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Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)
In Thousands, unless otherwise specified
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Mar. 31, 2013
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Dec. 31, 2012
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Total Securities Available for Sales |
$ 419,903
|
$ 451,060
|
| Stock Warrants |
147
|
906
|
|
Total Debt Securities Available for Sale [Member]
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Total Securities Available for Sales |
419,379
|
450,668
|
|
Financial Services Industry [Member]
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
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| Total Securities Available for Sales |
524
|
392
|
|
Equity Securities [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
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| Total Securities Available for Sales |
524
|
392
|
|
Mortgage-Backed Securities [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
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| Total Securities Available for Sales |
149,394
|
160,326
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|
Collateralized Mortgage Obligations [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
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| Total Securities Available for Sales |
92,868
|
100,487
|
|
U.S. Government Agency Securities [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
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| Total Securities Available for Sales |
80,930
|
93,118
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Municipal Bonds-Tax Exempt [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
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| Total Securities Available for Sales |
12,711
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12,812
|
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Municipal Bonds-Taxable [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
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| Total Securities Available for Sales |
46,156
|
46,142
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Corporate Bonds [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
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| Total Securities Available for Sales |
20,372
|
20,400
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SBA Loan Pools Securities [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
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| Total Securities Available for Sales |
13,918
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14,026
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Other Securities [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
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| Total Securities Available for Sales |
3,030
|
3,357
|
|
Quoted Prices in Active Markets for Identical Assets [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
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| Total Securities Available for Sales |
81,454
|
93,510
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Quoted Prices in Active Markets for Identical Assets [Member] | Total Debt Securities Available for Sale [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
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| Total Securities Available for Sales |
80,930
|
93,118
|
|
Quoted Prices in Active Markets for Identical Assets [Member] | Financial Services Industry [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
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| Total Securities Available for Sales |
524
|
392
|
|
Quoted Prices in Active Markets for Identical Assets [Member] | Equity Securities [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
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| Total Securities Available for Sales |
524
|
392
|
|
Quoted Prices in Active Markets for Identical Assets [Member] | U.S. Government Agency Securities [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Total Securities Available for Sales |
80,930
|
93,118
|
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Significant Observable Inputs With No Active Market With Identical Characteristics [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
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| Total Securities Available for Sales |
337,675
|
356,771
|
|
Significant Observable Inputs With No Active Market With Identical Characteristics [Member] | Total Debt Securities Available for Sale [Member]
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Total Securities Available for Sales |
337,675
|
356,771
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|
Significant Observable Inputs With No Active Market With Identical Characteristics [Member] | Mortgage-Backed Securities [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Total Securities Available for Sales |
149,394
|
160,326
|
|
Significant Observable Inputs With No Active Market With Identical Characteristics [Member] | Collateralized Mortgage Obligations [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
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| Total Securities Available for Sales |
92,868
|
100,487
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Significant Observable Inputs With No Active Market With Identical Characteristics [Member] | Municipal Bonds-Tax Exempt [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
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| Total Securities Available for Sales |
11,937
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12,033
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Significant Observable Inputs With No Active Market With Identical Characteristics [Member] | Municipal Bonds-Taxable [Member]
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|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
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| Total Securities Available for Sales |
46,156
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46,142
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|
Significant Observable Inputs With No Active Market With Identical Characteristics [Member] | Corporate Bonds [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
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| Total Securities Available for Sales |
20,372
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20,400
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Significant Observable Inputs With No Active Market With Identical Characteristics [Member] | SBA Loan Pools Securities [Member]
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Total Securities Available for Sales |
13,918
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14,026
|
|
Significant Observable Inputs With No Active Market With Identical Characteristics [Member] | Other Securities [Member]
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
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| Total Securities Available for Sales |
3,030
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3,357
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Significant Unobservable Inputs [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
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| Total Securities Available for Sales |
774
|
779
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| Stock Warrants |
147
|
906
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Significant Unobservable Inputs [Member] | Total Debt Securities Available for Sale [Member]
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
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| Total Securities Available for Sales |
774
|
779
|
|
Significant Unobservable Inputs [Member] | Municipal Bonds-Tax Exempt [Member]
|
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
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| Total Securities Available for Sales |
$ 774
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$ 779
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