential Real Estate [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance |  |  | 346 | 457 | 457
Charge-offs |  |  | (173) |  | (311)
Recoveries |  |  | 17 |  | 29
Provision (reduction in reserve) for loan losses |  |  | 71 |  | 171
Ending balance | 261 |  | 261 |  | 346
Ending balance collectively evaluated for impairment | 261 |  | 261 |  | 346
Loan receivables: |  |  |  |  |
Ending balance | 17,993 |  | 17,993 |  | 21,309
Ending balance collectively evaluated for impairment | 17,993 |  | 17,993 |  | 21,309
FUSB & ALC [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance |  |  | 6,168 | 9,396 | 9,396
Charge-offs |  |  | (2,380) |  | (5,030)
Recoveries |  |  | 756 |  | 1,876
Provision (reduction in reserve) for loan losses |  |  | (199) |  | (74)
Ending balance | 4,345 |  | 4,345 |  | 6,168
Ending balance individually evaluated for impairment | 818 |  | 818 |  | 762
Ending balance collectively evaluated for impairment | 3,527 |  | 3,527 |  | 5,406
Loan receivables: |  |  |  |  |
Ending balance | 251,800 |  | 251,800 |  | 274,317
Ending balance individually evaluated for impairment | 6,284 |  | 6,284 |  | 10,605
Ending balance collectively evaluated for impairment | 245,516 |  | 245,516 |  | 263,712
FUSB & ALC [Member] | Commercial and Industrial Loans [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance |  |  | 141 | 592 | 592
Charge-offs |  |  |  |  | (289)
Recoveries |  |  | 49 |  | 307
Provision (reduction in reserve) for loan losses |  |  | (55) |  | (469)
Ending balance | 135 |  | 135 |  | 141
Ending balance individually evaluated for impairment | 89 |  | 89 |  |
Ending balance collectively evaluated for impairment | 46 |  | 46 |  | 141
Loan receivables: |  |  |  |  |
Ending balance | 18,796 |  | 18,796 |  | 16,838
Ending balance individually evaluated for impairment | 453 |  | 453 |  |
Ending balance collectively evaluated for impairment | 18,343 |  | 18,343 |  | 16,838
FUSB & ALC [Member] | Commercial Real Estate [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance |  |  | 2,810 | 4,852 | 4,852
Charge-offs |  |  | (278) |  | (1,329)
Recoveries |  |  | 12 |  | 587
Provision (reduction in reserve) for loan losses |  |  | (975) |  | (1,300)
Ending balance | 1,569 |  | 1,569 |  | 2,810
Ending balance individually evaluated for impairment | 729 |  | 729 |  | 762
Ending balance collectively evaluated for impairment | 840 |  | 840 |  | 2,048
Loan receivables: |  |  |  |  |
Ending balance | 100,861 |  | 100,861 |  | 135,775
Ending balance individually evaluated for impairment | 5,831 |  | 5,831 |  | 10,509
Ending balance collectively evaluated for impairment | 95,030 |  | 95,030 |  | 125,266
FUSB & ALC [Member] | Consumer Loans [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance |  |  | 2,450 | 2,847 | 2,847
Charge-offs |  |  | (1,862) |  | (2,925)
Recoveries |  |  | 606 |  | 901
Provision (reduction in reserve) for loan losses |  |  | 986 |  | 1,627
Ending balance | 2,180 |  | 2,180 |  | 2,450
Ending balance collectively evaluated for impairment | 2,180 |  | 2,180 |  | 2,450
Loan receivables: |  |  |  |  |
Ending balance | 81,615 |  | 81,615 |  | 69,021
Ending balance collectively evaluated for impairment | 81,615 |  | 81,615 |  | 69,021
FUSB & ALC [Member] | Residential Real Estate [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance |  |  | 767 | 1,092 | 1,092
Charge-offs |  |  | (240) |  | (487)
Recoveries |  |  | 89 |  | 80
Provision (reduction in reserve) for loan losses |  |  | (170) |  | 82
Ending balance | 446 |  | 446 |  | 767
Ending balance collectively evaluated for impairment | 446 |  | 446 |  | 767
Loan receivables: |  |  |  |  |
Ending balance | 50,042 |  | 50,042 |  | 52,104
Ending balance individually evaluated for impairment |  |  |  |  | 96
Ending balance collectively evaluated for impairment | 50,042 |  | 50,042 |  | 52,008
FUSB & ALC [Member] | Other Loans [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance |  |  |  | $ 13 | 13
Recoveries |  |  |  |  | 1
Provision (reduction in reserve) for loan losses |  |  | 15 |  | (14)
Ending balance | 15 |  | 15 |  |
Ending balance collectively evaluated for impairment | 15 |  | 15 |  |
Loan receivables: |  |  |  |  |
Ending balance | 486 |  | 486 |  | 579
Ending balance collectively evaluated for impairment | $ 486 |  | $ 486 |  | $ 579

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