Impaired Loans, Segregated by Class of Loans (Detail) (USD $) | 3 Months Ended | 12 Months Ended |
In Thousands, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013 |
Financing Receivable, Impaired [Line Items] | ' | ' |
With No Related Allowance, Recorded Investment | $13,672 | $16,101 |
With No Related Allowance, Unpaid Principal Balance | 15,146 | 17,993 |
With No Related Allowance, Related Allowance | ' | ' |
With No Related Allowance, Average Recorded Investment | 15,629 | 18,687 |
With No Related Allowance, Interest Income Recognized | 196 | 980 |
With Related Allowance, Recorded Investment | 24,373 | 24,045 |
With Related Allowance, Unpaid Principal Balance | 24,487 | 24,164 |
With Related Allowance, Related Allowance | 1,901 | 563 |
With Related Allowance, Average Recorded Investment | 24,589 | 24,591 |
With Related Allowance, Interest Income Recognized | 262 | 1,073 |
Recorded Investment, Total | 38,045 | 40,146 |
Unpaid Principal Balance, Total | 39,633 | 42,157 |
Related Allowance, Total | 1,901 | 563 |
Average Recorded Investment, Total | 40,218 | 43,278 |
Interest Income Recognized, Total | 458 | 2,053 |
Consumer - Non Real Estate | ' | ' |
Financing Receivable, Impaired [Line Items] | ' | ' |
With No Related Allowance, Recorded Investment | 67 | 68 |
With No Related Allowance, Unpaid Principal Balance | 67 | 68 |
With No Related Allowance, Related Allowance | ' | ' |
With No Related Allowance, Average Recorded Investment | 68 | 70 |
With No Related Allowance, Interest Income Recognized | 1 | 4 |
With Related Allowance, Recorded Investment | 7 | 8 |
With Related Allowance, Unpaid Principal Balance | 7 | 8 |
With Related Allowance, Average Recorded Investment | 8 | 11 |
Recorded Investment, Total | 74 | 76 |
Unpaid Principal Balance, Total | 74 | 76 |
Average Recorded Investment, Total | 76 | 81 |
Interest Income Recognized, Total | 1 | 4 |
Commercial - Non Real Estate | ' | ' |
Financing Receivable, Impaired [Line Items] | ' | ' |
With No Related Allowance, Recorded Investment | 979 | 1,099 |
With No Related Allowance, Unpaid Principal Balance | 1,175 | 1,305 |
With No Related Allowance, Related Allowance | ' | ' |
With No Related Allowance, Average Recorded Investment | 1,205 | 1,384 |
With No Related Allowance, Interest Income Recognized | 17 | 79 |
With Related Allowance, Recorded Investment | 1,242 | 1,205 |
With Related Allowance, Unpaid Principal Balance | 1,242 | 1,205 |
With Related Allowance, Related Allowance | 24 | 25 |
With Related Allowance, Average Recorded Investment | 1,260 | 1,282 |
With Related Allowance, Interest Income Recognized | 11 | 45 |
Recorded Investment, Total | 2,221 | 2,304 |
Unpaid Principal Balance, Total | 2,417 | 2,510 |
Related Allowance, Total | 24 | 25 |
Average Recorded Investment, Total | 2,465 | 2,666 |
Interest Income Recognized, Total | 28 | 124 |
Commercial Real Estate | ' | ' |
Financing Receivable, Impaired [Line Items] | ' | ' |
Recorded Investment, Total | 18,207 | 19,393 |
Unpaid Principal Balance, Total | 18,769 | 20,217 |
Related Allowance, Total | 924 | 215 |
Average Recorded Investment, Total | 18,912 | 20,768 |
Interest Income Recognized, Total | 221 | 1,015 |
Commercial Real Estate | Owner occupied | ' | ' |
Financing Receivable, Impaired [Line Items] | ' | ' |
With No Related Allowance, Recorded Investment | 2,431 | 3,480 |
With No Related Allowance, Unpaid Principal Balance | 2,738 | 4,062 |
With No Related Allowance, Related Allowance | ' | ' |
With No Related Allowance, Average Recorded Investment | 2,819 | 4,365 |
With No Related Allowance, Interest Income Recognized | 37 | 239 |
With Related Allowance, Recorded Investment | 3,796 | 3,666 |
With Related Allowance, Unpaid Principal Balance | 3,796 | 3,666 |
With Related Allowance, Related Allowance | 92 | 77 |
With Related Allowance, Average Recorded Investment | 3,807 | 3,727 |
With Related Allowance, Interest Income Recognized | 39 | 166 |
Commercial Real Estate | Income Producing | ' | ' |
Financing Receivable, Impaired [Line Items] | ' | ' |
With No Related Allowance, Recorded Investment | 3,534 | 3,734 |
With No Related Allowance, Unpaid Principal Balance | 3,701 | 3,887 |
With No Related Allowance, Related Allowance | ' | ' |
With No Related Allowance, Average Recorded Investment | 3,713 | 3,938 |
With No Related Allowance, Interest Income Recognized | 42 | 183 |
With Related Allowance, Recorded Investment | 7,231 | 7,287 |
With Related Allowance, Unpaid Principal Balance | 7,286 | 7,343 |
With Related Allowance, Related Allowance | 750 | 126 |
With Related Allowance, Average Recorded Investment | 7,318 | 7,465 |
With Related Allowance, Interest Income Recognized | 92 | 382 |
Commercial Real Estate | Multifamily | ' | ' |
Financing Receivable, Impaired [Line Items] | ' | ' |
With No Related Allowance, Related Allowance | ' | ' |
With Related Allowance, Recorded Investment | 1,215 | 1,226 |
With Related Allowance, Unpaid Principal Balance | 1,248 | 1,259 |
With Related Allowance, Related Allowance | 82 | 12 |
With Related Allowance, Average Recorded Investment | 1,255 | 1,273 |
With Related Allowance, Interest Income Recognized | 11 | 45 |
Construction & Development | ' | ' |
Financing Receivable, Impaired [Line Items] | ' | ' |
Recorded Investment, Total | 5,174 | 5,333 |
Unpaid Principal Balance, Total | 5,541 | 5,701 |
Related Allowance, Total | 739 | 115 |
Average Recorded Investment, Total | 5,601 | 5,916 |
Interest Income Recognized, Total | 63 | 275 |
Construction & Development | 1-4 Family Residential | ' | ' |
Financing Receivable, Impaired [Line Items] | ' | ' |
With No Related Allowance, Related Allowance | ' | ' |
With Related Allowance, Recorded Investment | 357 | 360 |
With Related Allowance, Unpaid Principal Balance | 363 | 366 |
With Related Allowance, Related Allowance | 7 | 8 |
With Related Allowance, Average Recorded Investment | 365 | 371 |
With Related Allowance, Interest Income Recognized | 5 | 19 |
Construction & Development | Construction & Development, Other | ' | ' |
Financing Receivable, Impaired [Line Items] | ' | ' |
With No Related Allowance, Recorded Investment | 1,512 | 1,545 |
With No Related Allowance, Unpaid Principal Balance | 1,852 | 1,881 |
With No Related Allowance, Related Allowance | ' | ' |
With No Related Allowance, Average Recorded Investment | 1,868 | 1,981 |
With No Related Allowance, Interest Income Recognized | 26 | 112 |
With Related Allowance, Recorded Investment | 3,170 | 3,176 |
With Related Allowance, Unpaid Principal Balance | 3,170 | 3,181 |
With Related Allowance, Related Allowance | 732 | 107 |
With Related Allowance, Average Recorded Investment | 3,175 | 3,224 |
With Related Allowance, Interest Income Recognized | 28 | 118 |
Construction & Development | Farmland | ' | ' |
Financing Receivable, Impaired [Line Items] | ' | ' |
With No Related Allowance, Recorded Investment | 135 | 252 |
With No Related Allowance, Unpaid Principal Balance | 156 | 273 |
With No Related Allowance, Related Allowance | ' | ' |
With No Related Allowance, Average Recorded Investment | 193 | 340 |
With No Related Allowance, Interest Income Recognized | 4 | 26 |
Residential | ' | ' |
Financing Receivable, Impaired [Line Items] | ' | ' |
Recorded Investment, Total | 12,369 | 13,040 |
Unpaid Principal Balance, Total | 12,832 | 13,653 |
Related Allowance, Total | 214 | 208 |
Average Recorded Investment, Total | 13,164 | 13,847 |
Interest Income Recognized, Total | 145 | 635 |
Residential | 1-4 Family Residential | ' | ' |
Financing Receivable, Impaired [Line Items] | ' | ' |
With No Related Allowance, Recorded Investment | 4,674 | 5,632 |
With No Related Allowance, Unpaid Principal Balance | 5,088 | 6,198 |
With No Related Allowance, Related Allowance | ' | ' |
With No Related Allowance, Average Recorded Investment | 5,393 | 6,281 |
With No Related Allowance, Interest Income Recognized | 64 | 322 |
With Related Allowance, Recorded Investment | 7,019 | 6,778 |
With Related Allowance, Unpaid Principal Balance | 7,037 | 6,795 |
With Related Allowance, Related Allowance | 211 | 204 |
With Related Allowance, Average Recorded Investment | 7,062 | 6,893 |
With Related Allowance, Interest Income Recognized | 71 | 279 |
Residential | Equity Lines | ' | ' |
Financing Receivable, Impaired [Line Items] | ' | ' |
With No Related Allowance, Recorded Investment | 147 | 95 |
With No Related Allowance, Unpaid Principal Balance | 153 | 101 |
With No Related Allowance, Related Allowance | ' | ' |
With No Related Allowance, Average Recorded Investment | 153 | 105 |
With No Related Allowance, Interest Income Recognized | 2 | 3 |
Residential | Junior Liens | ' | ' |
Financing Receivable, Impaired [Line Items] | ' | ' |
With No Related Allowance, Recorded Investment | 193 | 196 |
With No Related Allowance, Unpaid Principal Balance | 216 | 218 |
With No Related Allowance, Related Allowance | ' | ' |
With No Related Allowance, Average Recorded Investment | 217 | 223 |
With No Related Allowance, Interest Income Recognized | 3 | 12 |
With Related Allowance, Recorded Investment | 336 | 339 |
With Related Allowance, Unpaid Principal Balance | 338 | 341 |
With Related Allowance, Related Allowance | 3 | 4 |
With Related Allowance, Average Recorded Investment | 339 | 345 |
With Related Allowance, Interest Income Recognized | $5 | $19 |