Note 4 - Loans Receivable (Detail) - Troubled Debt Restructurings ("TDRs") (USD $)	Mar. 31, 2013	Dec. 31, 2012
Balance (in Dollars)	$ 7,400,000	$ 9,200,000
Accruing Troubled Debt Restructurings [Member] | One-to-Four-Family Residential [Member]
Number of Loans	5	12
Balance (in Dollars)	508,000	1,115,000
Accruing Troubled Debt Restructurings [Member] | Multifamily Residential [Member]
Number of Loans	1	1
Balance (in Dollars)	3,428,000	3,459,000
Accruing Troubled Debt Restructurings [Member] | Nonfarm Nonresidential [Member]
Number of Loans		1
Balance (in Dollars)		1,235,000
Accruing Troubled Debt Restructurings [Member] | Consumer Loan [Member]
Number of Loans		3
Balance (in Dollars)		7,000
Accruing Troubled Debt Restructurings [Member]
Number of Loans	6	17
Balance (in Dollars)	3,936,000	5,816,000
Nonaccrual Troubled Debt Restructurings [Member] | One-to-Four-Family Residential [Member]
Number of Loans	12	9
Balance (in Dollars)	1,555,000	1,461,000
Nonaccrual Troubled Debt Restructurings [Member] | Nonfarm Nonresidential [Member]
Number of Loans	3	3
Balance (in Dollars)	595,000	606,000
Nonaccrual Troubled Debt Restructurings [Member] | Construction and Land Development [Member]
Number of Loans	6	6
Balance (in Dollars)	1,283,000	1,315,000
Nonaccrual Troubled Debt Restructurings [Member] | Consumer Loan [Member]
Number of Loans	1
Balance (in Dollars)	5,000
Nonaccrual Troubled Debt Restructurings [Member]
Number of Loans	22	18
Balance (in Dollars)	3,438,000	3,382,000
Troubled Debt Restructuring [Member] | One-to-Four-Family Residential [Member]
Number of Loans	17	21
Balance (in Dollars)	2,063,000	2,576,000
Troubled Debt Restructuring [Member] | Multifamily Residential [Member]
Number of Loans	1	1
Balance (in Dollars)	3,428,000	3,459,000
Troubled Debt Restructuring [Member] | Nonfarm Nonresidential [Member]
Number of Loans	3	4
Balance (in Dollars)	595,000	1,841,000
Troubled Debt Restructuring [Member] | Construction and Land Development [Member]
Number of Loans	6	6
Balance (in Dollars)	1,283,000	1,315,000
Troubled Debt Restructuring [Member] | Consumer Loan [Member]
Number of Loans	1	3
Balance (in Dollars)	5,000	7,000
Troubled Debt Restructuring [Member]
Number of Loans	28	35
Balance (in Dollars)	$ 7,374,000	$ 9,198,000