Risk Category of Loans by Class of Loans (Detail) (USD $)
In Thousands, unless otherwise specified | Jun. 30, 2012 | Dec. 31, 2011 |
|---|
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | $ 1,145,230 | | $ 1,131,401 | |
Commercial | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 181,932 | | 193,176 | |
Residential real estate | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 280,135 | | 266,268 | |
Residential real estate | Home Equity Line of Credit | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 101,580 | | 94,680 | |
Residential real estate | Multi Family | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 43,356 | | 36,756 | |
Residential real estate | Residential Real Estate Other Financing Receivable | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 135,199 | | 134,832 | |
Nonresidential real estate | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 539,748 | | 523,485 | |
Nonresidential real estate | Commercial Mortgage Loans, Owner Occupied | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 266,962 | | 252,768 | |
Nonresidential real estate | Commercial Mortgage Loans, Non Owner Occupied | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 272,786 | | 270,717 | |
Construction | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 100,094 | | 104,788 | |
Consumer | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 16,307 | | 16,618 | |
Consumer | Consumer Credit Card Financing Receivable | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 6,327 | | 6,492 | |
Consumer | Consumer Other Financing Receivable | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 9,980 | | 10,126 | |
Municipal Obligations | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 27,014 | | 27,066 | |
Pass | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 849,490 | | 831,152 | |
Pass | Commercial | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 161,292 | | 170,394 | |
Pass | Residential real estate | Home Equity Line of Credit | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 11,472 | | 0 | |
Pass | Residential real estate | Multi Family | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 41,471 | | 36,115 | |
Pass | Residential real estate | Residential Real Estate Other Financing Receivable | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 40,109 | | 38,725 | |
Pass | Nonresidential real estate | Commercial Mortgage Loans, Owner Occupied | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 232,488 | | 221,941 | |
Pass | Nonresidential real estate | Commercial Mortgage Loans, Non Owner Occupied | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 249,678 | | 246,614 | |
Pass | Construction | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 85,966 | | 90,297 | |
Pass | Consumer | Consumer Credit Card Financing Receivable | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 0 | | 0 | |
Pass | Consumer | Consumer Other Financing Receivable | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 0 | | 0 | |
Pass | Municipal Obligations | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 27,014 | | 27,066 | |
Special Mention | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 46,969 | | 31,910 | |
Special Mention | Commercial | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 16,847 | | 9,684 | |
Special Mention | Residential real estate | Home Equity Line of Credit | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 965 | | 712 | |
Special Mention | Residential real estate | Multi Family | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 101 | | 103 | |
Special Mention | Residential real estate | Residential Real Estate Other Financing Receivable | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 1,133 | | 1,357 | |
Special Mention | Nonresidential real estate | Commercial Mortgage Loans, Owner Occupied | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 16,713 | | 7,754 | |
Special Mention | Nonresidential real estate | Commercial Mortgage Loans, Non Owner Occupied | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 7,827 | | 8,902 | |
Special Mention | Construction | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 3,383 | | 3,398 | |
Special Mention | Consumer | Consumer Credit Card Financing Receivable | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 0 | | 0 | |
Special Mention | Consumer | Consumer Other Financing Receivable | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 0 | | 0 | |
Special Mention | Municipal Obligations | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 0 | | 0 | |
Substandard | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 61,230 | | 74,844 | |
Substandard | Commercial | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 3,793 | | 13,098 | |
Substandard | Residential real estate | Home Equity Line of Credit | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 1,006 | | 976 | |
Substandard | Residential real estate | Multi Family | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 1,784 | | 538 | |
Substandard | Residential real estate | Residential Real Estate Other Financing Receivable | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 10,844 | | 10,843 | |
Substandard | Nonresidential real estate | Commercial Mortgage Loans, Owner Occupied | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 17,761 | | 23,073 | |
Substandard | Nonresidential real estate | Commercial Mortgage Loans, Non Owner Occupied | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 15,281 | | 15,201 | |
Substandard | Construction | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 10,745 | | 11,093 | |
Substandard | Consumer | Consumer Credit Card Financing Receivable | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 0 | | 0 | |
Substandard | Consumer | Consumer Other Financing Receivable | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 16 | | 22 | |
Substandard | Municipal Obligations | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 0 | | 0 | |
Doubtful | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 123 | | 84 | |
Doubtful | Commercial | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 0 | | 0 | |
Doubtful | Residential real estate | Home Equity Line of Credit | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 90 | | 84 | |
Doubtful | Residential real estate | Multi Family | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 0 | | 0 | |
Doubtful | Residential real estate | Residential Real Estate Other Financing Receivable | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 31 | | 0 | |
Doubtful | Nonresidential real estate | Commercial Mortgage Loans, Owner Occupied | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 0 | | 0 | |
Doubtful | Nonresidential real estate | Commercial Mortgage Loans, Non Owner Occupied | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 0 | | 0 | |
Doubtful | Construction | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 0 | | 0 | |
Doubtful | Consumer | Consumer Credit Card Financing Receivable | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 2 | | 0 | |
Doubtful | Consumer | Consumer Other Financing Receivable | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 0 | | 0 | |
Doubtful | Municipal Obligations | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 0 | | 0 | |
Not Rated | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 187,418 | [1] | 193,411 | [1] |
Not Rated | Commercial | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 0 | [1] | 0 | [1] |
Not Rated | Residential real estate | Home Equity Line of Credit | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 88,047 | [1] | 92,908 | [1] |
Not Rated | Residential real estate | Multi Family | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 0 | [1] | 0 | [1] |
Not Rated | Residential real estate | Residential Real Estate Other Financing Receivable | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 83,082 | [1] | 83,907 | [1] |
Not Rated | Nonresidential real estate | Commercial Mortgage Loans, Owner Occupied | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 0 | [1] | 0 | [1] |
Not Rated | Nonresidential real estate | Commercial Mortgage Loans, Non Owner Occupied | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 0 | [1] | 0 | [1] |
Not Rated | Construction | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 0 | [1] | 0 | [1] |
Not Rated | Consumer | Consumer Credit Card Financing Receivable | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 6,325 | [1] | 6,492 | [1] |
Not Rated | Consumer | Consumer Other Financing Receivable | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | 9,964 | [1] | 10,104 | [1] |
Not Rated | Municipal Obligations | | | | |
| Financing Receivable, Recorded Investment [Line Items] | | | | |
| Gross loans | $ 0 | [1] | $ 0 | [1] |
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