Note 6 - Past Due Loans, Allowance For Credit Losses, and Impaired Loans (Detail) - Credit Quality Indicators by Class, Excluding Covered Loans (Continued) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Home Equity [Member] | Performing [Member]
Credit Quality Indicators by Class	$ 424,404	$ 437,295
Home Equity [Member] | Non Accrual [Member]
Credit Quality Indicators by Class	5,519	7,948
Home Equity [Member] | Total [Member]
Credit Quality Indicators by Class	429,923	445,243
One ToFour Family Mortgages [Member] | Performing [Member]
Credit Quality Indicators by Class	180,425	156,988
One ToFour Family Mortgages [Member] | Non Accrual [Member]
Credit Quality Indicators by Class	4,577	3,902
One ToFour Family Mortgages [Member] | Total [Member]
Credit Quality Indicators by Class	185,002	160,890
Installment Loans [Member] | Performing [Member]
Credit Quality Indicators by Class	47,450	51,615
Installment Loans [Member] | Non Accrual [Member]
Credit Quality Indicators by Class	36	159
Installment Loans [Member] | Total [Member]
Credit Quality Indicators by Class	47,486	51,774
Total Consumer Loans [Member] | Performing [Member]
Credit Quality Indicators by Class	652,279	645,898
Total Consumer Loans [Member] | Non Accrual [Member]
Credit Quality Indicators by Class	10,132	12,009
Total Consumer Loans [Member] | Total [Member]
Credit Quality Indicators by Class	$ 662,411	$ 657,907