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Activity in Allowance for Loan and Lease Losses (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2013 | Jun. 30, 2013 | Dec. 31, 2012
Allowance for credit losses: |  |  |
Beginning of year | $ 13,199 | $ 13,873 | $ 17,283
Charge-offs | (1,953) | (4,658) | (18,778)
Recoveries | 484 | 915 | 1,158
Provision | 450 | 2,050 | 14,210
Ending Balance | 12,180 | 12,180 | 13,873
Specific | 7,150 | 7,150 | 7,125
General | 5,030 | 5,030 | 6,748
Financing Receivable, Allowance for Credit Losses, Total | 12,180 | 12,180 | 13,873
Individually | 65,616 | 65,616 | 78,162
Collectively | 744,578 | 744,578 | 801,633
Total Loans | 810,194 | 810,194 | 879,795
Consumer Loans |  |  |
Allowance for credit losses: |  |  |
Beginning of year | 1,728 | 1,373 | 2,608
Charge-offs | (298) | (605) | (1,802)
Recoveries | 49 | 76 | 172
Provision | (53) | 582 | 395
Ending Balance | 1,426 | 1,426 | 1,373
Specific | 784 | 784 | 878
General | 642 | 642 | 495
Financing Receivable, Allowance for Credit Losses, Total | 1,426 | 1,426 | 1,373
Individually | 3,954 | 3,954 | 4,348
Collectively | 21,088 | 21,088 | 23,742
Total Loans | 25,042 | 25,042 | 28,090
Real Estate Loans |  |  |
Allowance for credit losses: |  |  |
Beginning of year | 6,488 | 8,034 | 8,260
Charge-offs | (1,138) | (2,560) | (11,108)
Recoveries | 139 | 304 | 302
Provision | 1,368 | 1,079 | 10,580
Ending Balance | 6,857 | 6,857 | 8,034
Specific | 4,445 | 4,445 | 4,180
General | 2,412 | 2,412 | 3,854
Financing Receivable, Allowance for Credit Losses, Total | 6,857 | 6,857 | 8,034
Individually | 54,302 | 54,302 | 66,133
Collectively | 501,581 | 501,581 | 479,656
Total Loans | 555,883 | 555,883 | 545,789
Agricultural |  |  |
Allowance for credit losses: |  |  |
Beginning of year | 404 | 258 | 19
Charge-offs | 0 | (28) | (634)
Recoveries | 0 | 0 | 0
Provision | (342) | (168) | 873
Ending Balance | 62 | 62 | 258
Specific | 0 | 0 | 28
General | 62 | 62 | 230
Financing Receivable, Allowance for Credit Losses, Total | 62 | 62 | 258
Individually | 20 | 20 | 663
Collectively | 23,425 | 23,425 | 21,819
Total Loans | 23,445 | 23,445 | 22,482
Commercial and Industrial |  |  |
Allowance for credit losses: |  |  |
Beginning of year | 3,084 | 2,797 | 4,638
Charge-offs | (424) | (1,315) | (4,283)
Recoveries | 291 | 529 | 589
Provision | (805) | 135 | 1,853
Ending Balance | 2,146 | 2,146 | 2,797
Specific | 744 | 744 | 934
General | 1,402 | 1,402 | 1,863
Financing Receivable, Allowance for Credit Losses, Total | 2,146 | 2,146 | 2,797
Individually | 4,253 | 4,253 | 3,656
Collectively | 178,589 | 178,589 | 255,022
Total Loans | 182,842 | 182,842 | 258,678
Small Business Loans |  |  |
Allowance for credit losses: |  |  |
Beginning of year | 1,410 | 1,246 | 1,447
Charge-offs | (7) | (44) | (753)
Recoveries | 1 | 1 | 95
Provision | 246 | 447 | 457
Ending Balance | 1,650 | 1,650 | 1,246
Specific | 1,147 | 1,147 | 1,038
General | 503 | 503 | 208
Financing Receivable, Allowance for Credit Losses, Total | 1,650 | 1,650 | 1,246
Individually | 3,027 | 3,027 | 3,227
Collectively | 16,466 | 16,466 | 17,296
Total Loans | 19,493 | 19,493 | 20,523
Direct Finance Leases |  |  |
Allowance for credit losses: |  |  |
Beginning of year | 85 | 165 | 311
Charge-offs | (86) | (106) | (198)
Recoveries | 4 | 5 | 0
Provision | 36 | (25) | 52
Ending Balance | 39 | 39 | 165
Specific | 30 | 30 | 67
General | 9 | 9 | 98
Financing Receivable, Allowance for Credit Losses, Total | 39 | 39 | 165
Individually | 60 | 60 | 135
Collectively | 3,429 | 3,429 | 4,098
Total Loans | $ 3,489 | $ 3,489 | $ 4,233

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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 + Details
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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 + Details
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- Definition Amount of direct write-downs of financing receivables charged against the allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 + Details
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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 + Details
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