Loans (Summary Of Troubled Debt Restructurings By Collateral Types) (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Troubled debt restructuring loans	$ 28,200	$ 26,100
Accrual Loan
Number of contracts	45	39
Troubled debt restructuring loans	22,970	17,951
Accrual Loan | Apartments
Number of contracts		1
Troubled debt restructuring loans		1,347
Accrual Loan | Raw Land
Number of contracts	5	3
Troubled debt restructuring loans	2,878	1,549
Accrual Loan | Hotel & Motel
Number of contracts	3	1
Troubled debt restructuring loans	2,406	503
Accrual Loan | Office
Number of contracts	2	3
Troubled debt restructuring loans	1,513	1,077
Accrual Loan | Retail including Strip Centers
Number of contracts	8	9
Troubled debt restructuring loans	6,228	6,694
Accrual Loan | 1-4 Family Residential
Number of contracts	26	22
Troubled debt restructuring loans	8,604	6,781
Accrual Loan | Warehouse
Number of contracts	1
Troubled debt restructuring loans	1,341
Non-Accrual Loans
Number of contracts	10	11
Troubled debt restructuring loans	5,170	8,155
Non-Accrual Loans | Raw Land
Number of contracts		2
Troubled debt restructuring loans		618
Non-Accrual Loans | Hotel & Motel
Number of contracts		1
Troubled debt restructuring loans		2,072
Non-Accrual Loans | Office
Number of contracts	1
Troubled debt restructuring loans	2,770
Non-Accrual Loans | Retail including Strip Centers
Number of contracts	1	1
Troubled debt restructuring loans	45	2,665
Non-Accrual Loans | 1-4 Family Residential
Number of contracts	8	7
Troubled debt restructuring loans	$ 2,355	$ 2,800