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Loans and Allowance for Loan Losses - Activity for Loans Categorized as Troubled Debt Restructurings (Detail) (USD $) | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Commercial and Industrial [Member] |  |  |
Schedule Of Troubled Debt Restructured Loans [Line Items] |  |  |
Beginning Balance | $ 2,720,000 | $ 4,553,000 | $ 850,000
Charge-Offs | (35,000) | (540,000) | (850,000)
Payments | (2,781,000) | (2,584,000) | 0
Transfers to ORE | (74,000) | (96,000) | 0
Net Additions/Deletions | 1,826,000 | 1,387,000 | 4,553,000
Ending Balance | 1,656,000 | 2,720,000 | 4,553,000
Commercial Vacant Land, Land Development, and Residential Construction [Member] |  |  |
Schedule Of Troubled Debt Restructured Loans [Line Items] |  |  |
Beginning Balance | 3,071,000 | 5,100,000 | 10,696,000
Charge-Offs | (725,000) | (63,000) | (2,429,000)
Payments | (1,596,000) | (2,013,000) | (3,137,000)
Transfers to ORE | 0 | 0 | (5,130,000)
Net Additions/Deletions | 3,751,000 | 47,000 | 5,100,000
Ending Balance | 4,501,000 | 3,071,000 | 5,100,000
Commercial Real Estate - Owner Occupied [Member] |  |  |
Schedule Of Troubled Debt Restructured Loans [Line Items] |  |  |
Beginning Balance | 4,116,000 | 6,183,000 | 2,589,000
Charge-Offs | (70,000) | (426,000) | 0
Payments | (2,151,000) | (3,443,000) | (2,477,000)
Transfers to ORE | (363,000) | (65,000) | 0
Net Additions/Deletions | 284,000 | 1,867,000 | 6,071,000
Ending Balance | 1,816,000 | 4,116,000 | 6,183,000
Commercial Real Estate - Non-Owner Occupied [Member] |  |  |
Schedule Of Troubled Debt Restructured Loans [Line Items] |  |  |
Beginning Balance | 37,671,000 | 12,036,000 | 9,330,000
Charge-Offs | (2,537,000) | (720,000) | (1,195,000)
Payments | (13,795,000) | (2,482,000) | (3,614,000)
Transfers to ORE | (1,153,000) | (1,045,000) | 0
Net Additions/Deletions | 2,125,000 | 29,882,000 | 7,515,000
Ending Balance | 22,311,000 | 37,671,000 | 12,036,000
Commercial Real Estate - Multi-Family and Residential Rental [Member] |  |  |
Schedule Of Troubled Debt Restructured Loans [Line Items] |  |  |
Beginning Balance | 3,027,000 | 12,626,000 | 7,848,000
Charge-Offs | (15,000) | (2,180,000) | (21,000)
Payments | (735,000) | (7,422,000) | (92,000)
Transfers to ORE | 0 | (186,000) | 0
Net Additions/Deletions | 343,000 | 189,000 | 4,891,000
Ending Balance | 2,620,000 | 3,027,000 | 12,626,000
Retail Home Equity and Other [Member] |  |  |
Schedule Of Troubled Debt Restructured Loans [Line Items] |  |  |
Beginning Balance | 0 | 0 | 0
Charge-Offs | 0 | 0 | 0
Payments | 0 | 0 | 0
Transfers to ORE | 0 | 0 | 0
Net Additions/Deletions | 0 | 0 | 0
Ending Balance | 0 | 0 | 0
Retail 1-4 Family Mortgages [Member] |  |  |
Schedule Of Troubled Debt Restructured Loans [Line Items] |  |  |
Beginning Balance | 155,000 | 164,000 | 0
Charge-Offs | 0 | 0 | 0
Payments | (46,000) | (9,000) | 0
Transfers to ORE | 0 | 0 | 0
Net Additions/Deletions | 1,878,000 | 0 | 164,000
Ending Balance | $ 1,987,000 | $ 155,000 | $ 164,000

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- Definition Financing receivable modified as troubled debt restructurings charge offs. + References No definition available. + Details
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- Definition Financing receivable modified as troubled debt restructurings payments. + References No definition available. + Details
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- Definition Financing receivable modified as troubled debt restructurings transfer to other real estate. + References No definition available. + Details
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- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554 + Details
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