Loans (Risk Category of Loans by Class of Loans) (Detail) (USD $) | Mar. 31, 2015 | Dec. 31, 2014 |
In Thousands, unless otherwise specified |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | $1,278,039 | | $1,260,421 | |
Commercial [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 251,077 | | 233,522 | |
Residential Real Estate [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 268,988 | | 272,531 | |
Residential Real Estate [Member] | Home Equity Line of Credit [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 98,548 | | 101,771 | |
Residential Real Estate [Member] | Multifamily properties [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 53,759 | | 53,486 | |
Residential Real Estate [Member] | Other residential real estate [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 116,681 | | 117,274 | |
Non Residential Real Estate [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 597,401 | | 592,642 | |
Non Residential Real Estate [Member] | Owner occupied properties [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 302,111 | | 302,470 | |
Non Residential Real Estate [Member] | Non Owner Occupied Properties [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 295,290 | | 290,172 | |
Construction [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 104,642 | | 104,299 | |
Consumer [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 14,270 | | 15,080 | |
Consumer [Member] | Consumer Credit Card Financing Receivable [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 6,824 | | 6,960 | |
Consumer [Member] | Other consumer [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 7,446 | | 8,120 | |
Municipal Obligations [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 41,661 | | 42,347 | |
Pass [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 1,049,744 | | 1,020,182 | |
Pass [Member] | Commercial [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 242,830 | | 223,920 | |
Pass [Member] | Residential Real Estate [Member] | Home Equity Line of Credit [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 12,150 | | 12,105 | |
Pass [Member] | Residential Real Estate [Member] | Multifamily properties [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 52,974 | | 52,701 | |
Pass [Member] | Residential Real Estate [Member] | Other residential real estate [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 38,117 | | 35,151 | |
Pass [Member] | Non Residential Real Estate [Member] | Owner occupied properties [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 275,122 | | 273,465 | |
Pass [Member] | Non Residential Real Estate [Member] | Non Owner Occupied Properties [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 286,700 | | 280,392 | |
Pass [Member] | Construction [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 100,190 | | 100,101 | |
Pass [Member] | Consumer [Member] | Consumer Credit Card Financing Receivable [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | | 0 | |
Pass [Member] | Consumer [Member] | Other consumer [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | | 0 | |
Pass [Member] | Municipal Obligations [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 41,661 | | 42,347 | |
Special Mention [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 20,020 | | 22,768 | |
Special Mention [Member] | Commercial [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 2,174 | | 3,294 | |
Special Mention [Member] | Residential Real Estate [Member] | Home Equity Line of Credit [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 240 | | 167 | |
Special Mention [Member] | Residential Real Estate [Member] | Multifamily properties [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | | 0 | |
Special Mention [Member] | Residential Real Estate [Member] | Other residential real estate [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 2,721 | | 2,749 | |
Special Mention [Member] | Non Residential Real Estate [Member] | Owner occupied properties [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 10,227 | | 11,266 | |
Special Mention [Member] | Non Residential Real Estate [Member] | Non Owner Occupied Properties [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 3,777 | | 5,292 | |
Special Mention [Member] | Construction [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 881 | | 0 | |
Special Mention [Member] | Consumer [Member] | Consumer Credit Card Financing Receivable [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | | 0 | |
Special Mention [Member] | Consumer [Member] | Other consumer [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | | 0 | |
Special Mention [Member] | Municipal Obligations [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | | 0 | |
Substandard [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 38,766 | | 41,579 | |
Substandard [Member] | Commercial [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 5,599 | | 6,308 | |
Substandard [Member] | Residential Real Estate [Member] | Home Equity Line of Credit [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 2,019 | | 2,070 | |
Substandard [Member] | Residential Real Estate [Member] | Multifamily properties [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 785 | | 785 | |
Substandard [Member] | Residential Real Estate [Member] | Other residential real estate [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 5,204 | | 5,982 | |
Substandard [Member] | Non Residential Real Estate [Member] | Owner occupied properties [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 16,762 | | 17,739 | |
Substandard [Member] | Non Residential Real Estate [Member] | Non Owner Occupied Properties [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 4,813 | | 4,488 | |
Substandard [Member] | Construction [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 3,571 | | 4,198 | |
Substandard [Member] | Consumer [Member] | Consumer Credit Card Financing Receivable [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | | 0 | |
Substandard [Member] | Consumer [Member] | Other consumer [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 13 | | 9 | |
Substandard [Member] | Municipal Obligations [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | | 0 | |
Doubtful [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 474 | | 0 | |
Doubtful [Member] | Commercial [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 474 | | 0 | |
Doubtful [Member] | Residential Real Estate [Member] | Home Equity Line of Credit [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | | 0 | |
Doubtful [Member] | Residential Real Estate [Member] | Multifamily properties [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | | 0 | |
Doubtful [Member] | Residential Real Estate [Member] | Other residential real estate [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | | 0 | |
Doubtful [Member] | Non Residential Real Estate [Member] | Owner occupied properties [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | | 0 | |
Doubtful [Member] | Non Residential Real Estate [Member] | Non Owner Occupied Properties [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | | 0 | |
Doubtful [Member] | Construction [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | | 0 | |
Doubtful [Member] | Consumer [Member] | Consumer Credit Card Financing Receivable [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | | 0 | |
Doubtful [Member] | Consumer [Member] | Other consumer [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | | 0 | |
Doubtful [Member] | Municipal Obligations [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | | 0 | |
Not Rated [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 169,035 | [1] | 175,892 | [1] |
Not Rated [Member] | Commercial [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | [1] | 0 | [1] |
Not Rated [Member] | Residential Real Estate [Member] | Home Equity Line of Credit [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 84,139 | [1] | 87,429 | [1] |
Not Rated [Member] | Residential Real Estate [Member] | Multifamily properties [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | [1] | 0 | [1] |
Not Rated [Member] | Residential Real Estate [Member] | Other residential real estate [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 70,639 | [1] | 73,392 | [1] |
Not Rated [Member] | Non Residential Real Estate [Member] | Owner occupied properties [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | [1] | 0 | [1] |
Not Rated [Member] | Non Residential Real Estate [Member] | Non Owner Occupied Properties [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | [1] | 0 | [1] |
Not Rated [Member] | Construction [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 0 | [1] | 0 | [1] |
Not Rated [Member] | Consumer [Member] | Consumer Credit Card Financing Receivable [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 6,824 | [1] | 6,960 | [1] |
Not Rated [Member] | Consumer [Member] | Other consumer [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | 7,433 | [1] | 8,111 | [1] |
Not Rated [Member] | Municipal Obligations [Member] | | | | |
Financing Receivable, Recorded Investment [Line Items] | | | | |
Gross loans | $0 | [1] | $0 | [1] |
|
[1] | Not rated loans represent the homogenous pools risk category. |