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Significant Accounting Policies - Additional Information (Detail) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Schedule Of Significant Accounting Policies [Line Items] |  |  |  |
Number of days past due when interest income on commercial and mortgage loans is discontinued |  |  | 90 days |
Maximum number of days past due when consumer and credit card loans are typically charged off |  |  | 120 days |
Restricted shares [Member] |  |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |  |
Unvested restricted shares included in determining basic and diluted earnings per share | 64,000 | 38,000 | 64,000 | 38,000
Stock options [Member] |  |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |  |
Stock options included in determining diluted earnings per share | 54,000 | 26,000 | 54,000 | 21,000
Stock options antidilutive and not included in determining diluted earnings per share | 94,000 | 137,000 | 94,000 | 142,000
Stock warrant [Member] |  |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |  |
Stock warrant included in determining diluted earnings per share |  | 616,000 |  | 616,000

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- Definition Number of days past due when interest income on commercial and mortgage loans is discontinued unless the loans are well-secured and in process of collection. + References No definition available. + Details
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- Definition Maximum number of days delinquent for consumer and credit card loans to be charged off. + References No definition available. + Details
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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Diluted Earnings Per Share -URI http://asc.fasb.org/extlink&oid=6510752 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Stock Agreement -URI http://asc.fasb.org/extlink&oid=6508534 + Details
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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Warrant -URI http://asc.fasb.org/extlink&oid=6528364 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 23 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1757-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Treasury Stock Method -URI http://asc.fasb.org/extlink&oid=6527216 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Call Option -URI http://asc.fasb.org/extlink&oid=6506649 + Details
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