Quarterly report pursuant to Section 13 or 15(d)

Loans By Past Due Status (Detail)

v2.4.0.6
Loans By Past Due Status (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Status (Accruing Loans) 30-59 Days $ 3,770 $ 4,341
Past Due Status (Accruing Loans) 60-89 Days 423 84
Past Due Status (Accruing Loans) 90+ Days 38 0
Past Due Status (Accruing Loans) Total Past Due 4,231 4,425
Non-Accrual 13,173 13,772
Current 2,143,726 1,812,545
Total Loans 2,161,130 1,830,742
Commercial Financial And Agricultural Financing Receivable [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Status (Accruing Loans) 30-59 Days 757 0
Past Due Status (Accruing Loans) 60-89 Days 371 0
Past Due Status (Accruing Loans) 90+ Days 0 0
Past Due Status (Accruing Loans) Total Past Due 1,128 0
Non-Accrual 367 1,179
Current 908,725 798,285
Total Loans 910,220 799,464
Commercial Real Estate Construction Financing Receivable [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Status (Accruing Loans) 30-59 Days 0 2,234
Past Due Status (Accruing Loans) 60-89 Days 32 0
Past Due Status (Accruing Loans) 90+ Days 0 0
Past Due Status (Accruing Loans) Total Past Due 32 2,234
Non-Accrual 8,221 10,063
Current 145,098 138,921
Total Loans 153,351 151,218
Commercial Mortgage Loans Owner Occupied [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Status (Accruing Loans) 30-59 Days 1,555 0
Past Due Status (Accruing Loans) 60-89 Days 0 0
Past Due Status (Accruing Loans) 90+ Days 0 0
Past Due Status (Accruing Loans) Total Past Due 1,555 0
Non-Accrual 2,957 792
Current 525,838 397,809
Total Loans 530,350 398,601
One To Four Family Mortgage Loans [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Status (Accruing Loans) 30-59 Days 242 2,107
Past Due Status (Accruing Loans) 60-89 Days 0 0
Past Due Status (Accruing Loans) 90+ Days 0 0
Past Due Status (Accruing Loans) Total Past Due 242 2,107
Non-Accrual 469 670
Current 235,349 202,405
Total Loans 236,060 205,182
Other Real Estate Mortgage Loans [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Status (Accruing Loans) 30-59 Days 1,000 0
Past Due Status (Accruing Loans) 60-89 Days 0 0
Past Due Status (Accruing Loans) 90+ Days 0 0
Past Due Status (Accruing Loans) Total Past Due 1,000 0
Non-Accrual 1,033 693
Current 286,644 234,558
Total Loans 288,677 235,251
Residential Real Estate Mortgage Loans [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Status (Accruing Loans) 30-59 Days 2,797 2,107
Past Due Status (Accruing Loans) 60-89 Days 0 0
Past Due Status (Accruing Loans) 90+ Days 0 0
Past Due Status (Accruing Loans) Total Past Due 2,797 2,107
Non-Accrual 4,459 2,155
Current 1,047,831 834,772
Total Loans 1,055,087 839,034
Consumer Portfolio Segment [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Status (Accruing Loans) 30-59 Days 216 0
Past Due Status (Accruing Loans) 60-89 Days 20 84
Past Due Status (Accruing Loans) 90+ Days 38 0
Past Due Status (Accruing Loans) Total Past Due 274 84
Non-Accrual 126 375
Current 42,072 40,567
Total Loans $ 42,472 $ 41,026