Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified
|
Sep. 30, 2012
|
Dec. 31, 2011
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
$ 410,210
|
$ 381,862
|
Stock Warrants |
1,060
|
883
|
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 |
409,919
|
381,181
|
Financial Services Industry [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
291
|
681
|
Total Equity Securities Available For Sale [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
291
|
681
|
Residential Mortgage Backed Securities [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
142,168
|
113,005
|
Collateralized Mortgage Obligations [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
101,390
|
162,837
|
U.S. Government Agencies Securities [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
79,164
|
72,548
|
Municipal Bonds-Tax Exempt [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
12,738
|
3,482
|
Municipal Bonds-Taxable [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
46,234
|
6,138
|
Corporate Bonds [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
19,897
|
19,836
|
Other Securities [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
8,328
|
3,335
|
Quoted Prices in Active Markets for Identical Assets [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
79,455
|
73,229
|
Quoted Prices in Active Markets for Identical Assets [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 |
79,164
|
72,548
|
Quoted Prices in Active Markets for Identical Assets [Member] | Financial Services Industry [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
291
|
681
|
Quoted Prices in Active Markets for Identical Assets [Member] | Total Equity Securities Available For Sale [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
291
|
681
|
Quoted Prices in Active Markets for Identical Assets [Member] | U.S. Government Agencies Securities [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
79,164
|
72,548
|
Significant Observable Inputs With No Active Market With Identical Characteristics [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
329,967
|
308,633
|
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 |
329,967
|
308,633
|
Significant Observable Inputs With No Active Market With Identical Characteristics [Member] | Residential Mortgage Backed Securities [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
142,168
|
113,005
|
Significant Observable Inputs With No Active Market With Identical Characteristics [Member] | Collateralized Mortgage Obligations [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
101,390
|
162,837
|
Significant Observable Inputs With No Active Market With Identical Characteristics [Member] | Municipal Bonds-Tax Exempt [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
11,950
|
3,482
|
Significant Observable Inputs With No Active Market With Identical Characteristics [Member] | Municipal Bonds-Taxable [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
46,234
|
6,138
|
Significant Observable Inputs With No Active Market With Identical Characteristics [Member] | Corporate Bonds [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
19,897
|
19,836
|
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] |
|
|
Total Securities Available for Sales |
8,328
|
3,335
|
Significant Unobservable Inputs [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
788
|
|
Stock Warrants |
1,060
|
883
|
Significant Unobservable Inputs [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 |
788
|
|
Significant Unobservable Inputs [Member] | Municipal Bonds-Tax Exempt [Member]
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
Total Securities Available for Sales |
$ 788
|
|